Journal Of Oleo Science[JOURNAL]
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200 papers
Treatment of Ulcerative Colitis with Myrrh Essential Oil Microemulsion.
Wang M, Tang T, Liu M … +19 more , Niu Z, Zhang L, Wang X, Xia N, Wang J, Wang J, Chen C, Ge X, Chen Q, Zhang S, Shi H, Xie Y, Zhao C, Zou J, Guo D, Shi Y, Yang M, Zhang X, Sun J
J Oleo Sci · 2026 · PMID 41485898 · Publisher ↗
Ulcerative colitis (UC) is a chronic inflammatory colon disease that is a major public health problem. The long-term administration of traditional drugs is likely to trigger adverse reactions. The myrrh essential oil (ME...
Ulcerative colitis (UC) is a chronic inflammatory colon disease that is a major public health problem. The long-term administration of traditional drugs is likely to trigger adverse reactions. The myrrh essential oil (MEO) exhibits promising therapeutic efficacy against ulcerative colitis. However, due to the inherent instability and volatility of MEO, it was formulated into myrrh essential oil microemulsion (MM) with the aim of enhancing its stability. This study explored the optimal formulation for synthesizing MM, and a series of relevant indices were employed to meticulously investigate its stability characteristics. In animal experiments, a UC mouse model was established with the assistance of Dextran Sulfate Sodium (DSS). The therapeutic efficacy was comprehensively evaluated by recording Disease Activity Index (DAI) scores, detecting the levels of Tumor Necrosis Factor-α (TNF-α) and Interleukin-1β (IL-1β), and observing the morphological features of mouse colonic tissues through hematoxylin-eosin (HE) staining and immunohistochemistry (IHC) techniques. The results confirmed that both MEO and MM are effective in treating ulcerative colitis.
Distinct Composition-dependent Biodis-tribution Patterns of Phospholipid Liposomes.
Kawano T, Kang JH, Murata M
J Oleo Sci · 2026 · PMID 41485897 · Publisher ↗
Phosphatidylserine (PS) and phosphatidylethanolamine (PE) act as an "eat-me" signal for phagocytes to engulf apoptotic cells. The aim of our study was to investigate the biodistribution of PS- or PE-containing liposomes....
Phosphatidylserine (PS) and phosphatidylethanolamine (PE) act as an "eat-me" signal for phagocytes to engulf apoptotic cells. The aim of our study was to investigate the biodistribution of PS- or PE-containing liposomes. Three phospholipid liposomes (DOPC/DOPS, DOPC/DOPE, and DOPC/soybean PS) were intravenously injected and analyzed. DOPC/DOPS showed higher average radiant efficiency (intensity/area) in the lung, liver, kidney, and heart than DOPC/DOPE. The total and average radiant efficiency of DOPC/DOPS was higher than that of DOPC/soybean PS in the lung, liver, and kidney. These results suggest that the biodistribution of anionic phospholipid liposomes depends on their phospholipid composition.
Optimising Extraction Methods for Enhanced Lipid Recovery from Macroalgae.
Bhayu Gita Bhernama, Muchlisin ZA, Febriani … +1 more , Iqbalsyah TM
J Oleo Sci · 2026 · PMID 41485896 · Publisher ↗
Biodiesel feedstocks have evolved from the use of food-grade vegetable oils to lipids from microalgae and microorganisms. The challenges faced in the production of biodiesel from this third-generation lipids lie in the e...
Biodiesel feedstocks have evolved from the use of food-grade vegetable oils to lipids from microalgae and microorganisms. The challenges faced in the production of biodiesel from this third-generation lipids lie in the efficient extraction techniques and production costs. This study aimed to optimise extraction techniques to enhance lipid recovery from macroalgae. Six macroalgal species from the northwest coast of Aceh, Indonesia, were initially screened to evaluate their lipid yields using the Soxhlet extraction (S) method. Caulerpa taxifolia was selected for further optimisation based on its high lipid yield and favourable fatty acid profile, consisting of 85.8 % palmitic acid (C16:0) and 14.2 % myristic acid (C14:0). Various extraction methods were tested, including ultrasonication (S), enzymatic extraction (E), and combinations of ultrasonication-Soxhlet extraction (US), enzymatic-ultrasonication (EU), enzymatic-Soxhlet extraction (ES), and enzymatic-ultrasonication-Soxhlet extraction (EUS). The ES method produced the highest lipid yield of 21.5 %, a 15-fold increase compared to that of the S method alone. Physicochemical analysis of the extracted lipids showed properties suitable for biodiesel production, although further refinement is required to fully meet the quality standards. This study demonstrates the potential of optimised extraction techniques to significantly enhance lipid recovery from macroalgae, thereby contributing to the development of sustainable marine-biofuel resources. Further research is required to refine these methods and explore their large-scale applicability in the field.
Enzymatic Potential and Antifungal Susceptibility Profile of Aspergillus terreus Against Essential Oils.
Sana S, Sana N, Nadeem A … +9 more , Nazir L, Sattar R, Ali S, Ullah N, Ali El Hadi Mohamed R, Al-Hoshani N, Alwethaynani MS, Al-Joufi FA, Aziz T
J Oleo Sci · 2026 · PMID 41485895 · Publisher ↗
Aspergillus terreus is a pathogen as well as an industrial organism. Current study deals with in vitro evaluation of A. terreus as a potential candidate for starch-based industries and susceptibility of toxigenic isolate...
Aspergillus terreus is a pathogen as well as an industrial organism. Current study deals with in vitro evaluation of A. terreus as a potential candidate for starch-based industries and susceptibility of toxigenic isolates to plant essential oils. Conventionally identified A. terreus soil isolates (n=25) were screened for mycotoxin production by TLC. Non- toxigenic isolates were selected for starch hydrolysis using starch agar. Toxigenic A. terreus were selected for antifungal activity of plant-derived essential oils (Nigella sativa, Elettaria cardamomum, Eucalyptus globulus, Cinnamomum verum Cuminum cyminum, and Syzygium aromaticum) by agar well diffusion and micro-broth dilution method. The lowest minimum inhibitory concentration (MIC ≥ 0.65±0.22µL/mL) was observed for Cuminum cyminum. So, it was used for inhibitory effect on growth and toxin production in broken grains. Cuminum cyminum EO inhibited the growth of A. terreus (0.00±0.00 cfu/g) in inoculated group and OTA production was also close to uninoculated group. Starch hydrolysis to colony diameter ratio helped for selection of isolates for further experiments. In starch hydrolysis, two isolates AST-01 and AST-02 produced highest ratios, which were 2.25±.08 and 1.76±.04 respectively. Influence of maize flour, wheat bran and rice husk with varying concentration, incubation temperature and pH were evaluated on starch hydrolysis potential. The hydrolytic potential quantified by dinitorosalisylic acid (DNS) method. A. terreus AST-02 had the highest hydrolytic potential (102.96±2.61IU) under incubation of 3% wheat bran at 37 °C and pH 6.0. It is concluded that A. terreus is a potential candidate for starch-based industries and further crop contamination by toxigenic species could be curtailed using essential oil as a feed preservative.
JIS Reference Liquid Detergent Considering the Characteristics of Commercially Available Liquid Detergents.
Goto S, Oya M, Kuwabara S … +4 more , Miyamae Y, Yamada I, Nomura M, Hyodo R
J Oleo Sci · 2026 · PMID 41485894 · Publisher ↗
In recent years, Japan has been moving away from powder detergents to liquid detergents, but only powder types have been set as standard indicator detergents for JIS detergency tests. Therefore, optimizing the liquid ref...
In recent years, Japan has been moving away from powder detergents to liquid detergents, but only powder types have been set as standard indicator detergents for JIS detergency tests. Therefore, optimizing the liquid reference detergent composition, the standard model for commercial liquid detergents in the JIS K 3362 revision for household synthetic detergents, was studied based on the detergency and mechanism of commercial liquid and powder detergents. A JIS standard liquid composition was proposed based on the AATCC liquid detergent composition (the 2003 AATCC standard reference liquid laundry detergent), and detergency evaluations were conducted using a Terg-O-Tometer using natural collar dirt-soiled cloth and various commercially available soiled cloths. As a result, in the cleaning experiment using collar dirt-soiled cloth, the new JIS liquid reference detergent showed the same detergency as the conventional JIS powder detergent and commercial liquid detergents. It also showed the same detergency as commercial liquid detergents for artificial sebum stains, indicating that it is suitable as an indicator detergent for commercial liquid detergents. However, it was confirmed that there are some points to note, such as the fact that liquid detergents have a weaker alkaline component and, therefore, have a lower detergency for artificial sebum stains than powder detergents and that the new JIS reference liquid detergent has a higher cleaning power for triacylglycerol stains than commercially available liquid and powder detergents due to their high surfactant concentration.
Resonant Properties of Chemisorbed Soft Materials on a MHz-Oscillating Solid-liquid Interface.
Yoshimoto M, Kurosawa S, Tanaka M
J Oleo Sci · 2026 · PMID 41485893 · Publisher ↗
In terms of resonant lengths, the behavior of chemisorbed soft materials on a MHz-oscillating solid-liquid interface was investigated using a quartz crystal microbalance (QCM). As chemisorbed materials, we used self-asse...
In terms of resonant lengths, the behavior of chemisorbed soft materials on a MHz-oscillating solid-liquid interface was investigated using a quartz crystal microbalance (QCM). As chemisorbed materials, we used self-assembled monolayers (SAMs) formed from three types of mercapto oligo(ethylene oxide) methyl ethers, each with a single molecular weight: HS(CHCHO)CH, HS(CHCHO)CH, and HS(CHCHO)CH. Systematic variation in the concentrations of sucrose solutions resulted in corresponding changes in their viscosity and density. In addition, it is well known that the Kanazawa equation can qualitatively explain the relationship between the resonant frequency shift (ΔF) of the QCM and the solution's viscosity and density. Therefore, we investigated the relationship between the ΔF of the QCM, both without and with a SAM, and the concentrations of sucrose solutions. The attempt showed that, for the ratios of SAM thicknesses to resonant lengths below 50 %, the experimental results of ΔF quantitatively corresponded to the Kanazawa equation. The experimental results suggest that the equation describing the resonant length could appropriately evaluate the experimental data. Based on those results, the applicability of the QCMs with the SAMs of HS(CHCHO)CH and HS(CHCHO)CH to a bubble-free nonlinear chemical oscillator led to quantitative analysis.
Errata for J. Oleo Science, Vol.74, No.9 p.820 (2025).
J Oleo Sci · 2025 · PMID 41320247 · Publisher ↗
Abstract loading — click title to view on PubMed.
Renal BDNF mRNA Downregulation in a Mouse Model of Adenine-Induced Chronic Kidney Disease.
Nakajima K, Ohgami M
J Oleo Sci · 2025 · PMID 41320246 · Publisher ↗
Brain-derived neurotrophic factor (BDNF), a neurotrophic factor essential for brain function, is also produced in the kidneys and reportedly exerts kidney protective effects. However, whether renal BDNF levels decrease i...
Brain-derived neurotrophic factor (BDNF), a neurotrophic factor essential for brain function, is also produced in the kidneys and reportedly exerts kidney protective effects. However, whether renal BDNF levels decrease in chronic kidney disease (CKD) remains elusive. To investigate how CKD affects renal BDNF levels, we used an adenine-induced murine CKD model. Administration of 0.1% adenine solutions via free drinking for 1 week resulted in a marked reduction of BDNF expression in the kidneys. Our results suggest that CKD progression reduces kidney BDNF levels and that this model could be useful for developing BDNF-targeted strategies for CKD prevention and therapy.
Precipitation-Dissolution Phase Diagrams of Lead Halide Perovskites in Solutions for Single Crystallization in Capillaries.
Watanabe S, Inouchi S, Date T
J Oleo Sci · 2025 · PMID 41320245 · Publisher ↗
Organic-inorganic halide perovskite materials have attracted significant attention in the field of optoelectronics, and their single crystals, in particular, exhibit high carrier mobility. However, because single crystal...
Organic-inorganic halide perovskite materials have attracted significant attention in the field of optoelectronics, and their single crystals, in particular, exhibit high carrier mobility. However, because single crystals were typically grown from highly polar donor solvents, the crystallization process was complicated by the formation of complexes, solvated crystals, and polymorphs. Despite these complexities, many studies have relied on empirical trial-and-error approaches, without systematically integrating the crystallization process into crystal engineering through phase diagrams. In this study, we constructed a phase diagram of methylammonium lead iodide perovskite and clarified its solubility and precipitation curves. From van't Hoff analysis, we determined the enthalpy and entropy of dissolution. Based on the supersaturation conditions obtained from the precipitation and solubility curves, we successfully grew single crystals. These insights are expected to provide important guidance for the fabrication of solar cells, photodetectors, and integrated devices.
A Comprehensive Investigation of Equisetum ra-mosissimum: Phytochemical Composition, Antioxi-dant Potential, and Enzyme Inhibition Activity.
Dikici E
J Oleo Sci · 2025 · PMID 41320244 · Publisher ↗
This study provides a comprehensive investigation of the phytochemical composition, antioxidant capacity, and enzyme inhibition properties of Equisetum ramosissimum, a medicinal plant traditionally used in Turkey. The ma...
This study provides a comprehensive investigation of the phytochemical composition, antioxidant capacity, and enzyme inhibition properties of Equisetum ramosissimum, a medicinal plant traditionally used in Turkey. The main aim was to characterize its bioactive compounds and evaluate their biological relevance using modern analytical techniques. Ethanolic extracts of the plant were analyzed by LC-MS/MS, enabling the identification and quantification of 13 phenolic compounds, including kaempferol (1458.11 µg/L), vanillic acid (1002.26 µg/L), and resveratrol (424.12 µg/L). Antioxidant activity was assessed through DPPH, ABTS, FRAP, and CUPRAC assays, where the extract demonstrated strong radical scavenging and metal reducing capacity. Enzyme inhibition studies revealed significant inhibitory effects on AChE, BChE, and α-glucosidase, with IC values comparable to standard inhibitors. These findings indicate that E. ramosissimum is a rich source of phenolic compounds with strong antioxidants and enzyme inhibitory properties. The originality of this work lies in its systematic evaluation of Turkish E. ramosissimum populations, highlighting their potential as natural therapeutic agents for managing oxidative stress-related diseases, neurodegenerative disorders, and diabetes.
Chemical Composition, Antioxidant and Antimicrobial Activities of the Essential Oil from the Leaves of Tunisian Vachellia tortilis at Various Harvest Times.
Herchi W, Salem N, Khammassi S … +1 more , Flamini G
J Oleo Sci · 2025 · PMID 41320243 · Publisher ↗
The chemical composition of the essential oil from the leaves of Vachellia tortilis, collected from Tunisia, at the three developmental stages, was analysed by GC/MS. Seventy-five compounds were identified. GC-MS analysi...
The chemical composition of the essential oil from the leaves of Vachellia tortilis, collected from Tunisia, at the three developmental stages, was analysed by GC/MS. Seventy-five compounds were identified. GC-MS analysis showed qualitative and quantitative variation during Vachellia tortilis seed maturation. The essential oil was dominated by a large amount of apocarotenes (38.6-47.1%) and non-terpene derivatives (34.7-49.6%). The major components of the oil were (E)-geranylacetone (15.6-25.3%), guaiacylacetone (4.7-12.9%), p-menth-4-en-3-one (3.1-10.9%), cis-2-methyl-3-oxo-cyclohexane-butanal (4.5-8.7%), (E)-β-ionone (5.4-8.2%) and hexahydrofarnesylacetone (2.4-5.6%). The highest antioxidant activity was exhibited by essential oils at intermediate stage. Essential oils at immature and intermediate stages showed higher antimicrobial activity than those at mature stage. The present findings allowed us to choose the optimal harvesting period to have the maximum effectiveness of the essential oil in terms of biological activities.
Development of Turmeric Oil-based 5-Fluorouracil Loaded Lipid Nanogel for Improved Dermatokinetic and Drug Deposition for Skin Cancer.
Md S, Ibrahim IM, Al-Rabia MW … +2 more , Iqubal MK, Warsi MH
J Oleo Sci · 2025 · PMID 41320242 · Publisher ↗
Hydrophilicity and side effects are the major problems in the effective and safe use of 5-fluorouracil (5FL) for skin cancer. Lipid-based nanocarriers, especially nanostructured lipid carriers (NLC), show specific advant...
Hydrophilicity and side effects are the major problems in the effective and safe use of 5-fluorouracil (5FL) for skin cancer. Lipid-based nanocarriers, especially nanostructured lipid carriers (NLC), show specific advantages of high drug loading and low drug leakage for successful delivery of 5FL. Therefore, a lipid-nanogel system of 5FL-loaded NLC (5FL-LNG) for topical delivery was aimed at in the present study. For NLC development, a mixture of turmeric oil and labrasol (70:30) was determined as oil, and then solid lipid (tefose 1500) and surfactant (Tween 80) were selected. Central composite design was used for formulation optimization. Design suggested a formulation prepared with 1.5% binary mixture, 6% surfactant, and 8 min of sonication time for the optimized 5FL-NLC. Optimized 5FL-NLC had particle size, zeta potential, entrapment efficiency, and transmittance values of 223.47±2.42 nm, -14.90±0.95 mV, 78.81±1.63%, and 94.79±0.58%, respectively. The DSC revealed homogeneous and amorphous nature of 5FL-NLC. 5FL-LNG formulation was prepared with 1% w/w Carbopol 934 and compared with conventional Carbopol 934 gel of 5FL. Spreadability and extrudability were better for 5FL-LNG and were further confirmed by texture analysis. In vitro release and skin permeation (both in vitro and ex vivo) of 5FL was better for 5FL-LNG compared to the conventional gel. Dermatokinetic data showed that C and AUC values were significantly higher for 5FL-LNG. Confocal laser scanning microscopy confirmed noticeable betterment of 5FL delivery to skin epidermis and dermis from 5FL-LNG compared to conventional gel. Overall, developed 5FL-LNG formulation demonstrated its significant results for effective topical application and, therefore, could be subjected to further pre-clinical and clinical studies.
Ameliorative Role of DHA/EPA (Omega-3 PUFAs) in Vascular Fibrosis and Metabolic Disturbances in Rats with Metabolic Syndrome.
Xu B, Chen S, Ou J
J Oleo Sci · 2025 · PMID 41320241 · Publisher ↗
Metabolic syndrome (MetS), a leading non-communicable disease (NCD), has become a pronounced health problem. It is typified by obesity, insulin insensitivity, hypertension, and dyslipidemia, with obesity playing a centra...
Metabolic syndrome (MetS), a leading non-communicable disease (NCD), has become a pronounced health problem. It is typified by obesity, insulin insensitivity, hypertension, and dyslipidemia, with obesity playing a central pathogenic role. Excessive adipose tissue accumulation promotes chronic inflammation, insulin resistance, and widespread metabolic dysregulation, significantly increasing the risk of systemic diseases. We established a MetS rat model via a high-fat/high-glucose (HFHG) diet. Rats were assigned to three groups: a normal control (Control), a MetS model (MetS), and a MetS group was treated with Omega-3 polyunsaturated fatty acids (PUFAs), including docosahexaenoic acid (DHA) and eicosapentaenoic acid (EPA) (MetS + Omega-3 PUFAs). Compared to Controls, MetS rats exhibited marked increases in body weight (over 20%), triglycerides (TG), insulin (INS), low-density lipoprotein cholesterol (LDL-C), total cholesterol (TC), homeostasis model assessment of insulin resistance (HOMA-IR), and fasting plasma glucose (FPG), confirming successful model induction. Histological analysis revealed pronounced aortic endothelial fibrosis in MetS rats, which was notably alleviated by omega-3 PUFA treatment. Oxidative-stress markers were significantly improved in the "MetS + Omega-3 PUFAs" group relative to the untreated MetS group. Additionally, lipid parameters (TG, TC, LDL-C) and insulin levels were substantially reduced, approaching those of the Control group. Collectively, these findings indicate that omega-3 PUFAs mitigate oxidative stress, correct metabolic dysfunction, and attenuate vascular fibrosis in MetS rats, underscoring their therapeutic potential in managing dysfunctional metabolism.
Effects of Gelatin on Flavor Release at Low-Fat Spread Interface.
Tsukagoshi S, Suzuki-Iwashima A, Kaneshiro F … +1 more , Tanaka L
J Oleo Sci · 2025 · PMID 41320240 · Publisher ↗
In this study, we aimed to elucidate the effect of gelatin, a water-phase component, on the flavor release mechanism in water-in-oil (W/O) emulsions, used as low-fat spread model. Rapeseed oil served as the oil phase, an...
In this study, we aimed to elucidate the effect of gelatin, a water-phase component, on the flavor release mechanism in water-in-oil (W/O) emulsions, used as low-fat spread model. Rapeseed oil served as the oil phase, and monoolein was employed as the emulsifier. Two W/O emulsion samples were prepared: UMG, containing only sodium chloride in the aqueous phase, and Gel-UMG, containing both gelatin and sodium chloride. Subsequently, model flavor components were incorporated into these emulsions, and the influence of gelatin in the aqueous phase on flavor release was evaluated using SPME-GC/MS. Analysis of the flavor components revealed that, in the adsorption temperature range of 30°C-50°C, fatty acid release from Gel-UMG was substantially lower than that from UMG. The interactions between gelatin and the flavor components were examined using a quartz crystal microbalance (QCM). Fatty acids, including propanoic and butanoic acids, interacted with gelatin, increasing the resonance frequency, whereas other flavor components with similar hydrophobicity (1-butanol, 2-butanol, butanal, ethyl acetate, and γ-hexalactone) showed no interaction, as indicated by the unchanged resonance frequency. Moreover, electrical conductivity, interfacial storage modulus, and water droplet size measurements collectively suggested the presence of gelatin at the oil-water interface. These findings indicate that gelatin and fatty acids in the aqueous phase of W/O emulsions may interact via the oil-water interface. This interaction likely inhibits their release into the vapor phase, decreasing the amount of fatty acids released from Gel-UMG, as detected using GC/MS analysis.
Effects of Addition of 1,3-Dipalmitoyl-2-palmitoleoyl-sn-glycerol on the Physical Properties of Cocoa Butter and Fat Bloom Stability of Dark Chocolate.
Watanabe S, Ishiwari K, Yoshikawa S … +1 more , Sato K
J Oleo Sci · 2025 · PMID 41320239 · Publisher ↗
Fat bloom is a serious problem that occurs when chocolate and related products are stored at high temperatures for long periods. Various techniques have been used to retard and prevent the fat bloom phenomenon. In this s...
Fat bloom is a serious problem that occurs when chocolate and related products are stored at high temperatures for long periods. Various techniques have been used to retard and prevent the fat bloom phenomenon. In this study, we investigated the ability of a new type of symmetrical triacylglycerol, 1,3-dipalmitoyl-2-palmitoleoyl-sn-glycerol (PPoP), containing palmitic acid (P) at positions sn-1 and sn-3 and palmitoleic acid (Po) at position sn-2, to retard or prevent fat bloom formation. An XRD study of cocoa butter (CB) and TAG mixtures of CB/PPoP and CB/POP revealed that CB and CB/POP mixtures transformed into polymorphic Form VI under conditions where the storage temperature was gradually raised from 20°C to 28°C over a period of 100 days. In contrast, the XRD patterns of CB/PPoP mixtures after 100 days of storage was similar to that of Form V of CB, and unlike that of Form VI of CB. These results are the first to indicate that the adding PPoP may prevent or delay the polymorphic transformation of CB from Form V to Form VI. We also investigated the physical properties and fat bloom stability of cocoa butter equivalent (CBE) and dark chocolates made with different PPoP concentration and found that the solid fat contents of CBE decreased with increasing amounts of PPoP. the addition of PPoP tended to soften the dark chocolate. Finally, we found that the fat bloom formation of dark chocolate under thermal cycle storage conditions between 18°C-30.5°C and 20°C-32°C could be retarded by adding of PPoP. However, further studies are warranted to elucidate the PPoP-induced retarding mechanisms during the transition from Form V to Form VI.
Glycerol Effect on the Microstructure and Rheology of Lyotropic Liquid Crystals Formed in Sucrose Laurate/Glycerol/Water Systems.
He X, Huang H, Zhong L … +4 more , Huang C, Gao X, Zhou J, Li X
J Oleo Sci · 2025 · PMID 41183910 · Publisher ↗
To investigate glycerol effect on the microstructure and rheology of lyotropic liquid crystals formed in sucrose laurate/glycerol/water systems, a series of pseudo-ternary surfactant system are prepared and investigated....
To investigate glycerol effect on the microstructure and rheology of lyotropic liquid crystals formed in sucrose laurate/glycerol/water systems, a series of pseudo-ternary surfactant system are prepared and investigated. SWAXS data confirms the presence of hexagonal liquid crystal phase (H phase) as the predominant phase in sucrose laurate/water systems with a medium-to-high surfactant concentration. These changes in SAXS pattern demonstrate that glycerol incorporation into aqueous phase in sucrose laurate/water system would reduce the long-range positional ordering of cylindrical micelles in H phase, even results in a transformation of H phase to other disordered phases. Moreover, the effect gradually diminishes with growing surfactant content but still remains in these systems. However, The WAXS profiles indicate that the short-range order of hexagonal liquid crystals is also affected by the glycerol addition. These conclusions are corroborated by polarized light microscope observations and subsequent rheological tests. Variable-temperature SWAXS experiments show that glycerol incorporation significantly reduces the critical temperature where a drastic decrease in the long-range positional ordering of the H phase occurs. Steady shear rheology confirms that glycerol incorporation leads to a decrease in the structural ordering of H phase. Dynamic frequency sweep experiments indicate the strength or stiffness of the liquid crystals decrease with the addition of glycerol. However, these effects become less pronounced with the increase of surfactant content.
Adsorption and Lubrication of Mixtures Consisting of Cationic Surfactant and Long-Chain Alcohol in Aqueous Media.
Sakai K, Tomari H, Tsunoda H … +4 more , Arakawa K, Tsuchiya K, Akamatsu M, Sakai H
J Oleo Sci · 2025 · PMID 41183909 · Publisher ↗
We studied the adsorption and lubrication of cationic surfactants on silica in the presence of 1-hexadecanol (C16OH). The surfactants employed in this study were quaternary ammonium salts with different alkyl chain lengt...
We studied the adsorption and lubrication of cationic surfactants on silica in the presence of 1-hexadecanol (C16OH). The surfactants employed in this study were quaternary ammonium salts with different alkyl chain lengths (alkyltrimethylammonium chloride, CnTAC, where n is the alkyl chain length of 14, 16, and 18). The mixing of CnTAC, C16OH, and water generally yields the structure of "α-form hydrated crystals" or the structural unit of "lamellar gel networks" at appropriate compositions. In these structures, the alkyl chains of CnTAC and C16OH are packed in the hexagonal arrangement within lamellar bilayers. Quartz crystal microbalance with dissipation monitoring technique suggested that the adsorbed vesicular aggregates of CnTAC and C16OH flattened on the silica surface. The larger vesicular aggregates formed a viscosity-dominant thicker adsorption film in the initial stage, and then experienced the flattening more significantly to yield an elasticity-dominant thin film. At a given size of the vesicular aggregates, the alkyl chain length of CnTAC did not make large impact on the adsorption in their steady state. The adsorption film achieved excellent lubricity, being irrespective on the size of the vesicular aggregates and the alkyl chain length of CnTAC. We anticipate that these findings will be useful in formulating "α-gels" in various personal care applications.
Production of Linoleic Acid-rich Oil from Canola and Grapeseed Oils Using Enzymatic Interesterification Reactions with Microwave Irradiation as a Green Technique.
Ramírez S, Arteaga D, Benítez RB
J Oleo Sci · 2025 · PMID 41183908 · Publisher ↗
This study evaluated the incorporation of linoleic acid (LA) into canola oil (CO) through enzymatic interesterification reactions aided by microwave irradiation and catalyzed by TL IM lipase enzyme (sn-1,3). To optimize...
This study evaluated the incorporation of linoleic acid (LA) into canola oil (CO) through enzymatic interesterification reactions aided by microwave irradiation and catalyzed by TL IM lipase enzyme (sn-1,3). To optimize the process and identify the best reaction conditions, an experimental design utilizing a central composite experiment was implemented to analyze the effects of time (1.5-3.5 h), the reactant ratio LA:CO (0.3:1) and temperature (50-75°C). The linoleic acid (LA) extract was obtained from grapeseeds through extraction and purification techniques. Under optimal conditions (73°C, 48 min and an LA:CO ratio of 1.2), a 69.80% incorporation of linoleic acid was achieved. Moreover, the reactant ratio emerged as the most crucial factor shaping the outcome of the reaction, underscoring its vital role in achieving optimal results. The quality analysis of the crude oil, obtained as a reaction product, revealed a variation in the saponification index (177.5 ± 0.7 mg KOH/g), with respect to the starting substrates, indicating modifications in its composition. This value is higher than the saponification index reported for canola oil (172.82 ± 1.92 mg KOH/g) but lower than that of grapeseed oil (184.56 ± 0.45 mg KOH/g). This variation may be attributed to differences in fatty acid composition; specifically, the crude oil contains a lower proportion of long-chain fatty acids compared to canola oil. This study emphasizes the potential of grapeseeds as a sustainable source of polyunsaturated fatty acids (PUFA). Additionally, the use of microwave irradiation has proven to be a viable alternative to traditional methods by reducing reaction times, minimizing energy consumption and increasing yield percentages. These advancements support green chemistry, the circular economy and the creation of value-added products that can benefit various industries.
Changes of Lipid Oxidation and Volatile Components in Ready-to-eat Fried Loach during Storage.
Wu J, Cai L, Lin N … +4 more , Wang H, Fu H, Guo Q, Li Y
J Oleo Sci · 2025 · PMID 41183907 · Publisher ↗
This study aimed to examine the changes and correlations between fatty acids and volatile organic compounds in ready-to-eat fried loach (RTE-FL) over 10 days of storage by Schaal oven tests. The results showed that the p...
This study aimed to examine the changes and correlations between fatty acids and volatile organic compounds in ready-to-eat fried loach (RTE-FL) over 10 days of storage by Schaal oven tests. The results showed that the peroxide value (POV) increased to 16.64 mg/100 g within first 4 days of storage and decreased over the next 6 days. The thiobarbituric acid reactive substances (TBARS) value increased gradually from 0.51 mg MDA/kg to 1.45 mg MDA/kg, while the sensory evaluation score showed the opposite trend. OPLS-DA combined with ROAV analysis revealed the 7 flavor substances with VIP ≥ 1 and ROAV ≥ 1 were identified as key differential flavor compounds. Furthermore, γ-linolenic acid (C18:3n6), linoleic acid (C18:2n6c), arachidonic acid (C20:1), pentadecenoic acid (C15:1), heneicosanoic acid (C21:0) and palmitic acid (C16:0) were significantly correlated with substances with rancid and pungent odors such as Hexanal-D (ROAV=29.29-62.09), Butanal-D (ROAV=15.95-35.59), 2-methyl propanal (ROAV=332.53-411.37), and 2-methylbutanal-D (ROAV=69.67-204.73). These findings provide valuable insights into flavor changes in RTE-FL during storage.
Pulsed Microwave-Induced Growth Enhancement of Euglena gracilis Microalgae - Approach for Improved Industrial Cultivation.
Horikoshi S, Kawasako S, Serpone N
J Oleo Sci · 2025 · PMID 41183906 · Publisher ↗
This study investigates the effects of microwave radiation on Euglena gracilis (Euglena) during brief exposure periods, as well as the subsequent enhancement of growth under different conditions. The growth patterns of E...
This study investigates the effects of microwave radiation on Euglena gracilis (Euglena) during brief exposure periods, as well as the subsequent enhancement of growth under different conditions. The growth patterns of Euglena in these environments were systematically analyzed. Additionally, the study examined whether the growth rate of microwave-irradiated heterotrophic cultures of Euglena could be improved with 24-hour or shorter light exposure, which is an important factor in the industrial production of this organism. Results indicated that a 1-minute pulse of microwave radiation caused a twofold increase in growth compared to the control, even under autotrophic culture conditions without added CO. Furthermore, there was a significant 2.6-fold increase in growth when daily light exposure was reduced from 24 to 10 hours.
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