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Journal of Oleo Science

Mana Yanagiba, Hideyuki Shinmori, Takafumi Naganuma
In this study, waste peach (WP) liquid culture conditions for the maintenance of high triacylglycerol (TG)-accumulation ability in Lipomyces wild-type strain, obtained from WP plate medium were investigated. As the concentration of WP juice was high, the medium viscosity became high, and TG accumulation ability was suppressed. In a 5-L jar fermenter, the negative influence of viscosity on TG-accumulation ability was significantly improved by an agitation speed of 150 rpm (0.4 vvm). Where a bench scale pilot plant (90-L jar fermenter) operated at 40 rpm, TG-accumulation ability reached 6...
February 13, 2019: Journal of Oleo Science
Xiaodan Wang, Shuang Chen, Qiang Cui, Rui Li, Xibo Wang, Lianzhou Jiang
The effects of pH on the freeze-thaw stability of glycated soy protein isolate (SPI) and soy protein isolate hydrolysate (SPH) were studied. The covalent compounds were prepared by conjugating SPI, SPH and dextran under heated Maillard reaction, which the macromolecules were named SPI-D and SPH-D. SDS-PAGE analysis verified that SPI-D and SPH-D form a covalent bond through the Maillard reaction. Afterwards, the effects of pH on the freeze-thaw stability of SPI, SPI-D and SPH-D emulsions were evaluated. The covalent conjugate stabilized emulsions improved the stability of the emulsions to pH stress...
February 13, 2019: Journal of Oleo Science
Zhe Tang, Jianhui Su
A simple solid base catalyst, ammonium aluminum carbonate hydroxide (AACH), was prepared and its structure was characterized by many technologies, including XRD, FT-IR, SEM, BET and Elemental Analysis. The prepared catalyst was used to catalyze the conversion of glucose into 5-hydroxymethylfurfural (HMF) in ionic liquid 1-butyl-3-methylimidazolium chloride ([Bmim]+ Cl- ) and dimethyl sulfoxide (DMSO) mixtures. Various reaction conditions, including catalyst loading, reaction temperature, reaction duration and solvent, were investigated...
February 13, 2019: Journal of Oleo Science
Nian-Xia Sun, Li-Tao Tong, Ting-Ting Liang, Li-Li Wang, Li-Ya Liu, Xian-Rong Zhou, Su-Mei Zhou
The nutritional components in oat and tartary buckwheat had been assessed to have cholesterollowering effects. However, The effect of oat and tartary buckwheat based-food (OF) on cholesterol-lowering and gut microbiota in hypercholesterole hamsters was still limited studied because they are usually consumed in whole gran as well as after being processed. In this study, normal diets, high fat diet (HFD) with/without OF were fed to hamsters for 30 days respectively and growth parameters, metabolic parameters, and gut microbiota were investigated, respectively...
February 13, 2019: Journal of Oleo Science
P Prasad, S Savyasachi, L Prasanna Anjaneya Reddy, R V Sreedhar
Buglossoides arvensis is indigenous to India and its seed oil is rich in unique and nutritionally important omega-3 fatty acid namely, stearidonic acid (SDA). It is a non-conventional oil seed plant and needs to be agronomically adapt for commercial utilization. In the present study, oil extracted from the agronomically adapted high yielding cultivar of B. arvensis seeds was analyzed for its oil content, fatty acid (FA) composition, physico-chemical characteristics, total lipids and triacylglycerol molecular species...
February 13, 2019: Journal of Oleo Science
Saad M Alshahrani
Ostrich oil, a natural bird fat oil, has significant biological activities in preventing various pains and inflammation. The aim of the current study was to develop ostrich oil loaded nanoemulsions to check the anti-inflammatory efficacy. The developed nanoemulsions(F1-F3) were evaluated in vitro for various physicochemical parameters including thermodynamic stability, nanoemulsifying potential, mean droplet size, polydispersity index (PDI), zeta potential (ZP), viscosity (η), refractive index (RI) and transmittance (%T)...
February 13, 2019: Journal of Oleo Science
Keisuke Tanaka, Yuki Hirai, Toshiyuki Suzuki, Masaaki Akamatsu, Kenichi Sakai, Hideki Sakai
Monohexadecyl phosphate, neutralized by L-arginine (C16MP-Arg), forms an α-gel (α-type hydrated crystal) with water. In this study, we characterized the behavior of water in the C16MP-Arg α-gel system by means of small/wide angle X-ray scattering (SWAXS), Fourier transform infrared spectroscopy (FT-IR), differential scanning calorimetry (DSC), and 1 H nuclear magnetic resonance (NMR) spectroscopy. An increased water concentration resulted in an increase in the d-spacing of the lamellar bilayers as well as an increased wavenumber for the O-H stretching vibration peak...
February 13, 2019: Journal of Oleo Science
Piroonporn Srimongkol, Nuttha Thongchul, Saranya Phunpruch, Aphichart Karnchanatat
To investigate the potential of application of marine cyanobacterium for concurrent biomass production and ammonium removal, Synechococcus sp. VDW was cultured under different conditions in medium containing varying concentrations of NH4 Cl. Response surface methodology (RSM) was then used to build a predictive model of the combined effects of independent variables (pH, inoculum size, ammonium concentration). At the optimum conditions of initial pH 7.4, inoculum size 0.17 (OD730) and ammonium concentration 10...
February 13, 2019: Journal of Oleo Science
Takamasa Watanabe, Yoshiaki Yamamoto, Maki Miura, Hiroyuki Konno, Shigekazu Yano, Yoshimune Nonomura
Bacterial flora on the skin surface contains Staphylococcus aureus (S. aureus) and Staphylococcus epidermidis (S. epidermidis) which causes rough skin and atopic dermatitis and enhances innate immunity, respectively. In this study, minimum inhibitory concentration (MIC) was evaluated for six saturated fatty acids and two unsaturated fatty acids against S. aureus and S. epidermidis. The antimicrobial behavior in the liquid medium was categorized into three groups. The first was the selective antibacterial activity group comprising myristic acid (C14:0 fatty acid), palmitoleic acid (C16:1 fatty acid), and oleic acid (C18:1 fatty acid) and preferentially displayed antimicrobial activity for S...
February 13, 2019: Journal of Oleo Science
Hiroshi Takahashi, Ryota Watanabe, Kenichi Nishimura, Taro Moriwaki
A recent study has shown that the addition of ceramide to adhesive materials of medical sheets or tapes improves or maintains skin barrier functions despite the irritation and damage caused by the repeated removal of the sheet or tape. This fact may imply that ceramide molecules are released from the adhesive material and penetrate the skin. In this study, we investigated whether ceramide molecules are released from a UV-curable acrylic adhesive resin (acResin® ) sheet containing ceramide molecules attached to a cultured skin sample by estimating the local ceramide concentration from the data obtained by synchrotron Fourier transform infrared micro-spectroscopy analysis...
February 13, 2019: Journal of Oleo Science
Beibei Zhao, Hua Li, Tao Lan, Di Wu, Li Pan, Zhicheng Chen
High-purity trilinolein and triolein were prepared by Novozym 435-catalyzed esterification reaction combined with column chromatography purification in this study. Firstly, linoleic acid and oleic acid were respectively extracted from safflower seed oil and camellia seed oil by urea adduct method. Secondly, trilinolein and triolein were synthesized through Novozym 435 catalyzed esterification of glycerol and fatty acids. The best synthesis conditions were obtained as follows: reaction temperature 100°C, residual pressure 0...
January 17, 2019: Journal of Oleo Science
Monika Michalak, Anna Kiełtyka-Dadasiewicz
Vegetable oils, which are a rich source of unsaturated fatty acids, phytosterols, vitamins and antioxidants, have a significant effect on the functioning and development of the body and contribute to health maintenance. They can be obtained from seeds, fruit stones, fruit, nuts or sprouts. This study discusses various species of plants that are sources of nut oils consumed in the daily diet and also used in the pharmaceutical and cosmetics industries.
January 17, 2019: Journal of Oleo Science
Isam A Mohamed Ahmed, Fahad Y Al-Juhaimi, Mehmet Musa Özcan, Magdi A Osman, Mustafa A Gassem, Hesham A A Salih
In this study, physico-chemical properties, fatty acid composition, and tocopherol contents of several walnut kernel oils obtained through cold-press and Soxhlet extractions were investigated. The acidity, peroxide, and unsaponifiable matter of oil samples extracted in the Soxhlet system were found higher. Total phenol contents of the oils obtained in cold press and Soxhlet extraction systems were 121.9 mg GAE/100g (Kaman-2) and 154.6 mg GAE/ 100g (Büyükoba), and between 135.9 mg GAE/100g (Kaman-2) and 163...
January 17, 2019: Journal of Oleo Science
Yuki Manabe, Takashi Hirata, Tatsuya Sugawara
Lipid rafts are microdomains present in the plasma membrane, which are enriched in sphingolipids and cholesterol. Certain kinases and adaptor proteins, which are important for cellular signaling, are also concentrated in lipid rafts. Several immunoreceptors are known to translocate into lipid rafts upon binding with their ligands to efficiently induce the signaling pathways, and hence, receptor translocation could be the new target for pleiotropic suppression of inflammatory responses. In this study, we evaluated the effects of carotenoids on ligand-induced lipid raft translocation of the receptors using B cell receptors (BCRs) as a model...
January 17, 2019: Journal of Oleo Science
Min Pang, Yuanfei Ge, Lili Cao, Jieshun Cheng, Shaotong Jiang
Properties, crystallization behavior and oxidative stabilities of enzymatically catalyzed interesterified fats were investigated in this study. Interesterified fats were catalyzed by Lipase Lipozyme RM IM, through reaction from beef tallow (BT), palm stearin (PS) and camellia oil (CO)under the mass ratio of 7.55: 2.45: 4 (BT: CO: PS) using 3.65% (w/w) of Lipozyme RM IM at 72.6℃ for 3.85 h. After reaction, interesterified fats with 36.8℃ sliding melting point (SMP) was obtained. Physicochemical properties (fatty acid profile, triacylglycerol profile, solid fat content (SFC), melting and crystallization curve, polymorphic forms) of interesterified fats were characterized...
January 17, 2019: Journal of Oleo Science
Yukiko Kinjo, Makoto Takahashi, Naoto Hirose, Masami Mizu, De-Xing Hou, Koji Wada
Stress is a part of everyday life, but excessive stress can be related to diverse diseases. Recently, oral intake of a non-centrifuged cane sugar, Kokuto, was reported to produce potential anti-stress effects in humans. However, the molecular components associated with the anti-stress property of Kokuto remain mostly unknown. Therefore, we focused on the non-sugar component (NSC) fractions of Kokuto, and investigated how serum corticosterone level (used as a stress marker) and antioxidant activity were affected in restraint-stressed mice treated with NSC fractions obtained from the elusion on HP-20 resin with 25%, 50%, 75%, and 100% aqueous methanol (MeOH) solutions...
January 17, 2019: Journal of Oleo Science
Keqing Hu, Zongyao Huyan, Qiaona Geng, Xiuzhu Yu
A Fourier transform infrared (FTIR) spectroscopy with infrared quartz cuvette (IQC) as spectral accessory method was developed to determine acid value (AV) of edible oils. The absorption peak at 5680 cm-1 /5487 cm-1 ascribed to the C-H stretching band was a substitute for the peak of an internal standard. Partial least square (PLS) regression was used for AV calibration, and samples were validated by titrated method. Results showed dilution calibration was feasible for randomly dilution among 6-13:1 (CCl4 : oils, v/v)...
January 17, 2019: Journal of Oleo Science
Naohiro Gotoh, Kazuaki Yoshinaga, Satoshi Kagiono, Yukiko Katoh, Yota Mizuno, Fumiaki Beppu, Toshiharu Nagai, Hoyo Mizobe, Akihiko Yoshida, Koji Nagao
Trans fatty acids (TFA) are considered risk factors for cardiovascular disease. However, detailed information on total content of TFA and TFA isomers and distribution of trans-octadecenoic acid positional isomers in foods consumed in Japan is not available till date. In this study, 250 foods, 169 processed foods and 81 foods derived from ruminant meat or milk, were analyzed. According to the results, most foods contained less than 1.0 g TFA / 100 g food. However, almost all foods containing butter had more than 1...
January 17, 2019: Journal of Oleo Science
Akihiro Kuroda, Karin Sakai, Shoichi Yahagi, Tsubasa Mukawa, Nobumasa Sato, Naoki Nakamura, Daisuke Maezawa, Hitoshi Masaki, Taisuke Banno, Kouichi Asakura
Cosmetic standard poly methyl methacrylate (PMMA) UV evaluation plates, i.e., roughened PMMA plates, are used in the EU and the US for the in vitro evaluation of UV protection abilities of sunscreen, such as in vitro UVA-PF and critical wavelength for the Broad-spectrum approval. In our previous studies, inhomogeneity in the thickness of a pseudo-sunscreen layer applied on a flat quartz plate was observed to alter UV transmission. Thus, the surface roughness of the standard plates should have a significant influence on the in vitro evaluation...
January 17, 2019: Journal of Oleo Science
Shunya Yamamoto, Akio Ohta, Faisal Hossain, Gemala Anjani, Hitoshi Asakawa, Tsuyoshi Asakawa
Water-insoluble genistein was solubilized in aqueous medium by using phospholipid vesicles composed of 1,2-dipalmitoyl-sn-glycero-3-phosphocholine (DPPC) and 1,2-dioleoyl-sn-glycerophosphocholine (DOPC) with 0-30% cholesterol. For each vesicle, the maximum solubilization amount of genistein was investigated by X-ray scattering measurement. In addition, the antioxidant capacity of the solubilized genistein was evaluated by the ABTS assay. Genistein was found to be solubilized by 10-20% and 40-50% of the vesicle concentrations of pure DPPC and DOPC respectively...
December 12, 2018: Journal of Oleo Science
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