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Journal of Oleo Science

Liang-Huei Chen, Yung-Fang Liu, Klaus Krug, Yuh-Lang Lee
The adsorption behavior of an Cu electroplating additive, 3,3 thiobis-(1-propanesulfonic acid sodium salt) (TBPS) in a process of Cu deposition onto a single crystalline Au(111) surface is studied by an in-situ Surface-Enhanced Infrared Absorption Spectroscopy (SEIRAS). The SEIRAS spectra of the TBPS adlayer on a Cu film is investigated first and compared to that on an Au film. These results are utilized to evaluate the characteristics of TBPS adlayer on the electrode surface during the Cu deposition and stripping processes...
May 15, 2018: Journal of Oleo Science
An-Tsung Kuo, Cheng-Lin Tu, Yu-Min Yang, Chien-Hsiang Chang
In this study, a pseudodouble-chained ion pair amphiphile (IPA), hexadecyltrimethylammonium-dodecylsulfate (HTMA-DS), and dialkyldimethylammonium bromide (DXDAB) with different chain lengths were used as the main materials to fabricate positively charged catanionic vesicles with various mole fractions of cholesterol. The effects of cholesterol and DXDAB alkyl chain length on physical stability of the catanionic vesicles were then investigated by size, zeta potential, and Fourier transform infrared analyses...
May 15, 2018: Journal of Oleo Science
Kento Iwai, Soichi Yokoyama, Haruyasu Asahara, Nagatoshi Nishiwaki
A facile method for synthesizing allyl propargyl ethers (APEs) was developed based on the dimerization of propargyl alcohols. The reaction proceeded via an oxaphosphetane intermediate, which was generated without the use of a strong base, thus making this process a pseudo-Wittig reaction under mild reaction conditions. A wide variety of functional groups, including formyl and pyridyl groups were tolerated, thus yielding the corresponding functionalized APEs, which are otherwise not readily prepared via conventional methods...
May 15, 2018: Journal of Oleo Science
Atsadawuth Siangsai, Katipot Inkong, Santi Kulprathipanja, Boonyarach Kitiyanan, Pramoch Rangsunvigit
Sodium dodecyl sulfate (SDS) markedly improved tetrahydrofuran (THF) - assisted methane hydrate formation. Firstly, methane hydrate formation with different THF amount, 1, 3, and 5.56 mol%, was studied. SDS with 1, 4, and 8 mM was then investigated for its roles on the methane hydrate formation with and without THF. The experiments were conducted in a quiescent condition in a fixed volume crystallizer at 8 MPa and 4°C. The results showed that almost all studied THF and SDS concentrations enhanced the methane hydrate formation kinetics and methane consumption compared to that without the promoters, except 1 mol% THF...
May 15, 2018: Journal of Oleo Science
Lu Zhang, Satoru Ueno, Kiyotaka Sato
Most natural lipids contain a complex mixture of individual triacylglycerols (TAGs). An in-depth knowledge of the mixing behavior of TAGs is necessary for the rational design and engineering of food materials. The binary phase diagram of TAGs is a simplified model that can be explored to help foster an understanding of the phase behavior of complex fats and oils. This article reviews recent research on the binary phase behavior of saturated-unsaturated mixed-acid TAGs, with special emphasis on the stearic-unsaturated and palmitic-unsaturated diacid TAGs...
May 15, 2018: Journal of Oleo Science
Rauzah Hashim, N Idayu Zahid, T S Velayutham, Nurul Fadhilah Kamalul Aripin, Shigesaburo Ogawa, Akihiko Sugimura
Also recognized as carbohydrate liquid crystals, glycolipids are amphiphiles whose basic unit comprises of a sugar group attached to an alkyl chain. Glycolipids are amphitropic, which means these materials form liquid crystal self-assemblies when dry (thermotropic) as well as when dissolved in solvents (lyotropic/surfactants) such as water. Many glycolipids are also naturally derived since these can be found in cell membranes. Their membrane and surfactant functions are largely understood through their lyotropic properties...
May 15, 2018: Journal of Oleo Science
Phumon Sookwong, Sugunya Mahatheeranont
Rice bran contains a great amount of functional lipids and phytochemicals including γ-oryzanols, tocotrienols, and tocopherols. However, utilization of those compounds is limited and needs some proven guidelines for better implementation. We introduce some effective strategies for the utilization of rice functional lipids, including an introduction of pigmented rice varieties for better bioactive compounds, biofortification of rice tocotrienols, plasma technology for improving rice phytochemicals, supercritical CO2 extraction of high quality rice bran oil, and an example on the development of tocotrienol-fortified foods...
May 15, 2018: Journal of Oleo Science
Mingli Hu, Mei Bai, Wei Ye, Yaling Wang, Hong Wu
Dried flower buds of Magnolia biondii Pamp. are the main ingredient in "Xin-yi" in China, and the volatile oils of M. biondii flower buds are the principal medicinal component. Gas chromatographymass spectrometry (GC-MS) and microscopic techniques were employed to detect the volatile yields of M. biondii flowers at various growth stages. The volatile oil yields of M. biondii flowers differed significantly at different growth stages and were closely related to flower dry weight, oil cell density and degree of oil accumulation...
May 15, 2018: Journal of Oleo Science
Anilda Guri, İbrahim Gülseren, Elena Arranz, Milena Corredig
To enhance the curcumin delivery in a variety of food grade matrices namely spray dried ethanolic curcumin in fresh skim milk (Spray dried Cu-SM), a fresh mixture of ethanolic curcumin and skim milk (Fresh Cu-SM) a powder mixture of curcumin and skim milk powder (Powder Cu-SMP) and oil in water emulsion (Emulsion) were studied. The cellular uptake of curcumin from the respective matrices was studied on Caco-2 cell monolayers. Spray dried Cu-SM showed higher encapsulation efficiency compared to a corresponding Powder Cu-SMP and an oil-in-water emulsion (40% oil) bearing curcumin...
May 15, 2018: Journal of Oleo Science
Omar Zaliha, Hishamuddin Elina, Kanagaratnam Sivaruby, Abd Rashid Norizzah, Alejandro G Marangoni
The in situ polymorphic forms and thermal transitions of refined, bleached and deodorized palm oil (RBDPO), palm stearin (RBDPS) and palm kernel oil (RBDPKO) were investigated using coupled X-ray diffraction (XRD) and differential scanning calorimetry (DSC). Results indicated that the DSC onset crystallisation temperature of RBDPO was at 22.6°C, with a single reflection at 4.2Å started to appear from 23.4 to 17.1°C, and were followed by two prominent exothermic peaks at 20.1°C and 8.5°C respectively. Further cooling to -40°C leads to the further formation of a β'polymorph...
May 15, 2018: Journal of Oleo Science
Ananda Kafle, Takeshi Misono, Avinash Bhadani, Masaaki Akamatsu, Kenichi Sakai, Chihiro Kaise, Teruhisa Kaneko, Hideki Sakai
We investigated the hydration behavior of dipalmitoylphosphatidylcholine (DPPC) bilayers containing sodium β-sitosteryl sulfate (PSO4 ). PSO4 was found to enhance hydration in the headgroup region of DPPC bilayers. Therefore, with the incorporation of PSO4 into DPPC membranes, the amount of water required to reach the fully hydrated state was enhanced as indicated by the constant values of the main phase transition temperature (Tm ) and the bilayer repeat distance (d). For example, with the addition of 20 mol% of PSO4 , the saturation point was shifted to ~70 wt% water compared to ~40 wt% for pure DPPC and 47 wt% for DPPC-cholesterol...
May 15, 2018: Journal of Oleo Science
Chie Miyamoto, Hirona Kugo, Keisuke Hashimoto, Ayaka Sawaragi, Nobuhiro Zaima, Tatsuya Moriyama
Abdominal aortic aneurysm (AAA) is a vascular disease that results in rupture of the abdominal aorta. The risk factors for the development of AAA include smoking, male sex, hypertension, and age. AAA has a high mortality rate, but therapy for AAA is restricted to surgery in cases of large aneurysms. Clarifying the effect of dietary food on the development of AAA would be helpful for patients with AAAs. However, the relationship between dietary habits and the development of AAA is largely unknown. In our previous study, we demonstrated that adipocytes in vascular wall can induce the rupture of AAA...
April 9, 2018: Journal of Oleo Science
Ju Hyun Kim, Hyeon Jeong Lee, Kisung Kwon, Hyang Sook Chun, Sangdoo Ahn, Byung Hee Kim
The aim of this study was to discriminate the authenticity of perilla oils distributed in Korea using their1 H nuclear magnetic resonance (NMR) spectra acquired by a 43 MHz low-field benchtop NMR spectrometer. Significant differences existed in the integration values of all 6 peaks found in the spectrum between authentic and adulterated perilla oil samples. The integration values of 4 peaks that signify the methylene protons present in all fatty acids (FA) and allylic or olefinic protons present in all unsaturated FA were the best variables for establishing perilla oil authenticity...
April 9, 2018: Journal of Oleo Science
Shigesaburo Ogawa, Isao Takahashi, Maito Koga, Kouichi Asakura, Shuichi Osanai
Cryogenic treatment, like the freeze-thaw process, has been reported to be effective in modifying the physicochemical properties of polymeric hydrogels. However, not much attention has been paid to this process in terms of the precipitation of surfactant-water systems. In this study, two effective cryogenic methodologies were successfully reported to alter the physicochemical properties of a precipitate of an octyl β-D-galactoside (Oct-Gal)-water system. First, hyperrapid cooling (i.e., cooling at 30°C/min) was found to be an effective type of cryogenic treatment: the phase transition temperature (TK ) and enthalpy at the phase transition (∆HK ) between the crystal-dispersed phase and the sol (micelle) phase significantly decreased...
April 9, 2018: Journal of Oleo Science
Qiuyun Zhang, Hu Li, Song Yang
Mesoporous Ti-Mo bi-metal oxides with various titanium-molybdenum ratios were successfully fabricated via a facile approach by using stearic acid as a low-cost template agent. thermal gravity (TG) /differential scanning calorimetry (DSC) analysis, X-ray diffraction (XRD), Fourier transform infrared (FT-IR) spectroscopy, nitrogen adsorption-desorption isotherm, NH3 temperature-programmed desorption (NH3 -TPD), scanning electron microscopy (SEM) and transmission electron microscopy (TEM) measurements indicated these materials possessing mesoporous structure, sufficient pore size and high acid intensity...
April 9, 2018: Journal of Oleo Science
Lan Ngoc Pham, Boi Van Luu, Hung Duong Phuoc, Hanh Ngoc Thi Le, Hoa Thi Truong, Phuong Duc Luu, Masakazu Furuta, Kiyoshi Imamura, Yasuaki Maeda
Candlenut oil (CNO) is a potentially new feedstock for biodiesel (BDF) production. In this paper, a two-step co-solvent method for BDF production from CNO was examined. Firstly, esterification of free fatty acids (FFAs) (7 wt%) present in CNO was carried out using a co-solvent of acetonitrile (30 wt%) and H2 SO4 as a catalyst. The content of FFAs was reduced to 0.8 wt% in 1 h at 65°C. Subsequent transesterification of the crude oil produced was carried out using a co-solvent of acetone (20 wt%) and 1 wt% potassium hydroxide (KOH)...
April 9, 2018: Journal of Oleo Science
Wei Liu, Guanghui Lu
Carbonated methyl soyates have been successfully prepared by cycloaddition of carbon dioxide (CO2 ) to epoxidized methyl soyates in tetrabutylammonium bromide (TBAB)-based deep eutectic solvents (DES). Experimental parameters, i.e., reaction temperature, reaction time, CO2 pressure and TBAB concentration were evaluated. The different reaction conditions have a significant influence on the yields of carbonated methyl soyates. The use of TBAB-based DES (tetrabutylammonium bromide/triethylene glycol) significantly shortened the reaction time of the cycloaddition of CO2 to epoxidized methyl soyates...
April 9, 2018: Journal of Oleo Science
Yutaka Takahashi, Hiroka Shirahata, Taishi Nishimura, Masaki Murai, Kazuaki Wakita, Yukishige Kondo
Amphiphilic random copolymers, poly(oxyethylene)/poly(oxypropylene) butyl ethers (C4EmPn), have been used as raw materials for cosmetics. This paper reports on the influence of amphiphilic random copolymers on mixtures of n-decane, water, and a nonionic surfactant, hexa(oxyethylene) dodecyl ether (C12E6). Bicontinuous phases are formed from decane/water/C12E6 mixtures at high C12E6 weight fractions (> 70 wt%). Adding C4EmPn to decane/water/C12E6 mixtures brings about the formation of bicontinuous phases and a decrease in the amount of the surfactant required for their formation, indicating efficiency boosting...
April 9, 2018: Journal of Oleo Science
Khu Say Li, M Abbas Ali, Ida Idayu Muhammad, Noor Hidayu Othman, Ahmadilfitri Md Noor
The impact of microwave roasting on the thermooxidative degradation of perah seed oil (PSO) was evaluated during heating at a frying temperature (170°C). The roasting resulted significantly lower increment of the values of oxidative indices such as free acidity, peroxide value, p-anisidine, total oxidation (TOTOX), specific extinctions and thiobarbituric acid in oils during heating. The colour L* (lightness) value dropped gradually as the heating time increased up to 12 h, whereas a*(redness) and b* (yellowness) tended to increase...
April 9, 2018: Journal of Oleo Science
Ludwi Rodríguez-Hernandez, Humberto Nájera-Gomez, Celína Luján-Hidalgo, Nancy Ruiz-Lau, Carlos Alberto Lecona-Guzmán, Miguel Abud-Archila, Víctor Manuel Ruíz-Valdiviezo, Federico Antonio Gutiérrez-Miceli
Olive trees are one of the most important oil crops in the world due to the sensorial and nutritional characteristics of olive oil, such as lipid composition and antioxidant content, and the medicinal properties of its leaves. In this paper, callus formation was induced using nodal segments of olive tree (Olea europaea cv cornicabra) as explants. Fatty acid profile, total phenolic compounds and total flavonoid compounds were determined in callus culture after 15 weeks and compared with leaf and nodal segments tissues...
April 9, 2018: Journal of Oleo Science
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