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Journal of Oleo Science

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https://www.readbyqxmd.com/read/28190809/electrocapillary-phenomena-at-edible-oil-saline-interfaces
#1
Satoshi Nishimura, Takuya Ohzono, Kohei Shoji, Shin Yagihara, Masafumi Hayashi, Hisao Tanaka
Interfacial tension between edible oil and saline was measured under applied electric fields to understand the electrocapillary phenomena at the edible oil/saline interfaces. The electric responses of saline droplets in edible oil were also observed microscopically to examine the relationship between the electrocapillary phenomena and interfacial polarization. When sodium oleate (SO) was added to edible oil (SO-oil), the interfacial tension between SO-oil and saline decreased. However, no decrease was observed for additive-free oil or oleic acid (OA)-added oil (OA-oil)...
February 10, 2017: Journal of Oleo Science
https://www.readbyqxmd.com/read/28190808/quantification-of-triacylglycerol-molecular-species-in-edible-fats-and-oils-by-gas-chromatographyflame-ionization-detector-using-correction-factors
#2
Kazuaki Yoshinaga, Junji Obi, Toshiharu Nagai, Hiroyuki Iioka, Akihiko Yoshida, Fumiaki Beppu, Naohiro Gotoh
In the present study, the resolution parameters and correction factors (CFs) of triacylglycerol (TAG) standards were estimated by gas chromatography-flame ionization detector (GC-FID) to achieve the precise quantification of the TAG composition in edible fats and oils. Forty seven TAG standards comprising capric acid, lauric acid, myristic acid, pentadecanoic acid, palmitic acid, palmitoleic acid, stearic acid, oleic acid, linoleic acid, and/or linolenic acid were analyzed, and the CFs of these TAGs were obtained against tripentadecanoyl glycerol as the internal standard...
February 10, 2017: Journal of Oleo Science
https://www.readbyqxmd.com/read/28190807/poly-styrene-co-acrylonitrile-particles-prepared-by-phase-inversion-of-w-o-emulsions
#3
Shuji Ichikawa, Yoshiro Imura, Takeshi Kawai
In this paper, we describe a particle preparation method that combines phase inversion of water in oil (W/O) emulsions with solidification of polymers dissolved in the emulsion droplets, induced by introducing a poor solvent, in order to prepare poly(styrene-co-acrylonitrile) (SAN) particles with a relatively narrow size distribution. W/O emulsions containing SAN are prepared by adding an aqueous solution of polyvinylalcohol (PVA) as a protective colloid into a methylethylketone (MEK) solution of SAN. Sufficient addition of the aqueous solution causes the precipitation of SAN particles from MEK followed by phase inversion from W/O emulsions to oil in water (O/W) emulsions...
February 10, 2017: Journal of Oleo Science
https://www.readbyqxmd.com/read/28190806/optimization-of-the-enzymatic-synthesis-of-biodiesel-from-terminalia-cattapa-l-kernel-oil-using-response-surface-methodology
#4
Dedy Suhendra, Erin Ryantin Gunawan, Arista Dewi Nurita, Desy Komalasari, Teguh Ardianto
The synthesis of biodiesel using Terminalia cattapa L. (local language: Ketapang) kernel oil and ethanol has been conducted. The effect of variable parameters of synthesis includes reaction time (3-7 h), temperature (35-60°C), amount of enzyme (0.1-0.3 g) and substrate molar ratio (ketapang kernel oil to ethanol, 1:1-1:3) were studied. Response surface methodology based on a five-level and four-variable central composite rotatable design were used to evaluate the interactive effects of the sinthesis parameters on the percentage yield of biodiedsel...
February 10, 2017: Journal of Oleo Science
https://www.readbyqxmd.com/read/28190805/mass-spectrometric-discrimination-of-squalene-monohydroperoxide-isomers
#5
Naoki Shimizu, Hannah Bersabe, Junya Ito, Shunji Kato, Ryo Towada, Takahiro Eitsuka, Shigefumi Kuwahara, Teruo Miyazawa, Kiyotaka Nakagawa
Squalene (SQ), a main component of human sebum, is readily photooxidized by exposure to sunlight, producing six squalene monohydroperoxide (SQ-OOH) isomers. Despite its known connection to various skin conditions, few studies have sought to analyze SQ-OOH at the isomeric level. In this study, we aimed to develop a method to discriminate each SQ-OOH isomer with the use of tandem mass spectrometry (MS/MS). The six standard SQ-OOH isomers were prepared by photooxidizing SQ in the presence of rose bengal, a photosensitizer, and isolated by semipreparative high-performance liquid chromatography (HPLC)...
February 10, 2017: Journal of Oleo Science
https://www.readbyqxmd.com/read/28190804/investigating-the-distribution-of-stable-paramagnetic-species-in-an-apple-seed-using-x-band-epr-and-epr-imaging
#6
Kouichi Nakagawa, Boris Epel
This study investigated the location and distribution of paramagnetic species in apple seeds using electron paramagnetic resonance (EPR) and X-band (9 GHz) EPR imaging (EPRI). EPR primarily detected two paramagnetic species per measured seed. These two different radical species were assigned as stable radicals and Mn(2+) species based on the g values and hyperfine components. The signal from the stable radical was noted at g ≈ 2.00 and was strong and relatively stable. The subsequent noninvasive EPRI of the radical present in each seed revealed that the stable radicals were located primarily in the seed coat, with very few radicals observed in the cotyledon of the seed...
February 10, 2017: Journal of Oleo Science
https://www.readbyqxmd.com/read/28190803/characterization-of-a-novel-rhamnose-containing-acidic-glycosphingolipid-from-the-ascidian-halocynthia-aurantium
#7
Hisao Kojima, Ryota Shinohara, Saki Itonori, Masahiro Ito
Halocynthia aurantium, an edible ascidian species belonging to Urochordata, was subjected to structural characterization of acidic glycosphingolipids to investigate these molecules in ascidians: sulfatide from Ciona intestinalis and the glucuronic acid-containing acidic glycosphingolipid from H. roretzi. Acidic glycosphingolipids containing three or five sugars were isolated from soft parts of the ascidian H. aurantium by chloroform-methanol extraction, mild-alkaline hydrolysis, precipitation with cold acetone, and subsequent column chromatography using a DEAE-Sephadex A-25 column, a Florisil column, and an Iatrobead column...
February 10, 2017: Journal of Oleo Science
https://www.readbyqxmd.com/read/28190802/alternate-spray-coating-for-the-direct-fabrication-of-hydroxyapatite-films-without-crystal-growth-step-in-solution
#8
Satoshi Watanabe, Rei Kashiwagi, Mutsuyoshi Matsumoto
We discuss an alternate spray-coating technique for the direct fabrication of hydroxyapatite films using metal masks, suction-type spray nozzles and two calcification solutions of calcium hydroxide and phosphoric acid aqueous solutions. Hydroxyapatite films were formed only on the hydrophobic surface of the substrates. Scanning electron microscopy and energy dispersive X-ray spectroscopy showed that the spray-coated films consisted of hydroxyapatite nanoparticles. The Ca/P ratio was estimated to be about 1...
February 10, 2017: Journal of Oleo Science
https://www.readbyqxmd.com/read/28190801/acaricidal-potentials-of-the-terpene-rich-essential-oils-of-two-iranian-eucalyptus-species-against-tetranychus-urticae-koch
#9
Asgar Ebadollahi, Jalal Jalali Sendi, Mostafa Maroufpoor, Mehdi Rahimi-Nasrabadi
There is a rapid growth in the screening of plant materials for finding new bio-pesticides. In the present study, the essential oils of E. oleosa and E. torquata leaves were extracted using a Clevenger apparatus and their chemical profiles were investigated by Gas Chromatography-Mass Spectrometry (GC-MS). Among identified compounds, the terpenes had highest amount for both essential oils; 93.59% for E. oleosa and 97.69% for E. torquata. 1,8-Cineole (31.96%), α-pinene (15.25%) and trans-anethole (7.32%) in the essential oil of E...
February 10, 2017: Journal of Oleo Science
https://www.readbyqxmd.com/read/28100887/production-of-a-health-beneficial-food-emulsifier-by-enzymatic-partial-hydrolysis-of-phospholipids-obtained-from-the-head-of-autumn-chum-salmon
#10
A K M Azad Shah, Toshihiro Nagao, Hideyuki Kurihara, Koretaro Takahashi
Phospholipids and their partial hydrolysates, namely lysophospholipids (LPLs), have been widely used in food, pharmaceutical, and cosmetic products as highly efficient emulsifiers. This study was conducted to produce docosahexaenoic acid (DHA)-esterified LPLs by enzymatic modification of phospholipids obtained from the head of autumn chum salmon (Oncorhynchus keta). The emulsifying properties of the obtained LPLs were also evaluated. Two different types of substrates of salmon head phospholipids were prepared via silica gel and cold acetone precipitation...
January 18, 2017: Journal of Oleo Science
https://www.readbyqxmd.com/read/28100886/characterization-of-volatile-compounds-with-hs-spme-from-oxidized-n-3-pufa-rich-oils-via-rancimat-tests
#11
Kai-Min Yang, Ming-Ching Cheng, Chih-Wei Chen, Chin-Yin Tseng, Li-Yun Lin, Po-Yuan Chiang
Algae oil and fish oil are n-3 PUFA mainstream commercial products. The various sources for the stability of n-3 PUFA oxidation are influenced by the fatty acid composition, extraction and refined processing. In this study, the oil stability index (OSI) occurs within 2.3 to 7.6 hours with three different n-3 PUFA rich oil. To set the OSI in the Rancimat test as the oil stability limit and observed various degrees of oxidation (0, 25, 50, 75, 100 and 125%). The volatile oxidation compounds were analyzed via headspace-solid phase microextraction (HS-SPME) and GC/MS...
January 18, 2017: Journal of Oleo Science
https://www.readbyqxmd.com/read/28100885/quantitative-analysis-of-the-distribution-of-cis-eicosenoic-acid-positional-isomers-in-marine-fishes-from-the-indian-ocean
#12
Samanthika Senarath, Kazuaki Yoshinaga, Toshiharu Nagai, Akihiko Yoshida, Fumiaki Beppu, Chamila Jayasinghe, Chandravathany Devadawson, Naohiro Gotoh
This study investigated the occurrence and distribution of cis-eicosenoic acid (c-20:1) positional isomers in fishes from the Indian Ocean and compared to those from the Pacific and Atlantic Ocean. Lipids were extracted from the edible part of the fish and then methylated. The eicosenoic acid methyl ester fraction was separated from total fatty acid methyl esters by reversed-phase HPLC and quantitatively analyzed using a GC-FID fitted with the SLB-IL111 highly polar GC column. c14-20:1 was used as an internal standard...
January 18, 2017: Journal of Oleo Science
https://www.readbyqxmd.com/read/28100884/stabilization-of-neem-oil-biodiesel-with-corn-silk-extract-during-long-term-storage
#13
Rehab Farouk M Ali, Ayman M El-Anany
The current study aimed to evaluate the antioxidant efficiency of different extracts of corn silk. In addition, the impact of corn silk extract on oxidative stability of neem biodiesel during storage was studied. The highest phenolics, DPPH radical scavenging and reducing power activities were recorded for methanol-water extract. The longest oxidation stability (10 h) was observed for biodiesel samples blended with 1000 ppm of corn silk extract (CSE). At the end of storage period the induction time of biodiesel samples mixed with 1000 ppm of CSE or butylated hydroxytoluene (BHT) were about 6...
January 18, 2017: Journal of Oleo Science
https://www.readbyqxmd.com/read/28100883/soy-protein-isolate-suppresses-lipodystrophy-induced-hepatic-lipid-accumulation-in-model-mice
#14
Koji Nagao, Akiko Matsumoto, Shunichi Kai, Tomoko Kayashima, Teruyoshi Yanagita
Lipodystrophies are acquired and genetic disorders characterized by the complete or partial absence of body fat with a line of metabolic disorders, including hepatic steatosis. Because soy protein isolate (SPI) has been reported to reduce cholesterol and triglyceride levels in animals and humans, we explored the effect of SPI on the pathophysiology of hepatic lipid accumutaion in a diet-induced lipodystrophy model mice. Four weeks of the lipodystrophy model diet induced hepatic lipid accumulation concomitant with marked deficiencies of adipose tissue and serum adipocytokines in mice...
January 18, 2017: Journal of Oleo Science
https://www.readbyqxmd.com/read/28100882/efficient-fractionation-and-analysis-of-fatty-acids-and-their-salts-in-fat-oil-and-grease-fog-deposits
#15
Herman P Benecke, Sara K Allen, Daniel B Garbark
A fractionation methodology of fat, oil and grease (FOG) deposits was developed based on the insolubility of fatty acid salts in dichloromethane (DCM) and the relatively high solubility of fatty acids and triglycerides in DCM. Using this method, coupled with spectral analysis, it was shown that fatty acids rather than fatty acid salts were the predominant species in FOG deposits obtained from three metropolitan locations in the United States and that fatty acid triglycerides were either not detected or were present in very small concentrations...
January 18, 2017: Journal of Oleo Science
https://www.readbyqxmd.com/read/28090036/fabrication-and-functionalization-of-inorganic-materials-using-amphiphilic-molecules
#16
Hirobumi Shibata
In this review, the synthesis of inorganic materials with various properties using amphiphilic molecules is examined. Amphiphilic molecules are used for the formation of highly ordered mesostructures and the surface modification. Two examples of the mesostructures are crystalline mesoporous titania (TiO2) and the novel visible light responsive mesostuructured titania modified with dye in the pores, which can be fabricated using the molecular self-assemblies of amphiphiles as templates. Surface modification using amphiphilic molecules enables the construction of self-assembled arrays of silica particles and the preparation of a film that can control adsorption/desorption behavior of bovine serum albumin (BSA) by light irradiation...
January 16, 2017: Journal of Oleo Science
https://www.readbyqxmd.com/read/27928143/degradation-of-distillery-lees-shochu-kasu-by-cellulase-producing-thraustochytrids
#17
Yousuke Taoka, Naoki Nagano, Hiroyuki Kai, Masahiro Hayashi
Single cell oils produced by oleaginous microorganisms have attracted increasing interests as a petroleum alternative energy. Marine eukaryotes, thraustochytrids were heterotrophic, and can grow rapidly and accumulate large amount of lipids containing functional fatty acids, such as docosahexaenoic acid (DHA) in their cells body. In this investigation, thraustochytrids isolated from marine environment were cultured in the medium containing an industrial waste and an unused resource, distillery lees (Shochu kasu) to produce biofuel or functional fatty acids by microorganisms...
December 8, 2016: Journal of Oleo Science
https://www.readbyqxmd.com/read/27928142/utilization-of-the-fine-particles-obtained-from-cold-pressed-vegetable-oils-a-case-study-in-organic-rice-bran-sunflower-and-sesame-oils
#18
Khongsak Srikaeo, Phuttan Poungsampao, Nguyen Thi Phuong
Fine particles obtained from the physical refining of organic cold pressed vegetable oils which are normally discarded as a process waste can be utilized as cosmetic and food ingredients. This paper demonstrated the use of the fine particles from rice bran (Thai Jasmine and Riceberry varieties), sunflower and sesame oils as the ingredient in body mask and as dietary fiber. It was found that the fine particles from rice brans exhibited better antioxidant properties than those of sunflower and sesame. The mixed fine particles were added to body mask formula...
December 8, 2016: Journal of Oleo Science
https://www.readbyqxmd.com/read/27928141/effects-of-aerobic-growth-on-the-fatty-acid-and-hydrocarbon-compositions-of-geobacter-bemidjiensis-bem-t
#19
Akio Ueno, Satoru Shimizu, Mikako Hashimoto, Takumi Adachi, Takako Matsushita, Hidetoshi Okuyama, Kiyohito Yoshida
Geobacter spp., regarded as strict anaerobes, have been reported to grow under aerobic conditions. To elucidate the role of fatty acids in aerobiosis of Geobacter spp., we studied the effect of aerobiosis on fatty acid composition and turnover in G. bemidjiensis Bem(T). G. bemidjiensis Bem(T) was grown under the following different culture conditions: anaerobic culture for 4 days (type 1) and type 1 culture followed by 2-day anaerobic (type 2) or aerobic culture (anaerobic-to-aerobic shift; type 3). The mean cell weight of the type 3 culture was approximately 2...
December 8, 2016: Journal of Oleo Science
https://www.readbyqxmd.com/read/27928140/reaction-and-scavenging-mechanism-of-%C3%AE-carotene-and-zeaxanthin-with-reactive-oxygen-species
#20
Azusa Nishino, Hiroyuki Yasui, Takashi Maoka
In order to investigate chemical scavenging mechanism of singlet oxygen, superoxide anion radical, and hydroxyl radical by carotenoids, reaction products obtained by reacting β-carotene or zeaxanthin with singlet oxygen, superoxide anion radical, and hydroxyl radical were analyzed by LC/PDA ESI-MS, and ESR spectrometry. β-Carotene endoperoxides were identified as the major reaction products of β-carotene and singlet oxygen, while β-carotene epoxides were the major reaction products of β-carotene and superoxide anion or hydroxyl radical...
December 8, 2016: Journal of Oleo Science
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