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Journal of Oleo Science

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https://www.readbyqxmd.com/read/28413193/effect-of-dietary-purified-xanthohumol-from-hop-humulus-lupulus-l-pomace-on-adipose-tissue-mass-fasting-blood-glucose-level-and-lipid-metabolism-in-kk-ay-mice
#1
Koki Takahashi, Kyoichi Osada
We previously showed that xanthohumol-rich hop extract (XRHE, ~18% xanthohumol) exerts anti-obesity effects in rats fed a high-fat diet through regulation of fatty acid metabolism. In this study, we examined the effects of dietary purified xanthohumol from XRHE (PX, ~91.9% xanthohumol) in KK-Ay mice in order to understand the anti-obesity effects of xanthohumol alone because XRHE contains 82% unknown compounds. Dietary consumption of PX significantly inhibited an increase in the visceral fat weight of mice compared to those fed control diet without PX...
April 13, 2017: Journal of Oleo Science
https://www.readbyqxmd.com/read/28413192/secondary-structural-changes-of-intact-and-disulfide-bridges-cleaved-human-serum-albumins-in-thermal-denaturation-up-to-130%C3%A2-c-additive-effects-of-sodium-dodecyl-sulfate-on-the-changes
#2
Yoshiko Moriyama, Kunio Takeda
The secondary structural changes of human serum albumin with the intact 17 disulfide bridges (HSA) and the disulfide bridges-cleaved human serum albumin (RCM-HSA) in thermal denaturation were examined. Most of the helical structures of HSA, whose original helicity was 66%, were sharply disrupted between 50 and 100°C. However, 14% helicity remained even at 130°C. The temperature dependence of the degree of disrupted helical structures of HSA was discussed in connection with questions about a general protein denaturation model...
April 13, 2017: Journal of Oleo Science
https://www.readbyqxmd.com/read/28413191/length-scale-specific-crystalline-structural-changes-induced-by-molecular-randomization-of-pequi-oil
#3
Andréa Madalena Maciel Guedes, Rosemar Antoniassi, Melicia Cintia Galdeano, Renato Grimaldi, Mario Geraldo de Carvalho, Allan Eduardo Wilhelm, Alejandro Gregorio Marangoni
Pequi fruit (Caryocar brasiliense Camb) is considered important since its pulp has a high content of oil and carotenoids. The oil's triacylglycerols (TAGs) contain mainly oleic (~57%) and palmitic (~36%) fatty acids, distributed primarily among POO, POP/PPO, and OOO TAGs. It displays a tendency to fractionate upon storage and has a relatively low melting temperature (SFC of 4% at 25°C). Pequi oil was modified through chemical interesterification, which increased the PPP content to ~6%. This caused a flattening in the SFC-temperature profile, raising the end of melt temperature significantly (SFC of 4% at 39°C)...
April 13, 2017: Journal of Oleo Science
https://www.readbyqxmd.com/read/28413190/virgin-olive-oil-enriched-with-lutein-zeaxanthin-from-spinacia-oleracea
#4
María Benito de Valle-Prieto, Jonathan Delgado-Adámez, Ma Victoria Gil, Sara Martillanes, Ma Nieves Franco, Daniel Martín-Vertedor
The aim of this work consists of developing a technological process for elaborating a virgin olive oil enriched in lutein-zeaxanthin extracted from spinach, studying different parameters like temperature, time of extraction and different ratios (spinach-oil). It was observed that the amount of carotenoids extracted increased up to a maximum after 24 hours and decreased as the maceration time progressed up to 60 hours, resulting of biological degradation. It was also observed that as more spinach we added, as more lutein-zeaxanthin in the enriched virgin olive oil was obtained...
April 13, 2017: Journal of Oleo Science
https://www.readbyqxmd.com/read/28381776/pathological-analysis-of-the-ruptured-vascular-wall-of-hypoperfusion-induced-abdominal-aortic-aneurysm-animal-model
#5
Hirona Kugo, Nobuhiro Zaima, Hiroki Tanaka, Keisuke Hashimoto, Chie Miyamoto, Ayaka Sawaragi, Tetsumei Urano, Naoki Unno, Tatsuya Moriyama
Abdominal aortic aneurysm (AAA) is a vascular disease that results in the gradual dilation of the abdominal aorta and has a high rupture-related mortality rate. However, the mechanism of AAA rupture remains unknown. In our previous study, we established a novel AAA animal model (hypoperfusion-induced AAA rat model) with spontaneous AAA rupture. Using the hypoperfusion-induced AAA rat model, we demonstrated that the abnormal appearance of adipocytes in the vascular wall is associated with AAA rupture. However, pathological analysis of the rupture area has not been performed because it is particularly difficult to identify the rupture point...
April 4, 2017: Journal of Oleo Science
https://www.readbyqxmd.com/read/28381775/fatty-acid-esterification-with-polyols-over-acidic-montmorillonite
#6
Asma Chaari, Soumaya Bouguerra Neji, Mouhamed Hedi Frikha
The production of fatty acid esters from stearic, oleic, and palmitic acids and polyols (ethylene glycol and glycerol) was investigated in this work. A series of montmorillonite-based clays catalysts (KSF, KSF/0, KP10, and K10), having different physicochemical properties, were used as acidic catalysts. The influence of the specific surface area and the acidity of the catalysts on the esterification rate were explored. The best catalytic activities were obtained with KSF catalyst. The optimization of various factors on the reaction was also studied, including catalyst concentration, reaction temperature and molar ratio (polyol /fatty acid)...
April 4, 2017: Journal of Oleo Science
https://www.readbyqxmd.com/read/28381774/interfacial-properties-of-binary-systems-composed-of-dppc-and-perfluorinated-double-long-chain-salts-with-divalent-counterions-of-separate-electric-charge
#7
Riku Kato, Hiromichi Nakahara, Osamu Shibata
The interfacial behavior of binary monolayers of 1,1'-(1,ω-alkanediyl)-bispyridinium perfluorotetradecanecarboxylate (CnBP(FC14)2, n = 2, 6, or 10) and dipalmitoylphosphatidylcholine (DPPC) was studied using surface pressure (π)-area (A) and surface potential (ΔV)-A isotherm measurements and morphological observations. In a previous study, we showed that the spacer moieties of C2BP(FC14)2 and C6BP(FC14)2 are completely dissociated after spreading on 0.15 M NaCl, whereas the C10BP(FC14)2 spacer moieties do not dissociate in the monolayer state...
April 4, 2017: Journal of Oleo Science
https://www.readbyqxmd.com/read/28381773/a-novel-chemical-enhancer-approach-for-transdermal-drug-delivery-with-c17-monoglycerol-ester-liquid-crystal-forming-lipid
#8
Wesam R Kadhum, Shohei Sekiguchi, Ichiro Hijikuro, Hiroaki Todo, Kenji Sugibayashi
Transdermal administration of drugs represents an excellent alternative to conventional pharmaceutical dosage forms. However, insufficient penetration of the active pharmaceutical substance through the skin is a common problem. Thus, in the present study we evaluated the skin permeation enhancing ability of liquid crystal (LC) topical formulations. A recently developed LC-forming lipid, C17-monoglycerol ester (MGE), was evaluated and compared with glycerol monoolate (GMO), which is considered as the gold standard for LC formulations...
April 4, 2017: Journal of Oleo Science
https://www.readbyqxmd.com/read/28381772/inhibition-of-%C3%AE-secretase-activity-by-monoterpenes-sesquiterpenes-and-c13-norisoprenoids
#9
Shinsuke Marumoto, Yoshiharu Okuno, Mitsuo Miyazawa
Inhibition of β-secretase (BACE1) is currently regarded as the leading treatment strategy for Alzheimer's disease. In the present study, we aimed to screen the in vitro inhibitory activity of 80 types of aroma compounds (monoterpenes, sesquiterpenes, and C13 norisoprenoids), including plant-based types, at a 200-μM concentration against a recombinant human BACE1. The results showed that the most potent inhibitor of BACE1 was geranyl acetone followed by (+)-camphor, (-)-fenchone, (+)-fenchone, and (-)-camphor with the half-maximal inhibitory concentration (IC50) values of 51...
April 4, 2017: Journal of Oleo Science
https://www.readbyqxmd.com/read/28381771/oil-characteristics-of-four-palestinian-olive-varieties
#10
Enrico Maria Lodolini, Serena Polverigiani, Saed Ali, Mohammed Mutawea, Mayyada Qutub, Taysir Arabasi, Fabio Pierini, Mohammed Abed, Davide Neri
Olive oil represents an important source of income for Palestinian farmers in local, national and international markets. Sometimes, olive oil produced in local climatic conditions, does not achieve the International Olive Council (IOC) trade standards so that international markets are precluded. The oil chemical composition and sensory profile of four Palestinian olive varieties (Nabali Baladi, Nabali Mohassan, Souri and K18) were characterized in 2010 throughout an in situ evaluation. Most of the physic-chemical characteristics and the fatty acid composition of the varieties met the International Olive Council trade standards (IOC-TS) for extra virgin olive oils...
April 4, 2017: Journal of Oleo Science
https://www.readbyqxmd.com/read/28381770/a-new-strategy-to-refine-crude-indian-sardine-oil
#11
S Charanyaa, Prasanna D Belur, I Regupathi
Current work aims to develop a refining process for removing phospholipids, free fatty acids (FFA), and metal ions without affecting n-3 polyunsaturated fatty acid (n-3 PUFA) esters present in the crude Indian sardine oil. Sardine oil was subjected to degumming with various acids (orthophosphoric acid, acetic acid, and lactic acid), conventional and membrane assisted deacidification using various solvents (methanol, ethanol, propanol and butanol) and bleaching with bleaching agents (GAC, activated earth and bentonite) and all the process parameters were further optimized...
April 4, 2017: Journal of Oleo Science
https://www.readbyqxmd.com/read/28381769/a-review-of-anti-inflammatory-terpenoids-from-the-incense-gum-resins-frankincense-and-myrrh
#12
Toshio Morikawa, Hisashi Matsuda, Masayuki Yoshikawa
Frankincense and myrrh have been used as incense in religious and cultural ceremonies since the beginning of written history. Their common medicinal properties are used in the treatment for inflammatory conditions, some cancerous diseases, and wound healing. In the course of our characterization of the anti-inflammatory constituents from frankincense and myrrh, several terpenoid constituents were found to inhibit nitric oxide production in lipopolysaccharide-activated mouse peritoneal macrophages. Here we review the structure of those terpenoid constituents from the gum resins of frankincense and myrrh and evaluate their anti-inflammatory effects by their nitric oxide production inhibitory activity...
April 4, 2017: Journal of Oleo Science
https://www.readbyqxmd.com/read/28381768/tandem-brook-rearrangement-silicon-polonovski-reaction-via-oxidative-generation-of-ammonium-ylides
#13
Hiromasa Shibuya, Takahiro Nakago, Seiichi Inoue, Yujiro Hoshino, Kiyoshi Honda
A tandem Brook rearrangement/silicon Polonovski reaction has been achieved by in situ generation of ammonium ylides via the oxidation of α-silyl-tertiary amines. Furthermore, we found that the oxidation of N-(1-cyano-1-silyl)methyl-tertiary amines with peracids induced the tandem Brook rearrangement/silicon Polonovski reaction/fragmentation to give formamide derivatives in moderate yields.
April 4, 2017: Journal of Oleo Science
https://www.readbyqxmd.com/read/28381767/volatile-components-of-the-essential-oil-of-artemisia-montana-and-their-sedative-effects
#14
Kento Kunihiro, Takao Myoda, Noriaki Tajima, Kotaro Gotoh, Tai Kaneshima, Takao Someya, Kazuki Toeda, Takane Fujimori, Makoto Nishizawa
The sedative effects of volatile components in the essential oil of Artemisia montana ("Yomogi") were investigated and measured using gas chromatography-mass spectrometry (GC-MS). Major components identified included 1,8-cineol, camphor, borneol, α-piperitone, and caryophyllene oxide. Among them, 1,8-cineol exhibited the highest flavor dilution (FD) value in an aroma extract dilution analysis (AEDA), followed by borneol, o-cymene, β-thujone, and bornyl acetate. The sedative effects of yomogi oil aroma were evaluated by sensory testing, analysis of salivary α-amylase activity, and measurement of relative fluctuation of oxygenated hemoglobin concentration in the brain using near-infrared spectroscopy (NIRS)...
April 4, 2017: Journal of Oleo Science
https://www.readbyqxmd.com/read/28239064/theoretical-aspects-of-triacylglycerin-positional-isomer-separation-on-reverse-phase-high-performance-liquid-chromatography
#15
Tsugihiko Hirano, Keiichi Yokochi, Koretaro Takahashi
The purpose of the present study is to bear our hypothesis and to make a profound discussion on the theoretical aspects of triacylglycerin (TG) positional isomer separation on reverse phase high performance liquid chromatography (HPLC). Authentic triacid TG positional isomers and authentic diacid TG positional isomers were injected to a monomeric and polymeric HPLC. Relationship between TG molecular structure and those elution profiles were carefully analyzed. In polymeric column, thickness of the ODS chain is high compared to monomeric column...
February 24, 2017: Journal of Oleo Science
https://www.readbyqxmd.com/read/28239063/fatty-acid-and-lipid-class-composition-of-the-microalga-phaeodactylum-tricornutum
#16
Yu-Hong Yang, Lei Du, Masashi Hosokawa, Kazuo Miyashita, Yume Kokubun, Hisayoshi Arai, Hiroyuki Taroda
n-3 Polyunsaturated fatty acids (PUFAs) are essential for the prevention and/or risk reduction of some diseases, including cardiovascular diseases and cancer. Therefore, PUFAs-rich marine microalgae have received considerable research attention. The diatom Phaeodactylum tricornutum, a rich source of lipids and fucoxanthin, has commercial applications in the food and pharmaceutical industries. In this study, the lipid class composition and fatty acid distribution in P. tricornutum under high-density and scale-up cultivation were investigated by thin-layer chromatography and gas chromatography...
February 24, 2017: Journal of Oleo Science
https://www.readbyqxmd.com/read/28239062/flash-extraction-and-physicochemical-characterization-of-oil-from-elaeagnus-mollis-diels-seeds
#17
Lina Kan, Lin Wang, Qingzhen Ding, Yanwen Wu, Jie Ouyang
A flash extraction method was used to isolate Elaeagnus mollis oil (EMO). The optimal extraction parameters, sample/solvent ratio and extraction temperature, were determined to be 1:10 (g/mL) and 40°C, respectively. Especially, the extraction yield reached 49.30% when the extraction time was as short as 2 min. No obvious difference was observed in fatty acid composition, iodine value, saponification number, total phenolic content and tocopherol content between flash-extracted EMO and Soxhlet-extracted EMO, but their physicochemical values were lower than those of cold-pressed EMO...
February 24, 2017: Journal of Oleo Science
https://www.readbyqxmd.com/read/28239061/evaluation-of-the-mechanisms-of-mayonnaise-phospholipid-oxidation
#18
Shunji Kato, Tatsuya Iseki, Yasuhiko Hanzawa, Yurika Otoki, Junya Ito, Fumiko Kimura, Teruo Miyazawa, Kiyotaka Nakagawa
Mayonnaise, which is widely used in foods, is rich in lipids and therefore susceptible to oxidation during the manufacturing process, which can result in loss of quality. Herein, we detected and analyzed phosphatidylcholine hydroperoxide (PCOOH) isomers present in fresh mayonnaise using LC-MS/MS. The PCOOH isomer composition suggests that mayonnaise phospholipid peroxidation is predominantly initiated by radical-oxidation (i.e. upon autoxidation), rather than singlet oxygen-oxidation (e.g. upon light exposure), during manufacturing, packaging and/or storage...
February 24, 2017: Journal of Oleo Science
https://www.readbyqxmd.com/read/28239060/polydimethylsiloxane-droplets-exhibit-extraordinarily-high-antioxidative-effects-in-deep-frying
#19
Nagao Totani, Naoko Yazaki, Miho Yawata
The addition of more than about 1 ppm polydimethylsiloxane (PDMS) into oil results in PDMS forming both a layer at the oil-air interface and droplets suspended in the oil. It is widely accepted that the extraordinarily strong and stable antioxidative effects of PDMS are due to the PDMS layer. However, the PDMS layer showed no antioxidative effects when canola oil did not contain droplets but rather was covered with a layer of PDMS, then subjected to heating under high agitation to mimic deep-frying. Furthermore, no antioxidative effect was exhibited by oil-soluble methylphenylsiloxane (PMPS) in canola oil or by PDMS in PDMS-soluble canola oil fatty acid ester during heating, suggesting that PDMS must be insoluble and droplets in oil in order for PDMS to exhibit an antioxidative effect during deep-frying...
February 24, 2017: Journal of Oleo Science
https://www.readbyqxmd.com/read/28239059/contact-and-repellant-activities-of-zerumbone-and-its-analogues-from-the-essential-oil-of-zingiber-zerumbet-l-smith-against-lasioderma-serricorne
#20
Yan Wu, Shan-Shan Guo, Dong-Ye Huang, Cheng-Fang Wang, Jian-Yu Wei, Zhi-Hua Li, Jian-Sheng Sun, Jia-Feng Bai, Zhao-Fu Tian, Ping-Juan Wang, Shu-Shan Du
The contact toxicity and repellent activities of the essential oil extracted from the rhizomes of Zingiber zerumbet (L.) Smith (Zingiberaceae) was evaluated against cigarette beetles (Lasioderma serricorne). The essential oil obtained by hydrodistillation was investigated by GC-FID and GC-MS. The main constituents of the essential oil were zerumbone (40.2%), α-caryophyllene (8.6%), humulene epoxide II (7.3%), camphene (5.9%) and fenchene (4.7%). Zerumbone and its analogues totally are accounting for 60.3% of the essential oil...
February 24, 2017: Journal of Oleo Science
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