著者

松本 太郎 曾根 博 新谷 勲

出版者

Japan Oil Chemists' Society

雑誌

油脂化学協会誌 (ISSN:18842011)

巻号頁・発行日

vol.4, no.3, pp.131-133, 1955-05-15 (Released:2009-09-04)

参考文献数

4

被引用文献数

1 5

著者

Wei Zeng Yasushi Endo

出版者

Japan Oil Chemists' Society

雑誌

Journal of Oleo Science (ISSN:13458957)

巻号頁・発行日

vol.68, no.7, pp.649-658, 2019 (Released:2019-07-01)

参考文献数

43

被引用文献数

6 33

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Camellia oleifera, C. japonica and C. sinensis are three representative crops of the genus Camellia. In this work, we systematically investigated the lipid characteristics of these seed oils collected from different regions. The results indicated significant differences in acid value (AV), peroxide value (PV), iodine value (IV), saponification value (SV) and relative density of the above-mentioned camellia seed oils (p < 0.05). The C. japonica seed oils showed the highest AV (1.7 mg/g), and the C. sinensis seed oils showed the highest PV (17.4 meq/kg). The C. japonica seed oils showed the lowest IV (79.9 g/100 g), SV (192.7 mg/g) and refractive index (1.4633) of all the oils, while the C. sinensis seed oils showed the lowest relative density (0.911 g/cm3). The major fatty acids in the camellia seed oils were palmitic acid (16:0), oleic acid (18:1) and linoleic acid (18:2); the oleic acid in C. oleifera and C. japonica seed oils accounted for more than 80% of the total fatty acids. The oleic acid levels in the C. oleifera and C. japonica oils were higher than those in the C. sinensis seed oils, while the linoleic acid levels in the former were lower than those in the latter one. Differences also exist in the triacylglycerol (TAG) composition, although the most abundant TAG molecular species in the camellia seed oils was trioleoylglycerol (OOO). Seven sterol species, squalene and α-tocopherol were detected in the camellia seed oils, however, the contents of tocopherol and unsaponifiable molecules in the C. oleifera and C. japonica seed oils were significantly lower than those in the C. sinensis seed oil. These results demonstrated that the varieties of Camellia affected the seed oil lipid characteristics.

著者

Tatsuhiro Matsuo Takako Yamada Tetsuo Iida Susumu Mochizuki Akihide Yoshihara Kazuya Akimitsu

出版者

Japan Oil Chemists' Society

雑誌

Journal of Oleo Science (ISSN:13458957)

巻号頁・発行日

pp.ess22116, (Released:2022-08-15)

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d-Allulose (d-psicose) is a rare sugar, that contains no calories and exhibits 70% relative sweetness when compared with sucrose. Recently, several studies have demonstrated the anti-obesity effect of d-allulose, mediated by suppressing lipogenesis and increasing energy expenditure. Medium-chain triacylglycerols (MCTs) are lipids formed by 3 medium-chain fatty acids (MCFAs) with 6–12 carbon atoms attached to glycerol. MCTs have been expensively studied to reduce body fat accumulation in rats and humans. The anti-obesity effect of MCTs was not confirmed depending on the nutritional conditions because MCT might promote lipogenesis. In the present study, we examined the effects of simultaneous intake of diets containing low (5%) or high (13%) MCTs, with or without 5% d-allulose, on body fat accumulation in rats (Experiment 1). Furthermore, we assessed the interaction between 5% MCT and 5% d-allulose in the diet (Experiment 2). In Experiment 1, intra-abdominal adipose tissue weight was significantly greater in the high MCT diet groups than in the commercial diet (control) group. d-Allulose significantly decreased weights of intra-abdominal adipose tissue, carcass fat, and total body fat, however, these weights increased as the amount of MCT added increased. In Experiment 2, d-allulose significantly decreased almost all body fat indicators, and these values were not influenced by the presence or absence of MCT addition. The antiobesity effect of d-allulose was observed with or without dietary MCT, and no synergistic effect was detected between d-allulose and MCT. These results suggest that d-allulose is a beneficial food ingredient in diets aimed at reducing body fat accumulation. However, further research is required on the synergistic effects between d-allulose and MCTs.

著者

Hitomi Shikano Yoko Miyama Ryuzo Ikeda Takeshi Haga Junichi Suda Kazuaki Yoshinaga Shu Taira

出版者

Japan Oil Chemists' Society

雑誌

Journal of Oleo Science (ISSN:13458957)

巻号頁・発行日

pp.ess20143, (Released:2020-07-09)

被引用文献数

5

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The drying process used for persimmon fruit (Diospyros kaki) can alter the composition of nutrients, and especially vitamins. We visually determined whether the amounts of vitamin A1, vitamin B6 and vitamin C vary after drying persimmon fruit, using matrix-assisted laser desorption/ionization (MALDI) mass spectrometry (MS) imaging. Drying altered the amount of moisture between the fruit interior and surface. Vitamin A1 is lipophilic and localized at the desiccated outer regions (pericarp) and not in the inner region (mesocarp and endocarp), and its concentration was increased 3.4 times in dried fruit compared with raw persimmon. Vitamin B1 and B6 are water-soluble and concentrated in the moist mesocarp. The vitamin C content of dried persimmon is decreased by drying in the sun. The drying process affected the localizations and amounts of all the vitamins. The observed opposite localization of vitamin A1 compared to B1 and B6 was due to vitamin A1 being lipophilic and B1 and B6 being water soluble. Multiple-vitamin imaging using MALDI-MSI has great potential for enhancing commodity value and for visually investigating the effects of manufacturing processes.

著者

Hirofumi Enomoto Shiro Takeda Hajime Hatta

出版者

Japan Oil Chemists' Society

雑誌

Journal of Oleo Science (ISSN:13458957)

巻号頁・発行日

pp.ess21042, (Released:2021-06-11)

被引用文献数

6

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Matrix-assisted laser desorption/ionization-mass spectrometry imaging (MALDI-MSI) is a powerful technique for visualizing lipids in biological tissues. Phosphatidylinositol (PI), a phospholipid in pork, is a major source of inositol in animal-derived foods believed to be protective against diseases related to pregnancy and cancer. However, the distribution of PI molecular species in pork is not well understood. Here, we performed MALDI-MSI analysis to investigate the distribution and composition of PI molecular species in pork chop comprising Longissimus thoracis et lumborum muscle (loin), intermuscular fat tissue, transparent tissue, and spinalis muscle. Twelve diacyl-PI molecular species were identified using liquid chromatography-electrospray ionization-tandem mass spectrometry (MS/MS) and MALDI-MS/MS analysis and visualized using MALDI-MSI. Spinalis muscle had the highest amount of identified PI molecular species, followed by loin, transparent tissue, and intermuscular fat tissue. The diacyl-PI molecular species containing hexadecadienoic, oleic, linoleic and eicosadienoic acids at the sn-2 position were mainly abundant in the loin and spinalis muscle, whereas those containing mead, arachidonic, docosatetraenoic, and docosapentaenoic acids at the sn-2 position were mainly abundant in both muscles as well as transparent tissues. Notably, the balance of PI molecular species differed among the tissues depending on fatty acid compositions at the sn-2 position. These results suggested that MALDI-MSI is a promising tool for assessing the association between individual pork tissues and the protective effects of PI molecular species against diseases related to pregnancy and cancer. To the best of our knowledge, this is the first report showing tissue-specific distributions of PI molecular species in pork chop using MALDI-MSI.

著者

Nakamura Takashi Sato Katsuyuki Akiba Mitsuo OHNISHI Masao

出版者

Japan Oil Chemists' Society

雑誌

Journal of Oleo Science (ISSN:13458957)

巻号頁・発行日

vol.55, no.4, pp.191-197, 2006

被引用文献数

12

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In these experiments, the antioxidative activity of urobilinogen, a major fecal pigment-related compound and reduced metabolite of bilirubin, was shown. Urobilinogen was synthesized from commercial bilirubin by reduction, and the structure was confirmed with mass spectroscopy and NMR analyses. The product was identified as <i>i</i>-urobilinogen. The DPPH radical scavenging activity of urobilinogen was higher than other antioxidants (α-tocopherol, bilirubin and β-carotene). Moreover, the formation of hydroperoxides of linoleic acid with 2, 2'-azobis (2, 4- dimethylvaleronitrile) in methanol was suppressed by the addition of synthesized urobilinogen. On the other hand, in the NMR spectrum measurement, we found the signal decrease of a proton from C₁₀ methylene. It was shown that this proton was exchanged with a deutrium of CD₃OD. This methylene can easily release the hydrogen as proton donor. These results suggest that urobilinogen can inhibit the radical chain reaction by trapping free radicals.<br>

著者

Minako Okukawa Yuika Yoshizaki Mayu Tanaka Shigekazu Yano Yoshimune Nonomura

出版者

Japan Oil Chemists' Society

雑誌

Journal of Oleo Science (ISSN:13458957)

巻号頁・発行日

pp.ess20362, (Released:2021-05-07)

被引用文献数

4

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1,2-Alkanediols are characteristic cosmetic ingredients because these moisturizers exhibit the antibacterial activity against Staphylococcus aureus (S. aureus) and Staphylococcus epidermidis (S. epidermidis). However, the antimicrobial behavior in mixed systems containing several active ingredients is unclear because previous reports focus on an antibacterial system containing only 1,2-alkanediol. In this study, the minimal inhibitory concentration (MIC) and the fractional inhibitory concentration (FIC) were evaluated for 1,2-dodecanediol/lactic acid, 1,2-dodecanediol/myristic acid, 1,2-dodecanediol/methylparaben, and 1,2-dodecanediol/isopropyl methylphenol mixed systems to show the effect of the addition of other antimicrobial components to 1,2-dodecanediol. The antibacterial property of 1,2-dodecanediol/lactic acid mixed system was almost similar compared to 1,2-dodecanediol monomeric system. On the other hand, the antimicrobial activity of 1,2-dodecanediol against S. epidermidis was inhibited in the 1,2-dodecanediol/myristic acid mixed system. Because the selective antimicrobial activity of myristic acid against S. aureus was demonstrated in the mixed system. The present findings are useful for designing formulations of cosmetics and body cleansers containing 1,2-dodecanediol.

著者

宮澤 清 田村 宇平 富田 健一

出版者

Japan Oil Chemists' Society

雑誌

油化学 (ISSN:18842003)

巻号頁・発行日

vol.39, no.11, pp.925-930, 1990-11-20 (Released:2009-10-16)

参考文献数

23

被引用文献数

2 2

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Properties of N-acyl-N-methyltaurate(AMT), including surface active properties, cutaneous effects, influence on hair, and application to liquid type hair shampoo, are reviewed.It has been found that AMT exhibit considerably high safety on skin in comparison with typical surfactants. As the result of cutaneous effects, the reduction of the amounts of dandruff was observed when using AMT shampoo.In addition, AMT shows weaker action on the desintegration of hair cuticle.Consequently, AMT can be a good surfactant as a detergent for the hair and scalp(skin).On the other hand, cutaneous effects and physico-chemical properties of anionic/amphoteric surfactants mixed system, were investigated.It has been found that these physico-chemical results were in good correlation with those pbtained by cutaneous effects. The synergistic reductions in cutaneous effects were observed as well as physico-chemical results.These findings have promoted the development of hair shampoo composed of AMT.

著者

Tadashi HASE Yumiko KOMINE Shinichi MEGURO Yoko TAKEDA Hidekazu TAKAHASHI Yuji MATSUI Setsujiro INAOKA Yoshihisa KATSURAGI Ichiro TOKIMITSU Hiroyuki SHIMASAKI Hiroshige ITAKURA

出版者

Japan Oil Chemists' Society

雑誌

Journal of Oleo Science (ISSN:13458957)

巻号頁・発行日

vol.50, no.7, pp.599-605, 2001 (Released:2002-06-28)

参考文献数

41

被引用文献数

60 65

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To examine the anti-obesity effects of tea catechins in humans, a trial study using healthy male subjects (27-47 years). Comprising in equal number a low dose catechin (LDC) group (n=11) and high dose catechin (HDC) group (n=12). The groups were administered catechins at 118.5 mg and 483.0 mg a day for 12 weeks, respectively. At 4 and 12 weeks, effect evaluation was made based on change in weight, body mass index (BMI), waist circumference, body fat ratio and abdominal fat as determined by computed tomography (CT) and triacylglycerol, total cholesterol, free fatty acid, glucose, insulin and total plasminogen activator inhibitor-1 (PAI-1) in serum. In the HDC group, at 12 weeks, weight, BMI, waist circumference, body fat ratio, abdominal fat and total cholesterol, glucose, insulin, PAI-1 in serum were noted to have significantly decreased from values at 0 week. In the LDC group, only weight, BMI and insulin had changed. In the HDC group, BMI had decreased significantly in 25≤BMI subjects compared to 25>BMI subjects. In the 25≤BMI subjects, BMI decreased significantly more in the HDC group. Tea catechins are thus shown here for the first time to have the anti-obesity effects in humans.

著者

Noriaki Nagai Yoshimasa Ito Atsushi Taga

出版者

Japan Oil Chemists' Society

雑誌

Journal of Oleo Science (ISSN:13458957)

巻号頁・発行日

vol.62, no.9, pp.737-743, 2013 (Released:2013-09-03)

参考文献数

31

被引用文献数

20 23

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Maple syrup is used as a premium natural sweeter, and is known for being good for human health. In the present study, we investigate whether maple syrup is suitable as a sweetener in the management of type 2 diabetes using Otsuka Long-Evans Tokushima Fatty (OLETF) rats, a model of type 2 diabetes mellitus. OLETF rats develop type 2 diabetes mellitus by 30 weeks of age, and 60-week-old OLETF rats show hyperglycemia and hypoinsulinemia via pancreatic β-cell dysfunction. The administration of sucrose or maple syrup following an OGT test increased plasma glucose (PG) levels in OLETF rats, but the enhancement in PG following the oral administration of maple syrup was lower than in the case of sucrose administration in both 30- and 60-week-old OLETF rats. Although, the insulin levels in 30-week-old OLETF rats also increased following the oral administration of sucrose or maple syrup, no increase in insulin levels was seen in 60-week-old OLETF rats following the oral administration of either sucrose or maple syrup. No significant differences were observed in insulin levels between sucrose- and maple syrup-administered OLETF rats at either 30 or 60 weeks of age. The present study strongly suggests that the maple syrup may have a lower glycemic index than sucrose, which may help in the prevention of type 2 diabetes.

著者

大島 泰郎

出版者

Japan Oil Chemists' Society

雑誌

日本油化学会誌 (ISSN:13418327)

巻号頁・発行日

vol.46, no.5, pp.535-538,598, 1997-05-20 (Released:2009-10-16)

参考文献数

7

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真正細菌及び古細菌に属する好熱性細菌の生体高分子, タンパク質, 核酸, DNA, tRNA, および生体膜を構成している脂質の主要成分について, どのように耐熱性を獲得しているか, その分子機構を概説した。

著者

石井 文由

出版者

Japan Oil Chemists' Society

雑誌

日本油化学会誌 (ISSN:13418327)

巻号頁・発行日

vol.49, no.10, pp.1141-1148,1299, 2000-10-20 (Released:2009-11-10)

参考文献数

31

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リピッドマイクロスフェア (リピッドエマルション) 製剤は植物油 (大豆油) 中に付加価値の高い薬物を溶解あるいは分散させたo/w型エマルション製剤である。この製剤では油溶性あるいは疎水性の薬物を油相である分散相に効率良く溶解あるいは分散することができる。リピッドマイクロスフェアは医薬領域におけるドラッグデリバリーシステム, つまりドラッグキャリヤー製剤として, ある特別な (病巣) 部位のみに薬物を標的化, 薬物の徐放化, 持続化, 不安定な薬物の保護, 薬理作用の増強などのような利用が期待できる。そこで本総説では, 最近の注目すべき研究例を紹介しながら, リピッドマイクロスフェアの調製から応用までを詳述する。

著者

堀 太郎 板坂 修

出版者

Japan Oil Chemists' Society

雑誌

油化学 (ISSN:18842003)

巻号頁・発行日

vol.20, no.10, pp.612-626, 1971-10-20 (Released:2009-11-10)

参考文献数

66

著者

Koki Sugimoto Ryota Hosomi Takaki Shimono Seiji Kanda Toshimasa Nishiyama Munehiro Yoshida Kenji Fukunaga

出版者

Japan Oil Chemists' Society

雑誌

Journal of Oleo Science (ISSN:13458957)

巻号頁・発行日

vol.70, no.7, pp.965-977, 2021 (Released:2021-07-01)

参考文献数

50

被引用文献数

2

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Due to the growing demand of n-3 polyunsaturated fatty acids (PUFA) as supplements and pharmaceutical products worldwide, there are concerns about the exhaustion of n-3 PUFA supply sources. We have successfully prepared high-quality scallop oil (SCO), containing high eicosapentaenoic acid and phospholipids contents, from the internal organs of the Japanese giant scallop (Patinopecten yessoensis), which is the largest unutilized marine resource in Japan. This study compared the cholesterol-lowering effect of SCO with fish oil (menhaden oil, MO) and krill oil (KO) in obese type II diabetic KK-A y mice. Four-week-old male KK-A y mice were divided into four groups; the control group was fed the AIN93G-modified high-fat (3 wt% soybean oil + 17 wt% lard) diet, and the other three groups (SCO, MO, and KO groups) were fed a high-fat diet, in which 7 wt% of the lard in the control diet was replaced with SCO, MO, or KO, respectively. After the mice were fed the experimental diet for 42 days, their serum, liver, and fecal lipid contents as well as their liver mRNA expression levels were evaluated. The SCO group had significantly decreased cholesterol levels in the serum and liver; this decrease was not observed in the MO and KO groups. The cholesterol-lowering effect of SCO was partly mediated by the enhancement of fecal total sterol excretion and expression of liver cholesterol 7α-hydroxylase, a rate-limiting enzyme for bile acid synthesis. These results indicate that dietary SCO exhibits serum and liver cholesterol-lowering effects that are not found in dietary MO and KO and can help prevent lifestyle-related diseases.

著者

難波 幸弘 榊原 敏之

出版者

Japan Oil Chemists' Society

雑誌

油化学 (ISSN:18842003)

巻号頁・発行日

vol.34, no.8, pp.593-598, 1985-08-20 (Released:2009-11-10)

参考文献数

46

被引用文献数

1 1

著者

Yuwei Chen Yongbo She Ramandeep Kaur Na Guo Xiaohua Zhang Ruisan Zhang Xingchun Gou

出版者

Japan Oil Chemists' Society

雑誌

Journal of Oleo Science (ISSN:13458957)

巻号頁・発行日

pp.ess19116, (Released:2019-08-14)

被引用文献数

10

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Cardiovascular disease (CVD) has emerged as the leading cause of dealth worldwide today. Lowering circulating total cholesterol (TC) and low density lipoprotein cholesterol (LDL-C) is one of the most effective approaches of CVD prevention. Dietary guidelines and health organizations approved using plant sterols (PS) as the alternative to conventional method in attenuating circulating TC and LDL-C levels and risk of CVD. However, current findings apprear to be controversial on the efficacy of PS. Giving the rise of the field “Nutrigenetics”, single nucleotide polymorphisms (SNPs) such as CYP7A1-rs3808607 have been identified that strongly associate with cholesterol metabolism in response to PS intake, towards causing inter-individual variations. This review article aims to discuss the efficacy of dietary PS in managing cholesterol levels based on findings from recent studies. The scope includes reviewing evidence on supporting the efficacy, the metabolic claims, inter-individual variations as well as sitosterolemia associated with PS intake.

著者

後藤 直宏

出版者

Japan Oil Chemists' Society

雑誌

日本油化学会誌 (ISSN:13418327)

巻号頁・発行日

vol.46, no.10, pp.1299-1307, 1997-10-20 (Released:2009-10-16)

参考文献数

28

被引用文献数

2 1

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油脂代替物は, 炭水化物ベースの油脂類似物, タンパク質ベースの油脂類似物, 構造脂質, 合成油脂類似物よりなる。炭水化物ベース及びタンパク質ベースの油脂類似物は, 低温もしくは室温で製造されている多くの製品に現在使用されている。これらの油脂類似物は, 通常油脂の9kcal/gと比較してわずか4kcal/gしかカロリーを有さないため, 通常油脂を含む製品と比較して, これら油脂類似物を使用した製品はカロリーを低下させることが可能となる。しかしながらこれら油脂類似物は揚げ物やチョコレートには使用されない。一方, 構造脂質と合成油脂類似物は, チョコレート, 焼き物, スナック菓子に使用されている。合成油脂類似物は, 脂質の構造を持たず, 小腸内で消化されにくい。そのためこれら類似物はカロリー0, もしくはほぼ0となる。構造脂質を使用した製品は, 日本市場で既に出回っているが, 合成油脂類似物の使用はまだ日本では許可されていない。

著者

斎藤 浩

出版者

Japan Oil Chemists' Society

雑誌

油化学 (ISSN:18842003)

巻号頁・発行日

vol.26, no.12, pp.754-764, 1977-12-20 (Released:2009-10-20)

参考文献数

54

被引用文献数

1 1 2

著者

Fatma Hadrich Zouhaier Bouallagui Han Junkyu Hiroko Isoda Sami Sayadi

出版者

Japan Oil Chemists' Society

雑誌

Journal of Oleo Science (ISSN:13458957)

巻号頁・発行日

vol.64, no.8, pp.835-843, 2015 (Released:2015-08-01)

参考文献数

27

被引用文献数

22 51

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To date, numerous studies have reported on the antidiabetic properties of various plant extracts through inhibition of carbohydrate-hydrolysing enzymes. The objective of this research was to evaluate the inhibitory effect of the hydroxytyrosol and the oleuropein against α-amylase and α-glucosidase. The hydroxytyrosol was purified from olive leaves. The result shows that the hydroxytyrosol had the strongest α-glucosidase inhibitory effect with IC50 values of 150 μM with mild inhibition against α-amylase. The enzyme kinetic studies, using Lineweaver–Burk indicated that, in the presence of the hydroxytyrosol, the Michaelis–Menton constant (Km) remained constant but the maximal velocity (Vmax) decreased, revealing a non-competitive type of inhibition with inhibition constants; Ki for the formation of the inhibitor-enzyme complex and Kis for the formation of the inhibitor-enzyme-substrate complex of 104.3 and 150.1 μM, respectively. On the other hand, oleuropein showedan uncompetitive inhibition. The concentrations used in this work were below cytotoxic levels observed at 400 μM. However, at 600 μM, the hydroxytyrosol significantly decreased viability of the Caco-2 cells (p < 0.05) and in the case of the oleuropein, there’s an increase in cell number compared to control (p < 0.05). These results suggest that the hydroxytyrosol and oleuropein are two potential effective α-glucosidase inhibitors for management of postprandial hyperglycemia.

著者

奈良部 均

出版者

Japan Oil Chemists' Society

雑誌

油化学 (ISSN:18842003)

巻号頁・発行日

vol.41, no.9, pp.897-902, 1992-09-20 (Released:2009-10-16)

参考文献数

33

被引用文献数

1 3