• Journal of the Korean Society of Food Science and Nutrition
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• v.28 no.4
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• pp.907-911
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• 1999

To evaluate the effect of defatted sesame flour(DSF) on the oxidative stress of ethanol feeding in rats, Wistar male rats were divided into 4 groups of control, ethanol, DSF and DSF ethanol. Each group was sacrificed after feeding for 4 weeks and was examined by measuring the formation of 2 thiobarbituric acid reactive substance(TBARS), total cholesterol(TC) in serum, redox glutathione S transferase(GST) enzyme activity and the contents of glutathione(GSH) in the liver. The formation of TBARS in the liver after ethanol feeding was significantly increased comparing to the control, but the levels were significantly decreased by the DSF as compared to the ethanol feeding group(p<0.05). When compared to fed control diet, we found that serum TC levels were significantly lower in the DSF fed group than control group (p<0.05). The activity of hepatic GST was significantly increased by DSF as compared to the control and was decreased by ethanol feeding. On the other hand, the hepatic contents of GSH were unaffected by DSF feeding. Our findings suggest that feeding DSF may inhibit ethanol induced oxidative stress may be due to the stimulation of antioxidative activity by sesaminol glucosides in DSF.

• Journal of Food Hygiene and Safety
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• v.13 no.1
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• pp.24-28
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• 1998

Korean sesame oil mixed with corn oil and Chinese sesame oil were subjected to instrumental determination for fatty acid composition, sesaminol and sesamin contents, and induction period by AOM test to obtain basic data for ascertaining the truth of pure sesame oil, respectively. In sesame oil mixed with corn oil, stearic acid content of sesame oil containing above 20% corn oil was remarkably discriminated from that of pure sesame oil. Oleic and linoleic acid contents of sesame oil with 10% corn oil were significantly differnt from that of pure sesame oil. Stearicllinoleic acid ratio of sesame oil mixed with corn oil dcreased in proportion to corn oil content in sesame oil. Sesamolin and sesamin contents of sesame oil containing 30% corn oil were lower 18.3% and 21.0% than those of pure sesame oil, respectively. Induction periods of sesame oil by AOM were 8.14~9.24 hrs in Chinese sesame oil and sesame oils including 20% and 40% corn oils, but around 16hrs in Korean pure sesame oil. Based on the above results, it is considered that the comparisons of fatty acids, sesaminol and sesamin contents, and induction period by AOM test might be one of the potential criteria in discriminating between pure sesame oil and sesame oil mixed with corn oil.

• Journal of Marine Bioscience and Biotechnology
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• v.2 no.1
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• pp.11-22
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• 2007

This aims to review natural products transformed by mimic intestinal metabolisms with microorganisms and hydrolytic enzymes, which exhibit enforced biological activity, higher extraction yield and identification of active components. In the process, transformation to the smaller active compounds with enzymes and microbes mimics the pharmacological action of natural products by intestinal bacteria. In order to establish conditions for the fermentation and enzyme reaction, it is required to choose several natural products for biotransformation and investigate the optimal conditions for the fermentation or the enzyme reaction such as composition, temperature, pH, inoculum, and cultivation time. It is expected an increase of the internal absorption of the active materials without regard to the intestinal microbes or its ability through biosynthesis of the active materials by the microbes and enzymes. And this techniques can be applied to biotransformation of natural products such as sesaminol, resveratrol, 1-deoxy nojirimycin, naringenin, quercetin, and baicalin and to the metabolism study using the animal model.

• KOREAN JOURNAL OF CROP SCIENCE
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• v.51 no.1
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• pp.73-80
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• 2006

Sesame (Sesamum indicum L.) seeds contain abundant oil and antioxidative lignans related to the seed quality. To evaluate the potential effects of drought stress on the chemical composition of sesame seeds, eighteen cultivars were imposed water-deficit condition by withholding irrigation during 15 days at podding and maturing stage, compared with well-watered plants as control in seed yield and chemical composition. Drought treatments showed great decrease of seed yield with not affecting seed weight. The contents of sesamin and sesamolin decreased while lignan glycosides inversely increased in response to drought stress. Oil content was not significantly changed by drought treatment in spite of its slight decrease. In case of fatty acid composition, there were significant differences in increase of oleic acid while inverse decrease of linoleic acid under drought stress condition. These results demonstrate that the chemical composition of sesame seed may be modified with drought stress. In particular, the increase of sesaminol glucosides with strong antioxidative activity was observed.

• KOREAN JOURNAL OF CROP SCIENCE
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• v.47 no.6
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• pp.443-447
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• 2002

This study was carried out to determine the differences in the growth, grain yield, and seed quality of sesame plant according to seeding date between P,E. vinyl-house and outdoor cultures. Reproductive growth period in vinyl-house culture was shorter than in outdoor culture. Stem length and capsule setting length of sesame were much longer in vinyl-house culture than in outdoor culture. Also, number of capsules per plant and 1,000 grain weight in vinyl-house culture were higher, specially the grain yield was approximately 57% more than in outdoor culture. In vinyl house culture, sesame plants sown on June 8 had longer capsule setting length, more capsules per plant, higher 1,000 grain weight, and higher percent ripened grain at the upper part of the capsule settings than those sown in May 9. They also had higher 1,000 grain weight at the middle and lower part of the capsule settings compared to May 9 seeding. However, no difference in grain yield of in seeding dates was observed. In outdoor culture, sesame plants, which was sown on May 9, had more effective branch number and capsule number and plant compared to those sown on June 8. Though sesame plants sown on May 9 had lower percent ripened grain at the upper and middle part of the capsule settings and lower 1,000 grain weight, the seed yield was similar to those sown on June 8. No difference in chromaticity value $L^*$ of sesame seeds between two culture conditions was observed. The $a^*$ value was higher in vinyl-house culture than outdoor culture while $b^*$ value was higher in outdoor culture. Sesaminol triglucoside content of sesame seeds was higher in vinyl-house culture than in outdoor culture. On the other hand, the content of sesamin and sesamolin from sesame seeds in vinyl-house culture were lower than in outdoor culture.

• KOREAN JOURNAL OF CROP SCIENCE
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• v.47
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• pp.140-149
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• 2002

Sesame (Sesamum indicum L.) is probably the most ancient oilseed crop known in the world. Sesame seed is known for its high nutritional value and for having oil (51%) and protein (20%) content. The fatty acid composition of sesame oil is palmitic acid (7.8%), stearic acid (3.6%), oleic acid (45.3%), and linoleic acid (37.7%). Sesame oil is characterized by a very high oxidative stability compared with other vegetable oils. Two lignan-type compounds, sesamin and sesamolin, are the major constituents of sesame oil unsaponifiables. Sesamol (a sesamolin derivative) can be present in sesame seeds and oils in very small amount. Other lignans and sesamol are also present in sesame seeds and oils in very small amount as aglycones. Lipid oxidation activity was significantly lower in the sesamolin-fed rats, which suggests that sesamolin and its metabolites contribute to the antioxidative properties of sesame seeds and oil and support that sesame lignans reduce susceptibility to oxidative stress. Sesaminols strongly inhibit lipid peroxidation related to their ability to scavenge free radical. The sesame seed lignan act synergistically with vitamin I in rats fed a low $\alpha$-tocopherol diet and cause a marked increase in a u-tocopherol concentration in the blood and tissue of rats fed an $\alpha$-tocopherol containing diet with sesame seed or its lignan. The authors are reviewed and discussed for present status and prospects of quality evaluation and researched in sesame seeds to provide and refers the condensed informations on their quality.

• Journal of the East Asian Society of Dietary Life
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• v.14 no.4
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• pp.348-354
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• 2004

중국, 수단, 인도 및 파키스탄에서 생산된 참깨(각 10종)의 조지방 함량, 지방산 조성, 세사민, 세사몰린 및 세사미놀 배당체 함량을 측정하여 품질 특성을 평가하였다. 참깨의 조지방 함량은 파키스탄산 42.47 %, 중국산 38.95%, 인도산 34.96% 및 수단산 33.93%로 파키스탄산이 가장 높았으나 지역간에는 유의적인 차이가 나타나지 않았다. 세사민 함량은 중국산 634.75 mg/100 g seed, 수단산 630.66 mg/100 g seed, 인도산 381.55 mg/100 g seed 및 파키스탄산 401.00 mg/100 g seed으로 중국산이 유의적으로 높게 나타났다. 세사몰린 함량은 중국산 218.99 mg/100 g seed, 수단산 234.49 mg/100 g seed, 인도산 (185.64 mg/100 g seed) 및 파키스탄산 (127.04 mg/100 g seed)으로 지역간에 유의적인 차이가 있는 것으로 나타났다. 세사미놀 배당체 함량은 중국산 321.40 mg/100 g seed, 수단산 218.99 mg/100 g seed, 인도산 505.04 mg/100 g seed 및 파키스탄산 342.87 mg/100 g seed로 인도산이 가장 높은 함량이었다. 참깨 핵산 추출물의 전자공여능을 측정한 결과 인도산의 전자공여능이 유의적으로 높았고 파키스탄산 및 중국산순 이었다. 이상의 결과 지역별 참깨 품질 특성에는 유의적인 차이가 있었고 특히 최근에 기능성 성분으로 관심이 집중되고 있는 세사민과 세사몰린 및 세사미놀 배당체는 지역에 따라 현저한 차이가 있는 것으로 나타났다.