• 제목/요약/키워드: isoflavone aglycones

검색결과 57건 처리시간 0.027초

Antiinflammatory Activity of Naturally Occurring Flavone and Flavonol Glycosides

  • Lee, Song-Jin;Son, Kun-Ho;Chang, Hyeun-Wook;Do, Jae-Chul;Jung, Keun-Young;Kang, Sam-Sik;Kim, Hyun-Pyo
    • Archives of Pharmacal Research
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    • 제16권1호
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    • pp.25-28
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    • 1993
  • Our previous report demonstrated that certain flavonoid aglycones such as apigenin (flavone), quercetin, morin (flavonols), and biochanin A (isoflavone) showed in vivo antiinflammatory activity via topical and oral routes of adminstation. As a continual study, the various flavonoid glycosides have been evaluated in mouse ear edema assay using archidonic acid or croton-oil as a inflammagen. Flavonoids were orally administered (2 mg/mouse) and ear edema inhibition was measured. Significant antiinflammatory activities were found esepcially in flavone and flavonol glycosides (15-29% inhibition) although the flavonoid derivatives tested showed less antiinflammatory activity than hydrocortisone or indomethacin. Chalcone and flavanone derivatives were not significantly active. And in general, flavonol glycosides of kaempferol-type were found to have a higher oral antiinflammatory activity than that of flavonol glycosides of quercetin-type in mice.

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Soy Isoflavones and Soyasaponins: Characteristics and Physiological Functions

  • Lee, Yoon-Bok;Lee, Hyong-Joo;Kim, Chung-Ho;Lee, Soo-Bok;Sohn, Heon-Soo
    • Journal of Applied Biological Chemistry
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    • 제48권2호
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    • pp.49-57
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    • 2005
  • Soy is an important food in Asia and many studies have suggested that the low incidences of chronic diseases in Asian countries are associated with diets that are rich in soy. Soy contains many kinds of phytochemicals, and soy isoflavones and soyasaponins have received considerable attention. Twelve isoflavone components have been isolated from soy: three aglycones (daidzein, genistein, and glycitein), and their respective nine glucosidic conjugates. Soy isoflavones are similar in structure to estrogen and exhibit both estrogenic and antiestrogenic activities. Soy isoflavones exhibit anticancer activity, can reduce the risk of cardiovascular disease, and are beneficial to brain and bone health. Soyasaponins are divided into three groups (A, B, and E saponins), and they exhibit hypocholesterolemic, anticancer, hepatoprotective, antioxidative, and anti-human-immunodeficiency-virus effects. Despite the abundant literature suggesting that soy isoflavones and soyasaponins have potential applications in preventive medicine, further research is needed to standardize dosages and ensure their efficacy.

고 이소플라본 함유 콩잎의 저장 온도와 기간에 따른 영양학적 성분과 항산화 활성 변화 (Changes in nutritional components and antioxidant activities from soybean leaves containing high isoflavone contents according to different storage temperatures and periods)

  • 이희율;이동희;김수철;조두용;조계만
    • Journal of Applied Biological Chemistry
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    • 제63권4호
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    • pp.305-317
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    • 2020
  • 본 연구는 고 이소플라본 함유 콩잎을 5, 25 및 55 ℃에서 180일간 저장하면서 지방산, 아미노산, 무기질, 이소플라본, 총 phenolics, 총 flavonoids 및 라디칼 소거활성 변화를 확인하였다. 총 지방산 함량은 저장 기간에 따라 큰 차이를 보이지 않았다. 총 아미노산 함량은 저장 0일에 1313.81 mg/100 g에서 5, 25 및 55 ℃에서 180일째 각각 1776.15, 1693.93 및 1551.18 mg/100 g로 증가하였다. 총 무기질 함량은 저장 초기(51.65 mg/100 g)에 비해 5, 25 및 55 ℃에서 180일째 각각 49.93, 50.20 및 61.21 mg/100 g로 검출되었다. 총 이소플라본 함량은 저장기간 중 비교적 큰 변화가 없었다. 55 ℃에서 180일 저장의 경우, glycosides와 aglycones은 각각 2195.13과 480.61 ㎍/g로 증가하였으며, malonylglycosides는 1289.48 ㎍/g로 감소하였다. 한편, 총 phenolics 및 총 flavonoids 함량은 0일 저장 시료에서 각각 9.31과 8.61 mg/g에서 180일째 각각 9.97과 9.30 mg/g으로 약간 증가하였고, 이에 상응하여 DPPH, ABTS 및 hydroxyl 라디칼 소거활성은 저장 0일째 각각 30.91, 55.98 및 23.27%에서 180일째 37.10, 62.54 및 30.95%로 증가하였다.

전통된장의 숙성기간에 따른 γ-Aminobutyric Acid(GABA), Isoflavone 함량 변화 (Changes in Contents of γ-Aminobutyric Acid (GABA) and Isoflavones in Traditional Korean Doenjang by Ripening Periods)

  • 조성진;홍충의;양성용;최경근;김형국;양혁;이광원
    • 한국식품영양과학회지
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    • 제40권4호
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    • pp.557-564
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    • 2011
  • 본 연구는 전통된장의 숙성기간에 따라 일반성분, pH, 색도, 지방산, 아미노산, ${\gamma}$-aminobutyric acid(GABA) 및 isoflavone의 변화에 대해 연구하였다. 실험에 사용한 전통 된장은 강원도 서원 농협에서 제조한 된장으로 숙성기간이 1, 3, 5, 7 및 10년이 경과된 된장을 사용하였으며, 대조군으로는 숙성시키지 않은 된장을 사용하였다. 일반성분 중 수분의 경우 3년째까지 일시적으로 증가하였다가 그 이후에는 감소하는 경향을 나타내었으며, pH와 색도는 숙성기간이 증가함에 따라 감소하였다. 지방산의 경우 숙성기간에 따른 유의적인 차이는 없었으나 불포화지방산의 비율이 60% 이상을 차지하였다. 아미노산 또한 유의적인 차이는 없었으나 GABA의 전구체인 glutamic acid가 숙성기간이 증가함에 따라 유의적으로 감소하는 것으로 나타났다. 대조군 시료의 경우 GABA의 함량을 분석한 결과 24.9 mg/kg이었으나, 숙성기간이 증가함에 따라 43.8, 120.6, 569.5, 930.7 그리고 10년 숙성된 된장의 경우 1,938.7 mg/kg으로 대조군 시료에 비해 약 77배 증가하였다. Isoflavone 중 glycoside인 daidzin, genistin 및 glycitin은 유의적인 차이가 없었으나, aglycone 형태인 genistein과 daidzein의 경우 숙성기간이 경과될수록 증가하였다.

Fermented soybeans by Rhizopus oligosporus reduce femoral bone loss in ovariectomized rats

  • Yoo, Hyun-Wook;Chang, Moon-Jeong;Kim, Sun-Hee
    • Nutrition Research and Practice
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    • 제8권5호
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    • pp.539-543
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    • 2014
  • BACKGROUND/OBJECTIVES: Soy isoflavones are structurally similar to estrogen and bind to estrogen receptors, suggesting that they exhibit estrogenic activities; therefore, they are referred to as phytoestrogens. Fermentation may affect the bioavailability of isoflavones altering soy isoflavone glycosides in the form of aglycones. Thus, this study investigated the effects of fermented soybeans by Rhizopus oligosporus on bone metabolism in both young rats as a pilot test and in ovariectomized (ovx) old rats as a model of menopause. MATERIALS/METHODS: In the pilot test, a total of 24 seven-week-old female Sprague-Dawley (SD) rats were fed one of three diets for a period of four weeks: casein, unfermented soybean product, or fermented soybean product by R. oligosporus. In the ovx rat model, 20-week-old SD rats weighing 260-290 g underwent either sham-operation (n = 10) or bilateral ovariectomy (n = 30) and were then fed the AIN-93M diet for one week. Thereafter, rats were fed sham-casein, ovx-casein, ovx-soybean, or ovx-fermented soybean diet for five weeks. After decapitation, femoral bones were isolated and preserved in 9% formalin for assessment of bone mineral density (BMD), bone mineral content (BMC), and bone-breaking strength (BBS). RESULTS: Ovx rats showed significantly increased weight gain and decreased uterine wet weight. Of particular interest, ovx rats fed fermented soybeans showed increased uterine wet weights compared to control rats. Fermented soybean diet caused a significant increase in plasma 17-${\beta}$ estradiol concentrations in young rats, and 17-${\beta}$ estradiol levels were enhanced in ovx rats to match those of sham-operated ones. Significantly lower femoral BMD and BMC were observed in ovx rats compared to sham-operated controls, whereas bone areas did not differ statistically among the groups. In addition, BBS tended to be increased in ovx rats fed soybeans and fermented soybeans. CONCLUSIONS: Supplementation of fermented soybeans could have preventive and therapeutic effects against osteoporosis in postmenopausal women.

Effect of ${\beta}$-Glucosidase as a Feed Supplementary on the Growth Performance, Digestive Enzymes and Physiology of Broilers

  • Qian, L.C.;Sun, J.Y.
    • Asian-Australasian Journal of Animal Sciences
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    • 제22권2호
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    • pp.260-266
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    • 2009
  • The effects of ${\beta}$-glucosidase on the overall growth performance and a set of physiological parameters of broilers were investigated. 240 male, one-day old Avine broiler chickswere randomly allocated to four treatment groups and fed with a corn-soybean meal supplemented with 0% (control), 0.2%, 0.4% and 0.6% ${\beta}$-glucosidase. The 0.2% ${\beta}$-glucosidase group, but not the 0.4% and 0.6% ${\beta}$-glucosidase groups, showed a significantly increased average daily weight gain (p<0.05) over that of the control. All three ${\beta}$-glucosidase feed groups showed significantly higher feed conversion ratios than the control group (p<0.05). Feed supplementation of 0.2% ${\beta}$-glucosidase significantly raised the contents of serum isoflavone aglycones as shown by decreases of genistin and daizin (p<0.01) and an increase of daidzein (p<0.01). The 0.2% ${\beta}$-glucosidase feeding significantly increased the intestinal amylase activity while it had little effect on lipase and trypsin activities (p>0.05). 0.2% ${\beta}$-glucosidase feeding also significant elevated the levels of highdensity lipoprotein cholesterol and malate dehydrogenase while lowering the level of low-density lipoprotein cholesterol (LDL-C). Finally, ${\beta}$-glucosidase improved the anti-oxidative activities of the animals; the 0.2% ${\beta}$-glucosidase feed group had higher activities of superoxide dismutase (p<0.05), glutathione peroxidase and glutathione reductase in the liver (p<0.05), and malondialdehyde level in the serum (p<0.05).

송이버섯 균사체를 이용한 대두 고체발효 중 영양성분과 식물성 에스트로겐 성분의 생물전환 (Bioconversion of nutrient and phytoestrogen constituents during the solid-state fermentation of soybeans by mycelia of Tricholoma matsutake)

  • 이희율;조계만;주옥수
    • 한국식품저장유통학회지
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    • 제30권6호
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    • pp.1012-1028
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    • 2023
  • 본 연구에서는 송이버섯 균사체를 이용한 대두의 고체 발효 기간 중 β-glucosidase 활성, 유리아미노산, 지방산, 이소플라본 함량 및 항산화 활성과 소화효소 저해 활성 변화에 대해서 확인하였다. 발효 기간 중 β-glucosidase 활성은 증가하여 발효 9일 38.89 unit/g으로 최대치를 보였으며, 이에 상응하여 aglycones 함량이 발효 9일 최대 함량을 보였다(0일: 163.03 ㎍/g → 9일: 1,074.28 ㎍/g). 특히 daidzein과 genistein 함량은 발효 9일 43.90배(511.49 mg/g)와 37.04배(460.86 mg/g) 증가를 보였다. 총지방산 함량과 총유리아미노산 함량은 발효 12일 130.85 mg/g 및 80.47 mg/g으로 가장 높았다. 특히 유리아미노산 중 필수아미노산인 발효 0일과 비교해 발효 12일 BCAA는 36.82배(0.34 → 12.52 mg/g) 증가하였으며, 감칠맛(aspartic acid 및 glutamic acid)과 단맛(serine, glycine, alanine, threonine, valine 및 lysine)과 관련된 성분의 합은 8.73 배(4.23 → 36.91 mg/g) 증가하였다. TP 및 TF 함량은 발효 기간에 따라 증가하여 발효 12일 2.7배(15.09 GAE mg/g) 및 4.4배(1.58 RE mg/g) 증가를 보였다. 항산화 활성 성분의 경향과 마찬가지로 DPPH, ABTS 및 hydroxyl 라디칼 소거 활성 또한 발효 12일 가장 높은 함량을 보였으며, ABTS(82.08%) > DPPH(71.98%) > hydroxyl(52.02%) 순으로 높게 확인되었다. α-Glucosidase 및 췌장 lipase 저해 활성은 폴리페놀 화합물에 영향으로 발효 12일 83.49%와 77.73%로 발효 기간 중 가장 높은 저해 활성을 나타내었다. 본 연구 결과, 9일에서 12일 발효 시 발효물의 영양 성분, 항산화 물질, 항산화 활성 및 소화효소 저해 활성이 우수하였으며, 송이버섯 균사체를 이용한 대두 발효물이 기능성 식품 또는 기능성 식품 원료로 활용성이 높을 것으로 판단된다.