• Korean Journal of Food Science and Technology
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• v.45 no.3
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• pp.299-304
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• 2013

The major hydrophilic bioactive compounds (chlorogenic acid, caffeine, total phenolics, and flavonoids) and the antioxidant capacity in a single size were evaluated for regular coffee varieties commercially available in Korea. The content of total phenols (63.83-110.12 mg gallic acid equivalents) and flavonoids (35.27-69.27 mg catechin equivalents) were spectrophotometrically determined, and the content of chlorogenic acid (5.17-69.78 mg) and caffeine (74.38-146.32 mg) were determined using HPLC-UV. All varieties of regular coffee studied showed antioxidant potential (88.78-487.52 mg trolox equivalents/serving size), which was conferred by their concentrations of phenolic compounds, caffeine and chlorogenic acid. There were significant (p<0.01) correlations between the total phenolics ($r^2$=0.732) and flavonoids ($r^2$=0.8705) and the antioxidant capacity, suggesting that these components were likely a significant contributor to the antioxidant capacity of commercial regular coffee brews.

• Journal of Mushroom
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• v.9 no.3
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• pp.116-122
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• 2011

The mushroom Agrocybe aegerita was analyzed to evaluate the nutritional value of this potential food and to enhance the cultivation and consumption. Among the nutritional compositions of Agrocybe aegerita, contents of crude proteins, crude fats and ashes were 38.3%, 3.0% and 8.2% respectively. The contents of potassium and phosphorus were higher than that of other minerals. Total phenolics contents were $65.2{\mu}g/m{\ell}$ and $46.0{\mu}g/m{\ell}$ in water extract and ethanol extract, respectively. Total flavonoids were estimated as $12.5{\mu}g/m{\ell}$ contents of water extract and ethanol extract were $7.1{\mu}g/m{\ell}$. Free radical scavenging activity against DPPH of ethanol extract, 79.2% was higher than that of water extract(58.2%). The contents of total phenolics, flavonoids and antioxidant activity by the DPPH scavenging activity of Agrocybe aegerita were higher than those of Pleurotus eryngii and Pleurotus ostreatus. The tyrosinase inhibitory activity showed 63.2% and 65.0% in water extract and ethanol extract, respectively. Angiotensin converting enzyme inhibitory activity of water extract was 78.7% and 75.0% in ethanol extract. In this study, Agrocybe aegerita has abundant essential nutrients and thus is good source of functional health food.

• Food Industry And Nutrition
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• v.9 no.1
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• pp.46-52
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• 2004

최근 생활수준의 향상으로 식생활의 서구화와 식품의 제조 및 가공기술의 발달로 장기저장 식품 및 인스턴트식품의 이용도가 현저히 증가하고 있으며 이를 위한 식품첨가물에 대한 관심도 높아지고 있다. 식문화가 바뀌면서 당뇨병, 고혈압, 동맥 경화증 등의 성인병 질환이 급증하고 (1,2) 이러한 만성병의 증가로 식품과 질병과의 연계성에 관한 관심이 급격히 증가하고 있다. 이러한 경향에 따라 식물성 원료의 생리활성 성분에 대한 관심이 높아지고 국내ㆍ외적으로 생리활성 성분을 함유한 신소재 식물들을 원료로 이용하려는 시도가 많이 이루어지고 있다(3,4). (중략)

• Proceedings of the Korean Society of Organic Agriculture Conference
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• 2009.12a
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• pp.318-318
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• 2009

관행재배 농산물에 대한 유기재배 농산물의 생리활성성분 및 기능성 측면에서의 우수성에 대한 관심이 국제적으로 화두가 되고 있으나 일관성 있는 데이터가 제시되지 못해 논란이 이어지고 있다. 그래서 본 연구에서는 한국인이 일상적으로 섭취하고 있는 고추(녹광)를 대상으로 생산이력이 분명한 관행 및 유기 재배 시료를 이용해 주의 깊게 확립된 분석법을 이용해 유기 및 관행재배 고추의 생리활성성분 함량비교 및 기능성 평가를 행하였다. 그 결과 ascorbic acid, capsaicin, dihydrocapsaicin 및 총 페놀성 화합물의 함량은 녹색 및 적색 고추 모두에 있어 관행보다 유기재배 고추가 유의(p<0.05)하게 더 높은 값을 보였다. 그리고 flavonoid류(apigenin, luteolin, quercetin)의 함량은 녹색과 적색고추 모두 유의차는 인정되지 않았으나 관행보다 유기재배 고추에서 더 높은 경향을 나타냈다. 또 2,2'-azinobis(3-ethylbenzothiazoline-6-sulfonic acid ammonium salt) (ABTS+) radical-scavenging 활성은 녹색고추에 있어서는 유기재배 고추가 관행재배 고추보다 더 높은 경향을 보였으며, 적색고추에 있어서는 유의(p<0.05)하게 높은 활성을 보였다. 고추추출물을 경구투여한 쥐 (Sprague-Dawley, 6주령, men, 180~250 g) 혈장의 동이온 유도산화에 대한 cholesteryl ester hydroperoxide (CE-OOH) 생성 억제능을 평가한 결과, 고추추출물을 경구투여한 쥐가 대조구보다 더 높은 CE-OOH 생성 억제능과 lag time연장 효과가 있음을 알 수 있었으며, 그 효과는 관행재배 고추보다 유기재배 고추에 있어서 더 우수한 것으로 관찰되었고, 녹색고추보다 적색고추에 있어 그 효과가 더 뛰어난 것으로 평가되었다. 이러한 결과는 위에서 분석한 각 시료에 함유된 항산화 성분들의 함량과 관련이 있는 결과라 판단되며, 유기재배 고추가 관행재배 고추보다 유용성분 및 생리활성 측면에서 더 우수함을 시사하는 결과라 사료된다. 그러나 한편으로 본 연구결과는 고추에 국한된 성과라 할 수 있으며, 유기재배 방법 및 다양한 환경조건에 따라 그 결과 또한 다양성을 보일 수 있음에 주의를 기울일 필요가 있다고 판단된다.

• Journal of Mushroom
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• v.18 no.1
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• pp.37-44
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• 2020

The antioxidant activities and β-glucan contents of hot-water extracts of the eggs and fruiting bodies of Phallus indusiatus were investigated using different drying methods, and the amino acid contents as nutritional components of the eggs and fruiting bodies of P. indusiatus were analyzed. DPPH radical scavenging and nitrite scavenging activities of hot-water extracts of the eggs of P. indusiatus obtained after hot-air drying were 59.4% and 15.6%, respectively, at 1 mg/ml concentrations, which showed higher activities than those of freeze dried samples. Total polyphenol and β-glucan contents in hot-air-dried hot-water extracts of the eggs of P. indusiatus were 8.25 mg GAE/g and 45.9%, respectively, which were the highest among all samples. Additionally, 17 amino acids were detected from the hot-water extracts of the eggs and fruiting bodies of P. indusiatus, and the amino acid contents were higher in the eggs than in the fruiting bodies. Cysteine, phenylalanine, and glutamic acid were the most abundant essential and non-essential amino acids in the analyzed extracts. The results of this study showed that the physiological activities of the antioxidants from P. indusiatus, well known as wild edible mushroom, were greater when extracted from the dried samples. Further, the amino acid contents were higher in the egg extracts than in the extracts from the fruiting bodies of P. indusiatus.

• Korean journal of applied entomology
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• v.46 no.2
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• pp.229-234
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• 2007

Pure Bombus ignitus venom samples were submitted to two-dimensional gel electrophoresis. A total of 64 excised spots were analyzed by mass spectrometry. Three main proteins resulted in the identification have not been described in other bee venoms before. Dose-dependence against human carcinoma (Hep3B, BT-20, A549 and AGS) were observed from 1ng/ml to 100ng/ml. Expecially, the treatment of 100ng/ml B. ignitus venoms showed the highest cytotoxicity with 55% against hepatocellular carcinoma (Hep3B). The B. ignitus venoms showed strong antimicrobial activities against Enterococcus faecium and Shigella sonnei, and practically antimicrobial activity against the other microorganisms tested. The minimum inhibitory concentration (MIC) and minimum bactericidal concentration (MBC) of E. faecium and S. sonnei, were 0.256ug/ml, respectively.

• Korean Deer Journal
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• v.9 no.3 s.58
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• pp.206-209
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• 2004

• Journal of Nutrition and Health
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• v.35 no.6
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• pp.681-694
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• 2002

• Korean Deer Journal
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• v.9 no.4 s.59
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• pp.80-83
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• 2004

• Korean Deer Journal
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• v.9 no.2 s.57
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• pp.66-69
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• 2004