Journal of Food Hygiene and Safety (한국식품위생안전성학회지)

The Korean Society of Food Hygiene and Safety (한국식품위생안전성학회)
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The Electron Donating Ability, Nitrite Scavenging Ability and NDMA Formation Effect of Solvent Extracts from Yuza (Citrus junos SIEB ex TANAKA)

유자 용매추출물의 전자 공여능, 아질산염 소거능 및 NDMA 생성 억제능

  • Lee Soo-Jung (Department of Food Science and Nutrition, Gyeongsang National University) ;
  • Choi Sun-Young (Department of Food Science and Nutrition, Gyeongsang National University) ;
  • Shin Jung-Hye (Department of Hotel Curinary & Bakery, Changshin College) ;
  • Seo Jong-Kwon (Division of Food Science, Jinju International University) ;
  • Lim Hyun-Cheol (Yeongnam Food-service Consulting Co.,) ;
  • Sung Nak-Ju (Department of Food Science and Nutrition, Gyeongsang National University)
  • Published : 2005.12.01
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Abstract

Methanol, ether, ethylacetate and water extracts from flesh and peel of yuna (Citrus junos) were investigated to analyze their ability of electron donating, nitrite scavenging and nitrosodimethylamine (NDMA) formation in model system. The electron donating ability of ynza flesh extract, when it added at 10 mg/ml or over, were more an $50\%$, except ether extract. The high electron donating ability ($99.2{\pm}0.37\%$) was observed in the methanol extract and its effect was similar to BHA and ascorbic acid, when 40 mg/ml of methanol extract was added in reaction solution. Nitrite scavenging ability of all extracts ken yuza was increased in proportion to sample concentration and more than $40\%$ when 1 mg/ml sample was added, under pH 1.2. Also nitrite scavenging ability was higher in peel extracts than flesh extracts of yuza. Inhibition ratio of NDMA formation from flesh methanol extract of yuza was $31.7{\pm}1.25\%$, when 40 mg/ml added under pH 1.2. In all samples, inhibition effects were lower than $20\%$, at pH 4.2 and 6.0.

유자를 과육과 과피로 분리하여 methanol, ether, ethylacetate 및 물로 추출하며 전자 공여능, 아질산염 소거능 및 NDMA생성에 미치는 영향을 검색하였다. 유자 과육 추출물의 경우 10 mg/ml이상 첨가시 ether추출물을 제외한 모든 실험구에서 $50\%$이상의 전자 공여능을 나타내었다. 과피 메탄올 추출물을 40 mg/ml 첨가시에는 BHA 및 ascorbic acid의 효능과 유사한 수준인 $99.2{\pm}0.37\%$의 전자 공여능이 나타났다. pH 1.2에서 아질산염 소거작용은 1mg/ml 첨가시 $40\%$ 이상의 소거능을 보였으며 시료량이 증가할수록 상승하였다. 또한 과육보다는 과피에서 아질산염 소거능이 다소 우수한 것으로 나타났다. 유자 과육 추출물의 NDMA생성 억제 효과는 메탄을 추출물을 pH 1.2의 반응 용액에 40 mg/ml 첨가시 $31.7{\pm}1.25\%$로 가장 높게 나타났다. pH 4.2 및 6.0의 반응 조건에서는 모든 시료 첨가구에서 $20\%$미만의 억제 효과가 있었다.

Keywords

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