Food Science and Preservation (한국식품저장유통학회지)

The Korean Society of Food Preservation (한국식품저장유통학회)
권호 표지

Biological Activity of Fresh Juice of Wild-Garlic, Allium victorialis L.

산마늘 생즙의 생리활성

  • Received : 2010.03.30
  • Accepted : 2010.07.23
  • Published : 2010.08.30
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Abstract

Wild-garlic (Allium victorialis L.) is a perennial plant found in worldwide and has been considered as a favorite vegetable due to its particular smell and taste. However, the study of biological activity of wild-garlic and the development of processed food are in rudimentary. In this study, we evaluated several biological activities, including antioxidant, antimicrobial, and inhibitory activities against human thrombin, $\alpha$-amylase and $\alpha$-glucosidase, of Ulrung wild-garlic. Analysis of the composition showed that Ulrung wild-garlic is nutritive although it is perishable. The color of fresh juice was stably maintained during 10 days-storage at $4^{\circ}C$, but rapidly discolored by heat treatment at $70^{\circ}C$ for 1 h. During heat treatment, the contents of total sugar and total polyphenol were decreased to 75% and 50%, respectively, and acidity was increased from 0.069% to 0.111%. In a while, the brix, reducing sugar, and total flavonoids showed minor changes. The fresh juice showed strong DPPH scavenging activity, reducing power and antibacterial and antifungal activity, but the heat-treated juice lost the antioxidant and antimicrobial activities. The inhibitory activities against human thrombin and $\alpha$-amylase and $\alpha$-glucosidase was negligible in both fresh juice and heat-treated juice. These results suggested that the antioxidant and antimicrobial components in wild-garlic are heat-liable and volatile. Based on our results, we propose non-heat treatment products for processed wild-garlic, for example, fresh juice-added beverage or fermented liquors using wild-garlic.

본 연구에서는 고급 산나물로 수요가 증가되고 있는 울릉도 산마늘의 생리활성을 확인하고, 이를 이용한 가공식품 개발을 위해 산마늘 생즙 및 열처리 생즙의 이화학적인 특성과 다양한 생리활성을 조사하였다. 산마늘은 우수한 영양성분을 가지며, 산마늘 생즙은 $4^{\circ}C$ 저장시 10일 이상 색차변화 없이 안정하게 유지되었다. 그러나 산마늘 생즙의 가열 처리시에는 brix, 환원당, total flavonoid의 변화는 미미한 반면, 총당은 25%, total polyphenol은 55% 감소하였으며, pH 감소와 함께 산도가 2배 증가되었다. 산마늘 생즙은 우수한 DPPH 소거능과 환원력을 나타내며 강력한 항균력을 나타내었으나, 가열처리된 산마늘 생즙은 미약한 환원력과 항균력을 나타내었다. 무처리 및 가열처리된 산마늘 생즙은 항혈전 활성과 $\alpha$-amylase 및 $\alpha$-glucosidase 저해활성은 매우 미미하였다. 본 연구결과는 산마늘이 우수한 항산화력 및 항균력을 가지며, 관련 활성성분은 휘발성, 또는 열에 약한 성분으로 추측되었다. 따라서 산마늘을 이용한 가공식품 개발은 비열 처리공정의 제품으로 제안한다.

Keywords

References

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