Food Science and Preservation (한국식품저장유통학회지)

The Korean Society of Food Preservation (한국식품저장유통학회)
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Antibrowning Effect of Licorice (Glycyrrhiza glabra) Extracts on Chopped Galic

감초추출물을 이용한 다진 마늘의 갈변 저해 효과

  • Published : 2010.02.27
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Abstract

Chemical methods using browning inhibitors have been used to control the browning of chopped garlic. However, consumer demand for natural products is increasing, and we therefore investigated the antibrowning effect of natural licorice root extract on chopped garlic. We used a combination of licorice extract and citric acid. Chopped garlic was exposed to citric acid and licorice extract at various levels and L values were measured during storage at $10^{\circ}C$. Licorice extract was effective as an initial antibrowning, and a mixture of licorice extract and citric acid was effective in inhibition of browning during storage. The effective mixing ratio of licorice extract and citric acid was 5:5 and 2:8. This indicates that licorice extract and citric acid synergistically act to inhibit browning of chopped garlic. Licorice extracts with higher levels of glycyrrhizin were more effective as antibrowning agents for chopped garlic.

다진 마늘의 제조 중 발생하는 효소적 갈변을 막기 위해 산업적으로 적용되는 방법은 주로 화학적인 갈변저해제를 이용하는 경우가 다수이나, 최근 소비자의 천연물에 대한 수요 증대를 감안하여 천연물 유래의 갈변저해제를 탐색할 필요가 있다. 따라서 본 연구에서는 천연물 유래의 갈변저해제 중 효과적으로 나타난 감초 추출물의 갈변저해 효과를 조사하였다. 또 기존 다진 마늘의 갈변저해에 효과적인 것으로 알려져 있는 구연산과의 병용 효과를 동시에 조사하여 효율적인 응용이 가능하도록 하였다. 다진 마늘 제조 시 구연산과 감초추출물을 다양한 조성비로 적용하고 냉장저장 중 다진 마늘의 색도를 측정하여 L값의 변화를 중심으로 갈변 저해 효과를 조사하였다. 그 결과 저장 초기에는 감초추출물 단독으로도 갈변저해 효과가 있었으나 저장 후기로 갈수록 감초추출물과 구연산을 혼합한 조성물이 매우 효과적으로 갈변을 저해함을 알 수 있었다. 천연물인 감초추출물은 구연산과 상승작용을 일으켜 갈변을 효과적으로 저해하는 것으로 추측된다. 또한 감초추출물과 구연산의 혼합비를 조정하여 실험한 결과에 따르면, 감초추출물:구연산의 혼합비가 2:8 내지 5:5일 때 효과적으로 갈변을 저해하며, 특히 감초추출물:구연산의 혼합비가 2:8인 경우 가장 뛰어난 갈변 저해 효과를 나타냄을 알 수 있었다. 이 경우 구연산을 단독으로 처리한 경우와 동등한 수준으로 뛰어난 갈변 저해 효과를 나타낼 뿐만 아니라, 구연산 단독 처리시의 문제점인 신맛 등 관능적 품질 저하 문제를 해결할 수 있을 것으로 판단된다.

Keywords

References

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