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초록

본 연구는 미나리의 최적 추출 조건을 확립하기 위해 다양한 에탄올추출 농도가 미나리의 영양학적 성분 변화에 미치는 정도를 관찰함으로써 진행되었다. 본 실험에서는 열수추출물, 에탄올추출물(50%, 80%, 95%)로 추출 농도를 다르게 하여 미나리를 추출하였다. 수율을 측정한 결과 50% 에탄올 추출물에서 44.67%로 가장 높게 나타났다. 일반성분 분석 결과, 50% 에탄올추출물에서 단백질 함량이 6.76%, 탄수화물 함량이 19.60%로 가장 높게 나타났다. 지방 함량은 열수추출물과 비교하여 에탄올추출물에서 유의적으로 증가하였으며(P<0.05), 에탄올추출 농도에 따라 유의차가 있었다 (P<0.05). 식이섬유를 측정한 결과, 50% 에탄올추출물을 제외한 에탄올추출물(80%, 95%)에서 열수추출물과 유의차가 나타났으며(P<0.05), 두 실험군 간에도 유의적 차이가 있었다(P<0.05). 총당 함량을 측정한 결과, 열수추출물에 대해 에탄올추출물은 통계적 유의차가 있었고(P<0.05), 에탄올 농도에 따라서도 유의차를 나타냈으며(P<0.05), 95% 에탄올추출 시 5.35%로 가장 낮게 측정되었다. 비타민 A 함량은 열수추출물에 대해 에탄올추출물이 유의하게 증가하였으며(P<0.05), 에탄올추출 농도에 따라 유의차가 있었다(P<0.05). 무기성분 측정 결과, 나트륨, 칼슘, 철의 경우 열수추출물에 대해 에탄올추출물이 유의하게 감소하였고(P<0.05), 에탄올추출 농도가 증가함에 따라 유의적으로 감소하였다(P<0.05). 따라서 에탄올추출 방법을 사용 목적에 따라 적용함으로써 미나리를 이용한 우수한 가공식품 개발 가능성과 이용률 향상에 도움이 될 것으로 판단된다.

Abstract

This study evaluated the nutritional compositions of dropwort (Oenanthe javanica) extracts depending on the ethanol concentrations. Extractions were performed with hot water, 50% ethanol, 80% ethanol, and 95% ethanol for 4 hours. Changes in yield, as well as total carbohydrate, crude protein, crude fat, total dietary fiber, free sugar, and mineral (Na, Fe, and Ca) contents were investigated. The highest extraction yield of ethanol extracts was 44.67% in 50% ethanol extract of dropwort. Crude protein content reached a maximum of 6.70% while carbohydrate content was highest at 19.6%, in 50% ethanol extract of dropwort. Crude fat content irregularly increased according to ethanol concentration as compared with hot water extract. Total dietary fiber content decreased in ethanol extract, but these changes were not concentration-related. Total sugar contents were highest in hot water and 80% ethanol extracts. Vitamin A content of ethanol extract was higher than that of hot water extract. Mineral (Na, Ca, and Fe) contents were significantly reduced in ethanol extract according to concentration of ethanol, whereas mineral contents were higher in ethanol extract than in hot water extract. Based on this study, ethanol extract of dropwort is more efficient for development of desirable processed foods.

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