Food Science and Preservation (한국식품저장유통학회지)

The Korean Society of Food Preservation (한국식품저장유통학회)
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Effects of Heating Temperatures and Times on Anthocyanin Pigments in Grape Juice

열처리 조건이 포도 주스내 anthocyanin 색소에 미치는 영향

  • Published : 2004.09.01
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Abstract

The influence of temperature and heating time on the stability of anthocyanin pigments in grape juice were investigated. There was no significant differences in soluble solids, acidity and pH of grape juice under various temperature and heating time. Residual total anthocyanin of grape juice was decreased by heating temperature over 100$^{\circ}C$ for 1 min. Delphinidin-3-glucoside and cyanidin-3-glucoside were rapidly decreased by heating treatment, but petunidin-3-glucoside and malvidin-3-glucoside were more stable than others. These results suggests that the optimum quality of grape juice was heated at 90 $^{\circ}C$ for 1 min.

본 실험은 포도주스의 가공 공정중 열처리 조건이 anthocyanin색소 각각에 미치는 영향을 검토함으로서 anthocyanin 색소의 파괴가 최소화 되는 열처리 조건을 결정하는 기초자료를얻고자 실시하였다 Anthocyanin 색소 동정을 위한 분석결과 딸기의 주요 적색소는 pelargonidin-3-glucoside이며, 미국산 포도의 과피 및 주스의 주요 적색소는 delphinidin-3-glucoside와 cyanidin-3-glucoside이며, 유색미의 주요 적색소는 cyanidin-3-glucoside로 나타났다. 총 anthocyanin 함량 변화는 30초간 열처리한 처리구가 비열처리구에 비하여 100$^{\circ}C$까지 변화가 없었으며, 1분간 열처리한 처리구는 비열처리구에 비하여90$^{\circ}C$ 까지는 변화가 없었으며, l00$^{\circ}C$, 110$^{\circ}C$에서 각각 3.5$\%$, 9.3$\%$의 감소를 나타냈다. 열처리에 따른 anthocyanin 색소의 변화를 실험한 결과 1분간 열처리 하였을 경우 delphinidin-3-glucoside와 cyanidin-3-glucoside의 경우 90$^{\circ}C$까지 변화가 없었으며, 100$^{\circ}C$부터 급격히 감소하였다. Petunidin-3-glucoside와 malvidin-3-glucoside의 경우 100$^{\circ}C$까지 변화가 없었으며, 110$^{\circ}C$에서 3.5$\%$, 2.7$\%$로 비교적 열에 안정한 것으로 나타났다. 2분간 열처리시 delphinidin-3-glucoside와 cyanidin-3-glucoside의 경우 90$^{\circ}C$까지 3.2$\%$, 5.3$\%$와 1.9$\%$, 4.3$\%$로 감소하였으나, 100$^{\circ}C$부터 12.4$\%$, 13.2$\%$와 9.1$\%$, 11.8$\%$로 급격히 감소하였다. Petunidin-3-glucoside와 malvidin-3-glucoside의 경우 110$^{\circ}C$ 까지 4.8$\%$, 5.2$\%$의 감소를 나타내며 다른 anthocyanin 색소에 비하여 비교적 열에 안정한 것으로 나타났다. 따라서 포도주스 제조시 열처리 조건을 90$^{\circ}C$에서 1분간 살균하는 것이 anthocyanin 파괴를 최소화하여 고품질 포도 주스를 생산하는데 최적의 가공조건인 것으로 사료된다.

Keywords

References

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