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오디 식초의 품질 특성 및 생리활성

Quality characteristics and physiological activities of mulberry (Morus alba) vinegar

  • 투고 : 2023.04.06
  • 심사 : 2023.06.28
  • 발행 : 2023.08.30

초록

본 연구에서는 고부가가치 오디 식초를 개발하기 위하여 식품 미생물인 효모와 초산균을 사용하여 오디를 발효하고, 품질의 표준화는 물론 우수한 생리기능성을 함께 갖춘 식초를 제조하고자 하였다. 오디의 최적 발효균주를 선발하기 위하여 균주를 달리하여 발효를 진행하고 품질 특성 및 생리활성을 측정하였으며, 오디 발효 시 알코올과 초산 생성능이 뛰어난 S. cerevisiae SRCM101756과 A. pasteurianus SRCM102419를 발효용 균주로 최종 선발하였다. 제조된 오디 와인에 선발된 초산균을 사용하여 오디 식초를 제조하고 품질 특성 및 생리활성을 분석하였다. 오디 식초는 발효 9일 차에 pH 2.98, 총산도 4.70%로 측정되었고, 𝛼-glucosidase 저해 활성은 100배 희석 시에 발효 전 13.22%에서 발효 후 19.19%로, 50배 희석 시에 발효 전 42.35%에서 발효 후 46.11%로 활성이 증가하는 것을 확인하였다. Angiotensin-converting enzyme 저해 활성을 측정한 결과, 25배 희석 시에 발효 전 44.82%에서 발효 후 63.88%로, 50배 희석 시에 발효 전 30.10%에서 발효 후 37.24%로 angiotensin-converting enzyme 저해 활성이 증가하였고, 발효 전에 비하여 발효 후 pancreatic lipase 저해 활성도 유의적으로 증가한 것으로 나타났다. 50배 희석 시료에서 발효 전 30.01%에서 발효 후 40.25%로, 25배 시료에서는 발효 전 42.51%에서 발효 후 55.33%로 그 활성이 증가하는 것을 확인하였다. 이와 같은 결과를 토대로 오디식초는 식품미생물을 이용한 발효를 통하여 생리활성이 증진된 고부가가치 식품이며, 향후 다양한 소재로도 활용될 수 있을 것으로 판단된다.

This study aimed to develop high value-added mulberry (Morus alba) vinegar by fermenting mulberry with yeast and acetic acid bacteria, for using it in various foods. To select the optimal strain for mulberry fermentation, different strains were tested and Saccharomyces cerevisiae SRCM101756 and Acetobacter pasteurianus SRCM102419, exhibiting excellent alcohol and acetic acid production ability during mulberry fermentation, were selected for fermentation. Mulberry vinegar was prepared using mulberry wine and the selected acetic acid bacteria, and the physicochemical properties and physiological effects were measured. The pH was 2.98 and total acidity was 4.70% by day 9 of fermentation, establishing the possibility of developing them into vinegars for industrial use. The angiotensin-glucosidase inhibition activity of mulberry vinegar increased from 13.22% to 19.19% in the 100-fold dilution, and from 42.35% to 46.11% in the 50-fold dilution, from before fermentation to after fermentation, respectively. The angiotensin-converting enzyme inhibition activity of mulberry vinegar was found to significantly increase from 44.82% before fermentation to 63.88% after fermentation in the 25-fold dilution. Moreover, a significant increase in pancreatic lipase inhibition activity after fermentation was observed. Thus, mulberry vinegar can be used as a functional material in vinegar and other foods.

키워드

과제정보

This research was supported by Local Strategic Food Industry Promote Program, Ministry of Agriculture, Food and Rural Affairs, Republic of Korea (MIFI 2022-01).

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