Korean Journal of Food Science and Technology (한국식품과학회지)

Korean Society of Food Science and Technology (한국식품과학회)
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Quality characteristics and physiological activities of strawberry vinegars using Acetobacter pasteurianus SRCM60009

Acetobacter pasteurianus SRCM60009로 발효한 딸기 식초의 품질특성 및 생리활성

  • 임은정 ((재)발효미생물산업진흥원) ;
  • 조승화 ((재)발효미생물산업진흥원) ;
  • 강현진 ((재)발효미생물산업진흥원) ;
  • 박슬기 ((재)발효미생물산업진흥원) ;
  • 정도연 ((재)발효미생물산업진흥원)
  • Received : 2021.09.17
  • Accepted : 2021.11.17
  • Published : 2021.12.31
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Abstract

Strawberries fermented with Acetobacter pasteurianus SRCM60009 were prepared, and the quality characteristics and physiological activity were measured. As the fermentation period increased, viable cell counts increased, pH decreased, and total acidity increased from 1.09% to 4.20%. The organic acid content of strawberry through acetic acid fermentation was confirmed in the following order: acetic acid, succinic acid, citric acid, and lactic acid. Measurement of α-glucosidase and pancreatic lipase inhibitory activities and angiotensin converting enzyme inhibitory activity showed significantly increased physiological activity owing to fermentation. The use of strawberry vinegar as a functional material was confirmed by measuring the anti-diabetic, anti-obesity, and anti-hypertensive physiological activities through acetic acid fermentation of strawberry. Thus, fermented strawberry vinegar can be used as a functional material in vinegar and other foods.

고부가가치 딸기 식초를 개발하고 이를 다양한 식품에 활용하기 위해 딸기 발효에 적합한 초산균을 선발하여 딸기 식초를 제조하고 품질 특성 및 생리활성을 분석하였다. A. pasteurianus 균주를 이용하여 딸기 식초를 제조하여 균주별 발효 특성을 조사한 결과 SRCM 60009 균주로 발효 후 산도가 가장 높은 결과를 보여 A. pasteurianus SRCM 60009 균주가 딸기 식초용 발효균주로 최종 선발되었다. SRCM 60009 균주로 제조한 딸기 발효식초의 품질특성은 발효 9일차에 pH 2.86, 산도 4.20%, 생균수 8.56 log CFU/mL를 나타내었다. 발효기간에 따라 딸기 식초의 유리당은 감소하는 경향을 보였고, 유기산은 증가하는 경향을 나타내었다. 딸기 식초의 생리활성은 α-glucosidase 저해(AGI) 활성, pancreatic lipase 저해(PLI) 활성, angiotensin converting enzyme I (ACE) 저해활성을 분석하였다. 딸기 식초는 65.13%의 AGI 활성을 보였으나, 딸기 착즙액을 발효하지 않은 대조구에서는 55.18%의 활성을 나타내었다. PLI 활성을 확인한 결과 딸기 식초는 75.40%, 대조구는 35.79%의 활성을 보였고, ACE 저해 활성은 딸기식초는 70.58%, 대조구는 46.40%의 활성을 보였으며, 그 결과는 모두 유의차가 있는 것으로 확인되었다. 이와 같이 딸기를 발효하여 식초로 이용함으로써 딸기를 발효하지 않고 섭취하는 것에 보다 다양한 기능성을 확인할 수 있었으며 동시에 전통 발효식품인 식초에 딸기의 맛과 향이 더해진 딸기 식초를 제조하였다. 이를 토대로 향후 다양한 소비자들의 기호를 충족시킬 수 있는 발효식초 및 발효식초를 활용한 응용제품의 개발이 필요하며, 이에 따른 추가적인 연구가 지속되어야 할 것 으로 사료된다.

Keywords

Acknowledgement

본 연구는 농림축산식품부의 지역전략식품산업육성사업(2020-01)의 지원에 의해 수행되었습니다.

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