Korean Journal of Food Science and Technology (한국식품과학회지)

Korean Society of Food Science and Technology (한국식품과학회)
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Physicochemical and functional properties of Gochujang with fermented tomato products

토마토 발효액을 이용한 고추장의 이화학적 및 기능적 특성

  • 임은정 ((재)발효미생물산업진흥원) ;
  • 조승화 ((재)발효미생물산업진흥원) ;
  • 정도연 ((재)발효미생물산업진흥원)
  • Received : 2020.01.20
  • Accepted : 2020.04.07
  • Published : 2020.04.30
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Abstract

This study was conducted to investigate the physicochemical and functional properties of Gochujang in the presence of fermented tomato products. To accomplish this aim, tomatoes were fermented using Bacillus subtilis SRCM100333, and the products were used with Gochujang. As a control, non-fermented tomato liquid was used with Gochujang. There were no significant differences in quality characteristics except for amino nitrogen in Gochujang. The functional properties of tomato liquid (TL), fermented tomato product (FTP), Gochujang made with tomato liquid (TLG), and Gochujang made with fermented tomato products (FTG) were investigated. There were significant differences in the pancreatic lipase inhibition (PLI) and superoxide scavenging activity between FTP (87% and 28%, respectively) and TL (77% and 14%, respectively). Nitric oxide scavenging activity of FTG (52%) was higher than that of other groups (TL, FTP, and TLG). Overall, the results indicate that the fermented tomato can be used to develop functional Gochujang.

Bacillus subtilis SRCM100333로 발효한 토마토 발효액을 제조하고, 이를 사용하여 제조한 고추장의 이화학적 및 기능성 특성을 비교하였다. 대조구로는 토마토 발효액 대신 발효하지 않은 토마토 액을 첨가하였다. 2종의 토마토 고추장 시료는 수분함량 44-45%, 염도 6.2%, pH 4.7, 적정 산도 2.8 mL/g, 색도(L 값) 22-23을 나타냈으며 아미노산성 질소를 제외한 모든 항목에서 유의적인 차이가 없는 경향을 보였다. 토마토 착즙액과 발효액 및 이를 첨가한 고추장의 기능성 분석결과, α-glucosidase 저해(AGI) 활성, pancreatic lipase 저해(PLI) 활성, 항산화, 지방세포분화 억제활성을 보였으며 모든 시료에서 세포독성은 나타나지 않았다. 토마토 발효액은 토마토 착즙액에 비하여 더 높은 PLI 활성과 SO 소거능을 보였다. 토마토 발효액을 사용하여 고추장 제조 시 52%의 NO 생성 억제능을 보였으나, 대조구인 토마토 착즙액 고추장에는 NO 생성 억제능이 확인되지 않았다. 발효하지 않은 토마토 착즙액을 이용하여 고추장을 제조한 경우와 비교 하였을 때, 토마토 발효액을 첨가하여 제조한 고추장은 고유의 붉은색은 유지하면서 강한 매운맛은 감소하였으며 다양한 기능성이 향상된 것을 확인할 수 있었다. 이러한 연구결과를 토대로 다양한 소비자들의 기호를 충족시킬 수 있는 고추장 개발과 같은 추가적인 연구가 지속되기를 바란다.

Keywords

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