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Analysis of quality characteristics of sugar-soaked raspberry according to storage period

저장 기간에 따른 산딸기 당 침지액의 품질특성 분석

  • Choi, Seok-Yong (Division of Applied Life Sciences, Gyeongsang National University (BK21 four)) ;
  • Gu, Suyeon (Institute of Animal Medicine, Gyeongsang National University) ;
  • Ryu, Chung-Ho (Department of Food Science and Technology, and Institute of Agriculture and Life Science. Gyeongsang National University) ;
  • Kim, Hyun-Jin (Division of Applied Life Sciences, Gyeongsang National University (BK21 four))
  • Received : 2021.11.16
  • Accepted : 2022.01.17
  • Published : 2022.03.31

Abstract

Volatile and non-volatile metabolite profiles of sugar-immersed raspberry liquid during different storage periods were analyzed and comparative analysis with their general characteristics, antioxidant activity, and sensory quality was evaluated to better understand the effect of the storage period on the quality of ugar-immersed raspberry liquid. During storage, a browning reaction occurred, resulting in a change in color and the production of volatile compounds. At the beginning of storage, sucrose was completely decomposed into fructose and glucose, and the sweetness was rapidly reduced, but the increase in succinic acid increased the sour taste. Most volatile compounds increased with an increase of the storage period, and especially, the contents of citronellol, octanoic acid, and hexanoic acid, which are known as antioxidants, showed the highest content in 10 day-sample, showing the highest antioxidant activity at this time. Although a further study on bacterial profiles and browning reaction during the storage will be needed, the results of this study showed that the quality of sugar-soaked raspberry extract was significantly affected by the storage period and can be used as basic data for commercialization of ugar-immersed raspberry liquid.

저장기간에 따른 산딸기 당 침지액의 일반성분, 항산화 활성, 관능평가 및 대사물질을 비교 분석하고 이들의 상관관계를 분석한 결과, 저장기간의 증가에 따른 색의 변화는 주로 갈변반응 때문인 것으로 사료되며 이 과정에서 향기성분들도 새롭게 생겨나는 것으로 확인되었다. 맛과의 상관성을 분석한 결과, 저장 초기에 sucrose가 완전히 fructose와 glucose로 분해되어 단맛이 급속히 감소되었으나 저장기간의 증가에 따른 차이는 없었으며 저장기간의 증가에 따라 succinic acid 함량 증가로 인해 신맛이 증가한 것으로 확인되었다. 휘발성 향기성분인 경우 linalool과 hydroxybenzaldehyde을 제외한 대부분의 성분들이 저장기간이 증가할수록 증가하는 경향을 보였다. 특히 항산화물질로 알려진 citronellol, octanoic acid, hexanoic acid 등의 함량은 저장 10일에 가장 높은 함량을 보였으며 이때 항산화 활성도 가장 높은 것으로 확인되었다. 본 연구에서 산딸기 당 침지액의 저장 중 미생물의 변화 및 갈변반응에 대한 연구를 수행하지 못하였지만 본 연구결과들은 산딸기 당 침지액의 품질이 저장기간에 따라 크게 영향을 받는 것을 확인 할 수 있었으며 산딸기 당 침지액의 제품화 연구에 기초자료로 사용될 수 있을 것으로 사료된다.

Keywords

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