Food Engineering Progress (산업식품공학)

Korean Society for Industrial Food Engineering (한국산업식품공학회)
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Functionalities and Properties of Yam (Dioscorea batatas) Extract Depending on Various Water Temperature, Ethanol Ratio, and Extraction Methods

열수 온도, 에탄올 비율, 추출방법에 따른 마(Dioscorea batatas)의 기능성 및 특성 연구

  • Kim, Jae-Yong (Food Processing Research Center, Korean Food Research Institute) ;
  • Kum, Jun-Seok (Food Processing Research Center, Korean Food Research Institute) ;
  • Park, Jong-Dae (Food Processing Research Center, Korean Food Research Institute) ;
  • Sung, Jung-Min (Food Processing Research Center, Korean Food Research Institute) ;
  • Choi, Yun-Sang (Food Processing Research Center, Korean Food Research Institute) ;
  • Choi, Hyun-Wook (Food Processing Research Center, Korean Food Research Institute)
  • 김재용 (한국식품연구원 가공공정연구단) ;
  • 금준석 (한국식품연구원 가공공정연구단) ;
  • 박종대 (한국식품연구원 가공공정연구단) ;
  • 성정민 (한국식품연구원 가공공정연구단) ;
  • 최윤상 (한국식품연구원 가공공정연구단) ;
  • 최현욱 (한국식품연구원 가공공정연구단)
  • Received : 2019.05.21
  • Accepted : 2019.05.24
  • Published : 2019.05.31
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Abstract

The characteristics of extracts and precipitates after extraction at different water temperature (25, 50, 75, 95℃), ethanol ratio (25, 50, 75, 100%), and extraction method (stir, soak, autoclave) of yam powder and raw yam were investigated. The total polyphenol content was the highest in the 50% ethanol extract of yam powder. The DPPH radical scavenging activity was the highest in the 75% ethanol extraction and the crude saponin content was the highest in the 95℃ water extraction. Tyrosinase inhibitory activity was the highest in 95℃ water extraction, low concentration of ethanol extraction, and autoclave extraction. The peak viscosity, trough, and final viscosity of the precipitates increased after ethanol extraction, whereas decreased after the 95℃ water extraction and the autoclave, indicating the destruction of starch granules. This was confirmed by observing the starch granules broken using the SEM. The significance of this study was to investigate the possibility of the use of yam resources as a material, processing product development, skin beauty functional food and cosmetic material.

마 분말과 생 마의 추출 용매(열수 25, 50, 75, 95℃, 에탄올 25, 50, 75 100%) 및 추출 방법(회분법, 침지법)에 따른 추출물과 추출 후 침전물에 대한 특성을 알아보았다. 추출물의 total polyphenol 대부분 생 마 보다는 마 분말에서 더 높게 나타났고 마 분말 50% 에탄올 추출에서 가장 높은 함량을 나타냈다. DPPH 라디칼 제거능은 마 분말과 생 마 모두 75% 에탄올 추출법에서 높은 제거능을 보였고, 가압 가열 추출법은 높은 압력과 온도에 의한 항상화 물질의 파괴로 인해 낮은 제거능을 보였다. 조사포닌 함량은 마 분말과 생 마 모두 95℃ 열수 추출법에서 가장 높은 함량을 나타냈다. 티로시네이즈 활성 억제능에서는 마 분말의 경우는 95℃ 열수 추출법 또는 가압 가열 추출법, 생 마의 경우에는 95℃ 열수 추출법, 25% 에탄올 추출법 또는 가압 가열 추출법으로 추출한 시료가 가장 티로시네이즈의 활성을 억제하는 것으로 나타났다. 침전물의 RVA 호화특성 결과 대부분 추출법에서 peak viscosity, trough, final viscosity 등이 control에 비해 증가하는 결과가 나온 반면 95℃ 열수 추출법과 가압 가열 추출법에서는 전분 그래뉼의 파괴를 SEM을 통하여 확인하였고 그로 인한 viscosity 감소 현상이 나타났다. 그러나 마 분말 75℃ 열수 추출의 경우 전분 그래뉼의 파괴는 SEM에서 관찰되지 않았음에도 viscosity가 감소한 것에 대한 추가 연구도 필요할 것으로 생각된다. 침전물 현탁액의 점도는 마 분말에서 5.82-9.12 cp, 생 마에서 13.88-19.10 cp로 생 마에서 더 높게 나타났으며 이는 생 마의 점액 물질에 의한 결과로 생각되었다. 본 연구를 통해 마의 추출물과 침전물의 특성을 확인함으로써 마를 활용한 소재화, 식품 및 피부미용 기능성식품 및 화장품 소재 개발을 위한 데이터 자료로써 활용될 수 있을 것이라 생각된다.

Keywords

References

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