Korean Journal of Food Science and Technology (한국식품과학회지)

Korean Society of Food Science and Technology (한국식품과학회)
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Extraction properties and chemical stability of turmeric pigments in salt, sucrose, and acetic acid preservation

염, 당, 산 침지조건에서 심황색소의 추출특성 및 화학적 특성 변화

  • Kang, Smee (Division of Applied Food System, College of Natural Science, Seoul Women's University) ;
  • Sung, Yunkyung (Division of Applied Food System, College of Natural Science, Seoul Women's University) ;
  • Hong, Jungil (Division of Applied Food System, College of Natural Science, Seoul Women's University)
  • 강스미 (서울여자대학교 자연과학대학 식품응용시스템학부) ;
  • 성연경 (서울여자대학교 자연과학대학 식품응용시스템학부) ;
  • 홍정일 (서울여자대학교 자연과학대학 식품응용시스템학부)
  • Received : 2019.11.01
  • Accepted : 2019.12.26
  • Published : 2020.02.29
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Abstract

Turmeric pigments have been used as coloring agents and functional ingredients. In this study, the extraction property and chemical stability of the pigments were evaluated in several preservative solutions containing NaCl, sucrose, and acetic acid. After 72 h of infusion, the protein and polyphenol levels and antioxidant activity of the turmeric extracts in the solutions were less pronounced than those in water. Acetic acid (12%) was more efficient at extracting curcuminoids from turmeric than water, NaCl (20%), or sucrose (25%). Curcumin was highly abundant in all solutions. The relative yield of bisdemethoxycurcumin (BMC) was the highest in acetic acid, whereas that of curcumin was highest in NaCl and sucrose solutions. Curcuminoids were relatively stable in sucrose and acetic acid; among them, BMC had the highest stability. The stability of the curcuminoid solution decreased based on the increase in NaCl content, whereas it was significantly enhanced in sucrose and acetic acid. The observations from this study can be applied to the processing and storage of turmeric-derived products in these preservative agents.

본 연구에서는 염, 당, 초산에 의한 가공, 저장, 조리 방법을 적용하여 NaCl, sucrose 및 acetic acid 등 3가지 용액에 강황을 침지시켜 추출물의 화학적 특성 및 쿠쿠미노이드 성분의 추출 정도를 분석하였다. NaCl (0-20%), sucrose (0-25%) 및 acetic acid (0-12%) 용액에서 강황분말을 3일간 침지한 결과, 단백질과 폴리페놀의 용출량, 용출액의 산화방지 효과는 물 추출에 비해 감소하였으나 acetic acid (12%) 용액에서 황색도와 쿠쿠미노이드 색소의 추출량은 현저히 증가하였다. 또한 각 침지용매에 심황색소를 분산시켜 쿠쿠미노이드 성분의 화학안정성과 분산안정성 등을 분석하였다. 심황색소의 잔류량은 NaCl (20%)에서 20%정도로 현저히 감소하였으나 sucrose (25%)와 acetic acid (12%) 침지액에서는 각각 88.6, 91.6%가 유지되었다. 심황색소의 sucrose 침지액 상에서는 저장시간과 sucrose 농도에 따라 H2O2의 양이 유의적으로 증가하였다. 한편 각 침지용매 상에서 분산안정성을 평가한 결과 NaCl 농도의 증가에 따라 심황색소의 용해도가 감소하였으나, sucrose와 acetic acid 상에서는 이들의 농도 증가에 따라 심황색소 용액의 분산 안정성이 유의적으로 증가하였다. 본 연구는 NaCl, sucrose 및 acetic acid 용매에서 심황색소의 화학안정성과 분산안정성의 화학적 행태에 대한 결과를 제공하며, 이러한 성질이 해당 용매를 이용한 강황의 가공, 저장, 조리 등의 처리에서 고려되어야 함을 시사한다.

Keywords

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