Food Science and Preservation (한국식품저장유통학회지)

The Korean Society of Food Preservation (한국식품저장유통학회)
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Conditions for Pigment Extraction from Bokbunja (Rubus coreanus Miquel) Byproducts

복분자 부산물(박) 색소의 추출조건 모니터링

  • Jeong, Yong-Jin (Department of Food Science and Technology, Keimyung University and Keimyung Foodex Co., Ltd) ;
  • Seo, Ji-Hyung (Division of Food, Beverage & Culinary Arts, Yeungnam College of Science & Technology)
  • 정용진 (계명대학교 식품가공학과 및 (주)계명푸덱스) ;
  • 서지형 (영남이공대학 식음료조리계열)
  • Published : 2009.06.30
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Abstract

With the aim of using Bokbunja byproducts as natural pigments, characteristics of extracts were investigated after application of different extraction conditions. Total optical density (TOD) of pigment extracts was greatest (9.51 units) when 80% (v/v) ethanol was used as solvent. The polyphenol content was greatest when 40% (v/v) ethanol was used and tended to decrease with higher concentrations of ethanol. The TOD values were increased when citric or lactic acid was added to extracting solvents. Polyphenols were effectively extracted by solvent containing ascorbic acid. As the level of byproducts increased with different extraction procedures, TOD and polyphenol content of byproducts tended to decrease. More than 90% of anthocyanin pigments and polyphenols could be obtained using two extractions with 40% (v/v) ethanol.

복분자 부산물(박)을 유용한 천연 색소원으로 활용하기 위하여, 복분자 부산물(박)의 추출조건에 따른 색소 및 폴리페놀의 추출 특성에 대해 조사하였다. 용매 조건별 추출한 색소액의 총 흡광도는 80% 에탄올 용매에서 9.51 unit로 높은 편이었고, 폴리페놀은 에탄올 함량이 40%일 때 최고 수율이었고 에탄올 농도가 높아감에 따라 감소하는 경향이었다. 추출액의 총 흡광도는 용매에 citric acid 및 lactic acid를 첨가하였을 때 높았고, 폴리페놀의 함량은 ascorbic acid를 첨가한 용매 조건에서 높았다. 추출조건에서 부산물(박)의 혼합량이 많을수록 부산물(박) 단위 중량에 대한 총 흡광도 및 부산물(박) 단위 중량에 대한 폴리페놀 함량은 감소하는 경향이었으며, 2차례의 추출과정을 반복하였을 때 색소와 폴리페놀은 $85{\sim}90%$ 이상의 추출효율을 나타내었다.

Keywords

References

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