한국식품영양과학회지 (Journal of the Korean Society of Food Science and Nutrition)

  • 제24권4호
  • /
  • Pages.619-624
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  • 1995
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  • 1226-3311(pISSN)
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  • 2288-5978(eISSN)
한국식품영양과학회 (The Korean Society of Food Science and Nutrition)
권호 표지

단백질 추출 pH가 참깨 농축단백질의 기능적 특성에 미치는 영향

The Effect of Protein Extraction pH on the Functional Properteis of Seasame Protein Concentrates

  • 박정륭 (영남대학교 식품영양학과) ;
  • 김은정 (영남대학교 식품영양학과)
  • 발행 : 1995.08.01
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초록

Sesame protein concentrate(SPC) was prepared from defatted sesame flour(DSF) at several different pH(2.0, 7.0, 9.0, 11.0) for protein extraction. Some of their functional properties were determined in order to compare the effects of pH during preparation of concentrates. Compared with DSF, nitrogen solubility was markedly improved in all SPC, and SPC extracted at pH 11.0 showed the highest solubility at all pH leaves examined. Fatabsorption was increased in all SPC prepared, but water absorption was decreased as the extraction pH of protein increased. The emulsifying properteis and foaming properties of SPC were remarkably higher than DSF. As the extraction pH of protein was increased, the emulsion activity was also increased, but emulsion stability was decreased. SPC extracted at pH 7.0 showed the highest foaming capacity on the other hand, the highest foaming stability was shown in SPC extracted at pH 2.0. As the protein extraction pH increased, the viscosity of the protein solution was increased. SPC extracted at pH 11.0 showed highest viscosity at all protein concentrations tested.

키워드

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