Effects of Enzyme Treatment on Physicochemical Characteristics of Small Red Bean Percolate

팥 침출액의 이화학적 특성에 대한 효소처리의 영향

  • Hwang, Cheol-Seung (Lotte R&D Center) ;
  • Jeong, Do-Yeong (Faculty of Biotechnology (Food Science & Technology Major), Chonbuk National University) ;
  • Kim, Yong-Suk (Research Center for Industrial Development of BioFood Materials, Chonbuk Notional University) ;
  • Na, Jong-Min (Daedoo Food Co., Ltd.) ;
  • Shin, Dong-Hwa (Faculty of Biotechnology (Food Science & Technology Major), Chonbuk National University)
  • 황철승 (롯데중앙연구소) ;
  • 정도영 (전북대학교 응용생물공학부(식품공학 전공)) ;
  • 김용석 (전북대학교 바이오식품 소재개발 및 산업화 연구센터) ;
  • 나종민 ((주)대두식품) ;
  • 신동화 (전북대학교 응용생물공학부(식품공학 전공))
  • Published : 2005.04.30


Effect of enzyme treatment on physicochemical characteristics of small tea bean percolate were estimated. Three types of small red bean percolate were prepared by heat treatment for 30 min at $95^{\circ}C$ (1st), 30 min at $95^{\circ}C$ (2nd), and 40 min at $120^{\circ}C$ (3rd). They were then treated with 0.5% ${\alpha}-amylase$ (v/v) for 4 hr at $108^{\circ}C$ (${\alpha}-amylase$ treatment), then with 0.5% ${\beta}-amylase$ (v/v) for 4 hr at $60^{\circ}C$ (${\alpha}-$ and ${\beta}-amylase$ treatment). Crude saponin contents of 1st-3rd percolates were 0.82, 1.44, and 1.52 mg/g, respectively. ${\circ}Brix$ of small red bean percolates treated with enzymes increased to $0.8-1.2\;{\circ}Brix$ with 2nd and 3rd percolates showing no significant difference between ${\alpha}-amylase$ and ${\alpha}-$ and ${\beta}-amylase$ treatments. pH of 3rd percolate treated with ${\alpha}-$ and ${\beta}-amylase$ decreased from initial 6.2 to 4.7. Hunter L value of small red bean percolate treated with ${\alpha}-$ and ${\beta}-$ decreased, whereas a and b values increased. Small red bean beverage made with 3rd percolate showed high score in flavor, taste, and overall acceptability. Results suggest small red bean percolate treated with enzymes could be used for preparation of small red bean beverage.


small red bean;small red bean percolate;small red bean beverage;${\alpha}-amylase$;${\beta}-amylase$


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