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Food science and biotechnology v.16 no.4, 2007년, pp.543 - 548   피인용횟수: 3

Influence of Extrusion on the Solubility of Defatted Soybean Flour in Enzymatic Hydrolysis

Cha, Jea-Yoon    (CJ Foods R&D, CJ Corporation   ); Shin, Han-Seung    (Department of Food Science and Technology, Dongguk University   ); Cho, Yong-Jin    (Korea Food Research Institute   ); Kim, Chong-Tai    (Korea Food Research Institute   ); Kim, Chul-Jin    (Korea Food Research Institute  );
  • 초록

    Low-energy processing technology, which enhances the utility of defatted soybean flour (DSF), was developed using extrusion processing. DSF was extruded at different conditions using a twin screw extruder and then, dried at $40^{\circ}C$ for 20 hr. The nitrogen solubility index (NSI), viscosity, water solubility index (WSI), and water absorption index (WAI) of DSF increased after extrusion processing. The density of DSF extrudates decreased with the decrease in water content from 53 to 33% and the increase in extrusion temperature from 110 to $160^{\circ}C$ . The addition of NaOH from 1.2 to 1.8% and citric acid from 1 to 5% increased the total solubility (TS) of DSF due to the decrease of protein coiling and hydrophobic bonds formation during extrusion processing. When viscozyme was reacted first, TS, NSI, and soluble carbohydrate content of DSF hydrolysates increased about 12, 6, and 7%, respectively, compared to them reacted with protease first. The TS and NSI of DSF hydrolysates were increased about 15 and 10%, respectively, by extrusion processing at alkaline and acidic pH. Extrusion processing at alkaline and acidic pH contributed the increase of efficiency to hydrolyze DSF samples using enzyme.


  • 주제어

    defatted soybean flour .   extrusion .   solubility .   hydrolysis.  

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  • 이 논문을 인용한 문헌 (3)

    1. 2008. "" Food science and biotechnology, 17(1): 118~122     
    2. Cho, Sung-Hee ; Park, So-Young ; Choi, Sang-Won 2008. "Effects of Eisenia Bicyclis Extracts and Pill on Blood Glucose and Lipid Profile in Streptozotocin-Induced Diabetic Mice" 韓國營養學會誌 = The Korean journal of nutrition., 41(6): 493~501     
    3. 2009. "" Food science and biotechnology, 18(3): 689~693     

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