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http://dx.doi.org/10.5322/JES.2004.13.9.827

Biodegradation of Starch-Filled Acrylate Film by α-Amylase  

Kim, Jeong Du (부경대학교 응용화학공학부)
Yu, Su Yong (부경대학교 응용화학공학부)
Gam, Sang Gyu (제주대학교 토목환경공학부)
Ju, Chang Sik (부경대학교 응용화학공학부)
Lee, Min Gyu (부경대학교 응용화학공학부)
Publication Information
Journal of Environmental Science International / v.13, no.9, 2004 , pp. 827-833 More about this Journal
Abstract
The biodegradability of vinyl acetate acrylate resin and com starch blend was studied by determination of the reduced sugars produced after enzymatic hydrolysis. The starch hydrolysis reaction by $\alpha-amylase$ was achieved within 5 minutes. Optimal ranges of temperature and pH for the starch hydrolysis by $\alpha-amylase$ were around $80^{\circ}C$ and 6.5-7.2, respectively. The biodegradability of the starch-filled acrylate films increased as the content of starch increased. The biodegradation of starch in the starch-filled acrylate film by $\alpha-amylase$ was about 48.6% of that of pure starch. This value of biodegradable starch-filled acrylate film gave a good result with enzymatic shortcut test. The surface morphologies of the starch-filled acrylate film after enzymatic hydrolysis were investigated by scanning electron microscopy (SEM).
Keywords
Biodegradation; $\alpha$-amylase; Enzyme; Starch; Acrylate film;
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