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KMID : 1024420170210030280
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Food Engineering Progress
2017 Volume.21 No. 3 p.280 ~ p.285
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Extraction of Starch from Domestic Potato Sludge by Food-Grade Hemicellulase and its Physicochemical Properties
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Choi Jung-Min
Park Cheon-Seok
Baik Moo-Yeol
Kim Hyun-Seok
Seo Dong-Ho
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Abstract
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The objective of this study was to increase the efficiency of starch extraction from potato sludge by different concentration of food-grade hemicellulase. The potato sludge, which is a by-product of potato processing industry, was treated with food-grade hemicellulase. Starch extraction efficiency displayed no significant difference in hemicellulase concentration. The purities of potato starch increased from 83.40 to 95.91, 97.44, 95.58, and 97.79%, with treated 0.5, 0.75, 1.0, and 1.5% hemicellulase, respectively. The physicochemical properties of the starches, such as granule structure, particle size, pasting, and thermal transition, were not affected by the concentration of hemicellulase. These results indicate that food-grade hemicellulase treatment is an efficient method for starch extraction from potato sludge.
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KEYWORD
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potato sludge, starch extraction, hemicellulase, starch
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