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http://dx.doi.org/10.3746/jkfn.2016.45.5.690

Characterization of Styela clava Tunic after Alkaline Treatment  

Kim, Min Jung (Department of Food Science and Nutrition, and Kimchi Research Institute)
Kim, Won Baek (Department of Food Science and Nutrition, and Kimchi Research Institute)
Hwang, Ji Hoe (Department of Food Science and Nutrition, and Kimchi Research Institute)
Kim, Suae (Department of Food Science and Nutrition, and Kimchi Research Institute)
Kim, Bo Ram (Department of Food Science and Nutrition, and Kimchi Research Institute)
Koo, Kyoung Yoon (Department of Food Science and Nutrition, and Kimchi Research Institute)
Son, Hong Joo (Department of Life Science and Environment Biochemistry, Pusan National University)
Hwang, Dae Youn (Department of Biomaterials Science, Pusan National University)
Jung, Young Jin (Department of Biomaterials Science, Pusan National University)
Lee, Heeseob (Department of Food Science and Nutrition, and Kimchi Research Institute)
Publication Information
Journal of the Korean Society of Food Science and Nutrition / v.45, no.5, 2016 , pp. 690-695 More about this Journal
Abstract
This study was performed to evaluate the effect of alkaline treatment on Styela clava tunic (SCT). Considerable damage to the surface of alkali-treated SCT was observed by scanning electron microscopy (SEM) in a concentration-dependent manner upon alkaline treatment. The amount of crystalline region in SCT gradually increased with increasing NaOH concentration, which was analyzed by X-ray diffraction and thermogravimetric analysis. The initial enzymatic reaction of Celluclast toward SCT was elevated by treatment with NaOH up to 1.0 N concentration due to disruption of the SCT surface by promoting binding of enzymes with SCT. However, in the late stage of the enzyme reaction, hydrolysis rate decreased with elevation of NaOH concentration, thereby increasing the amount of non-reacted residuals. This result was due to the increase in the crystalline regions in SCT.
Keywords
Styela clava tunic (SCT); alkaline treatment; crystallinity; cellulose; cellulase digestibility;
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Times Cited By KSCI : 7  (Citation Analysis)
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