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Changes of Physicochemical Characteristics of Acanthopanax senticosus Extract during Storage  

Chung Hun-Sik (Food and Bio-Industry Institute, Kyungpook National University)
Youn Kwang-Sup (Department of Food Science and Technology, Catholic University of Daegu)
Publication Information
Food Science and Preservation / v.12, no.3, 2005 , pp. 204-208 More about this Journal
Abstract
This study was conducted to investigate the effects of temperature and packaging on the quality characteristics of hot-water extract from Acanthopanax senticosus. The herb samples, ground and sifted($8{\sim}20$ mesh), were extracted by a boiling($100^{\circ}C$) water under the atmospheric pressure for 2 hrs. The extract was packed with out nylon PE(0.08 mm) pouch and kept under the condition(40 and $60^{\circ}C$) for 10 days. The reduction of turbidity, pH, polyphenol amount and DPPH radical scavenging activity of extract were retarded by packaging under the low temperature. Titratable acidity was increased with packaging at high temperature. Soluble solid content was not affected by packaging and temperature condition. The changes of quality characteristics followed the first-order reaction rate. Arrhenius equation was applied to determine the effects of temperature on the reaction rate constant, showing high $R^2$. These results suggested that packaging under lower temperature can be utilized for maintaining the quality of A senticosus extract.
Keywords
Acanthopanax senticosus; extract; packaging; storage;
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