期刊
CARBOHYDRATE POLYMERS
卷 96, 期 1, 页码 71-81出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.carbpol.2013.03.083
关键词
Agar; kappa-Carrageenan; Konjac glucomannan; Ternary blend film; Clay nanocomposite; Hydrogel
资金
- R&D Convergence Center Support Program of the Ministry for Food, Agriculture, Forestry and Fisheries, Republic of Korea [710003-03-3-SB320]
- Institute of Planning & Evaluation for Technology in Food, Agriculture, Forestry & Fisheries (iPET), Republic of Korea [710003074SB110] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
Multicomponent hydrogel films composed of agar, kappa-carrageenan, konjac glucomannan powder, and nanoclay (Cloisite (R) 30B) were prepared and their mechanical and water barrier properties such as water vapor permeability (WVP), water contact angle (CA), water solubility (WS), water uptake ratio (WUR), water vapor uptake ratio (WVUR) were determined. Mechanical, water vapor barrier, and water resistance properties of the ternary blend film exhibited middle range of individual component films, however, they increased significantly after formation of nanocomposite with the clay. Especially, the water holding capacity of the ternary blend biopolymer films increased tremendously, from 800% to 1681% of WUR for agar and kappa-carrageenan films up to 5118% and 5488% of WUR for the ternary blend and ternary blend nanocomposite films, respectively. Water vapor adsorption behavior of films was also tested by water vapor adsorption kinetics and water vapor adsorption isotherms test. Preliminary test result for fresh spinach packaging revealed that the ternary blend biohydrogel films had a high potential for the use as an antifogging film for packaging highly respiring agricultural produce. In addition, the ternary blend nanocomposite film showed an antimicrobial activity against Gram-positive bacteria, Listeria monocytogenes. (C) 2013 Elsevier Ltd. All rights reserved.
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