Comparative studies on the characterization and antioxidant properties of biodegradable alginate films containing ginseng extract
Comparative studies on the characterization and antioxidant properties of biodegradable alginate films containing ginseng extract
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DOI：
10.1016/j.jfoodeng.2010.01.015
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发表时间：
2010-06-01
影响因子：
5.5
通讯作者：
Ryu, Gi Hyung
中科院分区：
文献类型：
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作者：
Norajit, Krittika;Kim, Ki Myong;Ryu, Gi Hyung
研究了加入白色、红色和挤压白色人参提取物的海藻酸盐生物降解膜的物理性能和抗氧化性能。所有藻酸盐膜样品的水分含量没有显著差异（p > 0.05），除了那些没有加入人参提取物的膜样品，其具有最高的水分含量。人参提取物的加入降低了海藻酸盐膜的拉伸强度和弹性模量（p < 0.05），但增加了断裂伸长率。浸提液的存在不会显著影响薄膜样品的水蒸气渗透性。在130 ℃的机筒温度下含有挤出的白色人参提取物的藻酸盐膜呈现出对甲醇中的2，2-二苯基-1-苦肼基自由基（DPPH）的最高（61.12%）自由基清除活性，其次是在115 ℃的机筒温度下挤出的含有白色人参的膜。就自由基清除活性而言，在这些样品之后分别是含有红色和白色人参提取物的膜样品。这些结果表明，挤出的白色人参提取物具有良好的潜力，可以掺入到海藻酸盐中，以制备用于各种食品应用的抗氧化生物降解膜或涂层。(C)2010爱思唯尔有限公司版权所有。
The physical and antioxidant properties of alginate biodegradable film incorporating white, red and extruded white ginseng extracts were investigated. No differences in moisture contents of all alginate film samples were noticeable (p > 0.05) except those film samples incorporated without ginseng extract, which had the highest moisture content. The addition of ginseng extract to alginate film decreased tensile strength and elastic modulus (p < 0.05) but increased the percent elongation at break. The presence of extracts did not significantly affect the water vapor permeability of the film samples. Alginate film containing extruded white ginseng extract at a barrel temperature of 130 degrees C presented the highest (61.12%) free-radical scavenging activity against the 2,2-diphenyl-1-picryhydrazyl radical (DPPH) in methanol, followed by film containing white ginseng extruded at a barrel temperature of 115 degrees C. Following these samples in terms of free-radical scavenging activity were film samples containing red and white ginseng extracts, respectively. These results revealed that extruded white ginseng extract has good potential to be incorporated into alginate to make antioxidant biodegradable film or coating for various food applications. (C) 2010 Elsevier Ltd. All rights reserved.