添加中草药对黄原胶-长角豆半乳甘露聚糖复合膜性质的影响  

Effect of Chinese Medicinal Herbs on Packaging Performance of Xanthan Gum-locust Bean Galactomannan Composite Film

作　　者：叶文斌[1] 樊亮[1] 贠汉伯[2] 

机构地区：[1]陇南师范高等专科学校生化系,甘肃陇南742500 [2]中国科学院寒区旱区环境与工程研究所冻土工程国家重点实验室,甘肃兰州730000

出　　处：《食品科学》2013年第13期24-28,共5页Food Science

基　　金：国家"863"计划项目(2006EA780088);广东省科技厅科技计划项目(2007B080701046);冻土工程国家重点实验室自主基金项目(SKLFSE-ZY-05)

摘　　要：以黄原胶和长角豆半乳甘露聚糖为成膜基质,添加适量的增塑剂和中草药成分,制备可食性复合膜。研究复合膜中中草药大黄和五倍子对可食性复合膜的力学性能、透湿性、透光率及其颜色的影响。结果表明:随着中草药成分比例的增加,复合膜的抗拉强度逐渐升高,断裂伸长率下降,透湿性逐渐降低,而透明度则逐渐降低,膜的明度值逐渐下降,绿色值逐渐增加;中草药与黄原胶-长角豆半乳甘露聚糖复合膜可食、环保、可降解,因此,可以应用到食品和果蔬的保鲜与长途运输包装方面具有潜在的应用前景。The aim of this work was to manufacture edible composite films by extrusion from xanthan gum and locust bean galactomannan.Plasticizers and Chinese medicinal herbal extracts were added to improve the film flexibility.The influence of the concentrations of rhubarb and Chinese gall extracts on mechanical properties,water resistance,light transmittance,and color properties of edible composite films were investigated.The results indicated that with increasing concentrations of both extracts,the tensile strength（TS） of films increased,whereas the elongation at break（E）,water vapor permeability and light transmittance decreased.Additionally,the films became darker and showed a higher green value.In conclusion,composite films made from xanthan gum and locust bean galactomannan as well as Chinese medicinal herbal extracts are edible,green and degradable and may have promising application prospects in delaying the postharvest senescence and long-distance transportation during storage and extending the shelf life of vegetables and fruits.

关 键 词：黄原胶 长角豆半乳甘露聚糖 中草药可食性膜 力学性能 阻隔性 

分 类 号：TS206.4[轻工技术与工程—食品科学]