果胶-海藻酸钠-黄原胶可食性复合膜的制备及性能研究  

Preparation and Application of Pectin-Sodium Alginate-Xanthan Gum Edible Composite Film

作　　者：樊彦玲 李晓君 张思瑶 杨静 FAN Yan-ling;LI Xiao-jun;ZHANG Si-yao;YANG Jing(School of Chemical Engineering and Technology,North University of China,Taiyuan 030051,Shanxi,China;Nanolattix Biotech Corporation,Taiyuan 030006,Shanxi,China)

机构地区：[1]中北大学化学工程与技术学院,山西太原030051 [2]山西纳安生物科技股份有限公司,山西太原030006

出　　处：《食品研究与开发》2021年第9期59-66,共8页Food Research and Development

基　　金：国家自然科学基金青年基金(31200462);山西省回国留学基金(2020-101);山西省大学生创新创业项目(2019)。

摘　　要：以果胶、海藻酸钠和黄原胶为主要原料制备可食性多糖类复合膜,先以流变学试验确定复合膜液中果胶及海藻酸钠的最佳质量分数分别为0.6%及0.5%,再以此膜的拉伸强度为响应值,选择黄原胶、甘油和氯化钙质量分数为优化因素,在单因素试验的基础上,通过响应面分析对果胶-海藻酸钠-黄原胶复合膜(pectin-sodium alginate-xanthan gum composite film,PAX)的制备工艺进行优化。结果表明:黄原胶质量分数为0.4%、甘油质量分数为1.8%、氯化钙质量分数为2%时,PAX的拉伸强度达到最大值,为29.65 MPa,其断裂伸长率为19.02%,水蒸气透过率为18.12×10^(-11)g/(m^(2)·s·Pa)。通过扫描电镜、傅立叶变换红外光谱和X射线衍射等方法对复合膜结构进行表征,结果显示PAX表面光滑、平整、致密,具有良好的结构完整性和相容性。Pectin,sodium alginate and xanthan gum were used as the main raw materials to prepare edible polysaccharide composite film.Firstly,the rheological experiments were used to determine that the optimal con-centrations of pectin and sodium alginate in the film-forming solution were 0.6%and 0.5%respectively.Then,the tensile strength of the film was taken as the evaluation index,and xanthan gum concentration,glycerol con-centration and calcium chloride concentration were selected as the optimization factors.On the basis of single factor,the preparation technology of pectin-sodium alginate-xanthan gum composite film(PAX)was opti-mized by response surface analysis,and its comprehensive properties were determined.The results showed that when xanthan gum concentration was 0.4%,glycerol concentration was 1.8%,and calcium chloride concentra-tion was 2%,the tensile strength of PAX reached the maximum value of 29.65 MPa.Its elongation at break and water vapor transmission rate were 19.02%,and 18.12×10^(-11) g/(m^(2)·s·Pa),respectively.The structure of PAX was characterized by scanning electron microscopy,Fourier transform infrared spectroscopy,and X-ray diffrac-tion.It showed that the surface of PAX was smooth,flat,and compact,with good structural integrity and com-patibility.

关 键 词：果胶 海藻酸钠 黄原胶 拉伸强度 复合膜 

分 类 号：TS206.4[轻工技术与工程—食品科学]