葡萄渣乙醇提取物对壳聚糖活性包装膜性能的影响  

Effects of ethanol extract from grape pomace on properties of chitosan active packaging film

作　　者：杨丽[1] 高增明 张福娟[2] 杜国军[1] 孙敬明 王存堂[1] YANG Li;GAO Zengming;ZHANG Fujuan;DU Guojun;SUN Jingming;WANG Cuntang(College of Food and Biological Engineering,Qiqihar University,Qiqihar 161006,China;Department of Biochemical Engineering,Chaoyang Teachers College,Chaoyang 122000,China)

机构地区：[1]齐齐哈尔大学食品与生物工程学院,黑龙江齐齐哈尔161006 [2]朝阳师范高等专科学校生化工程系,辽宁朝阳122000

出　　处：《食品与发酵工业》2022年第8期173-181,共9页Food and Fermentation Industries

基　　金：黑龙江省属高校基本业务专项(YSTSXK201812,135509224)。

摘　　要：该研究开发了壳聚糖(chitosan,CS)和葡萄渣乙醇提取物(ethanol extract of grape pomace,EEGP)的活性包装膜。测定了不同EEGP含量(0%、1.0%、3.0%、5%,质量分数,基于CS质量)的CS-EEGP膜的结构、物理、抗氧化和抑菌活性。傅里叶变换红外光谱显示,EEGP中的多酚可以通过分子间氢键与CS相互作用。X射线衍射分析表明,CS-EEGP膜的结晶度低于CS膜。EEGP的加入显著增加了CS膜的厚度、紫外可见光阻隔性、抗氧化和抗菌性能。然而,加入EEGP后,CS膜的含水量、水溶性、水蒸气阻隔能力和断裂伸长率降低。此外,CS-EEGP3膜包装有效降低了猪油在贮存过程中过氧化值88.27%。这些结果表明CS-EEGP膜可以作为活性包装,提高食品的氧化稳定性。In this study,ethanol extract of grape pomace(EEGP)was incorporated into chitosan(CS)film to develop active packaging.The properties of CS-EEGP films with different EEGP contents(0%,1.0%,3.0%and 5%on CS basis)were determined.The goal of this work was to prepare CS-based films for food packaging and to explore the effects of the amount of EEGP on the physicochemical,mechanical,molecular structure,antioxidant and antibacterial activities of CS films.The oxygen barrier and antioxidant ability of the CS-EEGP blend film were evaluated by a simulated oil oxidation experiment.In addition,their antibacterial activity was studied as active food packaging materials.Fourier transform infrared spectroscopy showed that polyphenols in EEGP could interact with CS through intermolecular hydrogen bonds.X-ray diffraction analysis revealed that the crystallinity of CS-EEGP films was lower than that of CS film.SEM showed that the addition of EEGP did not significantly change the microstructure of CS film,and CS-EEGP films still presented smooth and dense.This is also the reason for the decrease of WVP in CS-EEGP films.When the addition of EEGP increased from 0 to 3%,the WVP of CS membrane increased from(6.15±0.49)×10^(-12) g/(m·s·Pa)decreased to(3.54±0.67)×10^(-12) g/(m·s·Pa)。This shows that the addition of EEGP can significantly improve the water vapor barrier performance of CS film.The addition of EEGP significantly increased the thickness[from(0.047±0.0006)mm to(0.093±0.0020)mm]of CS film(P<0.05).This is another reason for the decrease of WVP in CS-EEGP films.In CS film,due to the structure and color of anthocyanins in EEGP changed,the L*and WI of CS film decreased significantly,a^(*),b^(*),ΔE and YI increased significantly.Thus,the UV-vis light barrier of CS film was improved,and the opacity was increased by 48.65%(P<0.05).The ability of CS film to scavenge DPPH and ABTS free radicals was(12.62±0.99)%and(15.91±0.61)%,respectively.Compared to CS film,the ability of CS-EEGP5 film to scavenge DPPH and ABTS free radic

关 键 词：葡萄渣乙醇提取物 壳聚糖膜 抗氧化活性 抑菌活性 猪油包装 

分 类 号：TS209[轻工技术与工程—食品科学] TS264.4[轻工技术与工程—食品科学与工程]