壳聚糖双胍盐酸盐涂膜保鲜砂糖橘及其抑菌作用的研究  

Effects of chitosan biguandine hydrochloride coating on storage quality of Citrus reticulata and its antimicrobial activities

作　　者：傅夏兵[1] 陈佳阳[1] 罗永祥[1] 乐学义[1,2] 

机构地区：[1]华南农业大学理学院,广东广州510642 [2]华南农业大学生物材料研究所,广东广州510642

出　　处：《广东农业科学》2013年第23期99-102,共4页Guangdong Agricultural Sciences

基　　金：广东省科技计划项目(2011B020310005);华南农业大学211工程基金(2009B010100001)

摘　　要：研究了壳聚糖双胍盐酸盐(CGH)对柑橘绿霉菌和柑橘青霉菌的抑菌能力,并通过涂膜的方法处理砂糖橘,测定了贮藏过程中果实失重率、可溶性固形物含量(TSS)、维生素C(Vc)含量及总酸含量(TA)的变化。结果表明,与壳聚糖(CTS)比较,CGH对柑橘绿霉菌和柑橘青霉菌具有较强的抑菌能力,当CGH浓度为0.4 mg/mL和5.0mg/mL时,可分别完全抑制柑橘青霉菌和柑橘绿霉菌的生长;质量浓度为2%的CGH涂膜处理的砂糖橘在28(±2)℃下存放27 d后,失重率仅为2.25%,TSS为13.7%,Vc含量为每100 g砂糖橘鲜重含有15.01 mg、可滴定酸含量为0.85%。与对照相比,CGH涂膜较好地保持了果实的品质。The antimicrobial activities of chitosan biguandine hydrochloride （CGH） were investigated against Citrus green mold and Citrus Penicillium, respectively. Relation between variation and storage time of Citrus reticulata mass-loss ratio, total soluble solid, Vc content and soluble acid content was examined attentively after fresh-keeping process with CGH as coating film. CGH could completely inhibit the growth of Citrus Penicillium and Citrus green mold at 0.4 mg/mL and 5.0 mg/mL, respectively. CGH with concentration of 2% coating on Citrus reticulata showed a better preservation effect after 27 d storage under 28 ±2℃. The mass-loss, total soluble solid, Vc content and soluble acid content of Citrus Reticulata were 2.25%, 13.7%, 15.01 mg/100g, and 0.85%, respectively.

关 键 词：壳聚糖双胍盐酸盐 砂糖橘 保鲜 抑菌作用 

分 类 号：S609.3[农业科学—园艺学] S667.2