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应用开发

机械活化法制备抑菌材料及其对草鱼的涂膜保鲜作用

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  • 浙江工业大学海洋学院,浙江杭州310014
何荣军(1978—),男,浙江龙泉人,副教授,硕士,研究方向为食品化学,E-mail:hrjun@zuju.edu.cn.

基金资助

浙江省自然科学基金资助项目(LY12H28007)

Preparation of antibacterial coating materials by mechanicalactivation method and preservation of grass carp

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  • College of Ocean,Zhejiang University of Technology,Hangzhou 310014,China

摘要

通过机械活化法对淀粉和ε-聚赖氨酸的混合物进行球磨处理得到球磨共混物,利用扫描电子
显微镜(SEM)、X-射线衍射仪(XRD)、差示扫描量热仪(DSC)、红外光谱仪(FTIR)等对其晶体结
构、颗粒形貌、热特性和化学结构进行表征,并初步探讨了它对草鱼的涂膜保鲜效果.结果表明:在
机械活化过程中,淀粉和ε-聚赖氨酸的晶体结构和颗粒形貌发生变化、粒径减小、结晶度下降、糊化
温度降低,但是其化学结构没有改变.(4±1)℃条件下对草鱼鱼肉进行涂膜处理,结果表明:球磨
共混物涂膜处理组的挥发性盐基氮(TVB-N)和丙二醛(TBA)含量显著低于物理混合物涂膜处理
组,可减缓pH 的变化,并可使菌落总数指标在10d之内不超过5(lg CFU/g).这些结果表明,机
械活化法制备抑菌膜材料在保鲜方面有潜在的应用价值.

本文引用格式

何荣军,施俊妃,孙培龙 . 机械活化法制备抑菌材料及其对草鱼的涂膜保鲜作用[J]. 发酵科技通讯, 2017 , 46(1) : 30 -35 . DOI: 10.16774/j.cnki.issn.1674-2214.2017.01.007

Abstract

At the solvent-free and external agents-free condition,the mixture of starch andε-Poly-
L-lysine(NSP)was mechanically treated by the technology of mechanical activation method with
a ball mill,and the product was named MASP.The effect of ball milling treatment on the
morphology,crystal structure and molecular groups of starch was explored by scanning electron
microscopy (SEM),X-Ray diffraction (XRD),differential scanning calorimetry (DSC)and
fourier transform infrared spectroscopy(FTIR).The films of MASP were covered on grass carp.
The preserving quality of grass carp during cold storage(4±1)℃ was assessed.The results
indicated that during the preparation process,the particle morphology and crystallization of
starch were destroyed,but the chemical structure of starch andε-Poly-L-lysine was almost not
changed.The contents of volatile base nitrogen(TVB-N)and malondialdehyde(TBA)of the
MASP coating treatment group were significantly lower than those of the NSP coating treatment
group,slowed down the rate of change,meanwhile the total number of colonies didnt exceed 5
(lg CFU/g)within 10days.These results indicated that the preparation of antibacterial coating
materials by mechanical activation method has potential application value in preservation.
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