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Preparation of modified polyvinyl formal vibration-damping material and its application in strawberry

文献类型： 外文期刊

作者： Zhang, Yiqin 1 ; Mu, Honglei 1 ; Gao, Haiyan 1 ; Chen, Hangjun 1 ; Wu, Weijie 1 ; Han, Yanchao 1 ; Fang, Xiangjun 1 ; Ton 1 ;

作者机构： 1.Minist Agr & Rural Affairs, Zhejiang Acad Agr Sci,Key Lab Postharvest Handing, Food Sci Inst,Key Lab Fruits & Vegetables Posthar, China Natl Light Ind,Key Lab Postharvest Preserva, Hangzhou 310021, Peoples R China

关键词： antifungal; polyvinyl formal; strawberry; vibration‐ damping

期刊名称：JOURNAL OF FOOD BIOCHEMISTRY （ 影响因子：2.72； 五年影响因子：2.543 ）

ISSN： 0145-8884

年卷期： 2021 年 45 卷 4 期

页码：

收录情况： SCI

摘要： Mechanical damage and microbial infestation were critical issues during strawberry transportation. This study prepared a modified polyvinyl formal (PVFM) vibration-damping material and investigated its application in strawberry transportation. This modified PVFM was primarily composed of polyvinyl alcohol, starch, formaldehyde, and allyl isothiocyanate. Our results showed that the modified PVFM had good vibration-damping and antifungal properties with 0.137 g/m(3) of density, a water absorption ratio value of 6.24, 278 Pa of tensile strength, 3.86 Pa of elastic modulus, a buffer coefficient of 0.318, and antifungal rates of 68.8% and 80.6% against Bacillus anthracis and Botrytis cinerea, respectively. Moreover, this modified PVFM could enhance the storage life of strawberry by improving PAL activity from 376 to 3,125 U/g, inhibiting POD activity with a maximum value of 3.1 U/g, and decreasing CAT activity from 324 to 35 U/g. The modified PVFM presented a good vibration-damping capacity and the potential to extend strawberry shelf life. Practical applications Berry fruits were vulnerable to mechanical damage caused by vibration during transportation, resulting in quality deterioration, rot, and aging. In this study, modified polyvinyl formal (PVFM) was prepared and was of low density and displayed good mechanical, vibration-damping, and antifungal properties. The modified PVFM could improve the storage life of strawberry. Thus, the modified PVFM could have potential application in berry fruits transportation.

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