期刊
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
卷 164, 期 -, 页码 489-498出版社
ELSEVIER
DOI: 10.1016/j.ijbiomac.2020.07.130
关键词
Anthracnose; Biopolymers; Fruit shelf life; Food packaging; Metal nanoparticles
资金
- Coordenacao de Aperfeicoamento de Pessoal de Nivel Superior - Brazil CAPES-PRINT [88887.310727/2018-00, 001]
- CNPq (National Council for Scientific and Technological Development) [405432/2018-6]
- CAPES
This study aimed to understand the effect of silver nanoparticles (AgNPs) on physiochemical properties of hydroxypropyl methylcellulose (HPMC) film-forming solutions (FFS) and nanocomposite films (NCF), as well as the efficacy of these materials to control the development of anthracnose caused by Colletotrichum gloeosporioides in papaya (Carica papaya L.). FFS were characterized by pH, particle size distribution, and rheology. In addition, thickness, morphology, water contact angle, barrier, chemical, crystallinity, thermal, and mechanical properties from NCF were investigated. The minimum inhibitory concentration of AgNPs against C. gloeosporioides was determined by in vitro test. FFS with 0.25 wt% of AgNPs were used as coatings in papayas inoculated with C. gloeosporioides. Finally, the physicochemical parameters were investigated during their storing up to 7 days at 10 degrees C, followed by 7 days at 20 degrees C. The presence of AgNPs impacted the thickness, morphology, moisture content, chemical bonds, crystalline structure, and thermal properties of films. Coatings with 0.25 wt% of AgNPs reduced the incidence and severity of C. gloeosporioides and avoided theweight loss of papayas during storing. The ripening of papaya occurred naturally, showing that the coating only delayed this process. Thus, HPMC-AgNPs coating can be an alternative to extend the papaya shelf life. (C) 2020 Published by Elsevier B.V.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据