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Application of hydroxypropyl methylcellulose to improve the wettability of chitosan coating and its preservation performance on tangerine fruits.
Zhou, Qianyi; Huang, Shuangshuang; Zou, Lina; Ren, Dan; Wu, Xiyu; Xu, Dan.
Afiliação
  • Zhou Q; College of Food Science, Southwest University, Chongqing 400715, PR China.
  • Huang S; College of Food Science, Southwest University, Chongqing 400715, PR China.
  • Zou L; College of Food Science, Southwest University, Chongqing 400715, PR China.
  • Ren D; College of Food Science, Southwest University, Chongqing 400715, PR China; Chongqing Key Laboratory of Speciality Food Co-Built by Sichuan and Chongqing, Chongqing 400715, PR China; Modern "Chuan cai Yu wei" Food Industry Innovation Research Institute, Chongqing 400715, PR China.
  • Wu X; College of Food Science, Southwest University, Chongqing 400715, PR China; Chongqing Key Laboratory of Speciality Food Co-Built by Sichuan and Chongqing, Chongqing 400715, PR China; Modern "Chuan cai Yu wei" Food Industry Innovation Research Institute, Chongqing 400715, PR China.
  • Xu D; College of Food Science, Southwest University, Chongqing 400715, PR China; Chongqing Key Laboratory of Speciality Food Co-Built by Sichuan and Chongqing, Chongqing 400715, PR China; Modern "Chuan cai Yu wei" Food Industry Innovation Research Institute, Chongqing 400715, PR China; National Citrus Eng
Int J Biol Macromol ; 263(Pt 2): 130539, 2024 Apr.
Article em En | MEDLINE | ID: mdl-38432263
ABSTRACT
Hydroxypropyl methylcellulose (HPMC) was employed as an intermediate layer to enhance interfacial interaction between chitosan (CS) coating and tangerine fruits, thereby improving the preservation effect. Owing to the low surface tension of tangerine fruit (26.04 mN/m), CS coating solutions showed poor wetting properties on fruit peels (contact angle > 100°). However, by applying a 1.0 % (w/v) HPMC coating on fruits, the contact angle of CS solutions with concentrations of 0.5 %, 1.0 %, and 1.5 % (w/v) decreased to 47.0°, 47.4°, and 48.5°, respectively, whereas the spreading coefficient increased to -16.0 mN/m, -17.6 mN/m and -19.8 mN/m, respectively. Subsequently, the effects of the coatings on fruit quality were investigated. The results demonstrated the promising performance of HPMC-CS two-layer coating in inhibiting fruit respiration, reducing decay rate, and maintaining nutrient content. Notably, HPMC-1.5%CS coating not only reduced the decay rate of tangerine fruit by 45 % and 31 %, in comparison to the uncoated group (CK) and pure CS coating respectively, but also maintained a high content of ascorbic acid. Therefore, this study confirmed that the use of amphiphilic polymers for improving the surface properties of fruits can effectively facilitate the wetting of hydrophilic coatings on fruits, and significantly improve the fresh-keeping performance of edible coatings.
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Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Assunto principal: Citrus / Quitosana Idioma: En Ano de publicação: 2024 Tipo de documento: Article

Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Assunto principal: Citrus / Quitosana Idioma: En Ano de publicação: 2024 Tipo de documento: Article