Carboxymethyl chitosan-pullulan edible films enriched with galangal essential oil: Characterization and application in mango preservation

Wei Zhou, Yunxia He, Fei Liu, Liangkun Liao, Xiaobing Huang, Ruyi Li, Ying Zou, Lei Zhou, Liqiang Zou, Yuhuan Liu, Roger Ruan, Jihua Li

Research output: Contribution to journalArticlepeer-review

Abstract

This study aimed to develop an active edible film based on carboxymethyl chitosan (CMCS) and pullulan (Pul) incorporated with galangal essential oil (GEO) by the casting method. And their physical properties, structural and preservation effect on mangoes were characterized. The CMCS/Pul ratio was determined to be 2.5:2.5 after the optimization of physical properties, mechanical properties and barrier properties of the blend film. The results of FT-IR and XRD showed that hydroxyl groups of Pul interacted with the carboxyl groups of CMCS and the blend films had good compatibility. Good thermal stability of CMCS/Pul-GEO films was further proven by TGA curves. The CMCS/Pul-8 %GEO film showed effective preservations on mango fruits during 15 days of storage at 25 ± 1 °C, based on the characterization by fruits weight loss, firmness, titratable acidity, soluble solids. Consequently, CMCS/Pul-GEO blend films may be a promising eco-friendly packaging material for the industrial application of fruit preservation.

Original languageEnglish (US)
Article number117579
JournalCarbohydrate Polymers
Volume256
DOIs
StatePublished - Mar 15 2021
Externally publishedYes

Bibliographical note

Funding Information:
This work was supported by Natural Science Foundation of Hainan Province of China [grant number 320MS091 ], National Natural Science Foundation of China [grant number 32001689 ], the Central Public-interest Scientific Institution Basal Research Fund for Chinese Academy of Tropical Agricultural Sciences [grant number 1630122017016 ], the Innovation Team of Modern Agricultural Industry Technology System in Guangdong Province of China [grant number 2019KJ116 ], and the Key Research and Development Project in Guangdong Province of China [grant number 2020B020225003 ].

Funding Information:
This work was supported by Natural Science Foundation of Hainan Province of China [grant number 320MS091], National Natural Science Foundation of China [grant number 32001689], the Central Public-interest Scientific Institution Basal Research Fund for Chinese Academy of Tropical Agricultural Sciences [grant number 1630122017016], the Innovation Team of Modern Agricultural Industry Technology System in Guangdong Province of China [grant number 2019KJ116], and the Key Research and Development Project in Guangdong Province of China [grant number 2020B020225003].

Publisher Copyright:
© 2021 Elsevier Ltd

Keywords

  • Active packaging
  • Carboxymethyl chitosan
  • Galangal essential oil
  • Mango preservation
  • Pullulan

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