Articles
EFFECT OF CHITOSAN COMPOSITE COATING ON CHINESE BLUEBERRY FRUIT (VACCINIUM ULIGINOSUM L.)
Article number
1053_22
Pages
207 – 214
Language
English
Abstract
The effects of chitosan and gelatin-based coatings on the postharvest quality of blueberry fruit were investigated by measuring changes in firmness, rate of weight loss, titratable acidity, vitamin C content, respiratory rate, and the activity of SOD during 20 d of cold storage at 2±0.5°C (RH 70-80%). The results indicated that chitosan composite coatings successfully reduced the rate of weight loss, inhibited changes in titratable acidity and the loss of vitamin C content.
Fruit maintained their firmness, and exhibited increased activity of SOD. The coating used on the blueberry fruit consisted of 1% chitosan, 1% gelatin, 0.2% glycerol, 0.1% Tween 20, and 1.0 mmol/L salicylic acid.
The incorporation of salicylic acid into the coating also reduced the respiratory rate in blueberry, which could also contribute to prolonging its shelf life.
Fruit maintained their firmness, and exhibited increased activity of SOD. The coating used on the blueberry fruit consisted of 1% chitosan, 1% gelatin, 0.2% glycerol, 0.1% Tween 20, and 1.0 mmol/L salicylic acid.
The incorporation of salicylic acid into the coating also reduced the respiratory rate in blueberry, which could also contribute to prolonging its shelf life.
Authors
D. Feng, W. Zhengguang, Z. Yimei, Z. Xiang, G.X. Meng , Y. Xu’, Y. Bi
Keywords
Chinese blueberry, postharvest quality, chitosan, coatings
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