期刊
JOURNAL OF AGRICULTURAL SCIENCE AND TECHNOLOGY
卷 23, 期 2, 页码 319-331出版社
TARBIAT MODARES UNIV
关键词
Prunus armeniaca L.; Fruit postharvest; Fruit storage; Response surface methodology
The formulation of an edible coating based on gum tragacanth and chitosan was optimized for fresh apricots using Response Surface Methodology (RSM). The study found that the coating could improve apricot firmness and stability during storage, with ideal concentrations of 1.02% gum tragacanth and 0.33% chitosan in the coating.
Formulation of an edible coating based on gum tragacanth and chitosan was optimized for fresh apricots by Response Surface Methodology (RSM). The effects of the concentration of gum tragacanth and chitosan (independent variables) on soluble solids content, weight loss, titratable acidity, pH, reducing sugar, moisture content, and firmness (response variables) were studied. The results showed that the obtained RSM models were fitted for all response variables, except for soluble solids content and titratable acidity. Gum tragacanth and chitosan treatments significantly decreased the weight loss of the apricots during storage. The firmness of apricots was increased at higher concentrations of gum tragacanth. The pH of the apricots was lower at lower concentrations of gum tragacanth and chitosan. This work showed that the coating could improve apricot firmness and stability in terms of weight loss, pH, and moisture content during storage, and increase the commercial value of the product. To meet the desirable properties, the ideal concentrations of gum tragacanth and chitosan in the coating were 1.02 and 0.33% (w/v), respectively.
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