Measurement of (b*) factor
The results showed that all coatings have been soaring, but the highest changes were observed in 60%chitosan + 20% aloe vera coverage (Fig 3). Hassani et al. (2012) found that coating have not been effective in reducing b* factor, which is consistent with our results. This may be due to the inhibition of the coverage of chlorophyll (II) breakdown or reduction in the synthesis of anthocyanin and carotenoids. Coating quince samples during storage show an increase in b* factor (Akbarian et al. 2014).