Effect of pre-treatment conditions before coating chitosan solution on the change in weight, total soluble solids content, and vitamin C of ‘Tu Quy’ mango during storage

Abstract

    This study was conducted to evaluate the effects of pretreatment combined with chitosan preparations on the preservation efficiency of ‘Tu Quy’ mango. The changes in weight, total soluble solid content, and vitamin C content of post-harvest ‘Tu Quy’ mango pre-treated with chlorine before storage with chitosan solution were evaluated. The results showed that the most suitable treatment conditions were determined to be washing with 200 ppm chlorine for 15 minutes and then blanching with warm water at 50 ℃ for 5 minutes before being coated with 1 % chitosan using the dipping method. Under this treatment condition, the change in weight loss (12.96 %), total soluble solids content (12.15 %), and vitamin C (15.09 mg/100 g) after 13 days of storage at 30 ℃ were lowest, helping to reduce post-harvest losses of ‘Tu Quy’ mango. Through literature review, there have been no studies on evaluating the effectiveness of preserving ‘Tu Quy’ mango treated with chlorine and hot water combined with chitosan. The results of the project can contribute to improving economic efficiency for growers, traders, transporters, and exporters of ‘Tu Quy’ mango.