The degradation of VC was postponed and the VC contents in
experimental groups exceeded 20% comparing CK. The rate of
transformation of pectin slowed down too; the soluble pectin content
of experimental groups was 0.25% lower than that of CK on
day 16. These results suggest that the bentonite coatings affected
the fruits’ metabolic activity. The coating inhibits mass transfer
of water and gases such as carbon dioxide and oxygen. It also could
absorb ethylene formed during the ripening and decay processes of
fruit. Therefore, the appearance of the mangos was preserved and
shelf life was extended at room temperature. Bentonite/potassium
sorbate coatings on mango showed the best results in all tested
quality and physiological indexes, it is inferred to be the combined
effect of bentonite and potassium sorbate