Chitosan combined with organic acid: Organic acids are weak acids and do not dissociate completely in water, whereas the strong mineral acids do. Contrary to the use of mineral acids, organic acids are easy to handle, non-corrosive in nature, biodegradable and cause
no harm to the coated fruit and vegetable.They have been used as substitutes for sulfite to prevent enzymatic browning, alone or in combination with antimicrobial agent [18]. The effect of chitosan coating combined with phytic acid on the preservation of fresh cut
lotus root was investigated