Study on the Fresh-Keeping Effect of Polylactic Acid Composite Bags with Different Thickness on Fruit Corn
In order to study the fresh-keeping effect of polylactic acid(PLA)composite bag with different thickness on fruit corn,fruit corn was packaged in polylactic acid(PLA)/polyadipic acid(PBAT)composite bag(25%PLA+70%PBAT+5%starch)with thickness of 0.01 mm and 0.02 mm and stored in 0℃/85%RH environment for 28 days.The weight loss rate,crumpling rate,spoilage rate,kernel hardness,soluble sugar,soluble solid,vitamin C and total acid contents of fruit corn were determined every 7 days.The results showed that 0.01 mm thick PLA/PBAT composite storage bag could significantly reduce the shrinkage rate,hardness and total acid content of fruit corn,slow down the consumption of soluble sugar,soluble solid,vitamin C and other nutrients,so as to maintain the edible quality and commercial value of fruit corn,and extend its shelf life.This study provides a theoretical basis and basis for the research and application of polylactic acid(PLA)composite fresh-keeping bag in the fresh-keeping technology of fruit corn.
fruit cornthicknesspolylactic acidcomposite storage bagfresh-keeping effect
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