THE EFFECT OF TYPE AND AMOUNT ON FORMING PLASTICIZER AND PROPERTIES OF EDIBLE FILM FROM CORN HUSK
The purpose of this research was to study the plasticizer on edible film- forming from waxy corn, sweet corn and flint corn by adding 3 types of plasticizer which were composed of glycerol, sorbitol and glycol with the concentration at 20, 25 and 30% and analyzed physical and chemical properties. The results found that edible film from 5 grams of flint corn husk powder was added glycerol at concentration 30% could be the best form that was 0.79-0.93 mm thick. The moisture content was 9.61-18.50%. The solubility valued 66.91-77.35% and the water vapor transmission rate (WVTR) was 420.07-500.31 g/m2hr. Finally, the edible film from corn husk was applied for shelf life extension by coating strawberries and compared with the non-coating as the control group. It was found that the coating strawberries for 3 days had withered and soften without microorganism spoilage.
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