Journal
FOOD CHEMISTRY
Volume 437, Issue -, Pages -Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.foodchem.2023.137899
Keywords
Cornstarch-based films; Physicochemical properties; Plasticizer; Erythritol; Mannitol
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Corn films based on corn starch were fabricated and different plasticizers were incorporated to study their physicochemical characteristics. The effects of different ratios of plasticizers on starch modification were investigated. The results showed that increasing the proportion of D-mannitol could improve the performance of corn starch films.
In this study, corn films based on corn starch were fabricated through the casting method, and various plasticizers (namely, erythritol and D-mannitol) were incorporated. The study delved into the gelatinization and physicochemical characteristics of these corn starch-based films. Additionally, the impact of different ratios of plasticizers on reductive gelatinization was assessed using RVA analysis. The investigation also encompassed the effects of varying plasticizer ratios on starch granule expansion, amylose dissolution, and amylopectin melting. Interestingly, as the proportion of D-mannitol increased, there were gradual increases in film thickness, water content, and water contact angle, alongside decreases in water vapor permeability, crystallinity, and water solubility of the corn starch-based films. In essence, this research provides a fundamental basis for potential industrial applications of corn starch-based films.
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