The aims of this work were to analyze the effects of high methoxyl pectin (HMP) and isomalt concentrations on the physical properties of pectin‐based films. Films were developed using HMP (1.5% and 3.0% w/v) and isomalt at different concentrations (0.25%, 0.50%, 0.75%, 1.0%, and 1.50% w/v). The use of isomalt produced an improvement in the physical properties of HMP films. Moisture of films increased and swelling degree decreased with a higher isomalt concentration. Films presented higher water vapor permeability (WVP) with an increase in HMP concentration. Likewise, WVP values decreased with an increase in isomalt concentration. The tensile properties of pectin‐based films varied with the use of isomalt. Increasing the amount of isomalt produced more deformable films (elongation at break increased) and led to an increase in the elasticity of HMP films (elastic modulus decreased). The films presented better qualities when obtained from using a 1.5% of HMP and 1.0% of isomalt.

中文翻译：

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以异麦芽酮糖醇为增塑剂的高甲氧基果胶膜的研制与表征

这项工作的目的是分析高甲氧基果胶（HMP）和异麦芽酮糖醇浓度对基于果胶的薄膜的物理性能的影响。使用HMP（1.5％和3.0％w / v）和异麦芽酮糖醇以不同浓度（0.25％，0.50％，0.75％，1.0％和1.50％w / v）显影薄膜。异麦芽酮糖醇的使用改善了HMP膜的物理性能。随着异麦芽酮糖醇浓度的升高，膜的水分增加，溶胀度降低。随着HMP浓度的增加，薄膜呈现出更高的水蒸气渗透性（WVP）。同样，WVP值随着异麦芽酮糖醇浓度的增加而降低。果胶基薄膜的拉伸性能随异麦芽酮糖醇的使用而变化。异麦芽酮糖醇的量增加产生更多的可变形膜（断裂伸长率增加），并导致HMP膜的弹性增加（弹性模量降低）。当使用1.5％的HMP和1.0％的异麦芽酮糖醇制得的薄膜具有更好的质量。