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. 2022 May 11:9:882742.
doi: 10.3389/fnut.2022.882742. eCollection 2022.

Antimicrobial Activity, Microstructure, Mechanical, and Barrier Properties of Cassava Starch Composite Films Supplemented With Geranium Essential Oil

Bin Wang  1   2 , Shouxin Yan  1   2 , Lizhong Qiu  3 , Wei Gao  1   2 , Xuemin Kang  1   2 , Bin Yu  1   2 , Pengfei Liu  1   2 , Bo Cui  1   2 , A M Abd El-Aty  1   4   5
Affiliations

Antimicrobial Activity, Microstructure, Mechanical, and Barrier Properties of Cassava Starch Composite Films Supplemented With Geranium Essential Oil

Bin Wang et al. Front Nutr. .

Abstract

In this study, we prepared cassava starch-based films by the casting method. Afterwards, the effects of geranium essential oil (GEO) on the prepared films' physicochemical, morphology, and antibacterial properties were revealed. We found that the thickness and elongation at the break of cassava starch films increased with increasing GEO concentration (from 0.5, 1, and 2%). However, increasing GEO concentration decreased the water content, water vapor permeability, and tensile strength of the prepared films'. Further, the addition of GEO increased the surface roughness, opacity, and antibacterial properties of the prepared films. With the increase of GEO concentration, L * and a * of cassava starch film decreased, while b * and Δ E increased. This study provides a theory for cassava starch-based films as a biological packaging material.

Keywords: antibacterial effect; cassava starch-based films; food packaging; packaging biomaterial; physicochemical properties.

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Conflict of interest statement

LQ was employed by Zhucheng Xingmao Corn Developing Co., Ltd. The remaining authors declare that the research was conducted in the absence of any commercial or financial relationships that could be construed as a potential conflict of interest.

Figures

Figure 1
Figure 1
Typical atomic force microscopy (AFM) images of cassava starch-based films (5 and 10 μm): (A) Control (5 μm), (B) 0.5% (5 μm), (C) 1% (5 μm), and (D) 2% (5 μm), (a) Control (10 μm), (b) 0.5% (10 μm), (c) 1% (10 μm), and (d) 2% (10 μm).
See this image and copyright information in PMC

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