Abstract
Cassava starch films are fabricated with acetic acid treatment and ultrasonication. Different ultrasound power levels from 200 to 750 W are used and the effects of ultrasonication on the morphology, microstructures, and properties of the starch–acetic acid films are investigated. Scanning electron microscopy shows a cohesive and compact structure of the films resulting from ultrasonication. X-ray diffraction analysis reveals that the crystalline index is decreased by acid treatment and increased by ultrasonication. The tensile strength and elongation at break of the films first increase and then decrease with increasing ultrasound power level. Ultrasonication also results in higher opacity, higher water barrier performance, and lower water adsorption of the films. Thus, the results show that ultrasonication can be used as a simple and efficient way to modify the morphology, microstructure, and performance of starch–acetic acid films to better meet the application needs.
Original language | English |
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Article number | 2000094 |
Journal | Starch/Staerke |
Volume | 73 |
Issue number | 1-2 |
Early online date | 11 Aug 2020 |
DOIs | |
Publication status | Published - 1 Jan 2021 |
Bibliographical note
Publisher Copyright:© 2020 Wiley-VCH GmbH
Funding
This research was supported by the Innovation Project of Guangxi Graduate Education (No. GXUN‐CHXZS2019019). F.X. acknowledges support from the European Union's Horizon 2020 research and innovation programme under the Marie Skłodowska‐Curie grant agreement No. 798225. F.X. also thanks for support from the Guangxi Key Laboratory for Polysaccharide Materials and Modification, Guangxi University for Nationalities, China (Grant No. GXPSMM18ZD‐02). This research was supported by the Innovation Project of Guangxi Graduate Education (No. GXUN-CHXZS2019019). F.X. acknowledges support from the European Union's Horizon 2020 research and innovation programme under the Marie Sk?odowska-Curie grant agreement No. 798225. F.X. also thanks for support from the Guangxi Key Laboratory for Polysaccharide Materials and Modification, Guangxi University for Nationalities, China (Grant No. GXPSMM18ZD-02).
Funders | Funder number |
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Guangxi Key Laboratory for Polysaccharide Materials and Modification | |
Guangxi University for Nationalities, China | |
Innovation Project of Guangxi Graduate Education | GXUN‐CHXZS2019019 |
Horizon 2020 Framework Programme | |
Guangxi University for Nationalities | GXPSMM18ZD‐02 |
EU - Horizon 2020 | 798225 |
Keywords
- acetic acid
- cassava starch
- crystallinity
- physicochemical properties
- ultrasonication
ASJC Scopus subject areas
- Food Science
- Organic Chemistry