期刊
FOODS
卷 10, 期 12, 页码 -出版社
MDPI
DOI: 10.3390/foods10122897
关键词
potato chip byproducts; biobased films; alkaline catalyst; transesterification; single step; hydrophobicity; stretchability; water vapor barrier
资金
- Norte Portugal Regional Operational Programme (NORTE 2020), under the PT 2020 Partnership Agreement, through the European Regional Development Fund (ERDF)
- FSE
- FEDER through POCI [POCI-01-0247-FEDER-017938]
- FEDER through COMPETE 2020
- POCI
- PORL
- FCT through PIDDAC
- PT national funds (FCT/MCTES) [FCT UIDB/50006/2020, FCT UIDB/50011/2020, UIDP/50011/2020, FCT UIDB/50017/2020, UIDP/50017/2020, UIDP/00616/2020]
- FEDER, within the PT2020 Partnership Agreement and Compete 2020
- Portuguese NMR Network
- FCT [SFRH/BPD/117213/2016, CEECIND/00430/2017]
- [022161]
- Fundação para a Ciência e a Tecnologia [SFRH/BPD/117213/2016] Funding Source: FCT
The addition of spent frying oil (SFO) and KOH during starch-based film production can greatly improve the transparency, hydrophobicity, and flexibility of the films, making them more suitable for various applications. Experimental results using a one-step approach have shown the effectiveness of this method in enhancing material properties.
Starch is a promising candidate for preparing biodegradable films with useful gas barriers and thermoplastic capabilities. However, these materials are hydrophilic and brittle, thus limiting their application range. To overcome these drawbacks, it has been hypothesized that starch can be hydrophobized and plasticized during the starch-based film production using a single-step approach and following transesterification principles. In this work, KOH powder and spent frying oil (SFO) were used as an alkaline catalyst and a source for triacylglycerides, respectively, to promote the modification of starch. Different ratios of SFO (w/w related to the dried starch weight) were tested. When compared to the neat films (without a catalyst and SFO), the incorporation of at least 15% SFO/KOH gave rise to transparent, hydrophobic (water contact angles of ca. 90 degrees), stretchable (ca. 20x), elastic (ca. 5x), and water tolerant starch-based films, contrary to the films produced without the catalyst. ATR-FTIR and H-1 NMR revealed structural differences among the produced films, suggesting that starch was modified with the SFO-derived fatty acids. Therefore, adding KOH during the potato starch/spent frying oil-based film's production was determined to be a promising in situ strategy to develop starch-based materials with improved hydrophobicity and flexibility, while valorizing the potato chip industry's byproducts.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据