AI Article Synopsis
- Polysaccharide films with protein additives show promise in agriculture and food, but their effectiveness is hindered by the incompatibility between hydrophobic proteins and hydrophilic polymers.
- This research improves compatibility by using a chemical crosslinking method involving zinc ions from curcumin-loaded zeolitic imidazolate framework-8 (Cur-ZIF-8) with chitosan (CS) and zein, leading to significantly enhanced properties such as elongation at break and oxygen barrier capabilities.
- Additionally, the improved composite (Cur-ZIF-8/CS/Zein) exhibits excellent antibacterial and antioxidant properties, and effectively extends the freshness of litchis by at least 8 days, highlighting its potential for broader applications
Article Abstract
Polysaccharide films containing protein additives have good application prospects in agriculture and food field. However, interfacial incompatibility between hydrophobic proteins and hydrophilic polymers remains a major technical challenge. In this work, the interfacial compatibility between hydrophobic zein and hydrophilic chitosan (CS) is improved by the chemical crosslinking between zinc ions of curcumin-loaded zeolitic imidazolate framework-8 (Cur-ZIF-8) with CS and zein. With the improvement of interface compatibility, the results show that the elongation at break and O barrier property of synthesized Cur-ZIF-8/CS/Zein are 9.2 and 1.5 times higher than CS/Zein, respectively. And the Cur-ZIF-8/CS/Zein exhibits superior antibacterial and antioxidant properties as well. Importantly, Cur-ZIF-8/CS/Zein can also be used as an intelligent-responsive release platform for curcumin. As a result, Cur-ZIF-8/CS/Zein can keep the freshness and appearance of litchi at least 8 days longer than that of CS/Zein. Therefore, this study provides a novel method to improve the interfacial compatibility between hydrophobic proteins and hydrophilic polymers, and is expected to expand the application of protein/polymer composites in agriculture and food field.
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| http://dx.doi.org/10.1016/j.carbpol.2023.120612 | DOI Listing |
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