期刊
JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY
卷 69, 期 3, 页码 945-954出版社
AMER CHEMICAL SOC
DOI: 10.1021/acs.jafc.0c08154
关键词
chitosan; riboflavin; chemical conjugate; antifungal; penicillium digitatum; antimicrobial photodynamic therapy
资金
- Facultad de Quimica y de Farmacia
- Direccio'n de Transferencia y Desarrollo of Pontificia Universidad Cato'lica de Chile
- Agencia Nacional de Investigacio'n y Desarrollo/PFCHA/Beca Doctorado Nacional 2017 [21170457]
A novel chemical conjugate between chitosan and riboflavin was synthesized and characterized, showing enhanced antifungal effect through antimicrobial photodynamic therapy. The conjugate exhibited the highest fungal growth inhibition at a dose of 0.5% w/v, suggesting it could be a promising alternative for fungicides used in citrus fruits postharvest.
A novel chemical conjugate between chitosan (CH) and riboflavin (RF) has been synthesized and characterized via Fourier transform infrared, NMR, and other spectroscopic methods. Photophysical and photochemical properties such as absorption spectra, fluorescence emission, fluorescence anisotropy, and singlet oxygen generation were characterized as well. This new biopolymer-based conjugate was designed to have an antifungal effect enhanced through antimicrobial photodynamic therapy. The antifungal effect of this conjugate (CH-RF) was compared with CH and RF against Penicillium digitatum in vitro. The conjugate showed the highest fungal growth inhibition of all systems tested at a dose of 0.5% w/v. This new biopolymer-based compound could be a promising alternative to fungicides used in citrus fruits postharvest.
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