AI Article Synopsis
- The study addresses the economic losses in citrus fruits post-harvest due to spoilage and highlights the need for safe, natural preservatives, as synthetic ones pose health and environmental risks.
- Researchers identified a biocontrol fungus, Chaetomium globosum QY-1, which exhibits antimicrobial, antioxidant, and tyrosinase inhibition properties, making it a promising natural preservative.
- Metabolite profiling revealed eight polyketones, with CheA showing significant effectiveness against the common citrus pathogen Penicillium digitatum and metabolites like Epicoccone demonstrating high antioxidant and tyrosinase inhibitory activities, suggesting they could serve as effective alternatives to synthetic preservatives.
Article Abstract
The huge economic loss of citrus fruit after harvest called for safe and efficient preservatives, as chemically synthesized agents threatened the environment and human health. Herein a biocontrol fungus Chaetomium globosum QY-1 near the orchard in riparian area was identified to have antimicrobial, antioxidant and tyrosinase inhibition activity, which meets the requirements of an ideal preservative. Metabolite profiling based on bioassay-guided fractionation was carried out, and eight polyketones were determined by MS and NMR. The most abundant CheA exhibited strong inhibition to Penicillium digitatum, the main pathogen caused citrus fruit rot. Among these metabolites, Epicoccone and Epicoccolide B showed higher antioxidant activity, while Epicoccone and CheA had higher tyrosinase inhibitory activity. All the activities were close to or even better than the positive control (Vc; glutathione; Vc and arbutin; Bellkute), implying that the metabolites of C. globosum had comprehensive effects as natural preservatives.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1016/j.foodchem.2021.130959 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Want AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!