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Botryticidal Activity of Nanosized Silver‐Chitosan Composite and Its Application for the Control of Gray Mold in Strawberry
Author(s) -
Moussa Shaaban H.,
Tayel Ahmed A.,
Alsohim Abdullah S.,
Abdallah Reda R.
Publication year - 2013
Publication title -
journal of food science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.772
H-Index - 150
eISSN - 1750-3841
pISSN - 0022-1147
DOI - 10.1111/1750-3841.12247
Subject(s) - botrytis cinerea , mycelium , mold , hypha , chitosan , antifungal , composite number , chemistry , horticulture , food science , biology , botany , materials science , microbiology and biotechnology , composite material , biochemistry
Botrytis cinerea Pers, the gray mold fungus, is among the most dangerous plant pathogens that cause great losses in agricultural crops. The botryticidal activities of nanosized silver (nano Ag), fungal chitosan (CTS) irradiated fungal chitosan (IrCTS), and nano Ag‐IrCTS composite were investigated. All of the examined materials exhibited powerful antifungal activity against B. cinerea . The most effective compound was nano Ag‐IrCTS composite with a minimal inhibitory concentration of 125 μ g/mL. The microscopic examination, of treated B. cinerea with the composite, revealed that an obvious alteration in mycelial shape was appeared accompanied and moderate lysis in fungal hyphae. With the prolongation of treatment, most of the fungal mycelia were lysed into small and elastic fragments. The consequence of strawberries coating, with antifungal composite based solution, was the disappearance of gray mold infection signs in 90% of the contaminated fruits after 7 d of storage, treated fruits had a fresh‐like appearance at the end of storage. Coating with nano Ag‐IrCTS solution could be highly recommended regarding its efficiency in prohibiting B. cinerea growth, preventing gray mold decay and enhancing the overall quality of coated strawberry fruits.