Journal
FOOD CHEMISTRY
Volume 155, Issue -, Pages 105-111Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.foodchem.2014.01.026
Keywords
Chitosan; Asparagus; Fusarium concentricum; Antifungal activity; Spore germination
Funding
- Natural Science Foundation of the Technology Planning Project of Zhejiang Province of China [2011C12031]
- National Science Foundation of China [21102129]
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The antifungal activity and effect of high-molecular weight chitosan (H-chitosan), low-molecular weight chitosan (L-chitosan) and carboxymethyl chitosan (C-chitosan) coatings on postharvest green asparagus were evaluated. L-chitosan and H-chitosan efficiently inhibited the radial growth of Fusarium concentricum separated from postharvest green asparagus at 4 mg/ml, which appeared to be more effective in inhibiting spore germination and germ tube elongation than that of C-chitosan. Notably, spore germination was totally inhibited by L-chitosan and H-chitosan at 0.05 mg/ml. Coated asparagus did not show any apparent sign of phytotoxicity and maintained good quality over 28 days of cold storage, according to the weight loss and general quality aspects. Present results inferred that chitosan could act as an attractive preservative agent for postharvest green asparagus owing to its antifungal activity and its ability to stimulate some defense responses during storage. (C) 2014 Elsevier Ltd. All rights reserved.
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