Journal
INTERNATIONAL JOURNAL OF FOOD MICROBIOLOGY
Volume 118, Issue 2, Pages 164-172Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.ijfoodmicro.2007.07.002
Keywords
Colletotrichum acutatum; Alternaria alternata; Botrytis cinerea; hexanal; beta-cyclodextrins; post harvest
Categories
Ask authors/readers for more resources
Natural occurring volatiles such as hexanal have a well know antifungal capacity but limited post harvest use due to their volatility. Taking this into consideration, hexanal was inserted into beta-cyclodextrins (beta-CD) to develop a controlled release mechanism and then evaluated in vitro against Colletotrichum acutatum, Alternaria alternata and Botrytis cinerea, the three main causes of post harvest diseases in berries. Different concentrations of both pure volatile hexanal and its inclusion complexes (IC) were analyzed for their fungistatic and fungicidal effects for 7 days at 23 degrees C. Hexanal has fungistatic effect on all fungi tested, however, fungicidal activity was only observed on C. acutatum. Results showed that hexanal's effectiveness was greater against C. acutatum than A. alternata and B. cinerea. Concentrations of 1. 1, 2.3 and 1.3 mu L hexanal/L air respectively were necessary to prevent C. acutatum, A. alternata and B. cinerea growth. Lower concentrations reduced fungal growth depending on the included amount and type of fungus. Same amount of hexanal released from beta-cyclodextrin had a lower antifungal effect on C. acutatum. Thus, lCs beta-cyclodextrin-hexanal can be used to reduce or avoid post harvest berry diseases because of their capacity to provide an antifungal volatile during storage, distribution, and consumer purchasing. (C) 2007 Elsevier B.V. All rights reserved.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available