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Effect of ozone on spore germination, spore production and biomass production in two Aspergillus species

Antony-Babu, Sanjay; Singleton, Ian

Authors

Sanjay Antony-Babu



Abstract

The ability of ozone gas to reduce food spoilage is relatively well documented, but the developmental effects of the gas on food spoilage fungi are not well known. In this study two model aspergilli, Aspergillus nidulans and Aspergillus ochraceus were used to study the effects of ozone on spore germination, sporulation and biomass production. These effects were examined under three levels of ozone; two high level ozone exposures (200 and 300 $μ$mol mol−1) and one low level exposure (0.2 $μ$mol mol−1). The two species behaved noticeably different to each other. Ozone was more effective in reducing growth from spore inocula than mycelia. No spore production could be detected in A. nidulans exposed to continuous low level O3, whereas the same treatment reduced spores produced in A. ochraceus by 94{%}. Overall the work suggests that ozone exposure is an effective method to prevent spread of fungal spores in a food storage situation.

Citation

Antony-Babu, S., & Singleton, I. (2009). Effect of ozone on spore germination, spore production and biomass production in two Aspergillus species. Antonie van Leeuwenhoek, 96(4), 413-422. https://doi.org/10.1007/s10482-009-9355-2

Journal Article Type Article
Acceptance Date Jun 2, 2009
Online Publication Date Jun 17, 2009
Publication Date 2009-11
Deposit Date Jul 27, 2016
Journal Antonie van Leeuwenhoek
Print ISSN 0003-6072
Electronic ISSN 1572-9699
Publisher BMC
Peer Reviewed Peer Reviewed
Volume 96
Issue 4
Pages 413-422
DOI https://doi.org/10.1007/s10482-009-9355-2
Keywords Aspergillus nidulans, Aspergillus ochraceus, biomass, food spoilage, Micromorphology, ozone, spores,
Public URL http://researchrepository.napier.ac.uk/Output/318491
Publisher URL http://dx.doi.org/10.1007/s10482-009-9355-2