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Applied and Environmental Microbiology, January 2003, p. 562-567, Vol. 69, No. 1
0099-2240/03/$08.00+0     DOI: 10.1128/AEM.69.1.562-567.2003
Copyright © 2003, American Society for Microbiology. All Rights Reserved.

Acetic Acid Increases Stability of Silage under Aerobic Conditions

H. Danner,* M. Holzer, E. Mayrhuber, and R. Braun

Department of Environmental Biotechnology, Institute for Agrobiotechnology (IFA-Tulln), A-3430 Tulln, Austria

Received 29 April 2002/ Accepted 20 October 2002

The effects of various compounds on the aerobic stability of silages were evaluated. It has been observed that inoculation of whole-crop maize with homofermentative lactic acid bacteria leads to silages which have low stability against aerobic deterioration, while inoculation with heterofermentative lactic acid bacteria, such as Lactobacillus brevis or Lactobacillus buchneri, increases stability. Acetic acid has been proven to be the sole substance responsible for the increased aerobic stability, and this acid acts as an inhibitor of spoilage organisms. Therefore, stability increases exponentially with acetic acid concentration. Only butyric acid has a similar effect. Other compounds, like lactic acid, 1,2-propanediol, and 1-propanol, have been shown to have no effect, while fructose and mannitol reduce stability.

* Corresponding author. Mailing address: Department of Environmental Biotechnology, Institute for Agrobiotechnology (IFA-Tulln), Konrad Lorenz Straße 20, A-3430 Tulln, Austria. Phone: 43-2272-66280-558. Fax: 43-2272-66280-503. E-mail: danner{at}ifa-tulln.ac.at.

Applied and Environmental Microbiology, January 2003, p. 562-567, Vol. 69, No. 1
0099-2240/03/$08.00+0     DOI: 10.1128/AEM.69.1.562-567.2003
Copyright © 2003, American Society for Microbiology. All Rights Reserved.



This article has been cited by other articles:

  • Schmidt, R. J., Hu, W., Mills, J. A., Kung, L. Jr. (2009). The development of lactic acid bacteria and Lactobacillus buchneri and their effects on the fermentation of alfalfa silage. J DAIRY SCI 92: 5005-5010 [Abstract] [Full Text]  
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