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Forest Products Laboratory
One Gifford Pinchot Drive
Madison, WI 53726-2398
Phone: (608) 231-9200
Fax: (608) 231-9592


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Title: Efficacy of Fatty Acid Chemistry: Candidate Mold and Decay Fungicides

Source: In: Proceedings One Hundred Sixth Annual Meeting of the American Wood Protection Association, Hyatt Regency Riverfront, Savannah, Georgia, May 23-25, 2010, pp. 287-297; 2010

Author(s)Coleman, Robert; Yang, Vina; Woodward, Bessie; Lebow, Patti; Clausen, Carol

Publication Year: 2010  View PDF »

Category: Conference Proceedings
Associated Research Project(s):   FPL-4723-4  FPL-4851-1A

Abstract: Although organic, lipophilic acids, such as acetic, propionic, sorbic and benzoic, have a long history as preservatives in the food industry, relatively high concentrations are required and their bioactivities generally pertain to retarding microbial growth rather than eliminating pathogens. Moreover, exclusive use of organic acids such as lactic or citric acid, alone, as broad-spectrum biocides, is generally not sufficient for long term control of mold fungi. However, specific organic acids (i.e., glycolic and Llactic), even at low concentrations, are now known to be potent synergists with certain fatty acids as broad-spectrum, environmentally compatible fungicides. Specifically, low molecular weight, aliphatic fatty acids (mono-carboxyl compounds such as pentanoic to decanoic acids or C5 to C 10) at various application rates +/-selected adjuvants have been examined as candidate mold and decay fungicides. Substantial evaluation of formulation homogeneity, stability of dilutions in water and fungicide activity of stable formulations, both for dip and pressure treated wood products, has been accomplished. Antimicrobial formulations having multiple mechanisms of action with greater formulation potency would be considerably more effective. The research effort is under a joint venture agreement between Summerdale, Inc. and Forest Products Laboratory (FPL), Madison, WI.

Keywords: Biodegradation; mold prevention; wood deterioration; wood-decaying fungi; wood preservatives; preserved wood; fungicides; antifungal agents; fatty acids; mold control; organic acids; southern pines; Aspergillus niger; Penicillium chrysogenum; Trichoderma viride; Alternaria alternata; leaching; stain fungi; Aureobasidium pullulans; Gloeophyllum trabeum; Postia placenta; Trametes versicolor; sweetgum; biocides; decay fungi; wood decay; decay resistance; preservative treated wood; treated wood; preservatives; southern yellow pine; fungicidal properties; wood decomposition

Publication Review Process: Informally Refereed (Peer-Reviewed)

File size: 253 kb(s)

Date posted: 03/08/2011

This publication is also viewable on Treesearch:  view
RITS Product ID: 37880
Current FPL Scientists associated with this product (listed alphabetically)
Clausen, Carol A.
Supervisory Research Microbiologist
Lebow, Patricia K.
Mathematical Statistician

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