Abstract
Peanut kernels (Tainan 9, a Spanish cultivar) inoculated with Aspergillus parasiticus, A. flavus, A. niger, or A. ochraceus as well as noninoculated kernels were incubated in a humidified environment (relative humidity, 100%) at 25(deg)C for 7 weeks. Internal fungal populations and changes in moisture and sucrose content and free amino acid composition of the kernels were determined periodically. Fungal populations determined by using A. flavus and A. parasiticus agar and rose bengal chlortetracycline agar as enumerating media were closely correlated. Moisture content in the kernels increased from 5.8 to 20.4% (dry basis), and changes in individual free amino acid contents varied, depending upon the incubation time and type of fungus used as an inoculum. In the early infection period (up to 5 weeks), sucrose contents and logarithms of threonine and tyrosine contents increased while logarithms of free glutamic acid content decreased linearly with incubation time. A negative linear relationship was further obtained between logarithms of fungal populations and the logarithm of free glutamic acid content (R(sup2) > 0.80) of the infected peanut kernels.
Publisher
American Society for Microbiology
Subject
Ecology,Applied Microbiology and Biotechnology,Food Science,Biotechnology
Reference26 articles.
1. Ahmed E. A. and C. T. Young. 1982. Composition quality and flavor of peanuts p. 655-688. In H. E. Pattee and C. T. Young (ed.) Peanut science and technology. American Peanut Research and Education Society Inc. Yoakum Tex.
2. Association of Official Analytical Chemists. 1984. Official methods of analysis. Association of Official Analytical Chemists Arlington Va.
3. Soluble sugar composition of peanut seed;Basha S. M.;J. Agric. Food Chem.,1992
4. Comparison of Aspergillus differential medium and Aspergillus flavus/parasiticus agar for enumerating total yeasts and molds and potentially aflatoxigenic aspergilli in peanuts, corn meal and cowpeas;Beuchat L. R.;J. Food Prot.,1984
5. Bewley J. D. and M. Black. 1994. Seeds: physiology of development and germination 2nd ed. p. 273-292. Plenum Press New York N.Y.
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