title: Effect of peanut tannins on percent seed colonization and in vitro growth by Aspergillus parasiticus.
abstract: The relationship between tannin content of mature, intact, cured peanut seed and percent seed colonization by Aspergillus parasiticus was examined. Tannin content in 9 cultivars, 7 of which were grown in both Tifton, Georgia and Puerto Rico, was significantly correlated with percent seed colonization. For data expressed as mg tannin/g intact seed and mg tannin/g seed coat, correlation coefficients with percent colonization were 0.74 and 0.76, respectively. Seed coat tannin, methanol-extracted, water-soluble material from peanut seed coats, was tested in vitro for effects on growth of A. parasiticus. As concentrations of tannins were increased to 7.5%, inhibition of fungal growth increased linearly to 88%; a concentration of 20% produced over 96% inhibition.
mesh_terms: D010367:Arachis; D001230:Aspergillus / Q000187:drug effects* / Q000254:growth & development; D012639:Seeds / Q000382:microbiology; D013634:Tannins / Q000494:pharmacology*
chemical_list: D013634:Tannins