ศูนย์นวัตกรรมเทคโนโลยีหลังการเก็บเกี่ยว

Application of plant extracts for controlling fungal infestation of grains and seeds during storage.

Scholz, K.; Vogt, M.; Kunz, B.;

Modern fungicides and antifungal compounds II. 12th International Reinhardsbrunn Symposium, Friedrichroda, Thuringia, Germany, 24th-29th May 1998. Year: 1999 Pages: 429-435 Ref: 14 ref.

1999

บทคัดย่อ

The antifungal potential of 5 plant extracts (allspice (Pimenta dioica), cinnamon (Cinnamomum zeylanicum), cloves (Syzygium aromaticum), oregano (Origanum vulgare) and savory (Satureja hortensis)) was tested in vitro against 1 relevant field fungus (Fusarium oxysporum) and 6 relevant storage fungi (Aspergillus candidus, A. versicolor, P. aurantiogriseum, P. brevicompactum, P. citrinum and P. griseofulvum) and in situ against the initial mycoflora of wheat grains after harvest (mainly Fusarium spp., Alternaria spp. and Cladosporium spp.). Pure clove extract caused a complete growth suppression of all target moulds in vitro. The antifungal potential of the other extracts was in the following order with decreasing activity: allspice, oregano, savory, cinnamon extract. In the in situ assays with wheat (cv. Astron), only clove extract was able to inhibit completely the growth of the initial mycoflora on the wheat grains at concentrations of 50 and 100 %. Furthermore, the phytotoxic effects of the ext

racts on the wheat germ were determined in situ. Concentrations of clove extract needed to suppress fungal growth on the grains showed a high phytotoxic effect on the germ. When germination of such grains was investigated under practical conditions in soil, no obvious reduction of the germination rate was observed. These results provide a basis for the treatment of wheat grains with a natural antifungal product to control fungal growth during storage.