Insect and Fungal Response to Sorbic Acid-Treated Wheat During Storage in South China
Authors: Dunkel, F.; Lung, Pu Zhe; Chuan, Liang; Yin, Huang Fan
Source: Journal of Economic Entomology, Volume 75, Number 6, December 1982 , pp. 1083-1088(6)
Publisher: Entomological Society of America
Abstract:In laboratory and field experiments, sorbic acid (2,4-hexadienoic acid) was tested as a protectant against insects and molds for wheat harvested and stored in South China during the rainy season. Procedures for incorporating sorbic acid with the kernels or milled products were compatible with current local agricultural practices. Sorbic acid (at 0.3 and 1.0%, wt/wt) was dry mixed with wheat (22% moisture content) in the laboratory and combined with wheat harvested at 41% moisture content under current commune conditions. At levels approved for human consumption (0.3%, wt/wt), sorbic acid suppressed the F1 generation of Rhyzopertha dominica (F.), Sitotroga cerealella (Olivier), and Sitophilus zeamais Motschulsky "≥85%. The growth of Aspergillus flavus Link and other storage fungi was reduced ≥58% from surface-sterilized kernels. At 1.0% (wt/wt) sorbic acid, there was ≥91% suppression of the F1 produced by the aforementioned insects as well as Sitophilus oryzae (L.) on polished and unpolished rice and Tribolium castaneum (Herbst) on whole wheat flour. At 1% sorbic acid, there also was no visible mold growth for 72 days and no growth from surface-sterilized kernels 42 days after exposure to insects. Although the field-treated wheat experienced a slower growth rate of fungi and an increased rate of drying, it was not as dramatic an effect as in the laboratory. The wheat provided for the field experiment, however, was 20% higher than wheat normally harvested at that season in the same commune.
Document Type: Research Article
Publication date: December 1, 1982
- Journal of Economic Entomology is published bimonthly in February, April, June, August, October, and December. The journal publishes articles on the economic significance of insects and is divided into the following sections: apiculture & social insects; arthropods in relation to plant disease; forum; insecticide resistance and resistance management; ecotoxicology; biological and microbial control; ecology and behavior; sampling and biostatistics; household and structural insects; medical entomology; molecular entomology; veterinary entomology; forest entomology; horticultural entomology; field and forage crops, and small grains; stored-product; commodity treatment and quarantine entomology; and plant resistance. In addition to research papers, Journal of Economic Entomology publishes Letters to the Editor, interpretive articles in a Forum section, Short Communications, Rapid Communications, and Book Reviews.
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