Pre-Harvest Prophylaxis for Infestation Control in Stored Food-Grains
STORED food-grains suffer from considerable losses due to insect infestations in the tropical and subtropical regions of the world1. During post-harvest storage, cross-infestation by insect pests and the multiplication of pests as a result of field-infestation occur in stored grains even within a storage period of a few months in warehouses2–3. Fumigation with noxious gases such as methyl bromide, carbon disulphide, carbon tetrachloride, hydrocyanic acid, ethylene oxide and others, although of use in the control of most infestations, is not easy for the producer or the warehouse-man to apply2. Parkin1 observed that application of such measures unfortunately lags behind the advance of knowledge in all but the most highly developed countries, and even in those is not always so widespread or up-to-date as it could be. A new approach has therefore been made to replace the fumigation treatment with a relatively simpler prophylactic spray treatment of the grain under pre-harvest condition, using a chemical of low toxicity for mammals, for the control of pest infestation during post-harvest storage.
A provisional assessment of malathion for stored‐product insect control
Malathion has properties which make it generally suitable for use for stored products, but the non-persistent disagreeable odour evident during mixing and application is a disadvantage. Its stability to heat, moisture, and alkalinity needs more detailed assessment. It has low mammalian toxicity and outstanding toxicity to Oryzaephilus surinamensis and Tribolium castaneum, beetles which are often not easily controlled under practical conditions by other insecticides suitable for use in food stores. It also shows promise of value for the control of several other species of stored-product insects, but Ptinus tectus beetles have been found to be resistant to it.
Enumeration of total coliforms, fecal coliforms, and Escherichia coli in foods by hydrophobic grid membrane filter: supplementary report.
Raw, comminuted poultry meat was used to determine the specificity of the media and incubation conditions used in the hydrophobic grid membrane filter method. Confirmation rates for target colonies were 100% for total coliforms, 98% for fecal coliforms, and 97-99% for Escherichia coli. The results of total coliform enumeration in 30 pasteurized milk samples by both the hydrophobic grid membrane filter method and AOAC method 46.013-46.016 are also reported.