1.66 18.6 Insect infestation. The loss may have been caused by contamination from uric acid, a protein metabolite of insects, as well as by increases in fat acidity and microbial contamination, and perhaps even to losses in grain fractions. It is possible, therefore, that natural resistance to insect infestation exists, and thus chaser cooperation should be established to identify the nature of this resistance in order to increase it to alleviate storage problems, reduce chemical treatment for insect control, maintain nutritive value, and insure increased efficiency of processing. Milling Most staple foods as well as other foods of vegetable and animal origin are processed for consumption. Although not universally used, in certain regions of the world, too legumes are milled to remove the seed coat before the application of thermal processing.
Storage conditions have significant quantitative and qualitative effects on legume milling.
Milling of food legumes is carried out by household and commercial methods involving the same basic principles. Both procedures have disadvantages. The dry method has the disadvantage of high milling losses caused by breakage of cotyledons and Powdering. Furthermore, the loosening of the seed coat in this process is not adequate, and even less so when the drying operation of beans before storage has not been satisfactory. Milling techniques have been developed to maximize the yield of edible fractions, and data have been obtained suggesting that the genetic make-up of the cultivars also plays an important role in yield of edible fractions.