Research Concerning the Changes in Hydro Soluble Vitamins in the Wheat Grain After a Month Attack by Rhizoperta Dominica

Abstract

Wheat grains are, in general, good sources of thiamine (vitamin B1), pyridoxine (vitamin B6), niacin, inozitol, biotin and vitamin E. They also contain important amounts of pantotenic acid (vitamin B5). Vitamin A is absent in wheat grains.The goal of our research was to monitor quantitative changes in hydro soluble vitamins in wheat grains damaged by Rhizoperta dominica.They have published relatively few data about the effects of insect infestation on the vitamins in wheat grains.Insects are one of the main causes of the losses produced in stored cereals and seeds. (Munro,1966). Rhizoperta dominica F. infests cereals and develops inside the grains thus producing the ‘hidden infestation’ of the cereals.
 Bio-chemical analyses through modern methods, we used a chromatographic equipment for liquids, model Shimadzu 10 AD-VP.Quantitative changes the lipids and fat acids were monitored on a number of 5 sample variants infested with 25, 50, 75, and 100 insects of Rhizoperta dominica, respectively.According to the results we obtained, we can note that after a month of attack by Rhizoperta dominica F., the quantity of hydrosoluble vitamins destroyed by these differs to some extent, in relation to the number of insects that infested and attacked the wheat sample.After a month from the initial attack we could see that the insects from species Rhizoperta dominica F. degrade in a higher proportion vitamins B2 and B6. 25 insects destroy about 1.39% B1, 3.98% vitamin B2 and 7.84% vitamin B6, and the 100 insects 44.95% more vitamin B2 and 14,15% more vitamin B6 than 25 insects