Effect of gamma-irradiation on the occurrence of pathogenic microorganisms and nutritive value of four principal cereal grains

Applied Radiation and Isotopes : Including Data, Instrumentation and Methods for Use in Agriculture, Industry and Medicine
N H AzizA Shahin Azza

Abstract

The effects of (60)Co gamma-photon-irradiation on the natural occurrence of pathogenic microorganisms in four principal cereal grains and on amino acids and vitamins in these cereals were investigated. The total numbers of aerobic bacteria were reduced by three logarithmic decades when grains were given a dose of 10kGy. Coliforms and "coagulase- positive" staphylococci were inhibited by a dose of 1kGy, whereas fungi were inhibited by a dose of 5kGy. The 15kGy dose eliminated viable microorganisms in cereal grains, and about 10-30 colony-forming units of Clostridium sp. per gram of grain survived after this dose. The dose of 10kGy did not cause any measurable destruction of total amino acids. Thiamin was reduced by 22-33% and riboflavin by 10-16% after a dose of 10kGy. Irradiation did not increase the acid values significantly, but did increase the peroxide values, which was not accompanied by the off-odors of cereals. We conclude that the overall dose of 10kGy is very effective for microbial decontamination of cereal grains, and does not adversely affect the nutritional quality of cereal grains.

Citations

Jan 3, 2013·International Journal of Food Microbiology·Kitiya SuhemNirundorn Matan
Aug 28, 2009·Applied Radiation and Isotopes : Including Data, Instrumentation and Methods for Use in Agriculture, Industry and Medicine·S M'Garrech, F Ncib
Mar 8, 2014·Journal of the Science of Food and Agriculture·Monica R Nemţanuİsmail Erper
Apr 21, 2009·Applied Radiation and Isotopes : Including Data, Instrumentation and Methods for Use in Agriculture, Industry and Medicine·R BraghiniB Corrêa
Jan 17, 2012·FEMS Microbiology Ecology·Anja KristiansenJeppe L Nielsen
Jan 8, 2019·Journal of Environmental Science and Health. Part. B, Pesticides, Food Contaminants, and Agricultural Wastes·Ana-Marija DomijanBranka Mihaljević
Dec 18, 2020·Comprehensive Reviews in Food Science and Food Safety·Anjaly PaulChinnaswamy Anandharamakrishnan
Aug 8, 2020·Toxicology Reports·Amal S HathoutAhmed S M Fouzy
Feb 20, 2021·Brazilian Journal of Biology = Revista Brasleira De Biologia·M A Abdelaleem, K F Al-Azab

❮ Previous
Next ❯

Related Concepts

Related Feeds

Aspergillosis

Aspergillosis is the name given to a wide variety of diseases caused by infection by fungi of the genus Aspergillus. Aspergillosis occurs in chronic or acute forms which are clinically very distinct. Most cases of acute aspergillosis occur in patients with severely compromised immune systems. Chronic colonization or infection can cause complications in people with underlying respiratory illnesses. Discover the latest research on aspergillosis here.

Aspergillosis (ASM)

Aspergillosis is the name given to a wide variety of diseases caused by infection by fungi of the genus Aspergillus. Aspergillosis occurs in chronic or acute forms which are clinically very distinct. Most cases of acute aspergillosis occur in patients with severely compromised immune systems. Chronic colonization or infection can cause complications in people with underlying respiratory illnesses. Discover the latest research on aspergillosis here.