Radiation chemistry of amino acids and peptides in aqueous solutions. [Gamma radiation]

Journal Article · Sun Jan 01 04:00:00 EST 1978 · J. Agric. Food Chem.; (United States)

DOI:https://doi.org/10.1021/jf60215a054· OSTI ID:7286980

Simic, M G

Radiation chemistry relevant to radiation preservation of high protein foods is reviewed. Some conclusions concerning the chemistry of irradiated amino acids, peptides, and proteins have been derived from product analysis of ..gamma..-irradiated solutions while the main mechanistic considerations result from the chemistry and kinetics of free radical intermediates observed by pulse radiolysis. The precursors of chemistry in not too concentrated solutions (<1 M) are the water radicals e/sub aq//sup -/, OH, and H. Their reactivity with molecules and their preference for characteristic groups within the molecule are discussed. The reviewed reactions of the model systems are accountable for a variety of radiolytic products found in irradiated foods. From detailed understanding of radiation chemistry in aqueous and frozen systems formation of many classes of compounds can be predicted or entirely eliminated in order to corroborate and extend the conclusions reached from the animal feeding experiments concerning the formation of toxic, mutagenic, and carcinogenic compounds and/or reduction of the nutritional value of foods.

• Research Organization: Army Natick Research and Development Command, MA
• OSTI ID: 7286980
• Journal Information: J. Agric. Food Chem.; (United States), Journal Name: J. Agric. Food Chem.; (United States) Vol. 26:1; ISSN JAFCA
• Country of Publication: United States
• Language: English

Related Subjects

560132* -- Radiation Effects on Microorganisms-- Food Preservation-- (-1987)
63 RADIATION, THERMAL, AND OTHER ENVIRON. POLLUTANT EFFECTS ON LIVING ORGS. AND BIOL. MAT.
AMINO ACIDS
AQUEOUS SOLUTIONS
CARBOXYLIC ACIDS
CHEMICAL RADIATION EFFECTS
CHEMICAL REACTIONS
CHEMISTRY
DECOMPOSITION
DISPERSIONS
ELECTROMAGNETIC RADIATION
FOOD
GAMMA RADIATION
IONIZING RADIATIONS
IRRADIATION
MIXTURES
ORGANIC ACIDS
ORGANIC COMPOUNDS
PEPTIDES
PRESERVATION
PROTEINS
RADIATION CHEMISTRY
RADIATION EFFECTS
RADIATIONS
RADIOLYSIS
RADIOPRESERVATION
SOLUTIONS