Effect of combined gamma-irradiation and storage on biochemical changes in sweet potato
Sucrose of uncured Red Jewel sweet potato increased from 3.8% to 10.7% after a combined treatment of a 300 Krad dose (/sup 60/Co) and 4 days storage at 24/sup 0/C post-irradiation (PI). Starch decreased from 16.8% to 6.1% after 16 days following a 500 Krad treatment. Phosphorylase, phosphoglucomutase and sucrose phosphate synthase enzyme specific activities increase 2.4-, 1.8- and 1.3-fold, respectively, after 3 days PI following 200 Krad exposures compared to nonirradiated roots. The beta-Amylase, phosphoglucose isomerase and sucrose synthase specific activities increased 1.2-fold. Sucrose synthesis in the irradiated sweet potato was attributed to beta-amylase, phosphorylase, phosphoglucomutase, phosphoglucose isomerase and sucrose synthase.
- Research Organization:
- Univ. of Georgia, Athens (USA)
- OSTI ID:
- 6865880
- Journal Information:
- J. Food Sci.; (United States), Journal Name: J. Food Sci.; (United States) Vol. 53:2; ISSN JFDSA
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
60 APPLIED LIFE SCIENCES
BETA DECAY RADIOISOTOPES
BETA-MINUS DECAY RADIOISOTOPES
BIOCHEMICAL REACTION KINETICS
BIOLOGICAL EFFECTS
BIOLOGICAL RADIATION EFFECTS
BIOSYNTHESIS
CARBOHYDRATES
COBALT 60
COBALT ISOTOPES
DISACCHARIDES
ENZYME ACTIVITY
INTERMEDIATE MASS NUCLEI
INTERNAL CONVERSION RADIOISOTOPES
IRRADIATION
ISOMERIC TRANSITION ISOTOPES
ISOTOPES
KINETICS
MINUTES LIVING RADIOISOTOPES
NUCLEI
ODD-ODD NUCLEI
OLIGOSACCHARIDES
ORGANIC COMPOUNDS
PRESERVATION
RADIATION EFFECTS
RADIOISOTOPES
RADIOPRESERVATION
REACTION KINETICS
SACCHARIDES
SACCHAROSE
STORAGE
SYNTHESIS
TUBERS
YEARS LIVING RADIOISOTOPES