Study on great northern beans (Phaseolus vulgaris): effect of drum drying process on bean flour properties and effect on gamma radiation on bean starch properties

Thesis/Dissertation · Fri Jan 01 04:00:00 EST 1988

OSTI ID:6409083

Rayas-Solis, P

Great Northern bean (Phaseolus vulgaris L.) drum dried flours at native pH of 6.54, pH 6 and 7 showed reduced activities of trypsin inhibitor, ..cap alpha..-amylase inhibitor, hemagglutinating titer, and nitrogen solubility. Electrophoretic analyses showed a slight modification of the native bean proteins, and the presence of at least four trypsin inhibitors. The study of the effect of 2.5-20 kGy irradiation doses on Great Northern beans showed essentially no modification of the electrophoretic mobility of the storage proteins or the trypsin inhibitors. Nitrogen solubility and hemagglutinating activity were essentially unchanged. With the 20 kGy dose, decrease in ..cap alpha..-amylase inhibitor activity, decrease reactive/available lysine content, and decrease cooking time of the irradiated beans after 11 months of storage were observed. Taste panel results indicated that the control and 20 kGy irradiated bean were significantly different at 5% level. At 20 kGy dose, the beans developed a partially water soluble brown color.

• Research Organization: Nebraska Univ., Lincoln (USA)
• OSTI ID: 6409083
• Country of Publication: United States
• Language: English

Related Subjects

560140* -- Radiation Effects on Plants
63 RADIATION, THERMAL, AND OTHER ENVIRON. POLLUTANT EFFECTS ON LIVING ORGS. AND BIOL. MAT.
BACTERIA
BIOLOGICAL EFFECTS
BIOLOGICAL RADIATION EFFECTS
CARBOHYDRATES
CHEMICAL PROPERTIES
DOSE-RESPONSE RELATIONSHIPS
ELECTROMAGNETIC RADIATION
ELECTROPHORESIS
ENZYME INHIBITORS
GAMMA RADIATION
IONIZING RADIATIONS
LEGUMINOSAE
MAGNOLIOPHYTA
MAGNOLIOPSIDA
MICROORGANISMS
ORGANIC COMPOUNDS
PHASEOLUS
PLANTS
POLYSACCHARIDES
PROTEINS
RADIATION EFFECTS
RADIATIONS
REAGENTS
RHIZOBIUM
SACCHARIDES
SEEDS
STARCH