Effect of gamma irradiation on physicochemical, functional and pasting properties of some locally-produced rice (Oryza spp) cultivars in Ghana

Effect of gamma irradiation on physicochemical, functional and pasting properties of some locally-produced rice (Oryza spp) cultivars in Ghana

Rice (Oryza sativa L.) is a staple crop in Ghana and much of West Africa, where it serves as an important convenience food for urban consumers. The objective of this study was to determine the effect of gamma irradiation as insect disinfestation technique on some physicochemical, functional and past...

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Bibliographic Details
Published in:Radiation physics and chemistry (Oxford, England : 1993) Vol. 130; pp. 196 - 201
Main Authors: Ocloo, Fidelis C.K., Owureku-Asare, Mavis, Agyei-Amponsah, Joyce, Agbemavor, Wisdom S.K., Egblewogbe, Martin N.Y.H., Apea-Bah, Franklin B., Sarfo, Adjoa, Apatey, John, Doku, Henry, Ofori-Appiah, Dora, Ayeh, Ernestina
Format: Journal Article
Language:English
Published: Oxford Elsevier Ltd 01-01-2017
Elsevier BV
Subjects:
Characteristics
Consumers
Convenience foods
Formulations
Gamma irradiation
Gamma rays
Properties (attributes)
Rice
Urban areas
Viscosity
XRD
Ghana
Gamma irradiation
XRD
Characteristics
Rice
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Summary:Rice (Oryza sativa L.) is a staple crop in Ghana and much of West Africa, where it serves as an important convenience food for urban consumers. The objective of this study was to determine the effect of gamma irradiation as insect disinfestation technique on some physicochemical, functional and pasting properties of selected locally-produced rice cultivars in Ghana. Four local rice cultivars and an imported (commercial) type were purchased, cleaned and irradiated at doses of 0.0, 0.25, 0.50, 0.75, 1.0 and 1.5kGy. The irradiated rice cultivars were milled and their physicochemical, functional and pasting properties determined. There were reductions in pH and swelling power, as well as increase in solubility of rice cultivars after gamma irradiation. Gamma irradiation did not change the XRD pattern of the rice cultivars. Gamma irradiation significantly (P<0.05) decreased peak time for BAL and VNT rice cultivars. Gamma irradiation significantly (P<0.05) decreased PV, HPV, BDV, FV and SBV for all the rice cultivars. This study shows that flours from gamma irradiated rice cultivars have potential in food formulations that require low viscosity. •Effect of gamma irradiation on properties of some rice cultivars in Ghana was investigated.•Gamma irradiation decreased pH and swelling power, whereas solubility increased.•Gamma irradiation did not change the XRD pattern of the rice cultivars.•Gamma irradiation decreased peak time for BAL and VNT rice cultivars.•Gamma irradiation decreased PV, HPV, BDV, FV and SBV for all the rice cultivars.
ISSN:0969-806X
1879-0895
DOI:10.1016/j.radphyschem.2016.08.025