Der Pharma Chemica
Journal for Medicinal Chemistry, Pharmaceutical Chemistry, Pharmaceutical Sciences and Computational Chemistry
ISSN: 0975-413X
Abstract
Rheological properties of Wild yam(Discorea villosa) and Aerial yam(Discorea bulbifera)
Author(s): Adewole E, Ogunmodede O.T, Adeniran O.A and Lajide LThe starch powdered samples were analyzed for their Rheological properties using Rapid Visco Analyser. From the graph of RVU versus Time, it was discovered that in aerial yam as the temperature is increased, the starch granules swell and increase the viscosity of the starch paste until the peak viscosity is reached(390.92). A highpeakviscosity corresponds with a high thickening power of starch, this peak is higher than that of wild yam (-2.92). The pasting time for aerial yam (86.50) was the same with that of wild yam(86.35). Also the breakdown for aerial yam (20.50) was higher than that of wild yam( 0.50).The set back(retrogradation) for aerial yam(128.83) was higher than that of wild yam(0.50). The peak time for aerial yam(5.60) was lower than that of wild yam(7.00).The trough1 for aerial yam (262.08) was higher than that of wild yam(-3.50. The peak value for aerial yam(282.58) was higher than that of wild yam(-3.00). The starches of aerial yam can be use in pharmaceutical industries as binding tablet, stabilizer and as or thickening agent.
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