Physicochemical Properties of Starch of Intermediate-Amylose and Waxy Rices Differing in Grain Quality

Starches from two crops of 7 intermediate‐amylose and 7 waxy milled rices differing in eating qualities were characterized. Among the nonwaxy rice starches, those of softer cooked rice had gelatinization temperature of ≥ 70°C, medium to soft gel (110 mg/2 ml) consistency, low alkali viscograph peak...

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Main Authors: Merca, F.E., Juliano, Bienvenido O.
Format: Journal Article
Language:Inglés
Published: Wiley 1981
Subjects:
Online Access:https://hdl.handle.net/10568/166545
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author Merca, F.E.
Juliano, Bienvenido O.
author_browse Juliano, Bienvenido O.
Merca, F.E.
author_facet Merca, F.E.
Juliano, Bienvenido O.
author_sort Merca, F.E.
collection Repository of Agricultural Research Outputs (CGSpace)
description Starches from two crops of 7 intermediate‐amylose and 7 waxy milled rices differing in eating qualities were characterized. Among the nonwaxy rice starches, those of softer cooked rice had gelatinization temperature of ≥ 70°C, medium to soft gel (110 mg/2 ml) consistency, low alkali viscograph peak viscosity, and greater Amylograph breakdown and lower Amylograph setback and consistency than low gelatinization temperature starches. Among waxy starches, gels of low gelatinization temperature samples had greater freeze‐thaw stability than gels of high gelatinization temperature samples. A 12% paste gave better differentiation in Amylograph viscosity than 10% paste of intermediate‐amylose milled rice. Water‐extractable substances that suppressed the Amylograph viscosity of milled waxy rices were lipids and polysaccharides.
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spelling CGSpace1665452025-05-14T10:39:54Z Physicochemical Properties of Starch of Intermediate-Amylose and Waxy Rices Differing in Grain Quality Merca, F.E. Juliano, Bienvenido O. physicochemical properties starch intermediate amylose waxy rices grain quality Starches from two crops of 7 intermediate‐amylose and 7 waxy milled rices differing in eating qualities were characterized. Among the nonwaxy rice starches, those of softer cooked rice had gelatinization temperature of ≥ 70°C, medium to soft gel (110 mg/2 ml) consistency, low alkali viscograph peak viscosity, and greater Amylograph breakdown and lower Amylograph setback and consistency than low gelatinization temperature starches. Among waxy starches, gels of low gelatinization temperature samples had greater freeze‐thaw stability than gels of high gelatinization temperature samples. A 12% paste gave better differentiation in Amylograph viscosity than 10% paste of intermediate‐amylose milled rice. Water‐extractable substances that suppressed the Amylograph viscosity of milled waxy rices were lipids and polysaccharides. 1981-01 2024-12-19T12:56:22Z 2024-12-19T12:56:22Z Journal Article https://hdl.handle.net/10568/166545 en Wiley Merca, F. E.; Juliano, B. O. 2006. Physicochemical Properties of Starch of Intermediate-Amylose and Waxy Rices Differing in Grain Quality. Starch Stand#228;rke, Volume 33 no. 8 p. 253-260
spellingShingle physicochemical properties
starch
intermediate amylose
waxy rices
grain
quality
Merca, F.E.
Juliano, Bienvenido O.
Physicochemical Properties of Starch of Intermediate-Amylose and Waxy Rices Differing in Grain Quality
title Physicochemical Properties of Starch of Intermediate-Amylose and Waxy Rices Differing in Grain Quality
title_full Physicochemical Properties of Starch of Intermediate-Amylose and Waxy Rices Differing in Grain Quality
title_fullStr Physicochemical Properties of Starch of Intermediate-Amylose and Waxy Rices Differing in Grain Quality
title_full_unstemmed Physicochemical Properties of Starch of Intermediate-Amylose and Waxy Rices Differing in Grain Quality
title_short Physicochemical Properties of Starch of Intermediate-Amylose and Waxy Rices Differing in Grain Quality
title_sort physicochemical properties of starch of intermediate amylose and waxy rices differing in grain quality
topic physicochemical properties
starch
intermediate amylose
waxy rices
grain
quality
url https://hdl.handle.net/10568/166545
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