منابع مشابه
Rice grain quality: related properties and effective factors
Rice provides food for more than half of the world's population. Unlike other cereals used in the form of processed, rice is mostly consumed directly with removal of paddy and brown husks. Therefore, considering rice grain quality is one of the main factors in product marketability and consumption. Rice grain quality can be considerd and evaluated by assessment of four properties: physical, che...
متن کاملPrediction of Long-Grain Rice Texture and Pasting Properties From Starch and Protein Fractions
The objective of this study was to determine predictive models of rice functionality from protein and starch chemistry data. One long-grain rice variety (Cocodrie) was harvested from two fields in Arkansas. Rice was harvested from 8 locations in each field. Samples were then stored at 21oC/50% RH until equilibrated to a storage moisture content of 12%. Texture properties were measured using a T...
متن کاملA novel factor FLOURY ENDOSPERM2 is involved in regulation of rice grain size and starch quality.
Rice (Oryza sativa) endosperm accumulates a massive amount of storage starch and storage proteins during seed development. However, little is known about the regulatory system involved in the production of storage substances. The rice flo2 mutation resulted in reduced grain size and starch quality. Map-based cloning identified FLOURY ENDOSPERM2 (FLO2), a member of a novel gene family conserved ...
متن کاملEnzymes of starch metabolism in the developing rice grain.
The levels of starch, soluble sugars, protein, and enzymes involved in starch metabolism-alpha-amylase, beta-amylase, phosphorylase, Q-enzyme, R-enzyme, and starch synthetase -were assayed in dehulled developing rice grains (Oryzasativa L., variety IR8). Phosphorylase, Q-enzyme, and R-enzyme had peak activities 10 days after flowering, whereas alpha- and beta-amylases had maximal activities 14 ...
متن کاملMechanical, thermal and structural properties of rice starch films reinforced with rice starch nanocrystals
A rice starch based film, reinforced with starch nanocrystals (prepared by submitting native granules of rice starch to acid hydrolysis at 40 oC) was prepared by casting film-solution on leveled trays. The influence of the content of starch nanocrystals (5 to 30%) on the mechanical, thermal and structural properties of rice starch films was investigated. The rice starch films showed an increase...
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ژورنال
عنوان ژورنال: Journal of the Japanese Society of Starch Science
سال: 1992
ISSN: 1884-488X,0021-5406
DOI: 10.5458/jag1972.39.11