Statistically and causally meaningful relationships are established between starch molecular structure (the molecular distribution of branched starch and the chain length distribution of debranched starch) and texture (hardness and stickiness) of cooked rice grains. The amounts of amylose chains with degree of polymerization (DP) 100-20,000, and of long amylopectin chains, positively correlated...

This research study analysed the rheological properties of potato amylose and potato amylopectin in binary solutions of the following water and dimethyl sulfoxide concentrations: 90% DMSO (1), 80% DMSO (2) and 50% DMSO (3), with preparation methodology involving the dissolution at the temperature of 98°C. The studies of dynamic light scattering on the biopolymer coils and the determination of m...

Abstract Biodegradable materials have lower production costs, they are easy to work with, and environmentally friendly too. Bioplastics can use natural organic wastes, such as nopal, sargassum, banana peel, corn, algae a variety of products. There is also the synthesis characterization these new bioplastics, however, very little known their electronic structure materials. This study analyzes in...

A procedure was developed for the separation and purification of amylose and amylopectin isolated from cotton leaves. Cotton leaves were homogenized in 0.02 molar phosphate buffer at pH 7.0 containing HgCl(2) plus toluene. Crude starch granules were collected by centrifugation and partially purified by treating with acetone and toluene. The starch granules were then dispersed in dimethylsulfoxi...

16 Starches with different amylopectin contents and different molecular sizes prepared 17 using acid hydrolysis were hydrophobically modified using octenylsuccinic anhydride 18 (OSA). The OSA-modified starches were used as surfactants to stabilize emulsions of 19 β-carotene and canola oil dispersed in water. The objective of this study is to 20 investigate the relationship between starch molecu...

Endogenous factors responsible for the textural characteristics of buckwheat products were studied. An analysis with various buckwheat samples showed that there were variations in protein, starch, amylose and amylopectin contents among the various buckwheat flours examined. The protein contents of the buckwheat flours were significantly negatively-correlated to the starch, amylose and amylopect...

Starch is a major component of human diets. The relative contribution of variation in the genes of starch biosynthesis to the nutritional and functional properties of the rice was evaluated in a rice breeding population. Sequencing 18 genes involved in starch synthesis in a population of 233 rice breeding lines discovered 66 functional SNPs in exonic regions. Five genes, AGPS2b, Isoamylase1, SP...

A number of studies have reported the beneficial effects of the organic matter on the bioavailability of P in different soil types. These effects have been attributed to several factors, including the possible formation of phospho-metal-humic complexes, which could protect P from retrogradation in both acid and alkaline-calcareous soils. However, the experimental evidence supporting the existen...