The japonica (JR) and indica (IR) rice starches were modified by acetylation, hydroxypropylation, cross-linking, and dual modification (cross-linked acetylation and cross-linked hydroxypropylation) and the effects of single and dual chemical modifications of JR and WR on the physicochemical properties were investigated. The JR had a greater substitution degree of acetyl or hydroxypropyl groups ...

Recently natural polysaccharides have been developed as environmentally friendly materials for removing toxic pollutants from aqueous solutions. Amongst numerous polysaccharides starch is an abundant, inexpensive, renewable and fully biodegradable natural raw material. The main criterion in the design of modified starch with substantial stability is fast complexation of toxic pollutants. A new ...

Resistant starches are non-digestible starches that are fermented in the colon by microbiota. These carbohydrates are prebiotic and can be beneficial to consumer health. Many types of resistant starch exist with varying physical properties that may result in differences in fermentability. The objective of this research project was to compare potential prebiotic effects and fermentability of fou...

Evaluation of the variations in spectra of the amylose-iodine complex of starches and amyloses from various botanical sources provide a useful aid for identification and characterization of these substances. Variations in absorptivity, wavelengths of maximum absorbance, and the slopes of the absorbance peaks provide characteristic data for starches as a result of variations in amylose molecular...

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...

Native rice starch lacks the versatility necessary to function adequately under rigorous industrial processing, so modified starches are needed to meet the functional properties required in food products. This work investigated the impact of enzymatic hydrolysis and cross-linking composite modification on the properties of rice starches. Rice starch was cross-linked with epichlorohydrin (EPI) w...

Partial waxy (reduced-amylose) and fully waxy (amylose-free) tetraploid durum wheats (Triticum turgidum L. var durum) were developed by introgression of null alleles at the Wx-A1 and Wx-B1 loci from common hexaploid wheat (Triticum aestivum L.). Purified starches were obtained from each genotype, and chemically modified by: 1) cross-linking with phosphorus oxychloride, 2) substitution with prop...

Bilayer tablets of aceclofenac sodium were developed using carboxymethylated white yam (Dioscorea rotundata) starch (CWY) for a fast release layer (2.5, 5.0, and 7.5% w/w), and acid-hydrolyzed bitter yam (Dioscorea dumetorum) starch (ABY) for a sustaining layer (27% w/w). Sodium starch glycolate (SSG) and hydroxypropyl methyl cellulose (HPMC) were used as standards. The starches were characteri...