Hydrogels based on a graft copolymer of acrylic acid (AA) and acrylamide (AAm) backbone starch, obtained from different natural sources, have been prepared characterized for potential agricultural use, as soil moisture regulators nutrient sources plant nutrition. Five types starch are used: corn, waxy wheat, potato, rice starch. by solution polymerization method, in the presence ammonium persul...

Hydration of cross-linked starch microspheres, commercially available as a medical device, was investigated using a multi-method approach. We found that the uptake of water is accompanied by substantial swelling and changes of the polymer structure. Sorption calorimetry provided information about thermodynamics of water sorption, revealed presence of isothermal glass transition and absence of h...

In humans, nonstarch polysaccharides (NSP), such as arabinoxylans (AX), are not digested in the upper gut and provide fermentable carbon sources for bacteria growing in the large bowel. Despite the ubiquity of AX in nature, the microbiologic and physiologic consequences of AX digestion in the gut are poorly understood. In this study, we investigated the breakdown of ferulic acid-cross-linked AX...

This paper puts forward a novel non-ionic augmentation system, namely, gelation of native starch in the presence of borax and papermaking fibers. Native starch was blended with high concentration pulp and auxiliary agents. After pasting, the starch gel adhered onto fiber surfaces. However, an excess dosage of agents led to a rigid structure and poor gel strength. Starch became gelatinized and t...

Polyvinyl alcohol (PVA)-based films containing Chinese bayberry tannin (BT) were prepared by cross-linking using glyoxal, glutaraldehyde and dialdehyde starch, individually. The presence of cross-linkers was evident to promote the transparency decrease moisture content PVA/BT films, while water solubility stayed almost unchanged in cross-linked films. All provided promotion vapor permeability, ...

Several physical and chemical treatments were employed to modify Taro (Colocasia esculenta) starch. Th e eff ects of pH and heating temperature on their swelling powers and solubilities were studied. At 95 oC, heat-moisture treated, oxidized and acetylated starches were more soluble, while cross-linked starch was less soluble as compared to raw starch. Heat-moisture treated and chemically modif...