Modified biopolymers, such as, charge-modified biopolymers, cross-linked biopolymers, and cross-linked, charged modified biopolymers are provided along with methods of producing and using the same.

Disclosed herein are embodiments of a superabsorbent polymer (SAP) that exhibit superior properties as compared to current commercial SAPs. The disclosed SAPs are useful in a variety of sanitary products and can be made using cost effective methods.

A starch-containing microsphere has a particle size that exhibits polydispersity with uniform distribution in a particle size concentrated distribution interval. The particle size distribution in the particle size concentrated distribution interval has the following features: equal division of the particle size concentrated distribution interval into n intervals, and a microsphere percentage in each interval is formula (I),

[00001]$\begin{array}{cc}\frac{100}{n}.Math..Math.\%\frac{1.Math.0}{n}.Math..Math.\%,& \left(I\right)\end{array}$

where n is an integer greater than 1. The preparation method of the starch-containing microsphere includes: first reacting starch with a low concentration of epichlorohydrin, and then reacting the resultant product with a surfactant, followed by final crosslinking to give microspheres. The starch-containing microspheres thus prepared are polydisperse starch-containing microspheres with a uniform particle size distribution, with the particle size being in a range of 0.1-500 m.

A starch-containing microsphere has a particle size that exhibits polydispersity with uniform distribution in a particle size concentrated distribution interval. The particle size distribution in the particle size concentrated distribution interval has the following features: equal division of the particle size concentrated distribution interval into n intervals, and a microsphere percentage in each interval is formula (I),

[00001]$\begin{array}{cc}\frac{100}{n}.Math..Math.\%\frac{1.Math.0}{n}.Math..Math.\%,& \left(I\right)\end{array}$

where n is an integer greater than 1. The preparation method of the starch-containing microsphere includes: first reacting starch with a low concentration of epichlorohydrin, and then reacting the resultant product with a surfactant, followed by final crosslinking to give microspheres. The starch-containing microspheres thus prepared are polydisperse starch-containing microspheres with a uniform particle size distribution, with the particle size being in a range of 0.1-500 m.

The present invention provides a polysaccharide supported fluorinating agents which can be used in fluorination reactions. The invention particularly describes a new bacterial cellulose supported tetra-n-butyl ammonium fluoride complex [NBu.sub.4(Bac-Cell-OH)F] which is stable and non-hygroscopic. The invention further relates to a process for fluorination using the [NBu.sub.4(Bac-Cell-OH)F] complex.

The present invention provides a polysaccharide supported fluorinating agents which can be used in fluorination reactions. The invention particularly describes a new bacterial cellulose supported tetra-n-butyl ammonium fluoride complex [NBu.sub.4(Bac-Cell-OH)F] which is stable and non-hygroscopic. The invention further relates to a process for fluorination using the [NBu.sub.4(Bac-Cell-OH)F] complex.

This invention relates to new destructured starch derivatives and elastomer compositions containing them. In particular this invention relates to destructured starch silyl ethers in which at least one oxygen atom of the destructured starch is covalently bonded to at least one silicon atom and/or to at least one compound containing silicon.

Compositions and methods related to powdered hemostats that crosslink during and/or after application to a bleeding site are generally described.

Compositions and methods related to powdered hemostats that crosslink during and/or after application to a bleeding site are generally described.

Provided herein are common starch-based and waxy starch-based hydrolyzed starches. The hydrolyzed starches described herein demonstrate desirable properties over existing hydrolyzed starches for food applications, including but not limited to, dairy, ready-to-eat cereal coatings, clean-label confectionary products, nutritional and cereal bars, crumb chocolate, infant and/or elderly nutrition.