Fmc Corporation

William C Snow

Donald Walter Renn

Samuel Nochumson

William A Hills

Joseph C Richards

Lisa E Dumont

Jonathan H Morgan

Foner P Curtis

Mikhail V Ostrovsky

David L Harper

Irradiated or nonirradiated substantially pure .beta.-1,3-glucan polysaccharides, derivatives and coprocessed mixtures thereof with other hydrocolloids, methods for their preparation, and uses for the aqueous gels prepared from them, including their use in the electrophoresis of DNA, RNA, and their fragments.

.beta.-1,3-glucan polysaccharides, compositions, and their preparation

The invention provides an aqueous colloidal peroxygen composition comprising stable sols, gels and solids of C2 to C6 peroxycarboxylic acids with a polysaccharide gum, optionally with gum cross-linking agents such as boric acid, borate salts, urea and the like useful for delivering peracids in applications such as surface cleaners, detergent bleach, automatic dish washing formulations and the like. The compositions are particularly useful for sanitizing or bleaching at an acid or neutral pH compared with other chlorine or peroxygen bleach compounds.

Stable peracid sols, gels and solids

A nucleic acid sequencing gel comprising 2 to 10% of a gelling polysaccharide, preferably agarose; a denaturing agent, a non-gelling additive, preferably glycerol, and electrophoretic buffers. This composition is capable of resolving nucleic acid fragments having at least 50 bases and which differ from each other by at least one base.

Agarose compositions for nucleic acid sequencing

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Rockland, ME, United States of America

William C Snow