摘要:
A composition for and a method of eliciting in a vertebrate a protective immune response against an eukaryotic parasite are disclosed. The method includes administering to the vertebrate a composition having a carrier group coupled to an oligosaccharide obtained from a lipoglycan found on the surface of an eukaryote. The composition is administered in an amount sufficient to elicit a protective immune response against the parasite.
摘要:
The invention concerns a purified polysaccharide consisting of glucose, galactose, glucuronic acid, galacturonic acid, and pyruvate mannose, combined in a repeat hexasaccharide unit of formula (I), said polysaccharide comprising n saccharide units of formula (I), n being not less than 1. Said polysaccharide is useful in particular in the agri-foodstuff sector.
摘要:
In one aspect, the invention provides methods for separating a corn fiber lipid fraction from corn fiber and novel corn fiber oils prepared therefrom. In another aspect, the invention provides methods of obtaining derivatizable cellulose from corn fiber and methods preparing cellulose esters and ethers therefrom. Still further, the invention provides methods of extracting arabinoxylan from corn fiber and novel arabinoxylan esters and ethers prepared therefrom. Yet further, the invention provides methods of extracting monosaccharides from corn fiber.
摘要:
This invention provides reduced molecular weight gellan gums. The reduced molecular weight gellan gums of this invention generally have a weight average molecular weight less than about 1.7 X 106, and typically in a range of about 1.2 X 106 to about 9.3 X 105. This invention also provides compositions, e.g., solutions and gels, comprising reduced molecular weight gellan gums. The reduced molecular weight gellan gums of this invention may be prepared by any method which reduces the molecular weight of polymers. Such methods include homogenization, sonication, radiation, oxidation and hydrolysis.
摘要:
Synthetic polysaccharides are disclosed containing 8-24 monosaccharide units made up of a concatenation of disaccharides consisting of a uronic acid and a hexose, wherein the hydroxyl groups of the polysaccharides are etherified with a C1-6 alkyl group or esterified in the form of a sulpho group, each disaccharide being at least monoetherified; and salts thereof, are disclosed.
摘要:
A method of producing a gel material and which comprises firstly providing an aqueous soluble hemicellulosic starting medium which is free of glucans and obtainable from testaceous plant material. The starting medium is then extracted with a non-acidic reagent and reacted with an oxidising system comprising at least one peroxide, together with at least one oxygenase (such as a peroxidase). A gel material which is obtainable from a hemicellulosic starting medium, and which is substantially free of glucans and pectins. The gel material comprises a polysaccharide network for a matrix of polysaccharide chain segments and a multiplicity of cross-linking ferulate bridges. The ferulate bridges are located at regular intervals along the cross-linked segments.