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US 9,434,788 B2Granted
Bio-based fiber gums (BFGs) and processes for producing BFGs
AssigneeThe United States of America as represented by the Secretary of Agriculture
InventorsMadhav P. Yadav, Kevin B. Hicks, David Johnston, Kyle A. Hanah, Triveni P. Shukla
Life of this patent
Estimating the term…
Abstract
Processes for the preparation of bio-based fiber gums and products produced by these processes and some of their uses.
Claims21
A process for the preparation of bio-based fiber gums comprising:
- (a) mixing agricultural materials with a heated alkaline solution at temperatures in the range of about 75° to about 150° C. to form a slurry;
- (b) separating out the insoluble components from said slurry to yield a solution having a pH of about 9 to about 14 wherein said solution contains about 0.1 to about 10 wt % solids wherein said solids are alkaline soluble fractions;
- and one of the following:
- (c) evaporating said solution to about 16 to about 23 wt % solids and drying to a powder;
- (d) adjusting the pH of said solution to a pH of about 2 to about 12, evaporating said solution to about 16 to about 23 wt % solids and drying to a powder;
- (e) evaporating said solution to about 16 to about 23 wt % solids, adjusting the pH of said solution to a pH of about 2 to about 12 and drying to a powder;
- (f) evaporating said solution to about 16 to about 23 wt % solids and precipitating out said soluble components with about two to about five volumes of solvent to form a precipitate and a supernatant, and separately drying said precipitate and said supernatant;
- (g) evaporating said solution to about 16 to about 23 wt % solids, adjusting the pH of said solution to a pH of about 2 to about 12 and precipitating out said soluble components with one to five volumes of organic solvent to form a precipitate and a supernatant, and separately drying said precipitate and said supernatant;
- (h) adjusting the pH of said solution to a pH of about 2 to about 12, evaporating said solution to about 16 to about 23 wt % solids and precipitating out said soluble components with about one to five volumes of organic solvent to form a precipitate and a supernatant, and separately drying said precipitate and said supernatant;
- or
- (i) adjusting the pH of said solution to a pH of about 2 to about 5 to precipitate Hemicellulose A and the remaining solution is treated with about 2 volumes of solvent to form a precipitate and a supernatant, and separately drying said precipitate and said supernatant;
- and
- optionally the solution is pretreated with at least one of the following:
- (1) de-salting said solution and the de-salted solution becomes the solution;
- (2) processing said solution through at least one nano-filtration membrane or ultra-filtration membrane or diafiltration membrane and the permeate becomes the solution;
- or
- (3) processing said solution through at least one nano-filtration membrane or ultra-filtration membrane or diafiltration membrane and the retentate becomes the solution wherein said process does not utilize oxidizing agents and wherein said product contains feruloyl-arabinoxylans.
14 more elements
A product produced by a process of comprising
- (a) mixing agricultural materials with a heated alkaline solution at temperatures in the range of about 75° to about 150° C. to form a slurry;
- (b) separating out the insoluble components from said slurry to yield a solution having a pH of about 9 to about 14 wherein said solution contains about 0.1 to about 10 wt % solids wherein said solids are alkaline soluble fractions;
- and one of the following:
- (c) evaporating said solution to abort 16 to about 23 wt % solids and drying to a powder;
- (d.) adjusting the pH of said solution to a pH of about 2 to about 12, evaporating said solution to about 16 to about 23 wt % solids and drying to a powder;
- (c) evaporating said solution to about 16 to about 23 wt % solids, adjusting of said solution to a pH of about 2 to about 12 and drying to a powder;
- (f) evaporating said solution to about 16 to about 23 wt % solids and precipitating out said soluble components with about two to about five volumes of organic solvent to form a precipitate and a supernatant, and separately drying said precipitate and said supernatant;
- (g) evaporating said solution to about 16 to about 23 wt % solids, adjusting the pH of said solution to a pH of about 2 to about 12 and precipitating out said soluble components with one to five volumes of organic solvent to form a precipitate and a supernatant, and separately drying said precipitate and said supernatant;
- (h) adjusting the pH of said solution to a pH of about 2 to about 12, evaporating said solution to about 16 to about 23 wt % solids and precipitating out said soluble components with about one to five volumes of organic solvent to form a precipitate and a supernatant, and separately drying said precipitate and said supernatant;
- or
- (i) adjusting the pH of said solution to a pH of about 2 to about 5 to precipitate Hemicellulose A and the remaining solution is treated with about 2 volumes of organic solvent to form a precipitate and a. supernatant, and separately drying said precipitate and said supernatant;
- and
- optionally the solution is pretreated with at least one of the following:
- (1) de-salting said solution and the de-salted solution becomes the solution;
- (2) processing said solution through at least one nano-filtration membrane or ultra-filtration membrane or diafiltration membrane and the permeate becomes the solution;
- or
- (3) processing said solution through at least one nano-filtration membrane or ultra-filtration membrane or diafiltration membrane and the retentate becomes the solution;
- wherein said process does not utilize oxidizing agents and wherein said product contains feruloyl-arabinoxylans.
15 more elements
An oil-in-water or water-in-oil composition comprising (a) a product as an emulsifier, (b) oil and (c) water;
- wherein said product is prepared by a process comprising
- (a) mixing agricultural materials with a heated alkaline solution at temperatures in the range of about 75° to about 150°C to form a slurry;
- (b) separating out the insoluble components from said slurry to yield a solution having a pH of about 9 to about 14 wherein said solution contains about 0.1 to about 10 wt % solids wherein said solids are alkaline soluble fractions;
- and one of the following:
- (c) evaporating said solution to about 16 to about 23 wt % solids and drying to a powder;
- (d) adjusting the pH of said solution to a pH of about 2 to about 12, evaporating said solution to about 16 to about 23 wt % solids and drying to a powder;
- (e) evaporating said solution to about 16 to about 23 wt % solids, adjusting the pH of said so ion to a pH of about 2 to about 12 and drying to a powder;
- (f) evaporating said solution to about 16 to about 23 wt % solids and precipitating out said soluble components with about two to about five volumes of organic solvent to fonn a precipitate and a supernatant, and separately drying said precipitate and said supernatant;
- (g) evaporating said solution to about 16 to about 23 wt h% solids, adjusting the pH of said solution to a pH of about 2 to about 12 and precipitating out said soluble components with one to five volumes of organic solvent to form a precipitate and a supernatant, and separately drying said precipitate and said supernatant;
- (h) adjusting the pH of said solution to a pH of about 2 to about 12, evaporating said solution to about 16 to about 23 wt % solids and precipitating out said soluble components with about one to five volumes of organic solvent to form a precipitate and a supernatant, and separately drying said precipitate and said supernatant;
- or
- (i) adjusting the pH of said solution to a pH of about 2 to about 5 to precipitate Hemicellulose A and the remaining solution is treated with about 2 volumes of organic solvent to form a precipitate and a supernatant, and separately drying said precipitate and said supernatant;
- and
- optionally the solution is pretreated with at least one of the following:
- (1) de-salting said solution and the de-salted solution becomes the solution;
- (2) processing said solution through at least one nano-filtration membrane or ultra-filtration membrane or diafiltration membrane and the permeate becomes the solution;
- or
- (3) processing said solution through at least one nano-filtration membrane or ultra-filtration membrane or diafiltration membrane and the retentate becomes the solution;
- wherein said process does not utilize oxidizing agents and wherein said product contains feruloyl-arabinoxylans.
16 more elements
Dependencies are inferred from the claim text.