Process for making chitin derivatives

• US 9,708,634 B2
• Filed: 12/19/2014
• Issued: 07/18/2017
• Est. Priority Date: 06/23/2011
• Status: Active Grant

• Current Assignee: AMVAC Chemical Corporation (American Vanguard Corporation)
• Original Assignee: Agrinos AS (American Vanguard Corporation)
• Inventors: Lpez-Cervantes, Jaime
• Primary Examiner(s): Knight, Teresa E
• Application Number:
  US14/577,999
• Publication Number:
  US 20150111255A1
• Time in Patent Office: 942 Days
• Field of Search: 4352524
• CPC Class Codes: C12N 9/20 Triglyceride splitting, e.g. by means of lipase
• CPC Class Codes: C12P 19/04 Polysaccharides, i.e. compounds containing more than five saccharide radicals attached to each other by glycosidic bonds
• CPC Class Codes: C12P 19/26 Preparation of nitrogen-containing carbohydrates

Abstract

Disclosed is a process comprising (1) forming an aqueous mixture comprising a microbial composition and solid chitin, wherein said microbial composition comprises one or more microbes that produce chitin digesting enzymes; and (2) fermenting the mixture for a time sufficient to enzymatically digest all or part of the chitin to form a fermented mixture comprising chitosan and glucosamine. In some embodiments, the chitin is derived from the biodegradation of chitin containing marine Arthropods. In other embodiments, the chitin is obtained from chitin containing fungi, filamentous fungi and yeast which is extracted via a chemical process. In yet another embodiment, the chitin is obtained by the biodegradation of chitin containing fungi, filamentous fungi, yeast and/or insects, preferably using HQE for the digestion. In some embodiments, the process is carried out with a solution that already contains chitosan and/or glucosamine such as HYTb, the aqueous fraction obtained from the biodegradation of chitin containing organisms.

Claims

1. A process for increasing the chitosan and/or glucosamine in HYTb comprising:

forming a mixture comprising HYTb, a microbial composition and solid chitin, wherein said microbial composition comprises HQE (PTA-10861), and said microbial composition comprises one or more microbes that produce chitin digesting enzymes;

and fermenting said mixture for a time sufficient to enzymatically digest all or part of said chitin to form a fermented mixture wherein the amount of at least one of chitosan and glucosamine in said fermented mixture is greater than in said HYTb.

2. The process of claim 1 wherein said mixture is diluted to form a diluted mixture and said diluted mixture is fermented to digest all or part of said chitin to form a fermented mixture, wherein the absolute amount of at least one of chitin and glucosamine in said fermented mixture is greater than that in said HYTb.

3. The process of claim 1 wherein HYTc is the source of said chitin.

4. The process of claim 3 wherein said HYTc is micronized to form micronized chitin and residual chitin and said chitin comprises said residual chitin.

5. The process of claim 1 further comprising separating solids and optionally the microbes and cells from said fermented mixture.

6. A process comprising:

mixing a marine animal or marine animal by-product with a first microbial composition to form a first mixture, wherein said first microbial composition contains one or more microbes that produce enzymes that digest said marine animal or by-product into solid, aqueous and lipid fractions, wherein said solid fraction comprises chitin and said aqueous phase comprises amino acids, chitosan and glucosamine;

fermenting said first mixture to form a first fermented mixture;

separating said first fermented mixture into a first solid fraction, a first aqueous fraction and a first lipid fraction;

forming a second mixture comprising said first aqueous fraction, chitin and a second microbial composition wherein said second microbial composition comprises HQE (PTA-10861), and wherein said microbial composition comprises one or more microbes that produce chitin digesting enzymes;

fermenting said second mixture to form a fermented second mixture; and

optionally, separating said fermented second mixture into a second aqueous and second solid fraction, wherein said second aqueous fraction has a higher content of at least one of chitosan and glucosamine as compared to said first aqueous fraction.

7. The process of claim 6 wherein said second mixture is diluted to form a diluted second mixture and said diluted second mixture is fermented to digest all or part of said chitin to form a second fermented mixture, wherein the absolute amount of at least one of chitin and glucosamine in said second fermented mixture is greater than that in said first aqueous fraction.

8. The process of claim 6 wherein HYTc is the source of said chitin.

9. The process of claim 8 wherein the HYTc is micronized to form micronized chitin from HYTc and residual chitin from HYTc and the residual chitin from HYTc is the source of said chitin.

10. The process of claim 6 further comprising separating solids and optionally the microbes and cells from said fermented second mixture.

11. The process of claim 6 wherein said first microbial composition comprises HQE.