Feedstuff of high abrasion resistance and good stability in water, containing PUFAs

Patent metadata

Field	Value
Publication number	US-11464244-B2
Application number	US-201515516022-A
Country	US
Kind code	B2
Filing date	Sep 22, 2015
Priority date	Oct 2, 2014
Publication date	Oct 11, 2022
Grant date	Oct 11, 2022

Abstract

According to the invention, it was found that, surprisingly, a feedstuff having a very high abrasion resistance and very high water stability can be obtained when a PUFA-containing biomass having a high sulphate content is used for producing the feedstuff.

First claim

The invention claimed is:

1. A PUFA (polyunsaturated fatty acid)-containing feedstuff, comprising 2 to 22% by weight of dry biomass, wherein:
a) said biomass is obtained by the fermentation of Labyrinthulea cells;
b) said biomass comprises 25-60 g/kg of sulphate by weight of dry biomass;
c) the 25-60 g/kg of sulphate in said dry biomass is from sulphate present during the fermentation of said Labyrinthulea cells;
and wherein the PUFA-containing feedstuff is characterized by an abrasion resistance, based on its Pellet Durability Index (PDI), of at least 91% and a water stability of at least 96%.

2. The PUFA-containing feedstuff of claim 1 , wherein the Labyrinthulea cells are in the family Thraustochytriaceae.

3. The PUFA-containing feedstuff of claim 2 , wherein said feedstuff contains biomass in an amount of 9 to 20% by weight.

4. The PUFA-containing feedstuff of claim 2 , wherein the Labyrinthulea cells in the family Thraustochytriaceae are of the species Schizochytrium or Aurantiochytrium.

5. The PUFA-containing feedstuff of claim 1 , and wherein said feedstuff is coated with oil in an amount of 3-18% by weight.

6. The PUFA-containing feedstuff of claim 5 , wherein said feedstuff is coated with 7-13% by weight of a coating that is a vegetable oil.

7. The PUFA-containing feedstuff of claim 1 , wherein the Labyrinthulea biomass is present in an amount of 11-18% by weight.

8. The PUFA-containing feedstuff of claim 1 , wherein the Labyrinthulea biomass is present in an amount of 4 to 20% by weight and said feedstuff is coated with oil in an amount of 5-15% by weight.

9. The PUFA-containing feedstuff of claim 1 , wherein the abrasion resistance is at least 94%.

10. The PUFA-containing feedstuff of claim 9 , wherein the water stability is at least 98%.

11. The PUFA-containing feedstuff of claim 1 , wherein the water stability is at least 98%.

12. The PUFA-containing feedstuff of claim 1 , further comprising one or more of the following:
a) a polyunsaturated fatty acid (PUFA) content of 0.8 to 8% by weight;
b) an omega-3 fatty acid content of 0.8 to 8% by weight; and
c) a DHA content of 0.1 to 4.0% by weight.

13. The PUFA-containing feedstuff of claim 1 , comprising the following properties:
a) a total protein content of 33 to 67% by weight;
b) a total fat content of 5 to 25% by weight;
c) a total starch content of at most 25% by weight; and
wherein the PUFA-containing feedstuff of claim 1 , further comprises one or more of the following:
e) a polyunsaturated fatty acid (PUFA) content of 0.8 to 8% by weight;
f) an omega-3 fatty acid content of 0.8 to 8% by weight; and/or
g) a DHA content of 0.1 to 4.0% by weight.

14. The PUFA-containing feedstuff of claim 1 , wherein said biomass comprises 25-40 g/kg of sulphate by weight of dry biomass.

15. A process for producing the PUFA-containing feedstuff of claim 1 , wherein said process comprises extruding a PUFA-containing biomass having a sulphate content of 25 to 60 g per kilogram of biomass together with other feedstuff components.

16. The process of claim 15 , wherein the extrudate is dried and then loaded with oil.

17. The process of claim 16 , wherein extrusion and drying is followed by coating of the extrudate with oil in an amount of 3 to 17% by weight.

18. The process of claim 15 , wherein the extrusion is carried out at an energy input of 12-28 Wh/kg.

19. The process of claim 15 , wherein the composition used for extrusion comprises:
a) a total protein content of 33 to 67% by weight;
b) a total fat content of 5 to 25% by weight;
c) a total starch content of at most 25% by weight.

20. The process of claim 19 , wherein the composition used for extrusion further comprises one or more of the following:
e) a PUFA content of 0.8 to 8% by weight;
f) an omega-3 fatty acid content of 0.8 to 8% by weight;
g) a DHA content of 0.1 to 4.0% by weight.

21. A method for farming animals comprising feeding said animals the PUFA-containing feedstuff of claim 1 .

Assignees

• Evonik Operations Gmbh

Inventors

• Rabe Christian
• Silva Amelia Claudia
• Eils Stefan
• Priefert Horst

Classifications

• A23K50/80

  for aquatic animals, e.g. fish, crustaceans or molluscs · CPC title

• A23K10/16

  Addition of microorganisms or extracts thereof, e.g. single-cell proteins, to feeding-stuff compositions (A23K10/12 takes precedence) · CPC title

• A23K10/12 Primary

  by fermentation of natural products, e.g. of vegetable material, animal waste material or biomass · CPC title

• A23K20/163

  Sugars; Polysaccharides · CPC title

• A23K40/30

  by encapsulating; by coating · CPC title