Process for producing a PUFA-containing feedstuff by extruding a PUFA-containing biomass

Patent metadata

Field	Value
Publication number	US-10619175-B2
Application number	US-201515516044-A
Country	US
Kind code	B2
Filing date	Sep 22, 2015
Priority date	Oct 2, 2014
Publication date	Apr 14, 2020
Grant date	Apr 14, 2020

Abstract

In accordance with the invention, it was found, surprisingly, that a polyunsaturated fatty acids (PUFAs)-comprising biomass with other feedstuff components can be extruded at a low energy input of 12-28 Wh/kg to give an extrudate with a very high oil load capacity.

First claim

The invention claimed is:

1. A feedstuff extrudate comprising a PUFA-comprising biomass, wherein the PUFA-comprising biomass comprises microbial cells of the taxon Labyrinthulomycetes, and has a sulphate content of 25 to 60 g/kg based on dry matter, and wherein the feedstuff extrudate has an oil load capacity of at least 0.35 g of oil per g of feedstuff extrudate.

2. The feedstuff extrudate of claim 1 , wherein said biomass comprises a sulphate content 25 to 50 g/kg based on the dry matter.

3. The feedstuff extrudate of claim 1 , wherein the PUFA-comprising biomass comprises microbial cells of the family Thraustochytriaceae.

4. The feedstuff extrudate of claim 1 , wherein the PUFA-comprising biomass comprises microbial cells of the genera: Thraustochytrium, Schizochytrium, Aurantiochytrium, Oblongichytrium or Ulkenia.

5. The feedstuff extrudate of claim 1 , wherein the PUFA-comprising biomass comprises microbial cells of the species Aurantiochytrium limacinum.

6. The feedstuff extrudate of claim 1 , wherein the biomass has a sulphate content of 25-35 g/kg based on the dry matter.

7. The feedstuff extrudate of claim 1 , comprising:
a) a total protein content of 30 to 60% by weight;
b) a total fat content of 15 to 35% by weight;
c) a total starch content of not more than 25% by weight; and
d) a biomass content of 2 to 22% by weight.

8. The feedstuff extrudate of claim 7 , further comprising one or more of:
e) a polyunsaturated fatty acid (PUFAs) content of 2 to 12% by weight;
f) an omega-3 fatty acid content of 1 to 6% by weight; and
g) a DHA content of 0.5 to 3% by weight.

9. The feedstuff extrudate of claim 1 , comprising:
a) a total protein content of 40 to 50% by weight;
b) a total fat content of 22 to 28% by weight;
c) a total starch content of 7 to 13% by weight;
d) a Thraustochytriaceae biomass content of 10 to 16% by weight;

and further comprising one or more of the following:
e) a polyunsaturated fatty acid (PUFA) content of 5 to 8% by weight;
f) an omega-3 fatty acid content of 2.5 to 4% by weight; and
g) a DHA content of 1.2 to 2.0% by weight.

10. The feedstuff extrudate of claim 4 , wherein the PUFA-comprising biomass has a sulphate content of 25 to 40 g/kg based on the dry matter.

11. The feedstuff extrudate of claim 10 , further comprising:
a) a total protein content of 35 to 55% by weight;
b) a total fat content 18 to 32% by weight; and
c) a total starch content of 5 to 15% by weight.

12. The feedstuff extrudate of claim 11 , further comprising:
d) a Thraustochytriaceae biomass content of 4 to 20% by weight;
e) a polyunsaturated fatty acid (PUFAs) content of 3 to 10% by weight;
f) an omega-3 fatty acid content of 2 to 4.5% by weight; and
g) a DHA content of 0.8 to 2.5% by weight.

13. A method of growing animals by feeding them a feedstuff extrudate comprising a PUFA-comprising biomass, wherein the PUFA-comprising biomass comprises microbial cells of the taxon Labyrinthulomycetes and has a sulphate content of 25 to 60 g/kg based on dry matter, and wherein the feedstuff extrudate has an oil load capacity of at least 0.35 g of oil per g of feedstuff extrudate.

14. The method of growing animals of claim 13 , wherein the PUFA-comprising biomass comprises microbial cells of the family Thraustochytriaceae and has a sulphate content of 25 to 50 g/kg, based on the dry matter and wherein the feedstuff extrudate comprises:
a) a total protein content of 30 to 60% by weight;
b) a total fat content of 15 to 35% by weight;
c) a total starch content of not more than 25% by weight; and
d) a biomass content of 2 to 22% by weight.

15. The method of growing animals of claim 13 , wherein the biomass comprises microbial cells of the species Aurantiochytrium limacinum and wherein the feedstuff extrudate further comprises one or more of the following:
e) a polyunsaturated fatty acid (PUFAs) content of 2 to 12% by weight;
f) an omega-3 fatty acid content of 1 to 6% by weight; and
g) a DHA content of 0.5 to 3% by weight.

16. The method of claim 14 , wherein the PUFA-comprising biomass has a sulphate content of 25 to 40 g/kg based on the dry matter.

17. The method of claim 16 , wherein the feedstuff extrudate further comprises:
a) a total protein content of 35 to 55% by weight;
b) a total fat content 18 to 32% by weight; and
c) a total starch content of 5 to 15% by weight.

18. The method of claim 17 , wherein the feedstuff extrudate further comprises:
d) a Thraustochytriaceae biomass content, of 4 to 20% by weight;
e) a polyunsaturated fatty acid (PUFAs) content of 3 to 10% by weight;
f) an omega-3 fatty acid content of 2 to 4.5% by weight; and
g) a DHA content of 0.8 to 2.5% by weight.

Assignees

• Evonik Degussa Gmbh
• Evonik Operations Gmbh

Inventors

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

Classifications

• A23K20/158

  Fatty acids; Fats; Products containing oils or fats · CPC title

• A23K40/30 Primary

  by encapsulating; by coating · CPC title

• A23D7/0056

  Spread compositions · CPC title

• Y02A40/818

  Alternative feeds for fish, e.g. in aquacultures · CPC title

• C11B5/00

  Preserving by using additives, e.g. anti-oxidants · CPC title