Method for producing biomass which has a high exopolysaccharide content
According to the invention, it was found that culturing of cells of the taxon Labyrinthulomycetes in a high content of sulphate makes it possible to obtain a biomass having a high EPS content, which biomass can in addition be advantageously further processed into a feedstuff.
1. A biomass dried comprising: exopolysaccharides (EPSs) of microorganisms of the taxon Labyrinthulomycetes, wherein the biomass has and a sulphate content, based on the dry mass, of 25 to 60 g/kg.
2. The biomass of claim 1 , wherein said biomass has a sulphate content, based on the dry mass, of 25 to 40 g/kg.
3. The biomass of claim 1 , wherein the microorganisms of the taxon Labyrinthulomycetes are of the family Thraustochytriaceae.
4. The biomass of claim 3 , wherein the microorganisms of the taxon Labyrinthulomycetes are of the genus Althomia, Aplanochytrium, Elnia, Japonochytrium, Schizochytrium, Thraustochytrium, Aurantiochytrium, Oblongichytrium or Ulkenia.
5. The biomass of claim 4 , wherein the microorganisms are of the genus Aurantiochytrium.
6. The biomass of claim 5 , wherein the microorganisms are of species Aurantiochytrium limacinum.
7. A feedstuff, comprising the biomass of claim 1 .
8. The feedstuff of claim 7 , wherein said feedstuff 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 at most 25% by weight; and
d) a biomass content of 2 to 22% by weight.
9. The feedstuff of claim 8 , wherein said feedstuff comprises:
e) a polyunsaturated fatty acid (PUFA) content of 2 to 12% by weight.
10. The feedstuff of claim 8 , wherein said feedstuff comprises:
f) an omega-3 fatty acid content of 1 to 6% by weight.
11. The feedstuff of claim 8 , wherein said feedstuff comprises:
g) a DHA content of 0.5 to 3% by weight.
12. The feedstuff of claim 9 , wherein said feedstuff comprises:
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.
13. The feedstuff of claim 7 , wherein said feedstuff comprises:
a) a total protein content of 40 to 50% by weight;
b) a total fat content of 20 to 30% by weight;
c) a total starch content of 5 to 15% by weight;
d) a biomass content of 8 to 18% by weight.
14. The feedstuff of claim 13 , 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;
g) a DHA content of 1.2 to 2.0% by weight.
15. The biomass of claim 1 , comprising a sulphate content, based on the dry mass, of 25 to 30 g/kg.
16. The biomass of claim 15 , wherein the microorganisms of the taxon Labyrinthulomycetes are of the family Thraustochytriaceae.
17. The biomass of claim 15 , wherein the microorganisms are cells of the species Aurantiochytrium limacinum.
18. The feedstuff of claim 8 , wherein said biomass comprises a sulphate content, based on the dry mass, of 25 to 30 g/kg.
19. The feedstuff of claim 18 , wherein said feedstuff comprises: a polyunsaturated fatty acid (PUFA) content of 2 to 12% by weight.
20. The feedstuff of claim 19 , wherein said feedstuff comprises an omega-3 fatty acid content of 1 to 6% by weight.