The present invention is directed to a system and method for producing a vitamin B12 enriched Duckweed Bacterial Culture (DBC) composition. The present invention further discloses a composition comprising a vitamin B12 enriched DBC, wherein said composition comprises at least one Lemnoideae species and at least one vitamin B12 producing bacteria species, further wherein said vitamin B12 content in said composition is in the range of between about 0.01 and about 100 g per 100 g of said DBC.

The present invention is directed to a system and method for producing a vitamin B12 enriched Duckweed Bacterial Culture (DBC) composition. The present invention further discloses a composition comprising a vitamin B12 enriched DBC, wherein said composition comprises at least one Lemnoideae species and at least one vitamin B12 producing bacteria species, further wherein said vitamin B12 content in said composition is in the range of between about 0.01 and about 100 g per 100 g of said DBC.

The present invention relates to genetically modified bacteria and methods of optimizing genetically modified bacteria for the production of a metabolite.

The present invention relates to genetically modified bacteria and methods of optimizing genetically modified bacteria for the production of a metabolite.

The present invention relates to a method for producing a vitamin- and protein-rich product, to a food product containing the vitamin- and protein-rich product, and to a nutrient medium appropriate for said method on the basis of agricultural tributaries or food tributaries.

The present invention relates to a method for producing a vitamin- and protein-rich product, to a food product containing the vitamin- and protein-rich product, and to a nutrient medium appropriate for said method on the basis of agricultural tributaries or food tributaries.

The present invention relates to genetically modified bacteria and methods of optimizing genetically modified bacteria for the production of a metabolite.

The present invention is directed to a system and method for producing vitamin B12 enriched Duckweed Bacterial Culture (DBC) composition. The aforementioned method comprises steps of inoculating at least one Lemnoideae species and at least one vitamin B12 producing bacteria species in a volume of growth media; incubating said at least one Lemnoideae species and said at least one vitamin B12 producing bacteria species under predetermined conditions to provide a Duckweed-Bacterial Culture (DBC); determining time intervals within said plots characterized by DBC with highest vitamin B12 content; and harvesting said DBC at said predetermined time intervals, thereby providing vitamin B12 enriched DBC composition. The present invention further discloses a composition comprising a vitamin B12 enriched Duckweed-Bacterial Culture (DBC), wherein said composition comprises at least one Lemnoideae species and at least one B12 producing bacteria species, further wherein said vitamin B12 content in said composition is in the range of between about 0.01 and about 100 g per 100 g of said DBC.

The present invention is directed to a system and method for producing vitamin B12 enriched Duckweed Bacterial Culture (DBC) composition. The aforementioned method comprises steps of inoculating at least one Lemnoideae species and at least one vitamin B12 producing bacteria species in a volume of growth media; incubating said at least one Lemnoideae species and said at least one vitamin B12 producing bacteria species under predetermined conditions to provide a Duckweed-Bacterial Culture (DBC); determining time intervals within said plots characterized by DBC with highest vitamin B12 content; and harvesting said DBC at said predetermined time intervals, thereby providing vitamin B12 enriched DBC composition. The present invention further discloses a composition comprising a vitamin B12 enriched Duckweed-Bacterial Culture (DBC), wherein said composition comprises at least one Lemnoideae species and at least one B12 producing bacteria species, further wherein said vitamin B12 content in said composition is in the range of between about 0.01 and about 100 g per 100 g of said DBC.

The invention provides a fungal cell, such as a yeast cell, capable of growing in co-cultivation with Propionibacterium. Also provided are methods of producing such cells and fermentation processes using the fungal cell of the invention and Propionibacterium in co-cultivation. Such co-cultivation significantly reduces the chemical oxygen demand load of the waste fermentation broth.