US Patent 8486468 Porphyrin containing lactic acid bacterial cells and use thereof

Culturally modified lactic acid bacterial cells containing a porphyrin compound and their use in a novel method of reducing the oxygen content in a food and feed product or starting material is provided and means of improving the shelf life and/or quality of such products by using the culturally modified bacterial cells. Such culturally modified cells are useful in the manufacturing of a food and a feed product and for the manufacturing of metabolites produced by modified cells.