Production of pyruvic acid with Candida glabrata using self-fermenting spent yeast cell dry powder as a seed nitrogen source

Abstract Pyruvic acid is an important organic and a key industrial raw material. It widely used in the chemical, agricultural, food fields. Candida glabrata preferred strain for pyruvic production. The waste yeast cell fermentation with C. are rich protein, amino acid, nucleic vitamins, as potential cost-effective nitrogen source In this study, of to produce using spent dry powder was evaluated. When 30 g/L spray-dried seed source, high titer obtained. production reached 63.4 yield 0.59 g/g 5 L bioreactor. After scale-up 50 bioreactor fermented 65.1 harvested, 0.61 g/g. This study proposes promising approach increasing reducing costs. Graphical