Biocatalytic processes and materials for enhanced carbon utilization

Abstract

The present disclosure describes biocatalytic processes for producing a product, comprising providing an aqueous stream (AS) comprising at least one fermentable substrate and a gaseous stream (GS) comprising at least one of CO/H, H, methane, and/or CO to a fermentation zone, wherein the GS and AS stream are optionally contacted and/or mixed; the fermentation zone comprising at least one organism capable of metabolizing an AS substrate and a GS substrate, wherein the fermentation operates at conditions to mixotrophically metabolize at least one gaseous substrate in the GS and at least one substrate in the AS, producing the product. The present disclosure also describes compositions comprising an AS, a GS, and an organism, wherein the organism or an equivalent or engineered equivalent thereof is a methanotroph or a hydrogen-metabolizing or CO-metabolizing chemolithotrophic organism, and wherein the organism is capable of mixotrophic metabolism of at least one gaseous substrate in the GS and at least one substrate in the AS. The present disclosure also describes a process wherein said fermentation operates at conditions to mixotrophically metabolize at least Hin the gaseous stream and glycerol and lactic acid in the aqueous stream. The present disclosure also describes a system for producing a fermentation or bio-derived product.