Described are compositions and methods relating to modified yeast that over-express polyadenylate-binding protein (PAB1). The yeast produces a deceased amount of acetate compared to parental cells. Such yeast is particularly useful for large-scale ethanol production from starch substrates where acetate in an undesirable end product.

The present disclosure relates to methods of producing organic compounds in a subterranean environment, and systems for the practice thereof. A benefit of the methods disclosed herein can include cost-effectively converting a carbon dioxide feedstock stored in a subterranean environment into one or more organic compounds.

The present disclosure relates to methods of producing organic compounds in a subterranean environment, and systems for the practice thereof. A benefit of the methods disclosed herein can include cost-effectively converting a carbon dioxide feedstock stored in a subterranean environment into one or more organic compounds.

The present invention relates to the preparation of organic molecules by anaerobic fermentation of biomass, in which the fermentation liquor is aerated prior to the organic molecule recovery step.

The present invention relates to the preparation of organic molecules by anaerobic fermentation of biomass, in which the fermentation liquor is aerated prior to the organic molecule recovery step.

A method of upregulating the synthesis of pyruvate and/or a metabolite of pyruvate in a photosynthetic microorganism, a method for the photosynthetic production of a one, two, three or four carbon compounds, and a method for the production of ethanol from a photosynthetic microorganism are disclosed.

A method for biogas production includes feeding a receiving structure with a feed containing biomass that comprises lignocellulose and directing the feed from the receiving structure into an anaerobic secretome bioreactor (ASB) reactor environment which includes a synthetic microbial community consisting of at least one selected from extremophile thermophilic anaerobic microorganisms that are essentially acidogens and acetogens, the synthetic microbial community producing a secretome of exozymes. The ASB treated biomass is further directed to an aerobic digestion (AD) reactor environment, the ASB treated biomass being pasteurized so as to be essentially free of non-thermophilic microorganisms, the ASB treated biomass comprising liquid effluent containing solubilized biomass products and metabolized biomass products, and solid effluent. Contents or heat are recycled through a conduit between the ASB reactor environment and the AD reactor environment.

A method for biogas production includes feeding a receiving structure with a feed containing biomass that comprises lignocellulose and directing the feed from the receiving structure into an anaerobic secretome bioreactor (ASB) reactor environment which includes a synthetic microbial community consisting of at least one selected from extremophile thermophilic anaerobic microorganisms that are essentially acidogens and acetogens, the synthetic microbial community producing a secretome of exozymes. The ASB treated biomass is further directed to an aerobic digestion (AD) reactor environment, the ASB treated biomass being pasteurized so as to be essentially free of non-thermophilic microorganisms, the ASB treated biomass comprising liquid effluent containing solubilized biomass products and metabolized biomass products, and solid effluent. Contents or heat are recycled through a conduit between the ASB reactor environment and the AD reactor environment.

Protein-rich nutrient supplements and animal feed supplements derived from an anaerobic bacterial process are generated through a myriad of cell rupturing and protein fractionation/purification processes. Bacterial fermentation systems and methods of obtaining one or more protein-containing portions from a fermentation process using carbon monoxide-containing gaseous substrates increasing protein product yield from bacterial cells are provided. The invention further provides compositions of protein-rich nutrient supplements with useful applications for intake by a variety of different animals and humans.

The present disclosure provides a process for forming a biogenic carbon-based fuel or a fuel intermediate from biogenic carbon dioxide and hydrogen. The hydrogen is sourced from a process that produces hydrogen and fossil carbon dioxide from a fossil-fuel hydrocarbon and separates the fossil carbon dioxide from the hydrogen. The process may further comprise carrying out or arranging for one or more parties to carry out at least one step that contributes to a reduction in the GHG emissions of the biogenic carbon-based fuel, or a fuel made from the fuel intermediate, of at least 20% relative to a gasoline baseline. In various embodiments this includes (a) introducing the fossil carbon dioxide underground, and/or (b) using a biogenic carbon-based product selected from a chemical and energy product produced from the non-fossil organic material to displace the use or production of a corresponding fossil-based product.