Mixotrophic fermentation method performed to make one or more bioproducts such as alcohols, organic acids of less than 7 carbons, acetone, 2,3-butanediol and mixtures thereof with a microorganism. The mixotrophic fermentation method includes providing an isolated organism and providing a first feedstock and a second feedstock for use in a fermentation medium. The first feedstock includes a carbon source that is metabolized by the native form of the organism at a rate of less than 0.01 g/hr/g cell mass, and the second feedstock includes CO, CO.sub.2, carbonate, bicarbonate, H.sub.2, glycerol, methanol, formate, urea or mixtures thereof. The mixotrophic fermentation method also includes culturing the organism in the fermentation medium, whereby both feedstocks are metabolized and a fermentation broth is formed, the broth having at least one bioproduct. Optionally, the bioproduct may be separated from the broth.

Provided herein are methods of organic waste stream conversion including fermenting an organic waste stream with an inoculum using arrested methanogenesis to generate an organic product. The inoculum includes an anaerobic consortium isolated from cheese, yogurt, saline soil, kefir, and/or probiotics and the anaerobic consortium is pretreated to transform the anaerobic consortium into an acidogenic consortium.

Provided herein are methods of organic waste stream conversion including fermenting an organic waste stream with an inoculum using arrested methanogenesis to generate an organic product. The inoculum includes an anaerobic consortium isolated from cheese, yogurt, saline soil, kefir, and/or probiotics and the anaerobic consortium is pretreated to transform the anaerobic consortium into an acidogenic consortium.

The present invention relates to a method for obtaining a compound, after removing at least a portion of insoluble substances or macromolecules from a fermentation broth, by performing one or more of the following steps (a) to (c), and recovering a desired compound: (a) increasing the concentration of a desired compound in the fermentation broth; (b) reducing the concentration of a residual carbon source or alcohol in the fermentation broth; and (c) reducing the concentration of ionic components in the fermentation broth.

The present invention relates to a method for obtaining a compound, after removing at least a portion of insoluble substances or macromolecules from a fermentation broth, by performing one or more of the following steps (a) to (c), and recovering a desired compound: (a) increasing the concentration of a desired compound in the fermentation broth; (b) reducing the concentration of a residual carbon source or alcohol in the fermentation broth; and (c) reducing the concentration of ionic components in the fermentation broth.

The present invention provides a method for producing acrylic acid comprising thermally decomposing a poly(3-hydroxypropionate) in the presence of a predetermined transition metal oxide to produce acrylic acid.

A process for combined renewable 1-decene and renewable carboxylic diacid production from a fatty acid ester containing feedstock, wherein the feedstock is first subjected to metathesis reaction conditions, recovery of 1-decene and then to microbial oxidation to yield diacids in a fermentation broth. Diacids of unusual carbon chains lengths are thereby obtainable.

Methods for obtaining a carboxylic acid product from a lactose-containing feedstock include contacting the lactose-containing feedstock and a first mixture of microorganisms in a first bioreactor under anaerobic conditions at a temperature of about 45 C. to about 55 C. and a pH of from about 4 to about 6 for a period of time such that lactic acid is formed; contacting the lactic acid with a second mixture of microorganisms in a second bioreactor under anaerobic conditions at a temperature of about 25 C. to about 35 C. and a pH of from about 4 to about 6 for a period of time such that the lactic acid is converted to one or more C.sub.3-C.sub.12 carboxylic acid products; and isolating the one or more C.sub.3-C.sub.12 carboxylic acid products. The lactose-containing feedstock has a pH greater than 4.5.

Methods for obtaining a carboxylic acid product from a lactose-containing feedstock include contacting the lactose-containing feedstock and a first mixture of microorganisms in a first bioreactor under anaerobic conditions at a temperature of about 45 C. to about 55 C. and a pH of from about 4 to about 6 for a period of time such that lactic acid is formed; contacting the lactic acid with a second mixture of microorganisms in a second bioreactor under anaerobic conditions at a temperature of about 25 C. to about 35 C. and a pH of from about 4 to about 6 for a period of time such that the lactic acid is converted to one or more C.sub.3-C.sub.12 carboxylic acid products; and isolating the one or more C.sub.3-C.sub.12 carboxylic acid products. The lactose-containing feedstock has a pH greater than 4.5.

A foodstuff can include a free acid ?-hydroxybutyrate, and a base. The ?-hydroxybutyrate, and base, are present at a less than 1:1 molar equivalence. Ketone Ester may also be incorporated as a component of the foodstuff.