Danisco US Inc.

Jaclyn Diana Demartini

Celia Emily Gaby Payen

Jayarama K Shetty

Gopal K Chotani

Bradley R Kelemen

Michael Jay Pepsin

Vivek Sharma

Jacob Andrew Latone

Described are compositions and methods relating to yeast having a genetic mutation that results in decreased amounts of Cdc42 effector proteins, resulting in increased alcohol and lysine production. Such yeast is well-suited for use commercial alcohol production to increase yields and to increase the value of Such yeast is well-suited for use commercial alcohol production to increase yields and to increase the value of amino-acid-containing, fermentation-co-products.

Disruption of CDC42 effectors in yeast for increased alcohol and lysine production

The present invention relates to a dry grind ethanol process in which post-distillation backset is subjected to aerobic fermentation to remove components that are inhibitory to an ethanolagen, such as yeast, allowing the utilization of an increased amount of post-distillation backset during the initial preparation of starch-containing substrates for the dry grind ethanol process. Aerobic fermentation of the post-distillation backset allows substantially higher backset recycle, resulting in fresh water savings and increased sustainability.

Method for increasing backset recycle in dry grind alcohol production

Described are strains and methods relating to genetically-engineered yeast cells that overproduce lysine in a tunable manner by altering feedback inhibition of the lysine synthetic pathway by way of the LYS20 and LYS21 homocitrate synthase polypeptides. The yeast can be used in a conventional bioethanol production facility to produce alcohol along with increased amounts of lysine, resulting in increased quality and commercial value of fermentation products and co-products, such as animal feed ingredients.

Modified yeast and method for increasing lysine content in fermentation co-products

Disclosed are compositions and methods for improving the amino acid content of animal feed byproducts from a dry grind ethanol production facility by reducing the amount of residual reducing sugars that can participate in, e.g., the Maillard reaction. The compositions and methods provided herein for improving the amino acid content of animal feed include enzymes capable of oxidizing the residual sugars.

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PALO ALTO, CA, United States of America

Jaclyn Diana Demartini