Lactic acid processing; methods; arrangements; and, products

US6534679B2 · kind B2 · utility

Assignee

• CARGILL, INCORPORATED · US

Inventors

• Aharon Eyal · Jerusalem, IL
• John N. Starr · Chaska, US
• Rod Fisher · Eden Prairie, US
• Betty Hazan · Jerusalem, IL
• Riki Canari · Kalanswa, IL
• David R. Witzke · Oskaloosa, US
• Patrick R. Gruber · Blaine, US
• Jeffrey John Kolstad · Wayzata, US

Key dates

• Filing date: Aug 10, 2001
• Grant date: Mar 18, 2003
• Expiry date: Aug 10, 2021

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y02P20/582
• WIPO field: Organic fine chemistry
• WIPO sector: Chemistry

Abstract

The techniques for processing lactic acid/lactate salt mixtures are provided. Preferred mixtures for processing are obtained from fermentation broths, preferably from fermentation processes conducted at a pH of 4.8 or lower. The techniques generally concern the provision of separated lactic acid and lactate streams, from the mixtures. Preferred techniques of separation and processing of each of the streams are provided.