Microorganism belonging to Yarrowia genus, and oil decomposition agent and oil decomposition/removal method using same

Patent metadata

Field	Value
Publication number	US-10065877-B2
Application number	US-201314372831-A
Country	US
Kind code	B2
Filing date	Jan 16, 2013
Priority date	Jan 19, 2012
Publication date	Sep 4, 2018
Grant date	Sep 4, 2018

Abstract

The present invention addresses the problem of providing a new microorganism that is useful for efficiently decomposing oils and fats, and a use for said microorganism. According to screening results, a new Yarrowia lipolytica having a high capacity to assimilate free fatty acids was successfully obtained. Efficient decomposition of oils and fats is achieved by causing the Yarrowia lipolytica to act under conditions in which fatty acids that are hydrolysis products of oils or fats are present, or under conditions in which oils or fats are decomposed into fatty acids and glycerol.

First claim

The invention claimed is:

1. A method for decomposing and removing oils and fats, comprising contacting Yarrowia lipolytica that assimilates free fatty acids, does not secrete a lipase, and can be grown symbiotically with Burkholderia arboris , with oils and fats to be treated under a condition which a microorganism capable of secreting a lipase is present and triacylglycerol is hydrolyzed into fatty acids and glycerol, wherein the microorganism is Burkholderia arboris and the Yarrowia lipolytica is a naturally occurring strain specified by Accession No. NITE BP-1167.

2. The method according to claim 1 , wherein the Burkholderia arboris is a strain specified by Accession No. NITE BP-00724.

3. The method according to claim 1 , wherein a microorganism that assimilates glycerol is used in combination.

4. The method according to claim 3 , wherein the microorganism that assimilates glycerol is Candida cylindracea.

5. The method according to claim 4 , wherein the Candida cylindracea is a strain specified by Accession No. NITE BP-00714.

6. The method according to claim 1 , wherein the oils and fats to be treated are oils and fats in waste water or a grease trap.

7. A method for treating waste water, comprising decomposing and removing oils and fats in waste water by the method according to claim 1 .

8. A method for clarifying a grease trap, comprising decomposing and removing oils and fats in a grease trap by the method according to claim 1 .

Assignees

• Univ Nagoya Nat Univ Corp
• Nissan Chemical Ind Ltd

Inventors

• Hori Katsutoshi
• FUJIOKA Masatake

Classifications

• C02F3/347

  Use of yeasts or fungi (C02F3/322 takes precedence) · CPC title

• C02F2307/08

  Treatment of wastewater in the sewer, e.g. to reduce grease, odour · CPC title

• C02F3/343 Primary

  for digestion of grease, fat, oil · CPC title

• C02F2103/32

  from the food or foodstuff industry, e.g. brewery waste waters · CPC title

• C02F2103/322

  from vegetable oil production, e.g. olive oil production · CPC title