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US Patent 4115949 - Production of glycerol from algae

US Patent Issued on September 26, 1978
Estimated Patent Expiration Date: Icon_subject May 25, 1997Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.
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Abstract

A process for the production of glycerol and proteinous substances of nutritive value which comprises cultivating algae of the Dunaliella species in a nutrient medium containing the mineral requirements of growth of the algae, said nutrient medium having a sodium chloride content of at least 1.5 M, the cultivation being effected while an adequate supply of carbon dioxide is provided and continued until a maximum concentration of algae is obtained, and continuing the cultivation of the algae in a nutrient medium having a content of sodium chloride of at least 3 M, cultivating the algae in this second nutrient medium until a high glycerol content is established, harvesting the algae, recovering from same the glycerol, and recovering the residue having a high protein content.

Inventors

Application

No. 05/800521 filed on 05/25/1977

US Classes:

47/1.4, ALGAE CULTURE568/869Of glycerol

Field of Search

47/1.4ALGAE CULTURE

Examiners

Primary: Bagwill, Robert E.

Attorney, Agent or Firm

US Patent References

2732661, 3195271, 3650068

International Classes

C12P 23/00 (20060101)
C12P 7/02 (20060101)
C12P 7/20 (20060101)
C12N 1/12 (20060101)

Foreign Application Priority Data

1976-06-06 IL

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