C - Chemistry – Metallurgy – 12 – P
Patent
C - Chemistry, Metallurgy
12
P
362/1, 195/140,
C12P 1/00 (2006.01) A01G 33/00 (2006.01) C02F 1/52 (2006.01) C02F 3/32 (2006.01) C12M 1/36 (2006.01)
Patent
CA 1040122
PRODUCTION OF ALGAL BIO-POLYMERS ABSTRACT OF THE DISCLOSURE Cultivation of algae to produce long chain polymers having flocculating properties is disclosed. Algae are cul- tivated in an aqueous nutrient medium until optimum culture densities are achieved and thereafter under conditions in which they become deficient in nitrogen thereby causing the cells to shift from a growth phase in which protein production predominates to a growth phase in which extracellular polymer production pre- dominates. An adequate supply of other nutrients as well as CO2 and light are maintained in the culture medium during the latter phase to insure that a growth limitation is caused solely by a deficiency in nitrogen. The algae produce high molecular weight polymers exhibiting strong flocculating activity.
215204
Fogel Samuel
Foster Patricia L.
Schenck Paula
Walker William W. (jr.)
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