公开(公告)号：US3923782A

公开(公告)日：1975-12-02

申请号：US36455973

申请日：1973-05-29

Applicant: CORNELL RES FOUNDATION INC

Inventor： FINN ROBERT K ,  TANNAHILL ALEX L ,  LAPTEWICZ JR JOSEPH E

IPC: C08B37/00 ,  C09K8/035 ,  C09K8/90 ,  C12N1/32 ,  C12P19/04 ,  C12D13/04

CPC classification number: C09K8/905 ,  C08B37/00 ,  C09K8/035 ,  C12N1/32 ,  C12P19/04 ,  Y10S435/822 ,  Y10S507/936 ,  Y10T137/0391

Abstract: Disclosed is a new heteropolysaccharide polymer and a method for producing this polymer by a fermentation process comprising culturing a heteropolysaccharide-producing strain of a microorganism of the genus Methylomonas on an aqueous culture medium containing methanol as the sole source of assimilable carbon. Several uses for the heteropolysaccharide are also disclosed such as its use as a drag reducing agent, a thickening agent, an emulsifier, a soil suspending agent and a flocculant or deflocculant.

公开(公告)号：US3878045A

公开(公告)日：1975-04-15

申请号：US36940373

申请日：1973-06-12

Applicant: CORNELL RES FOUNDATION INC

Inventor： TANNAHILL ALEX L ,  FINN ROBERT K

IPC: C12N1/32 ,  C12P19/04 ,  C12D1/00

CPC classification number: C12N1/32 ,  C12P19/04 ,  Y10S435/858

Abstract: Disclosed is an improved process for the preparation of a new heteropolysaccharide by a fermentation process comprising culturing a heteropolysaccharide-producing strain of a microorganism of the genus Methylomonas on an aqueous culture medium containing methanol as the sole source of assimilable carbon. The concentration of the product polysaccharide in the fermentation broth is increased, the fermentation time is shortened, and the properties of the polysaccharide are improved by the controlled addition of methanol to the fermentation process near the end of the logarithmic phase of growth of the bacteria.

Abstract translation: 公开了一种用于通过发酵方法制备新杂多糖的改进方法，包括在含有甲醇作为唯一可同化碳源的含水培养基上培养产生Methylomonas属微生物的杂多糖产生菌株。 产物多糖在发酵液中的浓度增加，发酵时间缩短，通过在细菌生长对数阶段结束附近向发酵过程中控制加入甲醇提高了多糖的性质。