PURPOSE: To obtain an excellent immunity-activating agent, antitumoric agent or thickneing agent, by using a novel macromolecular polysaccharide substance MPS-83 which is produced from macromolecular polysaccharide substance MPS- 83-producing bacteria belonging to genus Lactobacillus as an effective component.
CONSTITUTION: Macromolecular polysaccharide substance MPS-83 is obtained by culturing macromolecular polysaccharide substance MPS-83-producing bacteria (e.g., Lactobacillus S-10-LR, FERM BP-127, which are bacteria separated from a dairy product and deposited with the Fermentation Research Institute) and then separating and recovering the substance from the liquid and bacterial fractins of the culture. As a culture medium, a lactic acid bacteria-culturing medium containing skim milk, whey or the like is preferred. The culturing is performed satisfactorily under conditions including, for example, 20W45°C, CO2 atmosphere and stationary culture.
OBARA NAOHIRO
TSUCHIYA FUMIYASU
KANEKO SHIYOUHEI
KANBE MICHIO
ODA MUNEHIRO
TAKETOMO TADAO
OOYAMA YOSHIO
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