| abstract |
A substance TH69E having the following characteristics: (a) elementary analysis: C: 24.25%, H: 4.46% and N: 6.55%; (b) molecular weight: about 60,000+/-15,000 (Biogel P-Series Column); (c) color: white amorphous powder; (d) decomposition point: 180 DEG C. (as determined by a capillary method with use of Silicone Oil WF-30-the color changes to brown); (e) ultraviolet absorption spectrum: as shown in FIG. 1 of the drawings; (f) infrared absorption spectrum: as shown in FIG. 2 of the drawings; (g) pH: 6.7 to 7.1 in an aqueous solution; (h) solubility: soluble in water, and insoluble in ethanol, acetone, n-hexane, n-butanol and phenol; and (i) color reactions: phenol-sulfuric acid reaction, anthrone reaction, Molisch reaction, orcinol-hydrochloric acid reaction, Ninhydrin reaction being positive, and Elson-Morgan's reaction being negative. The substance TH69E exhibits immunopotentiating activities such as a collagen decomposition enhancing effect, an infection preventive effect and an interferon inducing effect. |