Pfizer Handbook of Microbial Metabolites 408 



863 Comenic Acid, CgH^Oj, colorless plates, m.p. 276° (dec.)- 



HO ? 



COOH 



Gluconoacetobacter liquefaciens 



A yield of 1.1 g. from 140 g. of glucose has been re- 

 ported. 



Ko Aida, Bull. Agr. Chem. Soc. (Japan) 19 97 (1955). 



864 Rubiginic Acid, C6H4O6, colorless needles, m.p. 230° (dec). 



) 



V 



HO II OH 



COOH 



Gluconoacetobacter liquefaciens 



Ko Alda, Bull. Agr. Chem. Soc. (Japan) 19 97 (1955). 



865 Kojic Acid, C6H6O4, colorless prisms, m.p. 152°. 



HO ? 



CH2OH 



Aspergillus fiavus, A. oryzae, A. tamarii, A. glaucus, 

 Gluconoacetobacter roseum (fructose substrate) 



High yields (45 g. or more per 100 g. of glucose sub- 

 strate) are produced by some aspergillus strains. 



Leland A. Underkofler and Richard J. Hickey, "Industrial 

 Fermentations," Chemical Publishing Co., Inc., New York, 

 1954 Vol. "II, Lewis B. Lockwood, Ketogenic fermentation proc- 

 esses, chap. 1, pp. 19-20. (A review) 



Andrew Bielik, Advances in Carbohydrate Chem. 11 145 

 (1956). (A review) 



866 Isokojic Acid, C6H6O4, colorless plates, m.p. 183°. 



O 



HO CH2OH 



