THE PRODUCTION OF GLUCONIC ACID BY THE PENICILLIUM LUTEUM-PURPUROGENUM GROUP
1928; Elsevier BV; Volume: 77; Issue: 1 Linguagem: Inglês
10.1016/s0021-9258(18)84051-0
ISSN1083-351X
AutoresH. T. Herrick, Orville E. May,
Tópico(s)Biofuel production and bioconversion
ResumoWithin the last 4 years, several investigators (1) have noted the formation of mixtures of gluconic, citric, and oxalic acids in varying quantities, when Aspergillus niger and strains of the so called Penicillium glaucum were grown on sucrose and glucose solutions.They found that the ratio of the quantities of the different acids produced was widely changed by varying the experimental conditions; these influences were so pronounced that the oxidation could be almost completely directed to one of the three acids as the predominant end-product.In a previous paper of this series (l), the fact was announced that a certain strain of the Penicillium luteumpurpurogenum group (Penicdlium purpurogenum var.rubrisclerotium Thorn, No. 2670), when cultured on glucose solutions, formed large quantities of gluconic acid to the exclusion of other acids which usually result from mold fermentations.As it seemed unlikely that the exact conditions for the exclusive formation of gluconic acid by our organism had been accidentally used, it was thought advisable to vary several of the experimental factors so as to bring about the maximum production of acid and at the same time ascertain whether other acids were formed under these changed conditions.To this end experiments were devised whereby the temperature, concentration of glucose, and inorganic nutrient media were varied, and the results in each case were noted.The following methods were used.
Referência(s)