Iordan E P, Ikonnikov N P, Kovrizhnykh V A, Vorob'eva L I
Prikl Biokhim Mikrobiol. 1979 Jul-Aug;15(4):515-21.
The capacity of immobilized cells of propionic bacteria to synthesize organic acids was examined. Propionibacterium shermanii cells incorporated into polyacrylamide gel were capable to synthesize propionic, acetic and pyruvic acids in the flow system. As a carbon source glucose, lactate-Na or whey lactose was used. The greatest amount of the acids was synthesized with the use of lactate-Na. The life-time of the biocatalyst (immobilized cells) can be increased by its reactivation with a nutrient medium required for optimal cell proliferation.
对丙酸菌固定化细胞合成有机酸的能力进行了研究。包埋在聚丙烯酰胺凝胶中的谢氏丙酸杆菌细胞能够在流动体系中合成丙酸、乙酸和丙酮酸。使用葡萄糖、乳酸钠或乳清乳糖作为碳源。使用乳酸钠时合成的酸量最多。通过用细胞最佳增殖所需的营养培养基对生物催化剂（固定化细胞）进行再活化，可以延长其使用寿命。
