Alonso S, Rendueles M, Díaz M. Efficient lactobionic acid production from whey by Pseudomonas taetrolens under pH-shift conditions.
BIORESOURCE TECHNOLOGY 2011;
102:9730-9736. [PMID:
21862326 DOI:
10.1016/j.biortech.2011.07.089]
[Citation(s) in RCA: 49] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/07/2011] [Revised: 07/20/2011] [Accepted: 07/22/2011] [Indexed: 05/31/2023]
Abstract
Lactobionic acid finds applications in the fields of pharmaceuticals, cosmetics and medicine. The production of lactobionic acid from whey by Pseudomonas taetrolens was studied in shake-flasks and in a bioreactor. Shake-flask experiments showed that lactobionic acid was a non-growth associated product. A two-stage pH-shift bioconversion strategy with a pH-uncontrolled above 6.5 during the growth phase and maintained at 6.5 during cumulative production was adopted in bioreactor batch cultures. An inoculation level of 30% promoted high cell culture densities that triggered lactobionic acid production at a rate of 1.12 g/Lh. This methodology displayed efficient bioconversion with cheese whey as an inexpensive substrate for lactobionic acid production.
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