Approaches to Enhancing the Viability of Lactic Acid Microorganisms
- Authors: Nikolaev Y.A.1, Shanenko E.F.2, El’-Registan G.I.1
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Affiliations:
- Research Center for Biotechnology, Russian Academy of Sciences
- Moscow State University of Food Production
- Issue: Vol 88, No 5 (2019)
- Pages: 580-584
- Section: Experimental Articles
- URL: https://bakhtiniada.ru/0026-2617/article/view/164110
- DOI: https://doi.org/10.1134/S0026261719050114
- ID: 164110
Cite item
Abstract
Abstract—Approaches to stabilizing the cells of lactic acid organisms (LAO) investigated in the present work resulted in maintaining the viable cell titer at 107–108 cells/mL, the value recommended for the LAO titer in foodstuffs, for 12 months. Natural LAO associations selected for long-term preservation of LAO cell viability exhibited high efficiency. Lactic acid bacteria Lactobacillus plantarum and yeasts Candida parapsilosis were isolated from the association isolated from marketed curdled milk and selected for 6 months. The death rate of these LAO in binary culture (50% of each component) was several times lower than in monocultures. Adding other approaches for cell stabilization in a binary LAO culture (anoxic conditions and stabilizing antioxidant and biopolymer supplements) resulted in a 5- to 6-fold increase in the number of viable cells after 12-month storage. The algorithm for combined application of several approaches to prolongation of cell viability in the cultures of lactic acid microorganisms during long-term storage (up to 12 months) was not reported previously. It may be recommended for LAO cell stabilization both in fermented milk products and in leaven cultures. This is the first report of C. parapsilosis as the yeast component of a stable association with lactic acid bacteria.
About the authors
Yu. A. Nikolaev
Research Center for Biotechnology, Russian Academy of Sciences
Author for correspondence.
Email: NikolaevYA@mail.ru
Russian Federation, Moscow, 119071
E. F. Shanenko
Moscow State University of Food Production
Email: NikolaevYA@mail.ru
Russian Federation, Moscow, 125080
G. I. El’-Registan
Research Center for Biotechnology, Russian Academy of Sciences
Email: NikolaevYA@mail.ru
Russian Federation, Moscow, 119071
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