Influence of sub-lethal stresses on the survival of lactic acid bacteria after spray-drying in orange juice

Food Microbiology
J BarbosaP Teixeira

Abstract

The demand for new functional non-dairy based products makes the production of a probiotic orange juice powder an encouraging challenge. However, during drying process and storage, loss of viability of the dried probiotic cultures can occur, since the cells are exposed to various stresses. The influence of sub-lethal conditions of temperature, acidic pH and hydrogen peroxide on the viability of Pediococcus acidilactici HA-6111-2 and Lactobacillus plantarum 299v during spray drying in orange juice and subsequent storage under different conditions was investigated. At the end of storage, the survival of both microorganisms through simulated gastro-intestinal tract (GIT) conditions was also determined. The viability of cells previously exposed to each stress was not affected by the drying process. However, during 180 days of storage at room temperature, unlike P. acidilactici HA-6111-2, survival of L. plantarum 299v was enhanced by prior exposure to sub-lethal conditions. Previous exposure to sub-lethal stresses of each microorganism did not improve their viability after passage through simulated GIT. Nevertheless, as cellular inactivation during 180 days of storage was low, both microorganisms were present in numbers of ca. 10(7)...Continue Reading

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Mar 9, 2010·Journal of Bacteriology·Jeff R BroadbentJames L Steele

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Citations

Mar 29, 2016·Journal of Clinical Virology : the Official Publication of the Pan American Society for Clinical Virology·Tatiane da Silva PolóAxel Mauroy
Dec 14, 2019·World Journal of Microbiology & Biotechnology·Mauricio Cruz BarreraAnant V Patel
Jan 21, 2020·Journal of Applied Microbiology·X WangW Wang
Sep 5, 2020·The Journal of Dairy Research·Débora C CnossenAntônio Fernandes de Carvalho
Jun 20, 2021·Comprehensive Reviews in Food Science and Food Safety·Maria Tereza Cratiú MoreiraAntônio Fernandes de Carvalho
Aug 10, 2021·Beneficial Microbes·E Arvidsson NordströmN Larsson

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