Ferulic Acid Esterase Producing Lactobacillus johnsonii from Goat Feces as Corn Silage Inoculants

Ferulic acid esterase (FAE+)-producing lactobacilli are being studied as silage inoculants due to their potential of increasing forage fiber digestibility. In this work, three FAE+ strains were isolated from caprine feces and characterized according to their potential probiotic characteristics and a...

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Published in:Microorganisms (Basel) 2022-08, Vol.10 (9), p.1732
Main Authors: Andrada, Estefania, Mechoud, Mónica Adriana, Abeijón-Mukdsi, María Claudia, Chagra Dib, Elsa Patricia, Cerviño, Santiago, Perez Chaia, Adriana, Medina, Roxana Beatriz
Format: Article
Language:English
Subjects:
Acids
Animal production
Corn
Corn silage
Degradability
Digestibility
Dry matter
Enzymes
Esterase
Feces
Fermentation
Ferulic acid
Ferulic acid esterase
Genes
Glycerol
Grain silos
lactic acid bacteria
Lactobacilli
Lactobacillus johnsonii
Metabolism
Phylogenetics
Probiotics
Silage
silage inoculants
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Summary:Ferulic acid esterase (FAE+)-producing lactobacilli are being studied as silage inoculants due to their potential of increasing forage fiber digestibility. In this work, three FAE+ strains were isolated from caprine feces and characterized according to their potential probiotic characteristics and as silage inoculants. CRL1446, a human probiotic isolated from goat cheese, was also included in the experiments as a potential silage inoculant. FAE activity quantification, probiotic characterization, and growth in maize aqueous extract indicated that ETC187 might have a better inoculant and probiotic aptitude. Nevertheless, results in whole-corn mini silos indicated that, although acid detergent fiber (ADF) was significantly reduced by this strain (3% compared with the uninoculated (UN) group), ETC150 and CRL1446 not only induced similar ADF reduction but also reduced dry matter (DM) loss (by 7.3% and 6.5%, respectively) compared with the UN group. Additionally, CRL1446 increased in vitro DM degradability by 10%. All treatments reduced gas losses when compared with the UN group. The potential probiotic features of these strains, as well as their beneficial impact on corn fermentation shown in this study, encourage further studies as enhancers in animal production.
ISSN:2076-2607
2076-2607
DOI:10.3390/microorganisms10091732