Screening of natural lactic acid bacteria with potential effect on silage fermentation, aerobic stability and aflatoxin B1 in hot and humid area.
aerobic stability
aflatoxin B1
corn silage
hot and humid
lactic acid bacteria
Journal
Journal of applied microbiology
ISSN: 1365-2672
Titre abrégé: J Appl Microbiol
Pays: England
ID NLM: 9706280
Informations de publication
Date de publication:
May 2020
May 2020
Historique:
received:
10
09
2019
revised:
21
12
2019
accepted:
23
12
2019
pubmed:
4
1
2020
medline:
1
7
2020
entrez:
4
1
2020
Statut:
ppublish
Résumé
To effectively make high-quality silage in hot and humid area. The natural lactic acid bacteria (LAB) strains CZ149, XH358, XH753 and XH761 isolated from corn and Napier grass were screened by the potential of low pH growth and high lactic acid production, and their effect on silage quality, aerobic stability and aflatoxin B1 production of whole-crop corn was also studied in Sichuan, China. Four selected strains were Gram-positive and catalase-negative, rod-shaped strains that are able to grow at pH 3·5 and at 45°C. Strains CZ149, XH358, XH753 and XH761 were identified as Lactobacillus plantarum, L. salivarius, L. rhamnosus and L. paracasei, respectively. After 60 days of fermentation, all LAB strains showed no significant relationship with the quality of corn silage, whereas the lowest aflatoxin B1 and lactic-to-acetic ratio were detected in strain XH753-treated silage. Strain CZ149-treated silage showed worse aerobic stability and higher aflatoxin B1 concentration than control, whereas strain XH753-treated silage had better aerobic stability and lowest aflatoxin B1 concentration after aerobic exposure in hot and humid condition for 5 days. The three L. plantarum strains used in this study are not suitable as inoculants for local whole-crop corn silage, whereas L. rhamnosus 753 could prolong the aerobic stability and inhibit the accumulation of aflatoxin B1 at hot and humid condition. This study provides new information of LAB inoculants for corn silage in hot and humid areas. Especially, a screened strain of Lactobacillus rhamnosus 753 can be used as a candidate strains to make high-quality silage in tropical and subtropical areas.
Substances chimiques
Lactic Acid
33X04XA5AT
Aflatoxin B1
9N2N2Y55MH
Banques de données
GENBANK
['MH337263', 'MH333261', 'MH333262', 'MH333263']
Types de publication
Journal Article
Langues
eng
Sous-ensembles de citation
IM
Pagination
1301-1311Subventions
Organisme : Modern Agro-industry Technology Research System of China
ID : CARS-34
Organisme : Education Ministry Chunhui projects
ID : 20191383
Informations de copyright
© 2020 The Society for Applied Microbiology.
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