Lactobacillus brevis bacteriocin and preparation method thereof

The invention discloses a Lactobacillus brevis bacteriocin and a preparation method of the Lactobacillus brevis bacteriocin. The preparation method of the Lactobacillus brevis bacteriocin comprises the following steps of: fermenting Lactobacillus brevis with preservation number CGMCC No.1.558, colle...

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Bibliographische Detailangaben
Hauptverfasser: XIE LUOXIANG, LIU PING, XU LE
Format: Patent
Sprache:chi ; eng
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Zusammenfassung:The invention discloses a Lactobacillus brevis bacteriocin and a preparation method of the Lactobacillus brevis bacteriocin. The preparation method of the Lactobacillus brevis bacteriocin comprises the following steps of: fermenting Lactobacillus brevis with preservation number CGMCC No.1.558, collecting the fermentation supernatant and obtaining the Lactobacillus brevis bacteriocin. According to the preparation method, the culture medium and fermentation condition are optimized, thus the yield of the Lactobacillus brevis bacteriocin is relatively high and the performance of the Lactobacillus brevis bacteriocin is good. The Lactobacillus brevis bacteriocin not only inhibits the Gram-positive bacteria, but also effectively inhibits the Gram-negative bacteria with relatively high inhibition activity. The Lactobacillus brevis bacteriocin and the preparation method are very valuable in the technical field of the feedstuff.