Bifidobacterium deep freezing direct vat starter culture and composite cryoprotectant thereof

The invention discloses a bifidobacterium deep freezing starter culture and a cryoprotectant thereof. Bifidobacterium thallus is obtained by high-density culture, bacterial sludge is collected by centrifugation, the thallus is resuspended by utilizing a preferential complex protective agent, and the...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser: JIANG JINGLI, ZHAO LIANG, ZHANG MING, LIU SONGLING, YANG HAIYING, REN FAZHENG, LIU AIPING, TIAN HANYOU
Format: Patent
Sprache:chi ; eng
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Zusammenfassung:The invention discloses a bifidobacterium deep freezing starter culture and a cryoprotectant thereof. Bifidobacterium thallus is obtained by high-density culture, bacterial sludge is collected by centrifugation, the thallus is resuspended by utilizing a preferential complex protective agent, and the deep freezing preservation is carried out at minus 80 DEG C, thereby effectively keeping the bacterial counts and the functional properties of bifidobacterium. The bifidobacterium deep freezing starter culture is taken as an auxiliary starter culture which has significant effect on effectively applying probiotics in fermentation of dairy products.