A Bifidobacterium lactis strain, Bifidobacterium lactis freeze-dried powder and a preparing method thereof

A technology of Bifidobacterium lactis and freeze-dried powder is applied in the field of Bifidobacterium lactis strains, Bifidobacterium lactis freeze-dried powder and preparation thereof, and can solve the problem of low number of live bacteria, high cost, and survival rate of storage at room temperature in freeze-dried powder. Low problems, to prevent oxidative damage, prevent interactions, and ensure the number of viable bacteria
CN108220193AActive Publication Date: 2018-06-29金华银河生物科技有限公司
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
金华银河生物科技有限公司
Publication Date
2018-06-29

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Abstract

The invention provides a Bifidobacterium lactis strain (that is Bifidobacterium lactis BL9) with an accession number of CGMCC No.14536. The invention also provides a preparing method of Bifidobacterium lactis freeze-dried powder. The method includes performing embedding and freeze-drying treatment in an anaerobic environment, and before freeze-drying treatment, a plurality of antioxidants are adopted to perform embedding treatment on the Bifidobacterium lactis in steps, thus effectively preventing interactions between oxygen and a cytomembrane system of the Bifidobacterium lactis, preventing behaviors damaging DNA synthesis, and clearing free radicals generated before freeze drying of the strain, and therefore oxidation damage in a drying process is prevented, and the Bifidobacterium lactis is not liable to be deactivated under room-temperature storage conditions. The invention also provides Bifidobacterium lactis freeze-dried powder prepared by the method.
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Description

technical field

[0001] The application relates to the field of biotechnology, in particular to a strain of Bifidobacterium lactis, freeze-dried powder of Bifidobacterium lactis prepared by using the Bifidobacterium lactis and a preparation method thereof. Background technique

[0002] Bifidobacterium lactis is a beneficial bacterium that colonizes the human intestinal tract, and is the dominant flora in the intestinal tract of healthy people. The structural composition of Bifidobacterium lactis in the human intestinal flora is related to the age and sex of the host, as well as the diet structure and lifestyle of the host. The anaerobic bacteria Bifidobacterium lactis in the intestinal tract of breastfed infants accounts for more than 92% of the total intestinal flora. It is generally believed that Bifidobacterium lactis is a strictly anaerobic bacterium, which has physiological functions such as regulating intestinal flora, preventing and treating intestinal-related disease...

Claims

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