Bifidobacterium longum belongs to Lactobacillus, Gram-positive bacteria, no plasmid, no spore, no flagella, no movement, strict anaerobic bacteria, pg-blc107 is the enterprise strain number

Product No.: pg-blc107

Product classification functional probiotic powder

I. Basic Information

Bifidobacterium longum belongs to Lactobacillus, Gram-positive bacteria, no plasmid, no spores, no flagella, no movement, strict anaerobic bacteria.

II. Product specifications

Active lactic acid bacteria content ≥ 10 billion CFU / g, powder, aluminum foil bag, 1kg / bag

III. size and colony morphology

1. Under the large and small microscope, it is generally 0.9-1.2 um long and 0.4-0.6 um wide, usually in irregular forms such as Y-shaped, V-shaped or curved, as shown in the figure.

2. Colony morphology: the colony is round, convex and smooth, the edge is neat and opaque, and the colony is white or milky white.

4： Suitable for growth environment

1 the optimum growth temperature of Bifidobacterium longum is 36-38 ℃, the growth temperature range is 20-45 ℃, the pH value range is 6.5-7.0, and it generally does not grow below pH value 4.5-5.0 or above pH value 8.0-8.5.

2. This strain is a strict anaerobic bacterium without contact enzyme activity. Its tolerance to oxygen varies with the passage times. When there is oxygen, a small amount of contact enzyme is activated to remove a small amount of hydrogen peroxide, and the presence of hydrogen peroxide will destroy the enzymes produced by carbohydrate metabolism, resulting in difficult growth of the strain.

5： Growth characteristics

1. Culture characteristics: it can be cultured in the laboratory with MRS medium.

2 biochemical characteristics: Bifidobacterium longum will not produce carbon dioxide, propionic acid and butyric acid in the process of carbohydrate metabolism, but also produce a small amount of formic acid and succinic acid with acetic acid and lactic acid as the main metabolites; It can decompose the indigestible fiber or glycan in the human intestine and produce a large amount of acid to inhibit harmful bacteria.

6： Product information:

[executive standard] Q / pgjk0001s

[food production license No.] sc10637082900938

[shelf life] the shelf life is 24 months

[storage and transportation] the product is stored at - 18 ℃ or lower, and needs to be sealed and protected from light. The shelf life is 24 months.

[packaging] the products are packaged in high barrier composite aluminum foil bags, with packaging specifications of 1kg / package, 5kg / package, or according to customer needs.