CN105567601A - Lactobacillus plantarum and application thereof - Google Patents

Lactobacillus plantarum and application thereof Download PDF

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Publication number
CN105567601A
CN105567601A CN201610066292.8A CN201610066292A CN105567601A CN 105567601 A CN105567601 A CN 105567601A CN 201610066292 A CN201610066292 A CN 201610066292A CN 105567601 A CN105567601 A CN 105567601A
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CN
China
Prior art keywords
plant lactobacillus
cholesterol
lactobacillus plantarum
application
bacterium
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Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN201610066292.8A
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Chinese (zh)
Inventor
金雪霞
路庆鹏
陈家伟
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JIANGSU LVKE BIOTECHNOLOGY CO Ltd
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JIANGSU LVKE BIOTECHNOLOGY CO Ltd
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Priority to CN201610066292.8A priority Critical patent/CN105567601A/en
Publication of CN105567601A publication Critical patent/CN105567601A/en
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    • CCHEMISTRY; METALLURGY
    • C12BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
    • C12NMICROORGANISMS OR ENZYMES; COMPOSITIONS THEREOF; PROPAGATING, PRESERVING, OR MAINTAINING MICROORGANISMS; MUTATION OR GENETIC ENGINEERING; CULTURE MEDIA
    • C12N1/00Microorganisms, e.g. protozoa; Compositions thereof; Processes of propagating, maintaining or preserving microorganisms or compositions thereof; Processes of preparing or isolating a composition containing a microorganism; Culture media therefor
    • C12N1/20Bacteria; Culture media therefor
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61KPREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K35/00Medicinal preparations containing materials or reaction products thereof with undetermined constitution
    • A61K35/66Microorganisms or materials therefrom
    • A61K35/74Bacteria
    • A61K35/741Probiotics
    • A61K35/744Lactic acid bacteria, e.g. enterococci, pediococci, lactococci, streptococci or leuconostocs
    • A61K35/747Lactobacilli, e.g. L. acidophilus or L. brevis
    • AHUMAN NECESSITIES
    • A23FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
    • A23VINDEXING SCHEME RELATING TO FOODS, FOODSTUFFS OR NON-ALCOHOLIC BEVERAGES AND LACTIC OR PROPIONIC ACID BACTERIA USED IN FOODSTUFFS OR FOOD PREPARATION
    • A23V2400/00Lactic or propionic acid bacteria
    • A23V2400/11Lactobacillus
    • A23V2400/169Plantarum
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61KPREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K35/00Medicinal preparations containing materials or reaction products thereof with undetermined constitution
    • A61K2035/11Medicinal preparations comprising living procariotic cells
    • A61K2035/115Probiotics

Abstract

The invention discloses lactobacillus plantarum. The preservation number of the lactobacillus plantarum is CGMCC NO. 11875. The invention further provides application of the lactobacillus plantarum to degradation of cholesterol and preparation of drugs or health-care products for degrading cholesterol.

Description

A kind of plant lactobacillus and application thereof
Technical field
The invention belongs to microorganism field, is the effect about a kind of newfound plant lactobacillus and cholesterol degradation function thereof.
Background technology
The life of plant lactobacillus and the mankind, animal is in close relations, it is a kind of milk-acid bacteria be common in cream, meat and many vegetable fermentation goods, silage, by stomach and be colonizated in enteron aisle play beneficial effect, such as maintain the balance of intestinal flora, promote absorption of nutrient ingredients, alleviate the several functions such as the formation of lactose intolerance and inhibition tumor cell, the more Application Areas of research report comprises food, feed, health care, makeup, beauty treatment, aquaculture, industrial and agricultural production, biological preservative, probiotics preparation etc. at present.
The newfound plant lactobacillus of the present invention is the Bacterium lacticum extracted in the animal and plant body of aquaculture water, be a kind of plant lactobacillus through qualification, optimum growth temperature is 30 ~ 35, and bacterial classification is straight or curved shaft-like or become chain, optimal pH about 6.5, belongs to homofermentative lactic bacteria.This bacterium and the difference of other milk-acid bacterias are that the viable count of this bacterium is higher, and product acid that can be a large amount of, makes the pH value in water stablize and do not raise; Because this bacterium is anaerobic bacterium (facultative aerobic), the distinctive lactobacillin of energy output in reproductive process, current plant lactobacillus is mainly used at present and changes all types of allergic symptom, improve physique, the medical aspect such as toxin expelling, when studying newfound plant lactobacillus effect, find that it has good effect to cholesterol degradation.
Summary of the invention
Present invention finds a kind of new plant lactobacillus, and find its new purposes.
Particularly, the present invention's extraction and isolation in the animal and plant body of aquaculture water obtains a kind of Bacterium lacticum, through being accredited as a kind of new plant lactobacillus, it is stored in China Committee for Culture Collection of Microorganisms's common micro-organisms center in December, 2015, preservation address is No. 3, Yard 1, BeiChen xi Road, Chaoyang District, Beijing City Institute of Microorganism, Academia Sinica, and preserving number is CGMCCNO:11875.
Shown in plant lactobacillus 16SrDNA sequence SEQNo1 of the present invention.
What cultivation Bacterium lacticum was used is MRS substratum, and culture medium prescription is: glucose 30g, peptone 10g, yeast powder 7.5g, anhydrous sodium acetate 5g, K2HPO42g, magnesium sulfate 0.8g, manganous sulfate 0.2g, dibasic ammonium citrate 2g, PH7.0-7.5, and culture temperature is 37 DEG C.
The form of bacterial classification
Plant lactobacillus cultivates 48h on substratum, generation bacterium colony figure as shown in Figure 1, colony edge is neat, smooth surface, in milk yellow; By single colonies sampling under an electron microscope (magnification is 1800 times) observe, as shown in Figure 2, cellular form is shaft-like to observations, and gramstaining is accredited as Gram-positive, without gemma and flagellum.
The present invention has found this plant lactobacillus further and it is to the Degradation of cholesterol.
Further, the present invention proposes above-mentioned plant lactobacillus for the preparation of the application on the medicine of cholesterol degradation or healthcare products.
Accompanying drawing explanation
Fig. 1 is plant lactobacillus bacterium colony figure;
Fig. 2 is plant lactobacillus microscopy figure.
Embodiment
Below describe newfound plant lactobacillus in detail by specific experiment and it is to the Degradation of cholesterol.
The present invention's extraction and isolation in the animal and plant body of aquaculture water obtains a kind of Bacterium lacticum, through being accredited as a kind of new plant lactobacillus, it is stored in China Committee for Culture Collection of Microorganisms's common micro-organisms center in December, 2015, preservation address is No. 3, Yard 1, BeiChen xi Road, Chaoyang District, Beijing City Institute of Microorganism, Academia Sinica, and preserving number is CGMCCNO:11875.
Plant lactobacillus 16SrDNA sequence of the present invention is as shown in sequence table.Plant lactobacillus 16SrDNA sequence of the present invention is as shown in sequence table.By carrying out pcr amplification to the 16SrDNA of this bacterial strain, reclaim amplified production order-checking, the sequence logged in sequence and GenBank database carries out tetraploid rice, and 16SrDNA sequence and the plant lactobacillus homology of this bacterial strain reach 99%.
What cultivation Bacterium lacticum was used is MRS substratum, and culture medium prescription is: glucose 30g, peptone 10g, yeast powder 7.5g, anhydrous sodium acetate 5g, K2HPO42g, magnesium sulfate 0.8g, manganous sulfate 0.2g, dibasic ammonium citrate 2g, PH7.0-7.5, and culture temperature is 37 DEG C.
The form of bacterial classification
Plant lactobacillus cultivates 48h on substratum, generation bacterium colony figure as shown in Figure 1, colony edge is neat, smooth surface, in milk yellow; By single colonies sampling under an electron microscope (magnification is 1800 times) observe, as shown in Figure 2, cellular form is shaft-like to observations, and gramstaining is accredited as Gram-positive, without gemma and flagellum.
The present invention has found the effect of plant lactobacillus cholesterol degradation further, and is studied the effect of its cholesterol degradation.
First preparation is containing cholesterol MRS liquid nutrient medium: be first the cholesterol solution of 10gL-1 with dehydrated alcohol compound concentration, with aperture be the filtering with microporous membrane of 0.45 μm degerming after, join in the sterilizing MRS containing 0.30% Glycocholate sodium, make cholesterol ultimate density be 100mgL-1.
The preparation of fermented liquid: connect biography 3 generation in MRS, the centrifugal 10min of the 3rd culture thing 5000rmin-1, abandons supernatant liquor, washes bacterium 3 times with sterile saline is centrifugal, adjusts bacteria suspension concentration to be 3 × 109CFUmL-1.Inoculum size by 2% is inoculated in the MRS liquid nutrient medium containing cholesterol, 37 DEG C of Anaerobic culturel 24h.Retain simultaneously do not connect bacterium containing cholesterol MRS substratum, 5 DEG C of preservations, as blank.
The preparation of o-phthalaldehyde(OPA) working fluid: 50mg o-phthalaldehyde(OPA) is dissolved in 100mL Glacial acetic acid, is stirred to and dissolves completely, makes the working fluid of 0.5gL-1.This solution must use preparation on the same day.
Determination of Cholesterol Content: the centrifugal 10min of fermented liquid 5000rmin-1, retains fermentation supernatant.The physiological saline centrifuge washing 3 time of precipitation thalline with original fermented solution equivalent, washings retains.In fermented supernatant fluid and thalline washings, cholesterol level all measures by the O-phthalaldehyde method of improvement.
Concrete grammar is as follows: pipette 0.5mL sample in a clean tube, adds the ethanol of 3mL95% and the KOH of 2mL50%.Vibration mixing, saponification 10min in 60 DEG C of water-baths.After being cooled to room temperature, adding 5mL normal hexane, mix completely, extraction 1min.Add the mixing of 3mL distilled water again, left at room temperature 15min.After every separation, accurately draw 2.5mL to another clean tube from hexane layer.60 DEG C of water-baths volatilize normal hexane, add the o-phthalaldehyde(OPA) working fluid that 4mL newly prepares, and develop the color under room temperature 10min.Add the 2mL vitriol oil again, mix completely immediately, room temperature leaves standstill 10min.The light absorption value at 550nm place is measured in 90min.
Removing cholesterol rate can be drawn by following formula:
Decreasing ratio=(1-fermented supernatant fluid light absorption value/do not connect bacterium culture medium light absorption value) × 100%
The decreasing ratio calculating Bacterium lacticum cholesterol degradation is 55.19%.
Prove that a kind of plant lactobacillus of the present invention has good Degradation to cholesterol by experiment, can be used in medical aspect or healthcare products aspect.

Claims (3)

1. a plant lactobacillus, is characterized in that, described plant lactobacillus is preserved in China Committee for Culture Collection of Microorganisms's common micro-organisms center on December 14th, 2015, and preserving number is CGMCCNO.11875..
2. the application of plant lactobacillus according to claim 1 on cholesterol degradation.
3. plant lactobacillus according to claim 1 is for the preparation of the application on the medicine of cholesterol degradation or healthcare products.
CN201610066292.8A 2016-01-29 2016-01-29 Lactobacillus plantarum and application thereof Pending CN105567601A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115873761A (en) * 2022-11-10 2023-03-31 重庆第二师范学院 Lactobacillus plantarum KSFY01 and application thereof

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115873761A (en) * 2022-11-10 2023-03-31 重庆第二师范学院 Lactobacillus plantarum KSFY01 and application thereof

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