CN116355812A - Lactobacillus reuteri (Limosilactobacillus reuteri) HCLR01 and application thereof in preparation of anti-aging products - Google Patents

Lactobacillus reuteri (Limosilactobacillus reuteri) HCLR01 and application thereof in preparation of anti-aging products Download PDF

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CN116355812A
CN116355812A CN202310530608.4A CN202310530608A CN116355812A CN 116355812 A CN116355812 A CN 116355812A CN 202310530608 A CN202310530608 A CN 202310530608A CN 116355812 A CN116355812 A CN 116355812A
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lactobacillus reuteri
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刘晓宇
刘杰
王怀玲
郭奕彤
林沛纯
单紫庆
张渐麒
林燕玲
吴嘉顺儿
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Shenzhen Haichuang Biotechnology Co ltd
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Abstract

The invention relates to the technical field of medicine, and particularly discloses lactobacillus reuteri (Limosilactobacillus reuteri) HCLR01 and application thereof in preparation of products with anti-aging effects. The lactobacillus reuteri (Limosilac tobacillus reuteri) HCLR01 has a deposit number of GDMCC No:63144. the lactobacillus reuteri cell lysate is a lactobacillus reuteri (Limosilactobacillus reuteri) HCLR01 cell lysate. Research shows that the lactobacillus reuteri (Limosilactobacillus reuteri) HCLR01 has anti-aging effect; and the anti-aging effect is obviously better than that of the known lactobacillus reuteri. The lactobacillus reuteri (Limosilactobacillus reuteri) HCLR01 and the cleavage product thereof have anti-aging effect; therefore, the lactobacillus reuteri (Limosilac tobacillus reuteri) HCLR01 or the cracking product thereof provided by the invention is used as an effective component and has important application value in preparing products with anti-aging effect.

Description

Lactobacillus reuteri (Limosilactobacillus reuteri) HCLR01 and application thereof in preparation of anti-aging products
Technical Field
The invention relates to the technical field of biomedicine, in particular to lactobacillus reuteri (Limosilactobacillus reuteri) HCLR01 and application thereof in preparing a product with an anti-aging effect.
Background
The causative factors of body aging are complex and diverse, wherein oxidative stress and oxidative damage are important causative factors of body aging. Therefore, alleviation of oxidative stress, oxidative damage is an important measure against aging of the body. A great deal of researches show that probiotics and metabolites thereof planted in the human body have excellent antioxidant activity, and more intensive researches show that the regulation of the probiotics and metabolites thereof on intestinal microbiota can well improve the antioxidant capacity of intestinal tracts, thereby further delaying the aging of organisms.
Gamma-aminobutyric acid (gamma-aminobutyric acid) is used as a short chain fatty acid secreted by probiotics, and has the activities of reducing blood pressure, aiding sleep, enhancing liver function and the like; gamma-aminobutyric acid has anti-wrinkle and anti-aging activities in skin care products. Lactobacillus reuteri has strong adhesion capability to intestinal mucosa, can improve intestinal flora distribution, antagonizes harmful bacteria colonization, and is one of common probiotics. However, the existing known lactobacillus reuteri has smaller amount of gamma-aminobutyric acid secretion, and the anti-aging effect needs to be further improved.
Disclosure of Invention
In order to overcome at least one technical problem existing in the prior art, the invention firstly provides lactobacillus reuteri (Limosilactobacillus reuteri) HCLR01.
The invention provides lactobacillus reuteri (Limosilactobacillus reuteri) HCLR01, which has the preservation number of GDMCC No:63144.
the strain was deposited at the microorganism strain collection of Guangdong province (address was the microbiological institute of Guangdong province, hirudo 100 # college, 59 # building 5, guangdong province, university, city, 1 month 13).
The form of the lactobacillus reuteri (Limosilactobacillus reuteri) HCLR01 is in a bent rod shape, and the tail end of the bent rod shape is round; analyzing the 16s rDNA sequence (shown as SEQ ID NO: 1), and comparing in NCBI database by using the sequencing result; thus, lactobacillus reuteri was finally identified (Limosilactobacillus reuteri).
The inventor screens out a brand new lactobacillus reuteri (Limosilactobacillus reuteri) HCLR01 in a large number of experiments, and the inventor surprisingly finds that the lactobacillus reuteri has an anti-aging effect in further researches; and the anti-aging effect is significantly better than that of the prior known lactobacillus reuteri (Limosilactobacillus reuteri).
The invention also provides a lactobacillus reuteri cell lysate, which is a lactobacillus reuteri (Limosilactobacillus reuteri) HCLR01 cell lysate.
The inventor finds that the lactobacillus reuteri (Limosilactobacillus reuteri) HCLR01 cell lysate also has anti-aging effect in the research; and the anti-aging effect is also obviously better than that of the prior known lactobacillus reuteri cell lysate.
Preferably, the lactobacillus reuteri cell lysate is prepared by the following method:
(1) Mixing lactobacillus reuteri (Limosilactobacillus reuteri) HCLR01 with water, and performing ultrasonic crushing to obtain crushed liquid; freeze-drying the crushed liquid, and degreasing to obtain a freeze-dried product A;
(2) Mixing the freeze-dried product A with water, dialyzing by using a dialysis membrane with the pore diameter of 0.8-1.2 kD, and taking the freeze-dried product B of the freeze-dried dialysate to obtain the lactobacillus reuteri cell lysate.
The inventors have surprisingly found in the study that the choice of pore size of the dialysis membrane in step (2) plays a decisive role in the anti-aging effect of the prepared lactobacillus reuteri cell lysate; a great number of experimental researches show that the anti-aging effect of the lactobacillus reuteri cell lysate prepared by dialysis with the dialysis membrane with the pore diameter of 0.8-1.2 kD is greatly higher than that of the lactobacillus reuteri cell lysate prepared by dialysis with the dialysis membrane with other pore diameters.
Preferably, the time of ultrasonic crushing is 10-30 min.
Preferably, the ultrasonic power of the ultrasonic crushing is 500-1000W, and the ultrasonic frequency of the ultrasonic crushing is 20-40 KHz.
Preferably, lactobacillus reuteri (Limosilactobacillus reuteri) HCLR01 described in step (1) is lactobacillus reuteri (Limosilactobacillus reuteri) HCLR01 lyophilized powder.
Preferably, the weight ratio of the lactobacillus reuteri (Limosilactobacillus reuteri) HCLR01 lyophilized powder to water in the step (1) is 1: 8-15.
Most preferably, the weight ratio of lactobacillus reuteri (Limosilactobacillus reuteri) HCLR01 lyophilized powder to water in step (1) is 1:10.
preferably, in step (2) the dialysis is performed with a dialysis membrane having a pore size of 1 kD.
Preferably, the weight ratio of the lyophilized product A to water in step (2) is 1: 8-15.
Most preferably, the weight ratio of the lyophilized product a to water in step (2) is 1:10.
the invention also provides an application of the lactobacillus reuteri (Limosilactobacillus reuteri) HCLR01 in preparation of products with anti-aging effect.
The invention also provides application of the lactobacillus reuteri cell lysate in preparation of products with anti-aging effect.
Preferably, the product is a food, dietary supplement, functional food, health product or pharmaceutical.
Preferably, the dosage form of the product is pill, capsule, tablet, granule or powder.
The beneficial effects are that: the invention firstly provides a brand new lactobacillus reuteri (Limosilactobacillus reuteri) HCLR01; research shows that it has anti-aging effect; and the anti-aging effect is obviously better than that of the known lactobacillus reuteri. The lactobacillus reuteri (Limosilactobacillus reuteri) HCLR01 and the cleavage product thereof have anti-aging effect; therefore, the lactobacillus reuteri (Limosilactobacillus reuteri) HCLR01 or the cracking product thereof provided by the invention is used as an effective component and has important application value in preparing products with anti-aging effect.
Detailed Description
The technical scheme of the present invention will be clearly and completely described in the following examples. It will be apparent that the described embodiments are only some, but not all, embodiments of the invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
EXAMPLE 1 isolation and characterization of Lactobacillus reuteri (Limosilactobacillus reuteri) HCLR01
(1) Enrichment culture of strains: respectively taking fecal treatment liquid from different healthy children, adding into culture medium (peptone 8.5g/L, yeast powder 8.5g/L, glutamic acid 8.5g/L, glucose 9.5g/L, tween 80 1.2mL/L, sodium acetate 5.5g/L, dipotassium hydrogen phosphate 2.2g/L, magnesium sulfate 0.6g/L, manganese sulfate 0.4 g/L), and standing at 33deg.C for 6 hr.
(2) Qualitative detection: concentrating and qualitatively detecting the culture solution after culturing in the step (1). Thin layer chromatography, the concentrated culture solution is spotted on a silica gel precast slab, and the chromatographic solution is developed. The chromatographic liquid adopts chloroform: glacial acetic acid: water (65:25:10), 0.5% ninhydrin was added. Naturally airing after development is finished, developing at 98 ℃ for 2min, and comparing with a standard substance.
(3) Isolation of single colonies: microscopic examination is carried out on the culture solution with the gamma-aminobutyric acid generated in the step (2), after the bacterial species are judged, the culture solution is diluted and coated on a coating plate, and the coating plate culture medium contains 12g/L CaCO 3 The probiotic solid culture medium (8.8 g/L peptone, 5.5g/L beef extract powder, 8.8g/L yeast extract powder, 10.0g/L glucose, 2.2g/L dipotassium hydrogen phosphate, 2.0g/L tri-ammonium citrate, 5.5g/L sodium acetate, 0.6g/L magnesium sulfate, 0.4g/L manganese sulfate, 1.2g/L tween-80 and 16.0g/L agar) is cultured for 6 hours at 33 ℃, a plurality of colonies with dissolved calcium rings (smooth and regular edges) are picked up and inoculated on the culture medium containing glutamic acid, and the culture medium is kept at 33 ℃ for 6 hours, and the gamma-aminobutyric acid yield is qualitatively detected and compared. Selecting a strain with a rod-like shape and a round tail end and highest gamma-aminobutyric acid yield to obtain lactobacillus reuteri (Limosilactobacillus reuteri) HCLR01.
The strain is analyzed for 16s rDNA sequence (shown as SEQ ID NO: 1), and the sequencing result is utilized for comparison in NCBI database, so that the strain is identified as lactobacillus reuteri (Limosilactobacillus reuteri).
EXAMPLE 2 preparation of Lactobacillus reuteri (Limosilactobacillus reuteri) HCLR01 lyophilized powder
(1) Lactobacillus reuteri (Limosilactobacillus reuteri) HCLR01 seed liquid preparation: inoculating Lactobacillus reuteri (Limosilactobacillus reuteri) HCLR01 strain into a culture medium (the culture medium comprises 8.8g/L of peptone, 5.5g/L of beef extract powder, 8.8g/L of yeast extract powder, 10.0g/L of glucose, 2.2g/L of dipotassium hydrogen phosphate, 2.0g/L of triammonium citrate, 5.5g/L of sodium acetate, 0.6g/L of magnesium sulfate, 0.4g/L of manganese sulfate, 1.2g/L of tween-80 and 16.0g/L of agar), and performing shake flask fermentation for 12h to obtain the Lactobacillus reuteri (Limosilactobacillus reuteri) HCLR01 seed liquid with OD 600 more than 1.5.
(2) And (3) performing expansion culture: inoculating lactobacillus reuteri (Limosilactobacillus reuteri) HCLR01 seed liquid obtained in the step (1) into a liquid culture medium (the culture medium comprises 8.8g/L of peptone, 5.5g/L of beef extract, 8.8g/L of yeast extract, 10.0g/L of glucose, 2.2g/L of dipotassium hydrogen phosphate, 2.0g/L of tri-ammonium citrate, 5.5g/L of sodium acetate, 0.6g/L of magnesium sulfate, 0.4g/L of manganese sulfate, 1.2g/L of tween-80 and 16.0g/L of agar) in a 20L fermentation tank; at pH 6; stirring and culturing for 48h at 37 ℃; ending fermentation to obtain fermentation liquor;
(3) And (3) centrifugally collecting thalli from the fermentation liquid obtained in the step (2), adding water and the freeze-drying protective agent skimmed milk powder, uniformly mixing, and freeze-drying to obtain the lactobacillus reuteri (Limosilactobacillus reuteri) HCLR01 freeze-dried powder with the viable count of 100 hundred million cfu/g.
EXAMPLE 3 preparation of Lactobacillus reuteri lysate
(1) Mixing lactobacillus reuteri (Limosilactobacillus reuteri) HCLR01 lyophilized powder (100 hundred million cfu/g) with 10 times of water; then carrying out ultrasonic crushing for 15min under the condition that the ultrasonic power is 900W and the ultrasonic frequency is 25KHz to obtain crushing liquid; freeze-drying the crushed liquid, degreasing the crushed liquid by isopropanol to obtain a freeze-dried product A;
(2) Mixing the freeze-dried product A with 10 times of water, dialyzing by using a dialysis membrane with the pore diameter of 1kD, and taking the freeze-dried product B of the freeze-dried dialysate to obtain the lactobacillus reuteri cell lysate.
Comparative example 1 preparation of Lactobacillus reuteri lysate
(1) Mixing lactobacillus reuteri LR-G100 lyophilized powder (100 hundred million cfu/G commercially available) with 10 times of water; then carrying out ultrasonic crushing for 15min under the condition that the ultrasonic power is 900W and the ultrasonic frequency is 25KHz to obtain crushing liquid; freeze-drying the crushed liquid, degreasing the crushed liquid by isopropanol to obtain a freeze-dried product A;
(2) Mixing the freeze-dried product A with 10 times of water, dialyzing by using a dialysis membrane with the pore diameter of 1kD, and taking the freeze-dried product B of the freeze-dried dialysate to obtain the lactobacillus reuteri cell lysate.
Comparative example 2 preparation of Lactobacillus reuteri lysate
(1) Mixing lactobacillus reuteri (Limosilactobacillus reuteri) HCLR01 lyophilized powder (100 hundred million cfu/g) with 10 times of water; then carrying out ultrasonic crushing for 15min under the condition that the ultrasonic power is 900W and the ultrasonic frequency is 25KHz to obtain crushing liquid; freeze-drying the crushed liquid, degreasing the crushed liquid by isopropanol to obtain a freeze-dried product A;
(2) Mixing the freeze-dried product A with 10 times of water, dialyzing by using a dialysis membrane with the pore diameter of 0.5kD, and taking the freeze-dried product B of the freeze-dried dialysate to obtain the lactobacillus reuteri cell lysate.
Comparative example 3 preparation of Lactobacillus reuteri lysate
(1) Mixing lactobacillus reuteri (Limosilactobacillus reuteri) HCLR01 lyophilized powder (100 hundred million cfu/g) with 10 times of water; then carrying out ultrasonic crushing for 15min under the condition that the ultrasonic power is 900W and the ultrasonic frequency is 25KHz to obtain crushing liquid; freeze-drying the crushed liquid, degreasing the crushed liquid by isopropanol to obtain a freeze-dried product A;
(2) Mixing the freeze-dried product A with 10 times of water, dialyzing with a dialysis membrane with a pore size of 2kD, and taking the freeze-dried product B of the dialysate after freeze-drying to obtain the lactobacillus reuteri cell lysate.
Experimental example 1 anti-aging experiment
C, taking caenorhabditis elegans L4 larvae, and randomly dividing the larvae into 7 groups of 100 larvae each; wherein, the experimental group 6 and the blank control group 1; the larvae of the caenorhabditis elegans L4 of the experimental group are respectively placed on NGM flat plates containing 2mg/mL of samples to be tested for culture; placing the caenorhabditis elegans L4 larvae of the blank control group on an NGM plate without a drug to be tested for culture; marked as dead by the non-mobile caenorhabditis elegans; each group of experiments was repeated 3 times per day; calculating the average life span of each group of caenorhabditis elegans; the experimental results are shown in Table 1.
Wherein, the test sample of the experimental group 1 is lactobacillus reuteri (Limosilactobacillus reuteri) HCLR01 freeze-dried powder (100 hundred million cfu/g); the test sample of the experimental group 2 is lactobacillus reuteri LR-G100 freeze-dried powder (100 hundred million cfu/G on the market); the test sample of experimental group 3 was lactobacillus reuteri lysate prepared as described in example 3; the test sample of experiment group 4 is the lactobacillus reuteri lysate prepared according to the method described in comparative example 1; the test sample of experimental group 5 was a lactobacillus reuteri lysate prepared as described in comparative example 2; the test sample of experimental group 6 was a lactobacillus reuteri lysate prepared as described in comparative example 3.
TABLE 1 anti-aging test results
Figure BDA0004224429220000061
From the experimental results in Table 1, it can be seen that the average life span of C.elegans in experimental group 1 is significantly higher than that in experimental group 2. This illustrates: the brand new lactobacillus reuteri (Limosilactobacillus reuteri) HCLR01 has an anti-aging effect; and the anti-aging effect is obviously better than that of the prior known lactobacillus reuteri.
As can be seen from the experimental results in Table 1, the average life span of the caenorhabditis elegans of experimental group 3 is significantly higher than that of experimental group 4. This illustrates: the lactobacillus reuteri (Limosilactobacillus reuteri) HCLR01 cell lysate also has an anti-aging effect; and the anti-aging effect is also obviously better than that of the prior known lactobacillus reuteri cell lysate.
From the experimental results in Table 1, it can be seen that the average life span of C.elegans of experimental group 3 is significantly higher than that of experimental groups 5 and 6. This illustrates: the pore size of the dialysis membrane in the step (2) plays a decisive role in the anti-aging effect of the prepared lactobacillus reuteri cell lysate; the anti-aging effect of the lactobacillus reuteri cell lysate prepared by dialysis with the dialysis membrane with the aperture of 1kD is greatly higher than that of the lactobacillus reuteri cell lysate prepared by dialysis with the dialysis membrane with other apertures; so that the prepared lactobacillus reuteri cell lysate has excellent anti-aging effect.

Claims (10)

1. Lactobacillus reuteri (Limosilactobacillus reuteri) HCLR01 deposited under the accession number GDMCC No:63144.
2. a lactobacillus reuteri cell lysate, wherein the lactobacillus reuteri cell lysate is a lactobacillus reuteri (Limosilactobacillus reuteri) HCLR01 cell lysate.
3. Lactobacillus reuteri cell lysate according to claim 2, characterized in that it is prepared by the following method:
(1) Mixing lactobacillus reuteri (Limosilactobacillus reuteri) HCLR01 with water, and performing ultrasonic crushing to obtain crushed liquid; freeze-drying the crushed liquid, and degreasing to obtain a freeze-dried product A;
(2) And mixing the freeze-dried product A with water, dialyzing by using a dialysis membrane with the pore diameter of 0.8-1.2 kD, and taking a freeze-dried product B of the freeze-dried dialysate to obtain the lactobacillus reuteri cell lysate.
4. Lactobacillus reuteri cell lysate according to claim 2, characterized in that the time of the ultrasonication is 10-30 min.
5. The lactobacillus reuteri cell lysate of claim 2, wherein the ultrasonic power of the ultrasonic disruption is 500-1000 w and the ultrasonic frequency of the ultrasonic disruption is 20-40 khz.
6. Lactobacillus reuteri cell lysate according to claim 2, wherein the lactobacillus reuteri (Limosilactobacillus reuteri) HCLR01 in step (1) is a lactobacillus reuteri (Limosilactobacillus reuteri) HCLR01 lyophilized powder.
7. The lactobacillus reuteri cell lysate of claim 6, wherein the weight ratio of lactobacillus reuteri (Limosilactobacillus reuteri) HCLR01 lyophilized powder to water in step (1) is 1: 8-15 parts;
most preferably, the weight ratio of lactobacillus reuteri (Limosilactobacillus reuteri) HCLR01 lyophilized powder to water in step (1) is 1:10.
8. the lactobacillus reuteri cell lysate of claim 6, wherein the dialysis in step (2) is performed with a dialysis membrane having a pore size of 1 kD.
9. The lactobacillus reuteri cell lysate of claim 6, wherein the weight ratio of the lyophilized product a to water in step (2) is 1: 8-15 parts;
most preferably, the weight ratio of the lyophilized product a to water in step (2) is 1:10.
10. use of lactobacillus reuteri (Limosilactobacillus reuteri) HCLR01 as claimed in claim 1 or a lactobacillus reuteri cell lysate as claimed in any of claims 2 to 9 in the manufacture of a product having anti-ageing properties.
CN202310530608.4A 2023-05-12 2023-05-12 Lactobacillus reuteri (Limosilactobacillus reuteri) HCLR01 and application thereof in preparation of anti-aging products Pending CN116355812A (en)

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