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Method for preparing plant-based fat cultured meat

A plant and medium technology, applied in the field of stem cells and animal cell cultured meat, can solve the problems of inedible cross-linking agents, poor culture effect, and contrary to the original intention, and achieve the effect of improving sensory quality and nutritional characteristics

Pending Publication Date: 2022-07-12
NANJING JOES FUTURE FOOD TECH CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] At present, the conventional scaffolds for adipogenic stem cell culture are: animal-derived scaffolds such as collagen scaffolds, and the original intention of cultured meat is to reduce or avoid the use of animal-derived materials. Therefore, animal-derived scaffolds are contrary to the original intention of cultured meat; another example is cellulose scaffolds. Such as plant-derived scaffolds, the cell adhesion effect is poor, and the culture effect is not good
Moreover, the existing conventional scaffolds need to be cross-linked with chemical reagents when inoculating cells. Most of the cross-linking agents are inedible due to safety issues and are expensive, which seriously restricts the promotion of cultured meat.

Method used

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  • Method for preparing plant-based fat cultured meat
  • Method for preparing plant-based fat cultured meat
  • Method for preparing plant-based fat cultured meat

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0071] Example 1 Isolation of porcine adipose-derived mesenchymal stem cells:

[0072] (1) Single cell isolation: Take freshly slaughtered piglets and soak them in 75% (volume percent) ethanol for one minute, then take the subcutaneous adipose tissue of the neck under aseptic conditions and store it in the basal culture medium. Under sterile conditions, rinse 3 times with PBS buffer containing high concentration of penicillin and streptomycin, cut off the visible blood vessels and connective tissue in the adipose tissue, and cut the adipose tissue into 1mm 3 The left and right small pieces were digested with 0.1% (mass percentage) type I collagenase and 3% (volume percentage) penicillin-streptomycin double-antibody digestion solution for 90 min (37°C, shaking in a water bath) ( figure 1 A-C).

[0073] (2) After digestion, neutralize the digestion solution with an equal volume of complete culture solution, filter with 100 μm and 40 μm cell sieves, and centrifuge at 1500 rpm fo...

Embodiment 2

[0076] Example 2 Preparation and optimal sterilization method of peanut drawing protein scaffold

[0077] (1) Preparation of peanut drawing protein scaffold: the commercially available peanut drawing protein (Qingdao Changshou Food Co., Ltd., filament type) was soaked in distilled water for 5 minutes, and it was completely swelled by water absorption. The results showed that the commercially available peanut protein The stent is light yellow after fully absorbing water, with a loose and porous structure, soft in wet state, and has a certain elasticity ( figure 2 A). Cut the peanut drawing protein scaffold into cubes with a size of 0.6cm × 0.6cm × 0.1cm ( figure 2 B), sterilize the peanut drawing protein scaffold with different sterilization methods:

[0078] Group 1: Add 15 mL of 75% alcohol for immersion and sterilization for 1.5 hours, discard the alcohol, wash three times with 15 mL of PBS, and soak in 15 mL of growth medium overnight;

[0079] Group 2: The cut scaffol...

Embodiment 3

[0086] Example 3 Three-dimensional plant-based cell scaffold material suitable for fat cultured meat and material pretreatment

[0087] (1) Adhesion of adipose stem cells on three kinds of plant-based protein scaffolds: In Example 2, it has been verified that peanut silk protein scaffolds can provide cell adhesion sites for adipose stem cells. This example further explores whether wheat silk protein and soybean silk protein are Also suitable for use as a cell scaffold for fat cultured meat. The specific operation is as follows: according to the steps of Example 2 (3), the adipose stem cells obtained in Example 1 are labeled with a live cell tracer and then inserted into a wheat drawing protein scaffold (Qingdao Changshou Food Co., Ltd., filament type) and soybean drawing On the protein scaffold (Qingdao Changshou Food Co., Ltd., filament type), the adhesion of cells on the wheat protein scaffold and soybean protein scaffold was observed with an inverted phase contrast fluoresc...

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Abstract

In order to overcome the defects of conventional scaffolds for adipogenic stem cell culture and the defects of flavor, nutrition, taste, juiciness and the like of existing cultured meat, the invention provides application of plant drawing protein in an adipogenic stem cell in-vitro culture scaffold and a preparation method of plant-based fat cultured meat. The method specifically comprises the following steps: S1, pretreatment of a plant wiredrawing protein scaffold: after plant wiredrawing protein absorbs water and expands, cutting the plant wiredrawing protein into appropriate sizes, drying, sterilizing, and soaking the plant wiredrawing protein scaffold in a growth culture medium overnight under an aseptic condition; s2, adding the adipogenic stem cells into a growth culture medium to prepare a cell suspension, inoculating the cell suspension onto a plant drawing protein scaffold, and carrying out multiplication culture; and S3, carrying out proliferation culture until the coverage rate of cells on the scaffold reaches 80-90%, carrying out induced differentiation culture until the cells are differentiated into fat cells, and finally preparing the plant-based fat culture meat with the animal meat flavor.

Description

technical field [0001] The invention belongs to the technical field of stem cell and animal cell cultured meat, and in particular relates to a preparation method of vegetable-based fat cultured meat. Background technique [0002] Meat is rich in protein and micronutrients and has been widely consumed by humans due to easy access to energy, high-quality protein, palatability, and energy. As the world's population grows and becomes more affluent, meat consumption increases year by year. Traditional meat production relies on animal husbandry and not only carries risks of animal diseases, epidemics and antibiotic abuse, but also negatively impacts animal welfare, resources and the environment, and even threatens public health such as ischaemic heart disease and colorectal cancer. Therefore, in order to achieve sustainable meat production, it is urgent to develop a green and efficient way of meat production to partially replace traditional meat production. [0003] Cultured me...

Claims

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Application Information

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IPC IPC(8): C12N5/077C12N5/0775A23J3/14A23J3/16A23J3/18A23J3/22
CPCC12N5/0653A23J3/14A23J3/16A23J3/18A23J3/225C12N2506/1384C12N2533/50C12N2501/115C12N2501/33C12N2500/40C12N2501/39C12N2501/999C12N2506/1353C12N2506/45C12N2506/02C12N2506/03C12N2501/998Y02A50/30
Inventor 周光宏宋文娟丁世杰李惠侠唐长波刘裴裴
Owner NANJING JOES FUTURE FOOD TECH CO LTD
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