Traditional Culture Encyclopedia - Traditional stories - What is the difference between the planting methods of solid strains and liquid strains?
What is the difference between the planting methods of solid strains and liquid strains?
Generally, the production process of solid strain is expanded from test tube mother strain to secondary strain and tertiary strain, which has long production cycle, high pollution rate and high cost, requires a lot of manpower and space, and is difficult to manage. It is difficult to meet the needs of mass production.
The general technological process is as follows: mother seed → mother seed propagation (medium preparation → inoculation → culture inspection → finished product) ↓
↓ ← finished stock ← (culture inspection ← cooling inoculation ← sterilization ← ingredient packaging) stock production.
Production of cultivated seeds (ingredient packaging → sterilization → cooling inoculation → culture inspection) → finished cultivated seeds.
The production of liquid strains has the characteristics of high purity, strong vitality and rapid propagation. Inoculation into culture medium has the characteristics of good fluidity, many germination points and fast bacterial growth. Can be produced on a large scale.
Liquid strain production process
Process flow chart:
Air compression → filtration
↓
Ingredients → canning → sterilization → cooling → inoculation → culture → liquid seeds.
↑
Test tube slant seed → special mother seed for triangular bottle liquid
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