1In depth development of freeze-drying technology for freeze-drying flocs

1. Process optimization and innovation

Low temperature quenching technology: in-50Freeze quickly below ℃ to form a uniform ice crystal structure, reducing the damage of active ingredients (such as collagen triple helix), and achieving an activity retention rate of up to98%The above.

Vacuum drying parameters: using a gradient heating program (such as from-40℃ gradually increases35℃), combined with vacuum degree control（5-10 Pa）Ensure the efficiency of water sublimation and avoid thermal decomposition.

Dynamic freeze-drying monitoring: Real time control of freeze-drying curve through algorithms, optimization of energy consumption and finished porosity, and improvement of disintegration speed（3-5Dissolve within seconds.

2. Active ingredient protection technology

Microcapsule encapsulation: willEGFTheSODEncapsulate easily inactivated ingredients in liposomes or nanocarriers to prevent oxidation or degradation during the freeze-drying process.

Low temperature protectant: Adding glass forming agents such as trehalose and mannitol to form an amorphous glass state during freezing, maintaining the stability of the active ingredient.

IIDesign of main material for freeze-drying flocs

1. Core skeleton material

Excipients (main framework):

Mannitol: high porosity, low hygroscopicity, forming a porous structure, accelerating dissolution, proportion0.25%-1.5%.

lactose/Sorbitol: regulates the brittleness of freeze-dried flocs, prevents clumping during storage, and is often used in combination with mannitol.

Protective agent: Sodium hyaluronate: moisturizes and protects active ingredients, while serving as a "ice crystal template" during freeze-drying to reduce structural damage.

Hydrolyzed collagen: enhances the biocompatibility of freeze-dried fibers and synergistically improves the repair effect with the main framework.

2. Formula ratio design

Proportion of excipient and protective agent: usually according to1:1-2The quality ratio of the compound, such as the combination of mannitol and sodium hyaluronate, balances stability and activity.

Active ingredient loading: Control the amount of collagen, lidocaine, and other additives within a certain range0.01%-0.5%To avoid freeze-drying failure caused by overload.