Скачать или смотреть Careddi supercritical co2 extraction machine for oolong tea extraction

Careddi supercritical co2 extraction machine applied for extraction of tea extraction to produce bottle tea drinks .

Process: Bottled Oolong Tea Production via Supercritical CO₂ Extraction
1. Raw Material Preparation
High-quality dried Oolong tea leaves are selected, cleaned, and sometimes lightly crushed to increase surface area for efficient extraction.

2. Supercritical CO₂ Extraction (Core Step)
The prepared leaves are loaded into the extraction vessel of a system like the Careddi 150LX3. The vessel is sealed, and CO₂ is pressurized and heated beyond its critical point (31°C, 74 bar), turning it into a supercritical fluid. This supercritical CO₂ acts as a solvent, penetrating the leaf matrix and selectively dissolving the target compounds:

First Stage (Lower Pressure): Primarily extracts volatile aromatic oils and top notes.

Second Stage (Higher Pressure): Extracts polyphenols, catechins, pigments, and other flavor/body compounds.
The process is gentle and oxygen-free, preserving heat-sensitive components.

3. Separation & Recovery
The CO₂, now laden with tea compounds, flows into a separator. Here, the pressure is reduced, causing the CO₂ to revert to a gaseous state and evaporate. The extracted compounds are collected as a pure, concentrated, and highly aromatic liquid Oolong essence. The gaseous CO₂ is typically condensed and recycled back into the system.

4. Post-Extraction Refinement
The raw extract undergoes further processing:

Centrifugation: Removes any fine particulate matter to ensure clarity.

Concentration (Optional): Gentle vacuum evaporation may be used to achieve the desired potency.

5. Beverage Formulation & Blending
The refined Oolong concentrate is precisely blended with purified water in a mixing tank. Sweeteners (e.g., sugar, stevia), acids (e.g., citric acid for shelf stability and brightness), or other natural flavors may be added at this stage to achieve the target taste profile.

6. Filling, Packaging & Pasteurization

The finished liquid is filtered and then filled into sterile bottles or cans.

To ensure microbial safety and shelf stability, the bottled product typically undergoes a pasteurization process (e.g., tunnel pasteurization where filled bottles are heated to a specific temperature for a set time).

Finally, bottles are capped, labeled, and packed for distribution.