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Gaokang - Lab Scale Supercritical Extraction Machine
The supercritical fluid technology is a new-type separation technology in modern chemical separaton. The supercritical extraction takes CO2 as the solvent, as CO2 fluid under supercritical state has larger density and dielectric constant, larger dissolvability against substances, which can change abruptly when temperature and temperature change therefore it has not only the selection if dissolvability against some substances, the separation of the solvent with the extracted substances is also easily. The supercritical CO2 extraction is specially suitable for extraction of fat-soluble and heat-sensitive substances with high boiling point.
Take CO2 as the solvent to make extraction and purification upon a lot of products such as biological products, foodstuff and medicines.
The supercritical units select the CO2 medium as the supercritical extraction agent, which makes it have the following characteristics:
- Low critical temperature suitable for extraction and purification of heat-sensitive compound.
- Being capable to provide inert environment to avoid oxidation of products and affection of effective content of extracts.
- Fast extraction speed (generally 1-2 hours per run), no toxicity, non-flammable, safe application and no pollution upon environment.
- No residue of solvent, no nitrate and ions of heavy mental.
- Wide operating range, easy to adjust
- Good selectivity, and through controlling the pressure and temperature, targeted extraction of the required ingredients
- Low operation temperature, the extraction is carried out at a temperature close to room temperature, which is particularly suitable for heat-sensitive components. The extraction process eliminates the possibility of oxidative and photoresponsive reactions, and the extract retains the natural flavor.
- Only one step from extraction to separation, the CO2 after extraction will not remain in the extracts
- CO2 is non-toxic, tasteless, non-flammable and easy to get and reused
- Fast extraction speed
- Easy to operate and adjust;
- Well selectivity. Can extract out requested component according to control pressure and temperature.
- Low operating temperature. Operation often happen under room temperature, which is much better for Heat-sensitive Materials. Because during extraction process, it has avoid “when oxygen oxygenation” and “when light reaction”, product can keep its natural tastes.
- Finish within one step, CO2 won’t be left on the products.
- CO2 is one kind gas of non-poisonous, tasteless, inflammable, cheap and can be cycle use.
- Quick extraction speed.