06

2023

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05

What are the advantages of Supercritical carbon dioxide extraction

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Supercritical carbon dioxide is a separation and extraction technology using compressed carbon dioxide as solvent. Its advantage is that it is a green, non-toxic, and residue free extraction method, and can also be used to extract various chemical components from different raw materials. The experimental data showed that Supercritical carbon dioxide extraction had a good effect on the extraction of various alcohols in Cider. Under high pressure, the density of carbon dioxide increases, becoming a state between the liquid and gaseous states.

Supercritical CO2 is a separation and extraction technique that uses compressed CO2 as a solvent. Its advantage is that it is a green, non-toxic, and residue-free extraction method, and it can also be used to extract various chemical components from different raw materials. Experimental data show that supercritical carbon dioxide extraction shows good results in extracting a variety of alcohols in cider. Under high pressure, the density of carbon dioxide becomes greater and becomes a state between the liquid state and the gaseous state.

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In this state, the permeability of carbon dioxide is greatly increased, which can effectively penetrate the cell wall in the extracted substance and improve the extraction efficiency. In addition, carbon dioxide is easy to remove and will not cause pollution and impact on the extracted substances, which has attracted more and more attention from researchers.

 

The operation method of supercritical carbon dioxide extraction consists of the following seven steps: sample pretreatment, sample loading, fluid heating to supercritical conditions, extraction, separation, recovery, and quality assessment of extracted substances. Understanding these methods of operation can enable researchers to master more skills when conducting experiments and improve extraction efficiency. For example, the sample pretreatment stage is designed to remove moisture and impurities that may be present in the sample, resulting in purer extraction results. Attention to optimizing operational methods is essential to achieving results.

 

Supercritical CO2 extraction can be used in a variety of applications, such as cosmetics production, medical research, agriculture, food processing, etc. Its advantages are that it is non-toxic, green, effective, and does not cause contamination and residue to the sample. In the field of food processing, people can use this method to extract plant pigments, fatty acids, polyphenols and other substances to produce safer, healthier and more nutritious food.

 

Compared with traditional organic solvent extraction methods, supercritical carbon dioxide extraction has more significant advantages, such as easy operation, high extraction efficiency, pollution, and low recovery cost. However, supercritical CO2 extraction is not suitable for all types of extracted species, so the species to be extracted need to be evaluated and experimentally verified before the study is conducted. In addition, the choice of different technologies has a certain combination. People can combine supercritical carbon dioxide extraction and other technologies according to actual needs to extract target substances in specific fields.

 

Although supercritical CO2 extraction has been widely used, there are also some problems and challenges. For example, some chemicals are difficult to dissolve in the supercritical carbon dioxide state, and the extraction effect is poor; Need expensive instruments, pressure gauges and other auxiliary instruments; Fine control of gas volume, flow rate and other parameters is required. In addition, the production of supercritical carbon dioxide is difficult, which is also a major bottleneck in the development of this technology. In the future, more engineers and scientists will be needed to invest in the research and development of this technology to promote its application in a wider range of fields.

 

The demand for environmental protection and effectiveness is growing, and the prospect of supercritical carbon dioxide extraction technology is considerable. Supercritical CO2 extraction has high extraction efficiency, high environmental quality, and is not easy to cause pollution, which reduces the difficulty of post-processing. In view of this, people also need to combine supercritical carbon dioxide extraction technology with cutting-edge technologies such as artificial intelligence technology to promote the gradual development of automated and intelligent production models. Supercritical CO2 extraction technology will play an increasingly important role in daily life and industry.

NANTONG WISDOM SCFE

The Company has committed to the field of supercritical fluid extraction equipment for 30 years.