Original title: What are the traditional extraction methods of biological components? How can subcritical extraction technology be applied? After billions of years of evolution, the species of organisms on the earth are very rich, only considering the species of terrestrial plants, animals and microorganisms, each organism contains thousands of organic compounds, taking plants as an example, the roots, leaves, flowers, fruits and pollen of plants contain a large number of organic compounds. They are important components in the process of plant growth, and are also the results of plant evolution for millions of years. Many of these compounds have been understood by human beings, and their functional effects on human health have been recognized, and large-scale products have been produced for human survival and health. For a wide variety of biological raw materials, many biological extraction methods have been invented,cbd crystallization equipment, such as pressing, extraction, distillation, adsorption, cold absorption,thin film distillation, melting, supercritical extraction, etc. Mechanical pressing is widely used in traditional vegetable oil extraction. In recent decades, the continuous screw press has also been greatly developed, and the daily output of a single screw press can reach 300 tons. Distillation and cold absorption methods are widely used in the extraction of plant essential oils, while melting method is widely used in the extraction of animal oils. With the development of organic solvents, bio-extraction technology has been developed rapidly and applied widely. Compared with other extraction methods, solvent extraction technology has the advantages of high extraction efficiency, large production scale, low production cost and high degree of automation. For example, decarboxylation after extraction ,wiped film evaporator, the application of modern extraction method (also known as leaching method) has made great progress in the vegetable oil industry. In the production of soybean extraction oil, a single production line can extract 6000 tons of raw materials per day, which greatly improves the production efficiency. At present, the conventional solvents used in industrial extraction include alcohol solvents, alkane solvents, ether aldehyde solvents, halogenated hydrocarbon solvents, ketone solvents, ester solvents, halogenated hydrocarbons, inorganic solvents and so on. The commonly used alcohol solvents are methanol, ethanol and isopropanol; the commonly used alkane solvents are pentane , hexane, petroleum ether, No.6 solvent, aromatic hydrocarbon, etc. The commonly used ether solvent is ether , butyl ether, furfural, etc. The commonly used ketone solvent is acetone Butanone, etc.; the common ester solvent is ethyl acetate , ethyl formate, etc. Chloroform is a commonly used halogenated hydrocarbon solvent Carbon tetrachloride, etc. Water is a widely used inorganic solvent, from making tea in daily life to decocting traditional Chinese medicine, all of them use water as extraction solvent. Subcritical fluid bio-extraction technology, also known as subcritical fluid extraction technology or DDG extraction technology, is an industrial production extraction process developed rapidly in recent years. It has low extraction pressure, high extraction efficiency and low extraction and desolvation temperature. It has been widely used in industrial processing fields such as animal and vegetable oils, animal and vegetable proteins, plant essential oils, plant pigments and Chinese herbal medicines. The daily processing capacity of raw materials is up to 100 tons. Many universities and research institutes use the small principle machine of subcritical extraction to carry out scientific research and train postgraduates. They publish a large number of research articles every year, and the technological inventions and benefits of subcritical extraction emerge in endlessly. Return to Sohu to see more Responsible Editor: (function() { function getBrandHtml() { var brands = [],50l rotovap, html = ''; for(var i = 0; i < brands.length; i++) { var brand = brands[i]; if(brands.length i+1) { html+= ''+brand.name+''; } else { html+= ''+brand.name+'、'; } } return html; }; if(document.getElementById('linkBtn')){ document.getElementById('linkBtn').onclick = function() { $('#brands').removeClass('brand');$ ( '# tipInfo').text ( 'Real name responded'); $ ('#linkBtn').remove();$ ('.real-response .content').css('line-height', '20px');$ ('.real-response .time').css('line-height', '20px'); }; document.getElementById('brands').innerHTML = getBrandHtml(); }; })();。 toptiontech.com