What is Soxhlet apparatus used for?
A soxhlet extractor is a laboratory apparatus for the extraction of lipids and other molecules from a solid sample.
What is Soxhlet method of extraction?
Soxhlet extraction is an exhaustive extraction technique widely applied to analytes that are sufficiently thermally stable. The extraction solvent is continuously cycled though the matrix, by boiling and condensation, with the sample being collected in the hot solvent.
What is the principle of Soxhlet apparatus?
A Soxhlet extractor is based upon the principle of a Pythagorean or ‘greedy’ cup – a cup used as a practical joke. Once filled past a certain point, the liquid inside starts to be drained out through a hole in the bottom.
What is the principle of crude fat extraction?
Crude fat content is determined by extracting the fat from the sample using a solvent, then determining the weight of the fat recovered. The sample is contained in a porous thimble that allows the solvent to Published 1998 Reprinted November 2006 Page 2 2 completely cover the sample.
What is the advantage of using Soxhlet in extraction?
The advantage of Soxhlet extraction is that it can be extracted multiple times. Compared with the general soaking method, it has the advantages of small solvent dosage, high efficiency and complete extraction.
How does Soxhlet method work?
In the laboratory, a fat extractor (Soxhlet extractor) is used for extraction. The fat extractor uses the solvent reflux and siphon principle to continuously extract the solid matter by pure solvent, which saves the solvent extraction efficiency and high efficiency.
What are the major factors which affects the efficiency of Soxhlet extraction?
Besides the type of solvent and its concentration, the solvent:solid ratio, number of extraction steps, pH, time of contact, temperature, and particle size of the solid matrix are also key factors in SLE processes because they affect both the kinetics of phenolics release from the solid structure and the antioxidant …
What are the advantages and disadvantages of Soxhlet extractor?
Soxhlet extraction is an accepted technique for extracting fat from meat samples. Though it is simple and robust, there are drawbacks to Soxhlet extraction, such as long drying and extraction times, lack of automation, and the amount of solvent used per sample.
How does the Soxhlet extractor extract crude fat?
The Soxhlet extraction method uses a Soxhlet extractor as an extraction apparatus, and is extracted by refluxing with a low-boiling organic solvent (ether or petroleum ether) to remove crude fat in the sample, and the crude fat content is calculated by the difference between the weight of the sample and the residue.
How is the Soxhlet Method used to determine fat content?
As well as being used to determine the fat content of meat and meat products, the Soxhlet method can be used to determine the fat content of meat meal. In the case of meat meal, the Soxhlet method is often the method of choice as a routine test.
When did the Soxhlet Method come into use?
The solvent extraction method is more pronouncedly known as Soxhlet method. It came into the scene in 1897. This method is widely used in almost all food industries and primarily used in oil extraction industries.
What kind of solvent is used for Soxhlet extraction?
Soxhlet extraction is performed with different solvent mixtures such as hexane/dichloromethane, dichloromethane/light petroleum, cyclohexane/acetone or hexane/acetone, or even methanol, depending on the nature of the sample and the pesticides covered in the analytical method. Soxhlet extraction is a simple and effective method.
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