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What is soxhalation?
Soxhalation refers to the use of a soxhlet extractor. A soxhlet extractor is a piece of laboratory apparatus designed for the extraction of a lipid from a solid material.
List 10 common laboratory apparatus and their uses?
There are many laboratory apparatus you can find. Examples are graduated cylinder clay triangle beaker crucible mortar and pestle evaporating dish test tube test tube rack wire gauze tong funnel Hope this will help you in your projects. Good luck! I am Xanthia motos living in philippines. Thank you!!!
What is the basic difference between cleavanger apparatus and soxhlet apparatus used in extraction process?
Clevanger apparatus usually use to determine essential volatile oil from flowers, leaves while soxhlet apparatus use for the extraction of a lipid from a solid material like plant seeds. Phuong.
Why hexane is used as solvent in soxhlate apparatus?
Hexane is used because it is relatively unreactive. Actually, any solvent that is unreactive can be used. However, the general criteria to be employed in choosing a solvent are 1) its solubility/polarity to the mixture/solute, 2) its boiling point is lower than the solute/analyte and 3) it is unreactive.
What are the most important types of extraction process in pharmacognosy?
The most important types of extraction processes in pharmacognosy are maceration, percolation, Soxhlet extraction, and steam distillation. Maceration involves soaking the plant material in a solvent to extract the desired compounds. Percolation uses gravity to move the solvent through a column of plant material. Soxhlet extraction continuously cycles the solvent through the plant material. Steam distillation utilizes steam to extract essential oils from plant material.
What is soxhalation?
Soxhalation refers to the use of a soxhlet extractor. A soxhlet extractor is a piece of laboratory apparatus designed for the extraction of a lipid from a solid material.
When was Franz von Soxhlet born?
Franz von Soxhlet was born in 1848.
When did Franz von Soxhlet die?
Franz von Soxhlet died in 1926.
What are Methods to calculate fat percentage in food?
Soxhlet extraction is the usual method; this doesn't require you to "calculate" anything, except to the extent that "(weight of fat/weight of original sample) * 100" is a calculation.
Which temperature for methanol to use in soxhlet extractor?
It's not entirely clear what you're asking about, as different portions of the apparatus will be at different temperatures, but at normal atmospheric pressure methanol boils at a bit under 65 degrees Celcius.
What are the different apparatuses use in the laboratory?
Examples: spectrophotometer, refractometer, filtration installation, distillation installation, oven, muffle furnace, balance, Soxhlet apparatus, burette, water bath,water vapour extraction installation, etc.
What is successive extraction?
Successive extraction of any plant part involves sequential extraction ( e.g. employing soxhlet apparatus or maceration) using solvents with increasing polarity. Following each extraction, the marc (refuse matter that remains after extract has been filtered) will be dried before being extracted using solvent with higher polarity. For example, the following solvents can be used in successive order (lower to higher polarity): petroleum ether then chloroform then ethyl acetate, then methanol.
What is the meaning for soxhalation?
Soxhalation is the use of a soxhlet extractor. A soxhlet extractor is a piece of laboratory apparatus designed for the extraction of a lipid from a solid material, or for other cases in which the desired compound has a limited solubility in a solvent and cannot be efficiently extracted by normal filtration.
How is fat content determined by soxhlet method?
The Soxhlet method for determining crude fat content is a lengthy process requiring up to a day for a single analysis. The solvent extraction step alone takes six hours. The method is therefore not favoured for routine testing purposes in the meat industry, rather it is used as a standard reference method. 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. 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 completely cover the sample. The thimble is contained in an extraction apparatus that enables the solvent to be recycled over and over again. This extends the contact time between the solvent and the sample and allows it time to dissolve all of the fat contained in the sample. In order for the solvent to thoroughly penetrate the sample it is necessary for the sample to be as finely comminuted as possible. Before the solvent extraction step can begin the sample must be dried. Often a moisture analysis is required as well as a fat analysis and this can be achieved by accurately weighting the sample after drying and before extraction, as well as before drying. If a moisture analysis is not required the sample need only be weighed before drying and again after solvent extraction. In either case the sample must be weighed accurately on an analytical balance at each stage of the analysis. When the sample is being weighed it is important not loose any part of it including any moisture that may weep from the sample during weighting. Loss of this moisture can be avoided by weighing the sample directly into a pre-dried extraction thimble or alternatively on to a pre-dried filter paper. If a moisture analysis is required, the dried extraction thimble or filter paper also has to be pre-weighed. After weighing, the sample (in the thimble or filter paper) can be placed in the oven for drying. After drying, the sample can be placed directly into the distillation apparatus for extraction.
