What is the best way to extract phenols from plants ?What is the best way to extract phenols from plants without any loss
Dear Amera
As you know, many phytochemicals are having a phenol entity such as flavonoids, coumarins, and others. According to my experience, I thought that the use of ultrasound-assisted extraction is the best way to minimize the loss of yield. Below, there are some papers which may help you.
All the best
Dear Prof-Dr- Amera Al-Rubeii, there are virtually thousands of references on the research topic "extraction of phenols from plants" in the literature. Attached please find a recent review article on this topic. You should also check out papers that are available on RG. Good luck!
Dear all, I personaly prefere Soxhlet extraction, we have some experience with the extraction of eugenol from cloves. The question of without loss I think it is not practically feasuble since it is unavoidable. My Regards
Dear Prof-Dr- Amera Al-Rubeii, I fully agree with Abdelkader BOUAZIZ in that Soxhlet extraction is the method of choice to minimize loss. The method is also very convenient.
Hi;
It is also important to know that the efficiency of chemical extraction depends on the type of solvents with varying polarities, extraction time and temperature, sample-to-solvent ratio as well as on the chemical composition and physical characteristics of the samples. In addition, A number of methods have been developed in recent years such as microwave, ultrasound-assisted extractions (UAE), and techniques based on use of compressed fluids, such as subcritical water extraction (SWE), supercritical fluid extraction (SFE) and pressurized fluid extraction (PFE) were also applied in the extraction of phenolic compounds from plant materials. However, according to several studies UAE technique not only provides a much greater yield than the other techniques, but also causes less degradation of phenolic compounds.
With my best regards
Dear Prof-Dr- Amera Al-Rubeii, please find attached another interesting article about extraction of phenols from plants. The paper is available Open Access.
Dear Amera
As you know, many phytochemicals are having a phenol entity such as flavonoids, coumarins, and others. According to my experience, I thought that the use of ultrasound-assisted extraction is the best way to minimize the loss of yield. Below, there are some papers which may help you.
All the best
Dear Prof-Dr- Amera Al-Rubeii, I fully agree with Yasser Fakri Mustafa in that microwave-assisted extraction will give superior results. Moreover, as described in his papers, it is easily carried out using a commercial household microwave oven.
Dear Dr. Amara,
Phenol is a complex and large family of metabolites that includes different subfamilies as flavonoids, coumarins, alkaloids, xanthones, and so one. All these can be either non polar, semi polar and/or polar.
Depending on the structures, composition, polarity, the choice of the solvent and extraction method can be easely define.
Soxhlet extraction is a good, efficient and non costly solution.
Soxhlet extraction is convenient. It is also important to know that the extraction solvent plays a bigger role due to polarity. Try aqueous methanolic or ethanolic solvents. There are papers reporting acetone as the best solvent to extract a wide range of phenolic compounds.
There are different factors which contribute to the effective recovery of phenols from plants. Factors such as extraction methods, solvent types and choice of extraction parameter...All have their significant role in phenol extraction...
Secondary metabolites in general can be extracted more with the 1:1 combination of MeOH and DCM. This more indicated for large plant material and the extraction takes place without and external energy or pressure.
For little amount of plant material, soxhlet can be used with méthanol as solvent
3 methods of extraction of phenolic compounds use LLE method including Soxhlit extraction & laceration & hydro distillation
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