Garlic (Allium sativum L.) and garlic extracts have therapeutical properties that stem from their sulfur-containing compounds, mainly allicin. The main objective of this work was to compare conventional and "premium" garlic extracts in terms of yield and quality, with the latter being obtained using supercritical carbon dioxide (SC-CO2) as the solvent. Yield ranged between 0.65 and 1.0% and increased with extraction pressure (150-400 bar) at a constant temperature of 50°C. Extraction temperature (35-60°C), on the other hand, had little effect at a constant pressure of 300 bar. Based on yield and quality considerations, the best extraction conditions using SC-CO2 were 35-50°C and 300-400 bar. A yield of 5.5% was obtained by conventional extraction using ethanol as the solvent, but ethanol appeared to be less selective for valuable components than SC-CO2. The use of fresh garlic resulted in extracts that more closely resembled commercial products, possibly because of thermal and oxidative degradation of valuable microconstituents during drying.
to precipitate protein.
They are used in liquid:liquid extractions, methanol especially. What extraction are you performing? plant extraction for antimicrobial activities and phytochemical ivestigation
no ethanol is not an element. Ethanol is an Organic compound.
how is ethanol controlled
No, ethanol is an alcohol.
how to make sodium citrate in 10% ethanol for DNA extraction
to precipitate protein.
The density of 70% ethanol allows RNA settlement or say sedimentation in the vial.
Isopropanol is more preferred than ethanol in DNA extraction, as isopropanol facilitates precipitation more better, as it possess very less i.e., 0.6 to 0.7 volumes of alcohol.
No, ethanol and water are miscible. For an extraction, you want two solvents that are immiscible (mutually insoluble). Standard choices for the organic phase are ethyl acetate or dichloromethane. For the aqueous phase, use water, aqueous acid or aqueous base, depending on the compound you are trying to isolate.
They are used in liquid:liquid extractions, methanol especially. What extraction are you performing? plant extraction for antimicrobial activities and phytochemical ivestigation
A VERY brief overview of the extraction process: Grind Ipomoea seeds. Soak grounds in nonpolar solution. Filter out (then throw out) bulk of liquid, evaporate remainder. Soak in polar solution (ethanol), throw out grounds, evaporate ethanol, and you have your product. Found this on a google search. There is a million ways listed, all involve alcohol, (ethanol).
It depends on the method of extraction. Extraction that involve the use of resins of ionic exchange or affinity should be able to eliminate other substances.
The purpose is to help the mixture of salt water and ethanol so the can find the DNA of strawberry bananna etc. Extrsctions
Super critical carbon dioxide is my favorite but one can use ethanol propane and enzymatic aqueous extractions as well as mechanical press extraction.
Alprazolam is soluble in ethanol.
The principle behind lactose extraction from milk is enzymatic hydrolysis. The enzyme lactase is added to milk, which breaks down lactose into its constituent sugars, glucose and galactose. The chemical reaction can be represented as: Lactose + Water → Glucose + Galactose