Extraction mixing

Another RP-HPLC method has also been developed and applied for the determination of MG, LMG, gentian violet (GV) and leuco gentian violet (LCV) in catfish and trout tissues. The chemical structures of MG and LMG were previously presented. The chemical structure of VG and LVG are shown in Fig. 3.21. Dyes were extracted mixing 20.0 g of... 

To this end, the authors perform a second comet assay. Only limited results, however, are shared PM2 5 from only one city (Baton Rouge) was tested using only one cell line (K562 myeloid leukemia cells), thereby following a broad-to-narrow approach. The results are presented in excerpt 4E. As shown in Eigure 3 (excerpt 4E), cells were exposed to (A) a blank extract, (B) a PM2 5 extract, (C, D, E) a PM2 5 extract mixed with one of three different free radical scavengers, (E) a positive control, and (G, El) a PM2 5 extract mixed with one of two different metal-ion chelators. The free radical scavengers remove free radicals the... 

Add 1 ml dissolved enzyme solution into the vial containing dried extract. Mix well in an ultrasonic bath for 10 min. 

Besides genuine meat extracts, there are sold meat extracts mixed with vegetable extracts mixed extracts) or extracts formed from various ferments and vegetable extracts, or vegetable extracts alone. 

Much stronger extraction may be obtained through the dual-host concept, in which the binding of the cation and anion by separate receptors compensates their unfavorable partitioning. In addition to stronger extraction, mixing two receptors offers great flexibility in the choice of receptors and in the separate control of cation and anion selectivity. 

Method C Freeze-dried extract mixed with silica gel and heated, 10 min at 150 °C. n.d., not detected. 

Subsequent work was, therefore, directed to substitution of resorcinol, a much more expensive phenol, in cold-setting, waterproof adhesives (38). Formulations based on 30 to 60% of extract mixed with a resorcinol-formaldehyde condensate and additional formaldehyde met pot-life and assembly time requirements for timber lamination. Test bonds passed requirements of the major performance standards in the United States, but competition from lower cost, phenol-modified resorcinol resins and the lack of longterm commercial perfor-... 

Analyze extract mixing point. Write acetone, MIBK, and water balances solve to determine /Ua4, mM4, and mw4, respectively. 

In this collaborative study fourteen laboratories analyzed six different commodities containing aflatoxin B, at two concentration levels as blind duplicates. Two standards (15 and 50 ng B,/g) were provided, and collaborators were asked to report their results as <15 or >15 ppb. Laboratories with microtiter well readers were asked to determine aflatoxin concentrations both visually and spectrophotometrically. In this kit aflatoxin B,-antibodies are coated onto plastic microtiter wells. The aflatoxin-containing sample is extracted with Me0H-H,0 (55+45). The extract is defatted with hexane, and the MeOH extract mixed with the aflatoxin-enzyme conjugate and added to the well of the antibody-coated microtiter plate. The aflatoxin in the extract and the aflatoxin-enzyme complex compete for the antibody binding sites. The enzyme substrate(ABTS) and HjOj solution are then added, the reaction leading to a colored product in the presence of enzyme. The intensity of color is determined visually or spectrophotometrically at 580nm. 

The application of SCF to the extraction of vitamins has been widely reported. Thus, retinyl palmitate and tocopherol acetate have been extracted from a hydrophobic ointment with supercritical CO2 at 40°C and 196 bar for 4 min, the extract analysis being performed by SFC (137). The calibration graphs were linear from 0.5 to 2.5 pg and the recoveries were quantitative. On the other hand, water-soluble vitamins can be extracted mixing them with low substituted hydroxypropil cellulose. Portions were placed in a column to which a reversed micellar extractant was delivered (138). Extraction of vitamins A and E and their esters from tablet preparations prior to FIPLC was performed in the dynamic mode with CO2 at 40°C and 253 bar for 15 min (139). Calibration graphs were linear from 0.02 to 0.8 and from 0.005 to 0.2 mg/mL of vitamins E and A, respectively. The corresponding RSDs (six... 

Additional matrix formulations have been developed for crossflow extractors in which accidental racir-dilation uccars because the sumpa have been incorrectly posirionnd. When the sumps are placed too far forward and tha extract mixes completely on the top of the bed in each stage the matrix is exactly the same as for the recirculation case listed in Table 10.12-2. 

The application of SIR in metal recovery processes can present difficulties in handling solids in terms of continuous operation, process control, number of required units, etc. Therefore, this type of metal extraction should be combined with fluidized bed technology. It is then possible to carry out the required operations, such as solvent-extractant mixing, metal extraction, and metal stripping, in a single unit. Furthermore, it allows continuous work and good control of the system. The combination of SIR and fluidization... 

Characteristic features of craitroUed laminar flow in tnicrofluidics devices have been utilized in many applications such as diffusion-based separation and detection, solvent extraction, mixing, and hydrodynamic focusing [255, 256]. 

Non-halogenated solvent extraction Mixed microbial cultures DMC or combination with NaClO Recovery 82% 137]... 

Methodological and experimental approaches, along with original results provided below for the model of the fast chemical reaction of liquid-phase electrophilic (cationic) isobutylene polymerisation are general and applicable to other fast liquid-phase processes. They turned out to be fruitful for the description of various chemical processes as well as nonpolymerisation reactions, especially of those with mass exchange (extraction, mixing, dispersion, and so on) as an important factor [27-32],... 

After the incubation with extracts, mix the sperm nuclei gently by pipeting with a clipped yellow tip. Then transfer 5pL of the reaction into 150 tL of SDB that has equilibrated at room temperature. 

Keywords Base Metals, Laterite, Leaching, Solvent Extraction, Mixed Chloride... 

This was the first reported instance of an extracted mixed complex containing inorganic aliion and extractant anions. From Fig. 5/ the substitution of NO3 for CIO4 in the aqueous phase is seen to depress the K for thorium(IV) in the HDOOP system but enhance it in the HDEHP system. These changes indicate inhibition by aqueous phase complexing in the first instance and enhancement through formation of a mixed complex in the second. 

Cottonseed flour Flour made from ground cottonseed from which the oil has been extracted. Mixed with cereal flouts that axe used to prepare baked products Richer in prolein, calcium, phosphorus, iron and B vilamins than most cereal Hours. Abrrut 7% cottonseed Rout may be used in a mixture with wheal flour. 

Decanters arc used to separate two immiscible solvents following extraction, mixing, or condensation from the vapor phase. Like extrac-... 

Food. The major use of tea domestically is as a beverage usually in the form of tea bags (pure ground tea) or as instant teas (tea extracts mixed with other ingredients). The tea used is mostly black tea. 

Mix about 10 g with 50 ml of 70 per cent ethanol, warm on a water-bath, and allow to stand for half an hour, shaking frequently. Transfer to a percolator and percolate slowly with warm 70 per cent ethanol until the alkaloids are completely extracted. Reduce the volume of the percolate to about 15 ml by evaporation at as low a temperature as possible, transfer to a separator with 40 ml of chloroform and a mixture of 15 ml of water and 5 ml of dilute ammonia solution, shake well, allow the layers to separate and run the lower layer into a second separator. Continue the extraction with further quantities of chloroform until the alkaloids are completely extracted, combining the extracts in the second separator. Extract the contents of the second separator, first with 25 ml of 0-2N sulphuric acid and then with successive quantities of 0 1 N sulphuric acid until the alkaloids are completely extracted. Mix the acid liquids and wash with 10 ml, 5 ml and 5 ml of chloroform, washing... 

Besides imidazolium and ammonium ILs, also phosphonium ionic liquids are considered to be prospective for substance separation (Bradaric et al., 2003b), and have been proposed as solvents for crown ether extractants mixed with organic solvents and as carriers in impregnated resins (Campos et al., 2008a, 2008b Gallardo et al., 2008 Guibal et al., 2008). 

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