The flavonoid phlorhizin is abundant in the leaves of Sweet Tea (ST, Lithocarpus Polystachyus Rehd). Phlorhizin was preparatively separated and purified from a crude ST extract containing 40% total flavonoids by static adsorption and dynamic desorption on ADS-7 macroporous resin and neutral alumina column chromatography. Only water and ethanol were used as solvents and eluants throughout the wh...

Total anthocyanins in different cultivars of mulberry were measured and a process for the industrial preparation of mulberry anthocyanins as a natural food colorant was studied. In 31 cultivars of mulberry, the total anthocyanins, calculated as cyanidin 3-glucoside, ranged from $147.68$ to $2725.46$ mg/L juice. Extracting and purifying with macroporous resins was found to be an efficient potent...

relationship to the filler may be the solution to polymerization shrinkage and clinical challenges (i.e., shrinkage stress) that are associated with these methacrylate-based composite resin systems. Two recently developed composite-resin systems have replaced the weak linkthe matrix. A comparison of the new matrix chemistries of both systems can provide the attributes and capabilities for their...

fiber post (GFP) treated or not with phosphoric acid, silane coupling agent, and unfilled resin. GFPs were etched or not with 37% phosphoric acid and different surface coating applied: silane coupling agent, unfilled resin, or both. Composite resin blocks were built around a 4-mm height on the GFP. Unfilled resin (20 s) and composite resin (40 s) were light activated by a light-emitting diode u...

This paper describes a method for the removal of acid-soluble lignin from acid-hydrolyzed hemicelluloses extracted from a mixture of northern US hardwood chips, by using Amberlite XAD-4 resin, which was shown to remove 100% of furan derivatives and 90% of acid-soluble lignin. Subsequent fermentation of the resin-treated hydrolyzates gave ethanol yields as high as 97% of theoretical and showed a...

This paper describes our development of a rapid on-line column/ID-ICP-MS technique for the analysis of plutonium (Pu) in environmental samples using an UTEVA extraction chromatograph resin (UTEVA resin) column. It took only 40 min to separate and measure Pu in the sample solution, including the time for conditioning the resin column for the next analysis. In our method, Pu in a 3 M nitric acid ...

avail k|GSlnS *!ia^ rernain free to ionize and be '?esin>a f0r ionic exchange. The use of such tal sf m c^n*ca* work is still in the experimental T)?Ck ^I946) was the first to suggest p.txthange resins might be used for the e]pSf.?i dGCreasin^ ^le extent of absorption treat() 1()^es' Particularly sodium ions. This er* Mould represent a valuable addition to the armamentarium of the physician for...

High-dose methotrexate is included in chemotherapy regimens used to treat a number of malignant neoplasms. Methotrexate plasma concentration is considered the best toxicity predictor. Monitoring methotrexate plasma concentrations is standard practice in the identification of at-risk patients, the titration of folinic acid doses, and the establishment of corrective measures. Methotrexate is a ki...