Organic compounds high molecular weight, isolation from

When appreciable amounts of pectin, proteins, lipids, unwanted polyphenols, or other compounds are suspected to be present in anthocyanin-containing extracts, some of them can be precipitated or the anthocyanins may be crystalhzed and separated from the others. Pectin and proteins can be removed by organic solvents such as methanol and acetone in order to reduce their solubility, then precipitated and separated by centrifugation. Gelatin was used to remove proanthocyanidin due to its high molecular weight. Anthocyanins were reported to be precipitated early by lead acetate to achieve isolation from other materials. ... 

To aid in the characterization of the DOM pool, marine organic chemists have developed techniques fiar separating compounds into size fractions. Tangential flow ultrafiltration is used to isolate a high-molecular-weight (HMW) fraction from a low-molecular-weight (LMW) fraction. The size cutoff between these is approximately 1 tun, which equates... 

Comparison of High Molecular Weight Organic Compounds Isolated from Drinking Water in Five Cities... 

We used this immobilization approach in the development of a novel electrochemical DNA biosensor utilizing low molecular weight dsDNA isolated from salmon sperm as a biorecognition layer immobilized onto a GCE surface [41], Such a biosensor was used for the high-throughput detection of dsDNA damage caused by various organic xenobiotic compounds [41 3]. The whole... 

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