ingredient information
Polyvinylpyrrolidone (PVP) is a water-soluble polymer made from the monomer N-vinylpyrrolidone, The monomer is extremely toxic to aquatic life. However, the polymer PVP was used as a blood plasma expander for trauma victims after the first half of the 20th century.[clarification needed] It is used as a binder in many pharmaceutical tablets; it simply passes through the body when taken orally. However, autopsies have found that crospovidone does contribute to pulmonary vascular injury in substance abusers who have injected pharmaceutical tablets intended for oral consumption.[1] The long-term effects of crospovidone within the lung are unknown. PVP added to Iodine forms a complex called (Povidone-iodine[2]) that possesses disinfectant properties. This complex is used in various products like solutions, ointment, pessaries, liquid soaps and surgical scrubs. It is known for instance under the trade name Betadine. PVP binds to polar molecules exceptionally well, owing to its polarity. This has led to its application in coatings for photo-quality ink-jet papers and transparencies, as well as in inks for inkjet printers. PVP is also used in personal care products, such as shampoos and toothpastes, in paints, and adhesives that must be moistened, such as old-style postage stamps and envelopes. It has also been used in contact lens solutions and in steel-quenching solutions. PVP is the basis of the early formulas for hair sprays and hair gels, and still continues to be a component of some. As a food additive, PVP is a stabilizer and has E number E1201. PVPP is E1202. It is also used in the wine industry as a fining agent for white wine. Other references state that as polyvinyl pyrrolidone and its derivatives are fully from mineral synthetic[3] origin. Therefore, its use in the production should not be a problem for vegans. In molecular biology, PVP can be used as a blocking agent during Southern blot analysis as a component of Denhardt's buffer. It is also exceptionally good at adsorbing polyphenols during DNA purification. Polyphenols are common in many plant tissues and can deactivate proteins if not removed and therefore inhibit many downstream reactions like PCR. PVP is also used in many technical applications: as adhesive in glue stick and hot melts as special additive for batteries, ceramics, fiberglass, inks, inkjet paper and in the chemical-mechanical planarization process as emulsifier and disintegrant for solution polymerization as photoresist for cathode ray tubes (CRT) use in aqueous metal quenching for production of membranes, such as dialysis and water purification filters as binder and complexation agent in agro applications such as crop protection, seed treatment and coating as a thickening agent in tooth whitening gels[4] as an aid for increasing the solubility of drugs in liquid and semi-liquid dosage forms (syrups, soft gelatine capsules) and as an inhibitor of recrystallisation as an additive to Doro's RNA extraction buffer