This protocol was described as an efficient method for removing polyphenols, polysaccharides,
and RNA. It utilizes SDS as a detergent, PVP for binding the phenolic compounds, proteinase
K for removing proteins, potassium acetate and isopropanol for precipitation, a high-molar
concentration of sodium chloride for inhibiting coprecipitation of polysaccharides and DNA,
and an improved method for removing RNA by selective precipitation with lithium chloride.