Aloin contains a glucose molecule attached to the parent anthracane ring. If the glucose is cleaved off, the resulting product is Aloe-emodin, which has, depending on its concentration, a red through brown through black coloration, which is in cosmetic products. Thus, the presence of aloin or its derivatives is undesirable both for internal consumption and topical usage. Only recently have processing methods using the entire whole leaf been perfected so the undesirable elements can be selectively removed, while maximizing the desired constituents. The major undesirable constituents, the polyhydroxyanthraquinones, can be selectively removed through filtration through charcoal and other absorbents so the remaining level of aloin is 1 ppm or less.
Increases cost effectiveness of processing.
Increased total solids concentration. Increased polysaccharide concentrations. Virtual absence of undesirable anthraquinones. Improved desirable characteristics for cosmetic usage. Increased concentration in permeability factors increasing transdermal penetration.