The development of a new method to detect the adulteration of commercial aloe gel powders

Abstract

Simple and accurate methods to detect the adulteration of commercial aloe gel powder were developed. Crude polysaccharide in aloe gel powder was isolated by precipitating with excess ethyl alcohol and total hexose in isolated polysaccharide was determined by Dubois assay. After hydrolysis of non-dialysable polysaccharides, resultant free sugar was determined by gas chromatography for sugar recognition and ash contents was considered simultaneously. In some products, the content of ash was very low while the content of total hexose was very high. And polysaccharides of these products revealed typical dextran pattern, therefore, these products could be identified that adulterated with commercial maltodextrin. The content of maltodextrin in adulterated product was determined by HPLC and TLC analysis which could be adopted as a part of a certification process.

Final Report on the Safety Assessment of Aloe Andongensis Extract, Aloe Andongensis Leaf Juice, Aloe Arborescens Leaf Extract, Aloe Arborescens Leaf Juice, Aloe Arborescens Leaf Protoplasts, Aloe Barbadensis Flower Extract, Aloe Barbadensis Leaf, Aloe Barbadensis Leaf Extract, Aloe Barbadensis Leaf Juice, Aloe Barbadensis Leaf Polysaccharides, Aloe Barbadensis Leaf Water, Aloe Ferox Leaf Extract, Aloe Ferox Leaf Juice, and Aloe Ferox Leaf Juice Extract1

“…The values in Tables 6 and 7 may be compared with the IASC (1998) stated limit of 50 ppm (equivalent to μg/ml and μg/g in the tables). Kim et al (1998) developed simple and accurate methods to detect adulteration of commercial Aloe gel products by other plant polysaccharides. Isolation of crude polysaccharides from…”

Compositional Features and Bioactive Properties of Aloe vera Leaf (Fillet, Mucilage, and Rind) and Flower

“…However, in the second case, a subsequent filtration/purification step is required to remove unwanted constituents, especially those from latex [10,11]. The gel has been marketed fresh or in powdered concentrate and included in different formulations for food, health, medicinal, and cosmetic purposes [9,10,12].…”

Rapid quantification of aloin A and B in aloe plants and aloe‐containing beverages, and pharmaceutical preparations by microchip capillary electrophoresis with laser induced fluorescence detection

“…Therefore, it is important to establish reliable quality control standards for these plants as well as their derivative products. Some authenticities of aloe products have been established based on small molecule compounds present in aloe products such as l ‐malic acid and anthraquinones , while aloin has been considered to be the most important quality control indicator . Aloin is believed to be responsible for a variety of bioactivities of aloe plants.…”