It is obvious that the concentration in dry weight and the concentration in the extract are very different. A compound's dry weight concentration is calculated after removing moisture from a material (evaporating it) and calculating the remaining moisture as 0%; it is expressed as a percentage (w/w). However, the solvent used in the extract greatly influences the concentration of the compound in the extract. By extracting the compound with the appropriate solvent, the target compound is more concentrated. Consequently, the concentration of the extract will produce a higher value than that of the dry weight concentration.
The dry weight of the plant is determined based on the certain amounts of live/wet plant biomass and is variable (the physical, chemical and biomechanical processes are carried out in its content). The dry extract of the plant will undergo a physical phase change after the initial extraction based on a series of special post-processing in accordance with the relevant protocols.
Concentration is about the active molecule/ingredient in dried weight of the source/ material which can be calculated in mg/g or micro gram/ g of the the material while, in whole plant extract means, ingredient in dried whole plant extract.