Generally speaking, the ratio extracts and plant extracts mainly refer to the detection of the active ingredients (main components) of the plant in international standards. For example, Pueraria lobata is based on puerarin, and the standard content of medicinal materials is generally 2.5 to 3.5% ( Because the location varies, so the concentration ratio is based on the puerarin content, such as 30% puerarin is about 9 to 10 times the original medicinal material, and the ratio of extract; or puerarin for example, such as puerarin ratio of 5:1 The concentrated preparation is to use the original medicine 100kg concentrate to become 20kg, which is called concentration 5 times;
In general, the loss of plant components during concentration processing, such as changes in pigments, sugar conversion, etc., is easy to change its color, and of course the taste is also changed by the loss of volatile oil and fat-soluble components. Therefore, it is reasonable to judge the standard of the concentrated component by using the detection of the main component, and the color and the fragrance can be confused by the artificial synthetic substance (pigment, sweetener).
However, the main test for proportional extracts is TLC. This method is used to identify the authenticity of the medicinal materials. The commonly used control for TLC is the reference medicinal material (produced by the Chinese laboratory) for distinguishing whether the product is derived from a certain medicinal material (plant). Commonly used for proportional extracts, to examine its source traceability. However, there is a lack of standards for specific levels of detection indicators.