Comfrey Price
In the Chinese medicinal material market, comfrey has always occupied an important position, but its price differences often confuse consumers. As a typical representative of medicinal and edible ingredients, the quality of comfrey directly affects its medicinal value and edible effects. We will delve into the root causes of price differences from three dimensions and impart practical identification skills.
Analysis of Factors Influencing Comfrey Price
Variety Differences and Regional Characteristics
Although南沙参 (South Comfrey) and 北沙参 (North Comfrey) both belong to the same genus, their growth environments create significant differences. The former is mainly produced in the Yangtze River Valley, with thick and fibrous roots and high sugar content; the latter is commonly found in sandy soils in the north, with more prominent saponin components. This biological characteristic results in South Comfrey prices typically being about 40% higher than North Comfrey, with high-quality products reaching up to 70 yuan per kilogram.
Comparison of Harvesting and Processing Techniques
The price difference between traditionally hand-peeled and mechanically processed comfrey can reach 20 yuan/kg. Hand processing can completely preserve the powdery substances on the epidermis, which is an important indicator of the retention of effective components. Some producing areas use low-temperature drying technology, which increases costs by 15% compared to sun-drying methods but better preserves active substances.
Key Points for Quality Identification
Visual Identification System
High-quality comfrey skin should present a natural yellowish-white color, with a uniform distribution of diameters between 1-1.5 cm. The unique annular transverse lines on the surface must be clearly visible, and the cross-section should show a radial chrysanthemum pattern. If worm-eaten spots or signs of mildew are found, even if the price is low, it should be abandoned resolutely.
Tactile and Auditory Verification
Holding comfrey in your hand should produce a distinct刺手感 (prickling sensation), which is a normal feature of the epidermis. A hard-textured root should make a crisp sound when broken, and the powder should be finely crystalline. If the texture is soft or the cross-section is smooth, it may have been treated with sulfur fumes.
Consumers need to establish a multi-dimensional judgment system when purchasing, and price should not be the only consideration. By understanding origin characteristics, processing techniques, and identification methods, true quality and value can be achieved. It is recommended to prioritize products directly supplied from authentic producing areas and retain purchase receipts to protect rights and interests.