Medicinal seeds

Radix isatidis seed has the lifespan of 2 years. If the seed is not germinated for more than 2 years, even if there is a small amount of germination, it will die shortly afterwards. Therefore, new seeds should be purchased as much as possible. The newly-produced Banlangen seed (also known as Daqing seed) has a bluish-black appearance with good luster, bright, clear fragrance, and peeling of the skin by hand. The color of the inner kernels is greener. The Chen Seed has a grayish-black appearance and has lost its luster. The hair is black, and the fragrance is very light. Some have a damp smell. The skin is peeled off and the inner kernels are yellow-white or red.

Astragalus membranaceus seeds are generally relatively difficult to distinguish new seeds. If the new seeds are stored for a longer time, the seed color will be lighter, the storage time will be shorter, and the seed color will be dark black. However, some of the seeds will be stained to act as new seeds. Therefore, it is not enough to rely on the eye, and you need to knead it by hand. , and then see if the palm of your hand is black, dyed to prove to be Chen seeds. In addition, the seeds of Astragalus membranaceus can be soaked in warm water in a cup for a day. After that, the skin is removed and the skin is removed with a finger to see if the inner kernels are white, there are no bud embryos, and the kernels are yellow.

The seeds of Atractylodes macrocephala are generally glossy. The seeds have many hairs and are not easy to fall off. The Chen seeds have less hair and are easy to fall off and dull. The seed is split and the cross section is red, and the white hair is a new seed.

It is easier to identify the dry seed and shoot dry seed. From the appearance point of view, it is known that the seed is fresh, the new seed oil is bright and black, and the Chen seed has a wrinkled, unlustrous skin.

The new seeds of Campanulaceae seed are glossy, and they are hand-grip and have a creamy feel, while the Chen seeds are neither glossy nor greasy. The real pure new seeds are black and shiny, but there are also traffickers who oil Chen seeds. Such seeds are better than no seeds for “living” and can be real. If there are no new seeds for comparison, they can only be sampled and placed in water to see if there is oil floating on the surface of the water; if there is no oil, it is proved to be a new seed.

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