1、
This product is the dried and mature seed of Litchi chinensis sonn., a plant of Sapindus family. The ripe fruits were picked in summer, the peel and fleshy pseudoseed coat were removed, washed and dried in the sun
[properties] the product is oblong or ovoid, slightly flat, 1.5 ~ 2.2cm long, 1 ~ 1.5cm in diameter. The surface is brownish red or purplish brown, smooth, shiny, slightly concave and fine wavy, with a quasi round yellowish brown navel at one end, about 7mm in diameter. It is hard. Cotyledons 2, brown yellow. It is slightly sweet, bitter and astringent.
[identification] the powder of this product is brownish yellow. The cells in the mosaic layer are yellowish brown and in long strips. They are grouped by several cells in an irregular direction. . Stone cells are scattered in groups or singly, which are quasi circular, quasi square, quasi polygonal, rectangular or oblong, with many protrusions or branches. Cotyledon cells were oval or oval polygonal, filled with starch granules, and brown oil cells could be seen.
Decoction pieces
[processing] the litchi seeds are mashed when used.
[identification] the same as medicinal materials.
Remove the salt litchi stone, mash it, and fry it according to the salt water roasting method (general rule 0213).
. Return to liver and kidney channels.
[functions and indications] it can promote qi circulation, dispel cold and relieve pain. For cold hernia, abdominal pain, testicular swelling and pain.
[usage and dosage] 5 ～ 10g.
[storage] store in a dry place to prevent moths.

2、 Chemical constituents of Litchi Seed

The seeds contained saponin (1.12%), tannin (3.43%) and a-methylene cyclopropylglycine. And a trace of volatile oil was isolated, which contained 3-hydroxybutanone, 2,3-butanediol, corene, CIS syringene, allomyrcene, humulene, δ - picturene, a-curcumene, acorn, canthaacol, guaiaculene, flavanol, andpalmitic acidEt al.

3、

Subcutaneous injection (60-400mg/kg) of this substance to mice starved for 22 hours can reduce blood glucose and liver glycogen content significantly. Hypoglycemic: 1.3 and 2.6mg/kg of litchi seed dry extract were given to alloxan diabetic rats by gavage, and blood glucose was measured every 10 days for 30 consecutive days, which showed that the blood glucose of the containing group was lower than that of the control group. Subcutaneous injection of 230-400mg/kg of - methycyclopropylglycine into mice can reduce blood glucose from 71-103mg/100ml to 35-57mg/100ml. . It can also resist the mutagenic effect of Salmonella typhimurium.