You are talking about Portulaca oleracea-Portulaca oleracea is a kind of wild vegetable that can be seen everywhere along Tiantou Road. It is drought-resistant and has strong vitality, and it will not die even if it is pulled up for a long time. Also known as Ma Amaranth, Five Elements Grass, Five Herbs Grass, Longevity Vegetable, Nine Lions Grass and Ma Cai Sheng. Leaves like horse teeth, slippery, hence the name purslane. Its stems are soft, flat on the ground, and its leaves are small and grow symmetrically. In June and July, small flowers will bloom, and small pointed fruits will bear purslane seeds. Portulaca oleracea has the effects of clearing away heat and toxic materials, stopping bleeding and treating stranguria.

1. Antibacterial effect:

The ethanol extract has a strong inhibitory effect on Escherichia coli, Proteus, Shigella dysenteriae, typhoid and paratyphoid bacilli, and also has a different degree of inhibitory effect on Staphylococcus aureus, fungi such as Micrococcus Oduensis and Mycobacterium tuberculosis. It has a slight inhibitory effect on Pseudomonas aeruginosa.

2. Effect on smooth muscle:

Portulaca oleracea preparation has obvious contraction effect on isolated rat ileum, which is similar to the effect of prostaglandin E and neostigmine on stimulating intestinal smooth muscle.

3. Effect on uterus:

Experts have proved that potassium chloride may be an effective component of equisetum equisetum for contracting uterus. The study on uterine contractile components of Portulaca oleracea proved that Portulaca oleracea has two opposite effects on animal uterus, one is excitatory and the other is inhibitory.

4. Other functions:

Portulaca oleracea has obvious contraction effect on blood vessels. It can also promote the growth of epithelial cells and promote the healing of ulcers. The decoction has inhibitory effects on isolated frog heart and isolated guinea pig small intestine. Intravenous injection of 3 ml of 20% decoction in anesthetized dogs has no obvious effect on blood pressure. Water-soluble and fat-soluble extracts can prolong the life span of some alloxan diabetic rats and rabbits, but do not affect the blood sugar level, which may be due to the improvement of lipid metabolism in animals.