Ulva lactuca

Ulva lactuca

(bielu)

[synonyms] Mao ((Book of songs), Ping Feng (songs of Chu), Fu Kui (Biography of Mao's poems), Shui Kui (Book of songs by Lu Ji), Shui Qin (important skills of Qi people), Lu Kui (family precepts of Yan Family), Si Chun (materia Medica of Tang Dynasty), horseshoe grass, kupen grass (good prescription for experience), brocade (compendium), horse millet grass (Modern Practical Chinese Medicine).

[source] stems and leaves of Brasenia schreberi.

[plant morphology] Brasenia schreberi

Perennial herbs. The roots run across the mud. Stem thin, up to more than 1 meter, immersed in water. Leaves alternate; slender petioles, 25-40 cm long; leaves surface, ovate to elliptic, shield shaped, 5-12 cm long, entire, green above, purple below, radial veins, hairy upper veins, agar like mucilage on stems and leaves. Pedicel from leaf axil, pedicel about 10 cm long, pilose, out of water, flower diameter about 2.5 cm; sepals, petals each 3, similar shape, linear, 1 cm long; stamens 12-18, shorter than perianth; carpels 4-18, discrete, tubular, stigma flat development, with long straight hair. Fruit group with persistent calyx, leathery; fruit ovate, about 8 mm long, base narrow, top with persistent style, beak shaped. The flowering period is from June to August.

Raw water. It is distributed in Jiangsu, Zhejiang and other places.

[collection] from May to July.

[chemical composition] it contains a small amount of vitamin B12. The new leaves secrete more mucus, which is similar to agar. The polysaccharide can be dissolved by hot water or dilute alkali. It contains 5.9% L-arabinose, 10.9% L-fucose, 34.1% D-galactose, 17.3% D-glucuronic acid, 13.4% D-mannose, 11.4% L-rhamnose and 7% D-xylose. It also contains D-galacturonic acid, D-fructose and D-glucosamine. In addition, leucine, phenylalanine, methionine, proline, threonine, asparagine and histamine were also detected in Ulva.

[pharmacological action] in animal screening test, the mucilaginous part of Ulva lactuca has some anticancer effects, and it has weak inhibitory effect on the mitosis of undifferentiated cells of onion root.

(1) bielu: "sweet, cold, non-toxic. "

② "Suixiju diet spectrum": "sweet, cool. "

[Guijing] 1. In Bencao Zaixin, the two meridians of "entering liver and spleen". "

② Summary of materia medica: "enter the Taiyin and Yangming meridians. "

[function indications] heat clearing, diuresis, detumescence, detoxification. Treatment of dysentery, jaundice, carbuncle, sores.

① "Bielu": "the main thirst, heat Bi. "

② Tao Hongjing: "tonifying, Qi, miscellaneous snakehead fish soup, also by water. "

③ Tang materia medica: "it's very pleasant to eat for a long time. It's a clear soup with minnow. The main stomach qi is weak. If you don't eat it, it's most effective. It's also suitable for the elderly. "

④ Meng Shen: "when you make soup with crucian carp, you can stop vomiting with your breath. "Eat less to make up for the deficiency of large and small intestines. "

⑤ Rihuazi materia medica: "it can treat redness, thicken the intestines and stomach, calm the lower energizer, and detoxify all kinds of drugs. "

⑥ Yilin zuanyao: "eliminate vexation, relieve fever and eliminate phlegm. "

⑦ "Bencao Zaixin": "treat all kinds of poisons, clear all kinds of sores. "

[usage and dosage] oral administration: decoction or soup. External use: tamping.

[taboo] 1. Tao Hongjing: "slippery, you can't eat more?. "

② "Qianjin Shizhi": "multiple food moving hemorrhoids. "

③ "Materia medica notes:" often eat thin gas, make joints urgent, sleepy. "

④ Meng Shen: "although it's cold and tonic, hot food can also block up Qi, which is harmful to the stomach and teeth. Don't eat too much, it's bad. It's not suitable to eat with vinegar, which makes people flaccid. Long time food damages hair. "

⑤ Yilin zuanyao: "eat more abdominal cold pain. "

[selection] 1. To cure all carbuncle: use stem in spring and summer, and seed in winter and moon. Take it from the root side, mash it and apply it. You can also use vegetables. (Bao Sheng Yu Lu)

② Treat several kinds of sores: Pyrola officinalis, Salvia macrophylla and Lithospermum odoratum. Beat them to pieces. Soak them in a bowl of wine. Remove dross and take them gently. (good recipe for experience)

[discussion by famous experts] 1. In the book of Materia Medica Huiyan: "Brasenia schreberi is a medicine for cooling stomach and treating gangrene, and for cooling arthralgia. This grass is cold and smooth, and ginger vinegar as soup food, clear stomach fire, eliminate wine accumulation, stop summer heat into dysentery. However, it is not suitable to eat too much for a long time, for fear of air-conditioning, trapping the spleen and stomach, which can also harm people. "

② According to Ben Jing Feng Yuan, "the nature of Ulva is slippery. It often eats and sends out Qi. It makes the joints urgent. It suffers from hemorrhoids and leakage, beriberi and accumulation. It can't be eaten. It's cold and slippery and injures the body fluid. Qianjin prescription is used to treat heat diarrhea, vomiting and Qi leakage. Zexie Decoction and Maimendong decoction are used together, and the heat resistance of Qingwei Wan is selected. "