From leaves of Eucalyptus robusta

[ source ] from" Chinese pharmaceutical field guide"
Pinyin name ] [ Dà Yèā n Y è
English name [ ] Swamp Mahogany Leaf, Leaf of Swamp Mahogany
[ alias ] Eucalyptus
[ source ]
Medicine medium source: myrtle leaves of Eucalyptus robusta.
Latin botanical name: Eucalyptus robusta Smith. animal fossil
Harvest and storage: autumn harvest, use fresh or dried.
[ ] the original morphology of large trees, up to 20m. Bark peeling, deep brown, about 2cm thick, irregular oblique fissure; twigs angled. The young leaves opposite, leaf blade thickly leathery, ovate, ca.11cm as wide as the 7cm, has a shank, mature; leaves alternate, leaf blade thickly leathery, ovate-lanceolate, long 8-17cm, wide ranging from both sides,3-7cm, both sides have glandular punctate; petiole 1.5-2.5cm. Umbel stout,4-8 having a flower, total stalk compressed; pedicels short, thick and flat; bud length1.4-2cm, width 7-8mm, calyx tube hemispherical or obconical,7-9mm long,6-8mm wide; petals and sepals connate into a calyptra, calyptra ca. and calyx tube with a long, apex contraction into beak; stamens numerous, long 1-1.2cm, anthers oblong, longitudinal fissure; ovary and calyx tube connate. Capsule egg shaped pot, long 1-1.5cm, upper capsule slightly contracted, mouth slightly enlarged, fruit valve3-4, deep in the calyx tube. Florescence 4-9 month.
[ ] habitat distribution
Ecological environment: Cultivation in Southern China, southwest and other places, often for street trees.
Resource distribution: native to australia.
[ ] cultivation
Biological characteristics of the light tree species, likes the warm and humid climate, deep root sex, have certain resistance to wind. Lax to edaphic requirement, water moisture and salinity, well in acid yellow soil, red soil, red soil, yellow red soil mountain, as well as the neutral molybdenum purple soil and alluvial soils, in barren soil poor growth, easy to aging.
Cultivation techniques for seed reproduction. Selected10 years Hale plant as seed trees,8-10 month fruit valve micro crack under the stall in3-5d, exfoliated seed, generation with stem hidden in the interior, can be stored in 2-3. In the spring of2-3 months8-9 months, autumn sowing, sowing can be mixed sand, each with a capacity of 30-45kg1hm2. After sowing and covering soil to Di is uniformly thin, cover grass, watering, keep the seedbed moist, seedling of Qi, partial tear off the stamp, seedling height3-5cm, thinning, topdressing should be. The plant is short, stout, root system developed by this, high survival rate, should be applied by spraying of chlormequat and cutting method of cultivating strong seedlings of su. The cultivation of seedlings of1years, can the nursery transplanting. In spring or summer monsoon afforestation.
Field management after planting1-2 years, each should be cultivating2-3 times, be in conditional place should be applied with mature compost. After 3-4 years, may be appropriate to harvest branches, each time after harvest, combination of cultivation and fertilization.
[ character ] trait identification of young leaves ovate, thickly leathery, long 11cm, width of7cm, has a shank; mature leaves ovate-lanceolate, thickly leathery, inequilateral, long 8-17cm, wide 3-7cm, lateral veins and more significantly, to80open angle of gently inclined toward the edge. Both sides have glands. Ye Bingchang 1.5-2.5cm. Leaf stem after a dry green, shattered after the strong aroma, slightly bitter and acrid.
[ ] leaves isolated to the chemical composition of robustaol a ( robustaol A ) [1], ( robustaol B ) has two kinds of phenolic aldehyde [3], Ooba Ji A ( robustadial A ), Ooba Ji B ( robustadial B aldehyde ), Eucalyptus aldehyde (euglobal )Ⅰ A1,Ⅰ a2[2,4],5- hydroxy two methoxy two methyl flavonoids (5-hydroxy-4,7-dimethoxy-6,8-dimethylflavone ) namely Eucalyptus in (eucalyptin),4,5- sideroxylin, -7-dimechylflavone ) -3 β - hydroxy Wusu with -28- acid lactone [3 β-hydrox-yurs-11-ene-28-oic-13( lactone]28),3 βhas acyloxy -11- Wusu with -28- acid -13(28) - lactone [3β -acetoxyurs-11-ene-28-oic-13(28) -alctone], bear fruit alcohol ( Uvaol ),β- sitosterol (β -sitosterol ),2- methyl 5,7- two hydroxy chromone glycoside ( -7 β5,7dihydroxy-2-methylchromone-7 β-O-glucoside ), are thirty alkyl alcohol (1-TRIACONTANOL), thirty (1-triacontanoic acid ) [3] alkanoic acid. Between three and two phenyl phenol derivatives:1- ( Triacontanol ), thirty (1-triacontanoic acid ) [3] alkanoic acid. Between three and two phenyl phenol derivatives:1- (2,6- two -3,5- two methoxy phenyl methyl ketone ) -2- [1- (2,6- two - -3,5-dimethyl-4- methoxy phenyl methyl ketone ) -2- two [1- (2,6-dihydroxy-3,5-dimethyl-4-methoxyphenyl ) -2-methyl-1-propanone],1- (2,6- -3 hydroxyl. ) -2-methyl-1-buttanone][5]5-dimethyl-4-methoxyphenyl.
[ ] the pharmacological effect
1Buck: extract12mg/kg can make the blood pressure of rats to delivery before the half, for several hours, on guinea pig, rabbit, cat and dog also has antihypertensive effects, the hypotensive effect was due to the release of histamine induced; buck portions of purified, its molecular weight was 4000, according to the physicochemical characterization and oral invalid features, its effective component may be a kind of tannin.
2: antibacterial, antiviral antibacterial effect to dry the leaves made of gallic acid in vitro tests ( plate ), Staphylococcus aureus, Staphylococcus aureus, eight stack? - Streptococcus, Neisseria, Pseudomonas aeruginosa bacteria concentration was2.5mg/ml, the pneumococcus, Escherichia coli, Shigella, Salmonella typhi, Freund, vice Salmonella typhi A inhibitory concentration5mg/ml. Gallic acid and Eucalyptus Extract, in vitro on influenza virus has a certain inhibition. Decoction in vitro on Staphylococcus aureus, hemolytic streptococcus and dysentery, typhoid, Escherichia coli, Pseudomonas, Bacillus showed inhibition. Eucalyptus robusta phenol B in pipe butterfly test on Staphylococcus aureus and Bacillus subtilis inhibition, minimum inhibitory concentration was 63? G/ml. Varieties without identification of a variety of Eucalyptus Decoction on Staphylococcus aureus, Shigella bacteria also exhibited antibacterial effect. Can be used for skin disinfection or washing the wound.
3other effect of eucalyptus oil in the test tube, can kill Trichomonas vaginalis. The Leptospira, either in vitro or in vivo test, effect is not reliable.
[ ] toxicity toxicity: Decoction and alcohol soluble substance to clinical dosage ( adult day 0.265g/kg)10or 20 times to give the dog a gavage, no toxic reaction,50 times the dose when vomiting, lack of energy.
[ ] cut processing: removal of impurities. Cut to: to remove impurities, cut, dried.
[ ] taste spicy; bitter cold;
[ ] functions of dispelling wind and published; expectorant cough; detoxification; insecticidal antipruritic. The main cold heat clearance; pain; lung heat cough and asthma; diarrhea abdominal pain; malaria; rheumatoid arthritis; Filariasis; leptospirosis; sore throat; red eye; ocular; ear carbuncle erysipelas; ulcer; mastitis; measles; measles; eczema; scale; scald;
[ usage] oral Decoction: fresh goods,6-9g,15-30g. External: amount of washing, decoction; extraction distillation and liquid coating; at the end of the inquiry into ointment; or in the form of aerosol inhalation.
[ note ] not to take cold of spleen and stomach
[ ] the paper1" Chinese medicinal plants: treatment of suppurative wounds", healing of the ulcer. 2medicinal herbs of South of the Five Ridges":" wind dispelling and antipyretic, anti-corrosion itching. The 3" Chinese herbal medicine in Guangxi:" heat-clearing and detoxifying, insecticidal convergence. Diarrhea, dysentery, influenza, furuncle carbuncle boils and eczema. 4" Zhejiang folk medicinal herbs commonly used:" cough, stomachic, anthelmintic.
Excerpts from" Chinese Materia Medica" [ ]

http://chinese-herbal-medicines-directory.blogspot.com/