Wednesday, 18 January 2017

Callisia fragrans dược liệu kháng HepG2 (tế bào ung thư gan), HL60 (tế bào ung thư máu ), A549 (adenocarcinomic người phế nang biểu mô), NCI -H460 (ung thư phổi) PC3 (tế bào ung thư tuyến tiền liệt), Hela (tế bào ung thư cổ tử cung).

Callisia fragrans

 Callisia fragrans dược liệu kháng HepG2 (tế bào ung thư gan), HL60 (tế bào ung thư máu ), A549 (adenocarcinomic người phế nang biểu mô)NCI -H460 (ung thư phổi)  PC3 (tế bào ung thư tuyến tiền liệt), Hela (tế bào ung thư cổ tử cung).
From Wikipedia, the free encyclopedia
Basket plant
Callisia fragrans - Luoc vang.jpg
Scientific classification
Kingdom:Plantae
(unranked):Angiosperms
(unranked):Monocots
(unranked):Commelinids
Order:Commelinales
Family:Commelinaceae
Genus:Callisia
Species:C. fragrans
Binomial name
Callisia fragrans
(Lindl.) Woodson
Synonyms[1][2]
  • Spironema orthandrum Lindb.
  • Rectanthera fragrans (Lindl.) O. Deg.
  • Spironema fragrans Lindl.
Callisia fragrans, commonly known as the Basket plantChain plant or Inch plant, is a species of the Callisia genus, in the Commelinaceae family.[1]

Description[edit]

Close-up of inflorescence, showing the small, white, fragrant flowers
The fleshy stem of the herb grows to a height of 1 metre. 25-centimetre-long leaves become violet if exposed to strong sunlight. Blossoms are white and fragrant.[3][4]

Range and cultivation[edit]

The Basket plant is endemic to Mexico, and naturalized in the West Indies, scattered locations in the United States, and a few other places.[2][5] It has been cultivated in many countries as an indoor ornamental since the early 1900s.[6]However, it can be also found growing outdoors in warmer climates in moist, fertile soil. The herb likes partially shaded areas.

Medicinal properties[edit]

It has a rich folkloric reputation as an antiviral and antimicrobial plant. Especially in Eastern Europe, its leaves are used for treatment of various skin diseases, burns and joint disorders.[6] An ethanol leaf extract has been shown to effectively inhibit the infection of Vero cells by HSV-1HSV-2 and an ACV-resistant strain of the latter, in vitro. The ethanol leaf extract, as opposed an aquatic extract, was however ineffective against VZV.[6] Though the ethanol leaf extract had a lower selectivity index (toxicity vs. effectiveness) than ACV, it was able to inhibit the HSV-2 mutant, and may be less toxic than ACV. Direct interaction with the viruses and blocking of their access to the host cells seems to be involved.[6]

Bidens bipinnata dược liệu kháng HL60 (tế bào ung thư máu)

Bidens bipinnata

Bidens bipinnata dược liệu kháng HL60 (tế bào ung thư máu)
From Wikipedia, the free encyclopedia
Bidens bipinnata
Bidens bipinnata L. Spanish needles.tiff
1913 illustration[1]
Scientific classification
Kingdom:Plantae
(unranked):Angiosperms
(unranked):Eudicots
(unranked):Asterids
Order:Asterales
Family:Asteraceae
Subfamily:Asteroideae
Tribe:Heliantheae
Subtribe:Coreopsidinae
Genus:Bidens
Species:B. bipinnata
Binomial name
Bidens bipinnata
L. 1753
Synonyms[2]
  • Bidens cicutifolia Tausch
  • Bidens cicutaefolia Tausch
  • Bidens decomposita Wall. ex DC.
  • Bidens elongata Tausch
  • Bidens fervida Hort. ex Colla
  • Bidens myrrhidifolia Tausch
  • Bidens wallichii DC.
  • Kerneria bipinnata (L.) Gren. & Godr.
Bidens bipinnata is a common and widespread species of flowering plant in the daisy family. It is widely dispersed in many lands, so much so that it is difficult to ascertain with certainty its region of origin. It seems most likely, though, that it is native to Asia and North America, and naturalized elsewhere. It is most commonly called by the common name Spanish needles.[3][4][5][6][7][8]
Bidens bipinnata is an annual herb up to 150 cm (60 inches) tall. It produces white or yellow flower heads sometimes one at a time but sometimes several, each containing both disc florets and ray florets. The species grows in fields, forests and disturbed sites such as road embankments and fallow agricultural areas.[9][10][11]

Thursday, 12 January 2017

Bidens alba dược liệu kháng SW480 (tế bào ung thư đại tràng)

Bidens alba dược liệu kháng SW480 (tế bào ung thư đại tràng)


From Wikipedia, the free encyclopedia


Bidens alba
Starr 080601-5248 Bidens alba var. radiata.jpg
Scientific classification
Kingdom:Plantae
(unranked):Angiosperms
(unranked):Eudicots
(unranked):Asterids
Order:Asterales
Family:Asteraceae
Subfamily:Asteroideae
Genus:Bidens
Species:B. alba
Binomial name
Bidens alba
(L.DC.
Synonyms
Coreopsis alba L.
Bidens alba, which belongs to the family Asteraceae, is most commonly known as shepherd's needles, beggarticks, Spanish needles or butterfly needles.[1] Bidens means two- toothed, describing the two projections found at the top of the seeds, and alba refers to the white ray florets.[2] This plant is found in tropical and subtropical regions of North America, Asia, South America, and Africa,[3] situated in gardens, road sides, farm fields and disturbed sites.[4] B. alba is an annual or short-lived perennial, which is considered an weed in the United States.[2] However, B. alba leaves are edible and can be used as medicinal remedies.[1]

Description[edit]

Bidens alba is a vascular plant. It has a similar root and stem system to others in the Aster family, all of whose members are dicots.[5] After germinating, the roots progress into a tap root that grows vertically in the ground.[1] The primary tissue of the apical meristems increases the length of the plant and the secondary roots of the lateral meristems give rise to the width. B. alba grows to a height of approximately five feet tall.[2]
The stem of B. alba plant emerges from the taproot, yet the bent stem at the base also has the ability to grow into roots at the lower nodes. Stems are mostly hairless and green to purplish in color.[4] The vascular bundle provides nutrients throughout the plant, with the phloem transporting water from the roots and the xylem obtaining food from the leaves.[2]
Bidens alba leaves, which are simple on the opposite side and compound on the underneath, are 2–10 centimetres (0.8–3.9 in) long and 1.0–3.5 cm (0.4–1.4 in) wide.[3] The underside leaf is hairy, and has toothed edges.[4] The leaves may be lobed, depending on the species. Some have teeth and some do not; each node produces two leaves along the stem.[3]
Each flowering head of B. alba, which is small, appears in radial symmetry.[1] The flowers on this plant are depicted as daisy-like due to the larger white petals and the very small yellow flowers which are located at the end of the branches.[5] Colors of the flower-heads of Bidens alba vary depending on the subspecies; some B. alba have yellow, tubular central blossoms and others may have flower-heads with white or cream petals (1.5 cm or 0.6 in long); eventually they form black linear seeds, yielding approximately 1200 seeds per plant.[2]

Cultivation[edit]

Bidens alba is a fast-growing, fast-spreading weed due to its enormous number of seeds and the ability to re-grow from stems.[3] In sub-tropical to tropical conditions, B. alba can grow almost everywhere in full sun with little or no moisture. The most growth occurs in organic matter with loose soil;[1] however, they can also propagate well on sand and lime-rocks in non-irrigated habitats. The seeds are dispersed mainly by animals or humans, although some are also carried by wind and water.[4]

Uses[edit]

Bidens alba provide a nectar source for butterflies and honey-bees. People in South Africa, Zulus and Indians consume the fresh or dried leaves by boiling them.[3]Young leaves of B. alba may also be eaten as a salad.[4] Some studies indicate that this plant can be used as a remedy for cuts, swelling, hypertensionjaundice, and diabetesB. alba also has therapeutic value for human colorectal cancer.[6] Other subspecies of B. alba are being studied for further medicinal uses. Consequently, this often-despised weed may prove to be of great benefit to society in the future.

Bidens alba

Betula utilis dược liệu kháng Hela (tế bào ung thư cổ tử cung)


Betula utilis dược liệu kháng Hela (tế bào ung thư cổ tử cung) 

Bouleau de l'Himalaya


image illustrant la flore
Cet article est une ébauche concernant la flore.
Vous pouvez partager vos connaissances en l’améliorant (comment ?) selon les recommandations des projets correspondants.
Le Bouleau de l'Himalaya (Betula utilis) est une espèce de bouleau originaire de l'Himalaya, où il pousse à des altitudes allant jusqu'à 4 500 m. L'épithète spécifique, utilis, se réfère aux nombreuses utilisations des différentes parties de l'arbre. L'écorce blanche, rappelant du papier, a été utilisée dans l'Antiquité pour écrire notamment les textes sacrés sanskrits. Elle est encore utilisée comme papier pour l'écriture des mantras sacrés, avec l'écorce placée dans une amulette et portée comme protection. Des variétés sélectionnées sont utilisées pour l'aménagement paysager à travers le monde, alors même que certaines zones de son habitat d'origine sont perdues en raison de la surexploitation des arbres comme bois de chauffage.

Taxonomie[modifier | modifier le code]

Betula utilis a été décrit et nommé par le botaniste David Don dans son livre Prodromus Florae Nepalensis (1825), à partir d'échantillons recueillis par Nathaniel Wallich au Népal en 1820. Betula jacquemontii (Spach), d'abord décrit et nommé comme espèce en 1841, est considéré maintenant comme une variété de Betula utilis et dénommé Betula utilis var. jacquemontii.

Description[modifier | modifier le code]

Dans son habitat naturel, Betula utilis tend à former des forêts, où il se présente sous forme d'arbuste ou d'arbre atteignant jusqu'à 20 m de hauteur. Il pousse souvent au milieu de conifères épars et dans les sous-bois d'arbustes, généralement à feuillage persistant comme les Rhododendrons. L'arbre est dépendant de l'eau de la fonte des neiges plutôt que des pluies de mousson. Ils sont souvent très pliés par suite du poids de la neige l'hiver dans l'Himalaya.
Les feuilles sont ovales, légèrement velues, de 5 à 10 cm de long, avec des bords dentelés. La floraison a lieu de mai à juillet, avec seulement quelques chatons mâles et souvent un court et unique (parfois une paire) chaton femelle. Le périanthe a quatre parties dans les fleurs mâles et est absent dans les fleurs femelles. Les fruits mûrissent en septembre-octobre.
La mince écorce à texture de papier est très brillante, d'un brun rougeâtre, rouge blanc ou blanc, avec des lenticelles horizontales. L'écorce pèle en larges bandes horizontales, très utiles pour la création même de grandes pages. Une espèce de champignons, appelée localement Bhurja-granthi, peut former sur les arbres des excroissances noires pouvant peser jusqu'à 1 kg.
Le bois est très dur et dense mais très fragile. Le bois de cœur est rose ou beige rougeâtre.

Galerie photo[modifier | modifier le code]

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