Bengenin Chemische Eigenschaften,Einsatz,Produktion Methoden
R-S?tze Betriebsanweisung:
R36/37/38:Reizt die Augen, die Atmungsorgane und die Haut.
R20/21/22:Gesundheitssch?dlich beim Einatmen,Verschlucken und Berührung mit der Haut.
S-S?tze Betriebsanweisung:
S26:Bei Berührung mit den Augen sofort gründlich mit Wasser abspülen und Arzt konsultieren.
S36:DE: Bei der Arbeit geeignete Schutzkleidung tragen.
Beschreibung
The plant resources of bergenin are rich, mainly from Rock cabbage (Bergenia purpurascens) and thick leafy rock cabbage (Astilbe macroflora) from Saxifragaceae
and the roots, stems, and leaves of bai liang jin (Ardisia crispa) from Ardisia japonica (Thunb.) Blume. In Chinese medicine Rock cabbage (Bergenia purpurascens) is
the common folk medicine, with nourishing, stanching bleeding, relieving a cough,
and other effects. Its earliest record is contained in the classified herbal in Qing
Dynasty .
There are ten kinds of Rock cabbage (Bergenia purpurascens) in Asia, mainly
growing in East Asia, north of South Asia, and southeastern Central Asia. There are
seven species (including three endemic species) in China, mainly distributed in
Shaanxi (Qinling), Xinjiang, Sichuan, Yunnan, and Tibet .
Chemische Eigenschaften
White powder
Physikalische Eigenschaften
Appearance: white, loose needle-like crystal or crystalline powder with light odor
and bitter taste and discolored when encountered with light or heat. Solubility: dissolved in methanol and slightly soluble in water or ethanol. Melting point: 232–
240?°C. Specific optical rotation: ?38° to ?45°.
History
In 1958, Hay and Haynes first reported the complete synthesis of bergenin, using
4-methoxy gallate and A-D-bromo-2, 3, 4, 6-tetraacetylglucose as raw materials to
synthesize bergenin successfully .
In 1987, Chen Wendou determined the content of bergenin as 5.8% in the alcohol
extract of Astilbe chinensis (Maxim.), Franch. et Savat.(Luoxinfu), and Rock cabbage (Bergenia purpurascens) by using high-performance liquid chromatography.
In 1991, Wang Junping determined the content of bergenin in the alcohol extract of
Rodgersia podophylla as 19.17% with spectrophotometry.
By doing thin layer qualitative analysis, Liu Nunian discovered that bergenin
could be found in seven kinds of plants including sour moss (Ardisia solanacea),
Luosan tree (Ardisia quinquegona Bl.), Cinnabar root (Ardisia crenata Sims),
Zijinniu (Ardisia japonica), Lianzuozijinniu (Ardisia primulaefolia), Jiujielong
(Ardisia pusilla), and Xinyezijinniu (Ardisia maclurei) from Ardisia. In addition,
Zhang Yi determined the content of bergenin in the medicinal plants from Ardisiawith high-performance liquid chromatography, and results showed that there
were four species of plants with the content of bergenin of more than 1%, having
great resource utilization value. There are 11 species of plants with the content of
bergenin less than 1%, such as Xiaoqiaomuzijinniu (Ardisia arborescens), twist
fruit, fine umbrella (Ardisia affinis Hemsl.), and so on. They had some useful
value as well .
In recent years, it has been found that both 8, 10-dimethylca bergenin and
11-0-gallate betaine had weak inhibitory effects on the tumor in mice, and their
effects were stronger than that of bergenin. The effect of acetylated bergenin was
stronger than that of bergenin on liver injury induced by chloroform in mice. The
new bergenin derivatives from the Ardisia gigantifolia stapf had a certain degree of
free radical-scavenging effect and anti-HIV viral activity .
Verwenden
A herbal remedy with antioxidant, antimicrobial and antiinflammatory properties.
Definition
ChEBI: A natural product found in Cenostigma gardnerianum.
Allgemeine Beschreibung
This substance is a primary reference substance with assigned absolute purity (considering chromatographic purity, water, residual solvents, inorganic impurities). The exact value can be found on the certificate. Produced by PhytoLab GmbH & Co. KG
Clinical Use
Bergenin was recorded in People’s Republic of China Pharmacopoeia as an antitussive expectorant, used for the treatment of chronic bronchitis, emphysema, bronchial asthma, and other respiratory diseases. Used alone, or in compound preparation,
such as compound bergenin tablets, Qingjin syrup, Compound Hu ear tablets,
Qingfei antitussive syrup, liver poison net particles, Kechuanping oral solution, and
silicone lung oral solution, it is mainly used for the treatment of chronic bronchitis.
Its efficacy was proven to be relatively stable and improved in the compound preparations after a wide range of clinical validation.
Bengenin Upstream-Materialien And Downstream Produkte
Upstream-Materialien
Downstream Produkte
