Monday, 27 January 2014

Herbal Cascara Sagrada (Rhamnus purshiana) and Anti bacterial effects

Cascara sagrada is a species of buckthorn, genus Rhamnus, belonging to the family Rhamnaceae, native to western North America, it's bark has been used in traditional medicine for gastrointestinal support. and it is thought to have a laxative and natural cleansing, etc.,
The immune system is the set of cells and their activity against antigens or infectious agents that comprises of the body's defense system against diseases. The immune system does a great job of keeping people healthy and preventing infections. Beside foods and nutritional supplements, herbs also play a important role in helping the immune system defend against viruses and bacteria attacks.

The Ingredients
The chemical constituents of Cascara Sagrada include Aloe-emodin, Anthrquinone glycosides (Barbaloin Cascarosides A, B, C and D ChrysaloinFrangul), Chrysophanol, Emodin, Heterodianthrones palmidin A, B, and C, dianthrones, Oxanthrone, Rhein, Tannins, etc.

The Benefits
Methicillin-resistant Staphylococcus aureus (MRSA) is a substantial contributor to morbidity and mortality. Emodin (EM), the major component found in Cascara Sagrada and many other plants combined with ampicillin (AM) or oxacillin (OX) have a showed a positive effects against all strains of bacterias, resulted in a fractional inhibitory concentrations index (FICI) ranging from 0.37-0.5 and from 0.37-0.75, respectively. Other in the study of the effect of glycoside on the antibacterial activity of aloin, showed Aloe-emodin (inhibition diameter < 5.0 mm), changed the morphology of E. coli and damaged the outer cell structure.

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(1) Synergistic effect of emodin in combination with ampicillin or oxacillin against methicillin-resistant Staphylococcus Lee YS, Kang OH, Choi JG, Oh YC, Keum JH, Kim SB, Jeong GS, Kim YC, Shin DW, Kwon DY.(PubMed)
(2) [Relationship between antibacterial activity of aloe and its anthaquinone compounds].

[Article in Chinese] by Tian B, Hua YJ, Ma XQ, Wang GL.(PubMed)