Translate

Search This Blog

Tuesday 9 December 2014

3. Caraway fruit


Bot.origin: the dried ripe of Carum carvi
F: Umbelliferae
Active constituent:

Sunday 7 December 2014

2. Fennel fruit


Bot.origin: the dried ripe of Foeniculum vulgare 
F: Umbelliferae
Active constituent: Volatile oil
Key element (microscopically examination):

Medicinal Fruit 1. Anise fruit


Bot.origin: the dried ripe of Pimpinella anisum
F: Umbelliferae
Active constituent: Volatile oil
  
Key element (microscopically examination):

2. Liquorice




Bot.origin:  The dried unpeeled root of glycyrrhiza glabra
F: Leguminosae
Active constituent:

Saturday 6 December 2014

Isolation of trimyrisyin from myristica fragrana


Isolation of piperine from black papper



Test for flavonoids and flavonoidal glycoside



Isolation of khellin from Ammivisnaga


Isolation of citric acid from lemon juice


Isolation of caffeine from Tea


Extraction and identification of tannins


Extraction and identification of saponin glycosides


Isolation and identification of Datura stramonium alkaloids


Medicinal Root & Rhizome 1. Ginger


Bot.origin: The dried rhizomes of Zingiber officinal    
F: Zingiberaceae

Active constituent: Volatile oil (gingerol)

Chemical tests for the identification of anthroquinonone glycosides



Friday 28 November 2014

2. Fenugreek seed



Bot.origin: Seeds of Trigonella foemum-graecum
                                          F: Leguminosea
Active constituent:

Medicinal seed 1. Lin seed




Bot.origin: Seeds of Linum usitatissumum
F: Linaceae
Active constituent:

3. Pomegranate bark




                             Bot.origin: The dried bark of Punica granatum  
F: Punicaceae
  Active constituent:

2. Cinnamon bark


Bot.origin: The dried bark of Cinnamomum zeylanicum   
F: Lauraceae
Active constituent:

Medicinal Bark 1. Cinchona bark


                           

                                Bot.origin: The dried bark of Cinchona succirubra   
F: Rabiaceae
Active constituent:

4. Saffron





Bot.origin: The dried stigma of Crocus sativus.
F: Iridaceae.
Active constituent:
1.     Crocin (coloring matters
2.     Picrocin (glycoside)
3.     Volatile oil & wax
Key element (microscopically examination):

Sunday 23 November 2014

3.Arnica flowers



Bot.origin: The dried flower heads of Arnica Montana.
F: compositae. 

Active constituent:

2. Clove flower

Bot.origin: The dried flower buds of Egenia caryophullus
  F: Myrtaceae

Active constituent: volatile oil (eugenol)

Medicinal Flower 1. Chamomile


Bot.origin: The flower head of Anthemis nobilis & other species
F: Compsite
Active constituent:

9. Uva Ursi leaves



origin: the dried leaves of Arctostaphylos uva-ursi   Bot.
F: Ericaceae 

Active constituent:

7. Eucalyptus Leaves


Bot.origin: the dried leaves of Eucalyptus Globulus.


F: Myrtaceae 
Active constituent: Tannin, volatile oil, eucalyptol.
Uses:

6. Henna Leaves


origin: the dried leaves of Lawsonia alba & other species   Bot.
F: Lythraceae
Active constituent:
1.     Lawsone, coloring substance of naphthaquinone structure.
2.     Tow coumarin derivatives, fat &

5. Guafa Leaves




Bot.origin: the dried leaves of Psidium guava.
F: Myrtaceae 
Active constituent: Tannin, essential oil, resins, flavonid, glycosides &

aldawaa: 5. Tea Leaves

aldawaa: 5. Tea Leaves: Bot. origin: the dried leaves of Thea sinensis Linn.   F: Theaceae              Active constituent: 1.        Alkaloids (M...

5. Tea Leaves

Bot. origin: the dried leaves of Thea sinensis Linn. 
F: Theaceae           
Active constituent:
1.      Alkaloids (Methyl xanthenes):

Wednesday 12 November 2014

3. Datura Leaf

Bot.origin: the dried leaves of Datura stramonium & other species 
F: Solanaceae
Active constituent: Alkaloids (Hyosine, hyoscyamine)
Key element (microscopically examination):

4. Hyoscyamus Leaves

Bot. origin: the dried leaves and flowering top of Hyoscyamus niger linn . 
F: Solanceae          
Active constituent:
1.      Alkaloids:
a.     hyoscyamine
b.      scopolamine
Key element (microscopically examination):

Tuesday 11 November 2014

2. Digitalis leaf

Bot.origin: The dried leaves of Digitalis purprea or Digitalis lanata
F: Scrophulariaceae              
Digitalis purpurea                                             Digitalis lanata
                                         
Active constituent: Cardiac glycosides
Key element (microscopically examination):

1. Senna leaf

Bot.origin: the dried leaves of Cassia senna
F: Leuguminosae
Active constituent: Anthraquinone glycosides: sennosoides A and B
Key element (microscopically examination):

Thursday 30 October 2014

Macrolide Antibiotics Comparison


·         Structure
·         Mechanism of action
·         Spectrum of activity
·         Indications and uses
·         Pharmacologic properties
·         Drug interactions
·         Key differences
·         Conclusions
·         Brief comparison

Cephalosporin Antibiotics


Cephalosporins are the most frequently prescribed class of antibiotics. They are structurally and pharmacologically related to the penicillins. Like the penicillins, cephalosporins have a beta-lactam ring structure that interferes with synthesis of the bacterial cell wall and so are bactericidal (which means that they kill bacteria).

Aminoglycosides

Aminoglycosides are derived from various species of Streptomyces.
In 1943, Selman Waksman, together with his co-workers, discovered that a fungus Streptomyces griseus produced an antibiotic substance which they named "streptomycin." Selman Waksman was awarded the Nobel Prize in Physiology or Medicine in 1952 for his discovery of streptomycin.

Macrolides


The macrolide antibiotics are derived from Streptomyces bacteria, and got their name because they all have a macrocyclic lactone chemical structure. The macrolides are bacteriostatic, binding with bacterial ribosomes to inhibit protein synthesis. Erythromycin, the prototype of this class, has a spectrum and use similar to penicillin. Newer members of the group, azithromycin and clarithyromycin, are particularly useful for their high level of lung penetration. Macrolide antibiotics are used to treat respiratory tract infections (such as pharyngitis, sinusitis, and bronchitis), genital, gastrointestinal tract, and skin infections.

Tetracyclines


Tetracyclines got their name because they share a chemical structure that has four rings. They are derived from a species of Streptomyces bacteria. Tetracycline antibiotics are broad-spectrum bacteriostatic agents, which inhibit bacterial protein synthesis. Tetracyclines may be effective against a wide variety of microorganisms, including rickettsia and amebic parasites.

Fluoroquinoloness


Fluoroquinolones (fluoridated quinolones) are the newest class of antibiotics. Their generic name often contains the root "floxacin". They are synthetic antibiotics, and not derived from bacteria. Fluoroquinolones belong to the family of antibiotics called quinolones. The older quinolones are not well absorbed and are used to treat mostly urinary tract infections. The newer fluoroquinolones are broad-spectrum bacteriocidal drugs that are chemically unrelated to the penicillins or the cephalosporins. Because of their excellent absorption fluoroquinolones can be administered not only by intravenous but orally as well.

Cephalosporins


Cephalosporins have a mechanism of action identical to that of the penicillins. However, the basic chemical structure of the penicillins and cephalosporins differs in other respects, resulting in some difference in the spectrum of antibacterial activity. Like the penicillins, cephalosporins have a beta-lactam ring structure that interferes with synthesis of the bacterial cell wall and so are bactericidal. Cephalosporins are derived from cephalosporin C which is produced from Cephalosporium acremonium.