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Showing posts with label pharmacognosy. Show all posts
Showing posts with label pharmacognosy. Show all posts

Wednesday, 18 October 2017

How to prepare silica gel slurry for TLC?

 
I have silica gel G with Calcium sulfate in my lab. What proportion of silica powder and water should I use to make the slurry? I have already tried it, but after activation the silica powder just slides out of plate. Any suggestion?
 

Sunday, 1 March 2015

12 Foods That Naturally Whiten Your Tee






 They may be bright red, but malic acid, a chief component of this summery fruit, acts as a natural astringent to remove surface tooth discoloration, says Dr. Irwin Smigel, president of the American Society for Dental Aesthetics. Fresh, juicy strawberries taste great in any meal—salads, desserts, cereal—and are widely available at farmers markets this time of year, so getting your daily dose is both simple and delicious.

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

Medicinal Root & Rhizome 1. Ginger


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

Active constituent: Volatile oil (gingerol)

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 &