18 Questions
Which compound contributes to the yellow color of flowers or fruits?
Hesperidin
Which compound is NOT listed as a constituent of Gingko biloba?
Salicin
Which compound is a potent antioxidant with anti-inflammatory and antiviral properties?
Rutin
What is the primary use of Ethylvanillin?
Substitute for natural vanillin
Which compound is associated with the treatment of capillary bleeding secondary to fragility?
Diosmin
Which compound is a bioflavonoid derived from citrus fruits and soya?
Naringen
What is the lethal dose range of amygdalin in terms of milligrams per kilogram of body weight?
0.5-3.5mg/kg BW
Which substance is a source of Laetrile or Vitamin B17 and is a controversial treatment for sickle cell anemia?
Bitter Almond (Prunus amygdalus)
Which plant source contains sinigrin, and the enzyme myrosinase can convert it into allyl isothiocyanate (mustard oil)?
Black Mustard (Sinapis nigra)
What test results in a brick-red coloration when amygdalin is present?
- Guignard’s Test
What is the main compound responsible for the characteristic odor of mustard oil?
Allyl isothiocyanate
Which plant's glycoside contains Gluconasturtiin as its aglycone?
Watercress (Nasturtium officinale)
What is the basis of the extensive use of tannins in the leather industry?
Formation of insoluble compounds with proteins
What is a key characteristic of tannins that makes them useful in the tanning industry?
Acidic nature
Which class of tannins is readily hydrolyzed to yield phenolic acids and sugar?
Condensed tannins
What are true tannins also known as?
Hydrolyzable tannins
What is the main difference between true tannins and pseudotannins?
Ability to convert animal hide to leather
What are phlobaphene compounds formed from condensed tannins known for?
Insolubility in water
Test your knowledge on amygdalin, a B-glycosidic derivative used as a flavoring agent and found in cyanogenic plants. Explore topics like the stability of amygdalin, lethal doses of HCN, and identifying substances containing amygdalin with Guignard's Test.
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