Exam questionKROK 2Pharmacy ยท 2009
If the internal surface of buckthorn rind is moistened with 5% alkaline solution, it becomes cherry-red colouring. This is the evidence of presence of the following substance:
Answer options
- Saponins
- Flavonoids
- Anthracene derivatives
- Tannins
- Alkaloids
Correct answer
Anthracene derivatives
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