Step 1: Understanding the Concept:
Many organic acids are found naturally in plants. Gallic acid (3,4,5-trihydroxybenzoic acid) is a common phenolic acid.
Step 2: Key Formula or Approach:
Identify the botanical source for gallic acid.
Step 3: Detailed Explanation:
- Indian gooseberry (Amla): It is a very rich source of Vitamin C and tannins, including gallic acid and ellagic acid.
- Citrus fruits: Primarily contain Citric acid.
- Wintergreen: Source of Methyl salicylate (Oil of wintergreen).
- Clove: Primarily contains Eugenol.
Step 4: Final Answer:
Indian gooseberry is a source of gallic acid.