Question

Coffee powder contain _____ w/w of caffeine

• A. 10-15%
• B. 8-10%
• C. 3-5%
• D. 2-3%

Hint:

Coffee: 2-3% caffeine; Tea: 1-4% caffeine.

Answer 1

The Correct Option is D

Step 1: Concept
Caffeine is the primary purine alkaloid found in the seeds of Coffea arabica and other species.

Step 2: Meaning
The percentage w/w indicates the weight of caffeine present in 100 grams of the dried coffee powder.

Step 3: Analysis
While the concentration can vary depending on the species (Robusta generally has more than Arabica), standard pharmaceutical and pharmacognostical references state the average caffeine content in coffee is approximately 1 to 3 percent.

Step 4: Conclusion
Based on the provided options, 2-3% is the most accurate representation of the standard caffeine content.

Final Answer: (D)