2024, Vol. 12, Issue 1, Part C

author(s)
Samradnyee J Patle, Jatin A Rahangdale, Indrayani P Donode, Jayant D Turkar, Madhuri S Nandgave and Upadesh B Lade

abstract
Caffeine is the world's most widely consumed drug with its main source found in coffee. We evaluated the caffeine content of caffeinated and decaffeinated specialty coffee samples obtained from coffee shops. Caffeine was isolated from the coffee by liquid-liquid extraction and analyzed by gas chromatography with nitrogen-phosphorus detection. In this study, the coffees sold as decaffeinated were found to have caffeine concentrations less than 17.7 rag/dose. There was a wide range in caffeine content present in caffeinated coffees ranging from 58 to 259 rag/dose. The mean (SD) caffeine content of the brewed specialty coffees was 188 (36) mg for a 16-oz cup. Another notable find is the wide range of caffeine concentrations (259-564 rag/dose) in the same coffee beverage obtained from the same outlet on six consecutive days. Caffeine is a chemical found in coffee, tea, cola, guarana, mate, and other products. Caffeine is one of the most commonly used stimulants among athletes. Taking caffeine, within limits, is allowed by the National Collegiate Athletic Association (NCAA). Urine concentrations over 15 mg/mL are prohibited. It takes most people about 8 cups of coffee providing 100 mg/cup to reach this urine concentration. The aim of this study is to determine the concentration of caffeine in reputed tea types and coffee. The Technique used here is Liquid-Liquid Extraction to extract caffeine. The Study also focused whether we can extract a significant amount of caffeine using different extracting solvents and different bases.