What is decaffeinated tea ?
For teas to be labeled decaffeinated, the caffeine content should not exceed 0.4% by dry weight, which is equivalent to approximately 4 mg of caffeine per 170 ml serving. The process of decaffeination extracts the caffeine in tea. The current commercially available methods for decaffeinating black tea are solvent based extraction using ethyl acetate or methylene chloride. This process does diminish the nutrients. However, the newer healthy method of decaffeinating tea and extraction using supercritical (solid) carbon dioxide (CO2) avoids the loss of nutrients. Decaffeinated black teas are popular in Western cultures. The United States has approved both the use of carbon dioxide and ethyl acetate in the process of removing caffeine from black tea. The American Medical Association (AMA) has stated that up to seven cups of black tea a day is not an excessive amount of caffeine consumption for most adults.
For teas to be labeled decaffeinated, the caffeine content should not exceed 0.4% by dry weight, which is equivalent to approximately 4 mg of caffeine per 170 ml serving. The process of decaffeination extracts the caffeine in tea. The current commercially available methods for decaffeinating black tea are solvent based extraction using ethyl acetate or methylene chloride. This process does diminish the nutrients. However, the newer healthy method of decaffeinating tea and extraction using supercritical (solid) carbon dioxide (CO2) avoids the loss of nutrients. Decaffeinated black teas are popular in Western cultures. The United States has approved both the use of carbon dioxide and ethyl acetate in the process of removing caffeine from black tea. The American Medical Association (AMA) has stated that up to seven cups of black tea a day is not an excessive amount of caffeine consumption for most adults.
For teas to be labelled decaffeinated, the caffeine content should not exceed 0.4% by dry weight, which is equivalent to approximately 4 mg of caffeine per 170 ml serving. The process of decaffeination extracts the caffeine in tea. The current commercially available methods for decaffeinating black tea are solvent based extraction using ethyl acetate or methylene chloride, and extraction using supercritical (solid) carbon dioxide. All three methods extract caffeine with minimum effect to the quality of tea.
