2024Journal articleFree to read
Thuy Ngoc Nguyen, Thi Kim Truong, Do Quynh Anh Pham, Dinh Tu Nguyen, Thi Vi Phung, Hồng Anh Dương
Ministry of Science and Technology Vietnam
The popular products (n=89 samples) of tea, coffee, and bottled beverages originated from tea, coffee, and energy drinks on the market today, were collected and analysed for caffeine content. Caffeine levels in tea products were in a range of 4.11 and 22.37 mg/g d.w (mean 12.67±4.90 mg/g d.w), with the caffeine levels decreasing in the order of matcha tea ~ green tea gt; black tea gt; oolong tea gt; fresh tea. Caffeine levels in coffee ranged from 3.32 to 21.17 mg/g d.w (mean 11.09±5.02 mg/g d.w) with higher caffeine amounts in instant coffee compared to roasted powdered coffee. This is particularly noteworthy for consumers because energy drinks and bottled coffee contain a caffeine amount 5-7 times higher than bottled tea water. According to the recommended value (lt;400 mg/day for adults), the maximum intake of tea and coffee was calculated to be 17-48 g of dried weight per day, depending on the type of product, while energy drinks and bottled coffee can be consumed at a rate of 3-6 packaging units per day. However, only using low doses of caffeine (lt;200 mg/day) is likely to have more positive health effects. Children and pregnant women should consider using these beverages and follow the manufacturer’s recommendations.
Abstract text comes from PubMed, OpenAlex or Europe PMC and belongs to the authors and publisher.
Study type
Observational (human)
Surveys, cohorts and consumer studies, with no intervention.
Assigned automatically from the title, abstract and subject terms.
Topics
Matcha is mentioned in passing here (named in the abstract).
Thuy Ngoc Nguyen, Thi Kim Truong, Do Quynh Anh Pham, Dinh Tu Nguyen, Thi Vi Phung, Hồng Anh Dương. (2024). Evaluation of caffeine levels in some popular drinks originated from tea, coffee, and energy drinks on the Vietnam market. Ministry of Science and Technology Vietnam. https://doi.org/10.31276/vjst.66(10db-hh).70-75
DOI: 10.31276/vjst.66(10db-hh).70-75
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