New green method measures calming compound in tea leaves
Medicinal Plants
The tea you steep every morning contains a natural compound linked to relaxation, and this method could help growers and buyers verify which varieties or processing methods boost it.
Tea contains a natural substance called GABA that's linked to relaxing effects, and scientists wanted a cleaner way to measure how much is in a given tea sample. They used sound waves to help pull GABA out of tea leaves using a plant-friendly, biodegradable solvent instead of toxic chemicals, then measured it with standard lab equipment. This gives tea researchers and producers a faster, greener tool to check GABA levels in different teas.
Key Findings
1
Developed an ultrasound-assisted extraction method using a supramolecular deep eutectic solvent as a green alternative to conventional toxic extraction solvents
2
Paired the extraction technique with HPLC-UV analysis to accurately quantify GABA content in tea samples
3
The method offers a more environmentally friendly and efficient approach for routine GABA testing in tea quality control
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Technical Summary
Scientists developed a faster, greener way to measure GABA, a calming compound naturally found in tea, using sound waves and a non-toxic solvent instead of harsh chemicals.
Tea is an aromatic beverage prepared by pouring hot or boiling water over cured or fresh leaves of Camellia sinensis, an evergreen shrub native to East Asia which originated in the borderlands of south-western China, north-east India and northern Myanmar. Tea is also made, but rarely, from the le...
