Green Tea Volatiles And Its Influence To Alleviate The Fatigue Of Human Body

For green tea, it is a complete set of processes “Leaves picking-Spreading-Processing–Storage”. In the paper, the composition and relative contents of the green tea volatiles were collectedand analyzed by the method of using dynamic headspace collection and thermal desorption system/gaschromatography/mass spectrum (TDS-GC-MS), including the volatiles of spreading tea fresh leave，the dry tea by microwave fixing, and the dry tea saved60days at room temperature. In the paper,23subjects with fatigue tendency were selected by Fatigue Scale-14and inquiry of recent situation, theirbrain waves difference would be measured using Biofeedback Instrument by sniffing tea volatiles,it isto analyze the influence of tea volatiles to alleviate the fatigue of human body. The paper combined withrelated literature in recent years, aims to provide data support for the relevant ecological research on thetea volatiles and its impact on human health.By carding and analyzing the measured data of tea volatiles, and the results were getted as follow:1) The total of56kinds of the compounds of esters, terpenes, aldehydes, ketones, alcohols, alkanes,phenols, and other heterocyclic compounds were obtained in tea volatiles, but only9kinds of thecompounds are common. The volatile compounds of spreading tea fresh leave were mainly with theester compounds, and the compound (Z)-3-hexene-1-ol acetate is the main characteristics of volatiles.For the new dry tea production and the dry tea storaged at room temperature， the compoundD-limonene is the main characteristics of volatiles.2) The quantityof terpenes of the volatile compounds of the green tea is less under natural conditions,more of characteristics flavoring compounds of green tea could not be detected. Compared with theprevious results about tea aroma, the results were quite different.3) From the view of the entire process, the volatiles abundance of the saved dry tea is significantlyweaker than the spreading fresh leaves.By sorting data of the electroencephalogram，and analyzing the influence of tea volatiles toalleviate the fatigue of human body, and the results were getted as follow：1) From BEFORE stage, DURING stage to the AFTER stages, the tested correspondingamplitude ratios of θ/α, the θ/SMR θ/βwere showed a downward trend and reached a verysignificant level (P <0.01), when sniff spreading tea fresh leave. Sniffing spreading tea fresh leave canalleviate human fatigue. 2) At DURING stage, the tested corresponding amplitude ratios of θ/α, the θ/SMR,θ/βdecreased and reached a significant level (P <0.05) when sniff the dry tea. Compared to the BEFOREstage, the tested corresponding amplitude ratios of θ/α, the θ/SMR,θ/β decreased and reached asignificant level (P <0.05) by sniffing new dry tea production, but it didn’t reach a significant level bysniffing the dry tea stored at room temperature. Sniffing new dry tea production can alleviate humanfatigue, sniffing the dry tea stored at room temperature can not.In addition, the paper put forward further research strategies concerned the tea plant volatileson the basis of ecological research on other plant volatiles.