China is one of the major tea-producing nations in the world, and partridge tea is one of the famous herbal teas of Hainan Island due to its many health benefits. It has been reported that partridge tea has antiatherosclerotic effects (Liu et al., 2011). Mallotus species can be used as herbal tea because they all have important antioxidant properties (Tistaerta et al., 2012).
Tea is reported to contain nearly 4000 bioactive compounds, of which one-third is a large group of plant chemicals that includes polyphenols (Tariq et al., 2010). Other compounds are alkaloids (caffeine, theophylline, and theobromine), amino acids, carbohydrates, proteins, chlorophyll, volatile organic compounds (chemicals that readily produce vapors and contribute to the odor of tea), fluoride, aluminum, minerals, and trace elements (Cabrera et al., 2003). Polyphenols found in tea are mostly flavonoids (Sumpio et al., 2006). The polyphenols catechins are thought to be responsible for the health benefits that have traditionally been attributed to tea, especially green tea (Cabrera et al., 2006). The most active and abundant catching in green tea is epigallocatechin-3-gallate (EGCG). Black tea contains much lower concentrations of these catechins than green tea (Wu and Yu, 2006). Oolong tea contains a mixture of simple polyphenols, such as catechins and complex polyphenols (Mukhtar and Ahmad, 2000). Black, green, and oolong teas are all good sources of vitamin C.
Generally, the extraction of volatile components from EGCG depend to a great extent on steam refining (SD) and soluble extraction (SE) at both logical and preparative dimensions. In any case, there have been rare studies on the correlation of volatile components from EGCG by various extraction strategies. Solid phase microextraction (SPME) was progressively quick, sensitive, and solvent-free contrasted with conventional techniques (Li et al., 2007; Lv et al., 2012). SPME was first having been widely adopted in air, water, soil, and sustenance examination (Roberts and Milo, 2000). Ordinarily, analyses are extracted from a vaporous or a fluid example by ingestion in direct-inundate SPME (DI-SPME) or adsorption on headspace SPME (HS-SPME) with a thin polymer covering being fixed to the strong surface of a fiber in an infusion needle (Pragst, 2007). Because HS-SPME is nonpolluting to fiber-contrasted and DI-SPME, it was eventually chosen over the SD and SE methods. Using gas chromatography-mass spectrometry (GC-MS) has the advantage of empowering compound-recognizable proof by comparing the mass spectra of the samples with those of authentic standards from the National Institute of Standards and Technology and contrasting the retention indices with those announced by a past accessible investigation.
Tea is one of the most popular beverages in the world because of its taste and numerous health benefits. Partridge tea, a famous local tea with numerous favorable characteristics from Hainan Island of China, has elements of strengthening the gallbladder (Li et al., 2014), relieving pain, and enhancing immunity (Liu et al., 2008, 2011; Yan et al., 2012). It has been admired by the literati of the past and is known as Ganoderma lucidum grass in various tea items (Yan and Li, 2016). Although many studies have revealed volatile components in tea, the research on volatile components in the leaves of partridge tea is scarce. Therefore, in the present study, HS-SPME followed by GC-MS was conducted to determine the volatile components in the red and green leaves of partridge tea.
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