Comparison of three different methods for adsorption of aroma compounds for green tea, yellow tea and white tea
Combined with gas chromatography-mass spectrometer (GC-MS), we compared the adsorption characteristics and laws of aroma compounds for green tea, yellow tea and white tea by using three methods, i.e. headspace solid-phase micro-extraction (HS-SPME), headspace stir bar sorptive extraction (HS-SBSE),...
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| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
Zhejiang University Press
2020-08-01
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| Series: | 浙江大学学报. 农业与生命科学版 |
| Subjects: | |
| Online Access: | https://www.academax.com/doi/10.3785/j.issn.1008-9209.2019.09.191 |
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| Summary: | Combined with gas chromatography-mass spectrometer (GC-MS), we compared the adsorption characteristics and laws of aroma compounds for green tea, yellow tea and white tea by using three methods, i.e. headspace solid-phase micro-extraction (HS-SPME), headspace stir bar sorptive extraction (HS-SBSE), and Tenax TA. Under the same ratio of tea to water, equilibrium time, extraction temperature and adsorption time, the enrichment effect of the three methods on aroma compounds for nine tea samples was analyzed. The results showed that the absorption capacity of Tenax TA was the highest; HS-SBSE was the second; and HS-SPME was the lowest. HS-SPME and HS-SBSE showed better enrichment effect for terpene and low water-soluble compounds, while Tenax TA showed better adsorption capacity of aldehyde and could trap some of the water-soluble and highly volatile substances easily. In addition, compared with Tenax TA, the relative content of long carbon chain compounds such as linalool, linalool oxide and cis-3-hexenyl hexanoate extracted by HS-SPME and HS-SBSE was significantly higher (P＜0.05), while the relative content of short carbon chain compounds including 2-methylbutyraldehyde and 1-penten-3-ol was lower (P＜0.05). In conclusion, the analysis results of Tenax TA method is more authentic in aroma composition, in consideration of a strong competition effect during HS-SPME and HS-SBSE extraction. |
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| ISSN: | 1008-9209 2097-5155 |