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| Contents of three kinds of multi-methoxy flavonoids and aromacomponents in tangerine peel oils from different origins |
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| Abstract: |
| In this study，the contents of three individual polymethoxylated flavonoids（nobiletin，sevenmethoxy
flavonoids，tangeretin）and the aroma components were compared and analyzed in the tangerine peel oils
from Guangxi，Guangdong Xinhui，Guangzhou suburbs，Jiangxi and Hunan，to provide evidence for the selection of
tangerine peel and the origin identification. The results of the determination of polymethoxylated flavonoids showed
that the contents of three individual polymathoxylated flavonoids in tangerine peel oils from the five different origins
varied significantly，the tangerine peel from Guangxi ranked the highest，with the total of 33.401 mg/mL，followed by
the tangerine peel oils from Guangdong Xinhui，Jiangxi and Guangzhou suburbans，which were 19.091，18.058 and
16.710 mg/mL respectively；and the total contents of the three individual polymethoxylated flavonoids from Hunan origin
Tangerine peel was the lowest with 8.705 mg/mL. The GC/MS results showed that tangerine peel oil from Guangdong
Xinhui contained 41 constituents，with the main component of olefine，alkane and also a small amount of aldehyde，
alcohols，vitamin E，sinensetin and so on，which was far richer than other 4 tangerine peel oils，whose constituents were
mainly alkene substances（such as D- limonene etc.）. These substances accounted for above 95% of the total tangerine
peel oil component. |
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