Comparative Study on the Main Chemical Constituents in Different Parts of Three Gastrodia elata Tubers
The contents of main chemical components in different parts of 3 kinds of Gastrodia elata rhizome were determined and HPLC fingerprints were established.The results showed that the peak similarity of HPLC fingerprints of different parts of the three species was high(0.848～0.946).Gastrodin,p-hydroxybenzyl alcohol and balisenside E were significantly higher in the navel of green Gastrodia elata than in other parts,and the other chemical components were highest in the arrow bud end.The content of Gas-trodin in the middle of yellow Gastrodia elata was significantly higher than that in other parts,and the other chemical components were highest in the arrow bud end.Gastrodin,p-hydroxybenzyl alcohol,balisenside B and balisenside E were significantly higher than those in other parts,and the other chemical components were highest in the end of arrow bud.The results showed that there was little difference in the types of main chemical components in different parts of the three Gastrodia elata tubers,but there were signifi-cant or extremely significant differences in the contents.The chemical components of all parts of green Gastrodia were higher than that of black Gastrodia elata and yellow Gastrodia elata..
Gastrodia elata tuberchemical compositionHPLCfingerprintsGastrodinParishin B
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