High Boiling Compounds of Neutral Essential Oil from Tea 1029 TABLE I. FRACTIONATION BY SILICA-GEL COLUMN CHROMATOGRAPHY
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چکیده
gaschromatography (PGLC) as shown in Fig. 2. Fraction C had a typical aroma of tea, and the yield was about 10 g. In this com munication, we wish to report components in the fraction. Fraction C was subjected to silica gel column chromatography using solvents system as shown in Table I and the eluate was collected every 100 ml, which was analyzed by GLC. The eluate was finally separated into ten fractions (tentatively named as BT-1•`10) as shown in Fig. 3. The struc tures of theaspirone and dihydroactinidiolide which were obtained from BT-7 were previ-
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تاریخ انتشار 2008