Evaluation of perilla (Perilla frutescens) aroma: Analysis of volatile aromatic components in fresh perilla leaves by adsorptive column method
2002
Morinaka, Y. (Tsukuba Univ., Ibaraki (Japan)) | Fukuda, N. | Takayanagi, K.
Adsorptive column, packed with Porapak Q as the adsorbent, was used to concentrate volatile compounds in fresh perilla (Perilla frutescens) leaves prior to gas chromatographic (GC) analysis. The aroma concentrates prepared by this method yielded information related to the sensory evaluations of the sample. The GC tracing from 36 perilla leaf samples exhibited a total of 120 peaks; the maximum number of peaks per sample was 67 while the minimum was 26, with an average of 45 peaks. The major component in 29 of 36 perilla leaf samples was perillaldehyde, whereas dillapiol, elsholt-ziaketone or perillaketone was the major one in the rest of the samples. The 36 leaf samples fell into 6 groups by cluster analysis of the GC data, which was not fully consistent with grouping on the basis of sensory evaluation. However, there was a certain correspondence between GC profiles and sensory profiles so that the aroma concentrates, prepared by the adsorptive column method, yielded significant information related to sensory evaluations of the sample.
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