Comparison of Major Volatile Compounds in Three Varieties of Ginger Grown in Indonesia using Solid Phase Micro Extraction Gas Chromatography/Mass Spectroscopy Followed by Electronic Nose Based on Metal Oxide Semiconductor Gas Sensor
Solid Phase Micro Extraction-Gas Chromatography/Mass Spectroscopy (SPME-GC/MS) was employed to identify major compounds in three varieties of ginger grown in Indonesia, namely: small-white ginger (SWG), big-white ginger (BWG), and red ginger (RG). SWG was dominated by b-sesquiphellandrene and a-farn...
| Main Authors: | , |
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| Format: | Article |
| Language: | English |
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IFSA Publishing, S.L.
2019-02-01
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| Series: | Sensors & Transducers |
| Subjects: | |
| Online Access: | https://sensorsportal.com/HTML/DIGEST/february_2019/Vol_230/P_3064.pdf |
| Summary: | Solid Phase Micro Extraction-Gas Chromatography/Mass Spectroscopy (SPME-GC/MS) was employed to identify major compounds in three varieties of ginger grown in Indonesia, namely: small-white ginger (SWG), big-white ginger (BWG), and red ginger (RG). SWG was dominated by b-sesquiphellandrene and a-farnesene. The major chemical compounds identified in BWG were dominated by: a- zingiberene, cedren-13-ol, 8-,b-bisabolene, and neral, while curcumene, neral, a-zingiberene, citral, and geraniol were most dominant in RG. Sensory analysis using electronic nose (e-nose) based on metal oxide semiconductor (MOS) gas sensor was also employed to measure the sensory response of these gingers. Principal component analysis (PCA) of feature e-nose response showed that the feature response of three gingers can be separated. The score plot in the PC1-PC2 coordinate of PCA obtained 89.30 % of variance at two principal components. PC1 contributed 58.30 % of the variance, while PC2 contributed 31.00 %. Furthermore, hierarchical cluster analysis (HCA) of feature response of three gingers indicated that the similarity level between BWG and RG is almost 36.12 %, due to the presence of a-zingiberene and neral, that was identified more than 10 % both in BWG and RG. |
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| ISSN: | 2306-8515 1726-5479 |