| Title: | Key-Marker Volatile Compounds in Aromatic Rice (Oryza sativa) Grains: An HS-SPME Extraction Method Combined with GCxGC-TOFMS |
| Author(s): | Setyaningsih W; Majchrzak T; Dymerski T; Namiesnik J; Palma M; |
| Address: | "Department of Food and Agricultural Product Technology, Faculty of Agricultural Technology, Gadjah Mada University, Jalan Flora No. 1, Bulaksumur, Depok, Sleman, Yogyakarta 55281, Indonesia. Department of Analytical Chemistry, Faculty of Chemistry, Gdansk University of Technology, Narutowicza 11/12 Str., 80-233 Gdansk, Poland. Department of Analytical Chemistry, Faculty of Sciences, IVAGRO, Campus del Rio San Pedro, University of Cadiz, Puerto Real, 11510 Cadiz, Spain" |
| DOI: | 10.3390/molecules24224180 |
| ISSN/ISBN: | 1420-3049 (Electronic) 1420-3049 (Linking) |
| Abstract: | "The aroma of rice essentially contributes to the quality of rice grains. For some varieties, their aroma properties really drive consumer preferences. In this paper, using a dynamic headspace solid-phase microextraction (HS-SPME) system coupled to a two-dimensional gas chromatography (GCxGC) using a time-of-flight mass spectrometric detector (TOFMS) and multivariate analysis, the volatile compounds of aromatic and non-aromatic rice grains were contrasted to define some chemical markers. Fifty-one volatile compounds were selected for principal component analysis resulting in eight key-marker volatile compounds (i.e., pentanal, hexanal, 2-pentyl-furan, 2,4-nonadienal, pyridine, 1-octen-3-ol and (E)-2-octenal) as responsible for the differences between aromatic and non-aromatic rice varieties. The factors that are most likely to affect the HS-SPME efficiency for the aforementioned key-marker compounds were evaluated using a 2 I I I 5 - 2 fractional factorial design in conjunction with multi-response optimisation. The method precision values, expressed as % of coefficient of variation (CV), were ranging from 1.91% to 26.90% for repeatability (n = 9) and 7.32% to 37.36% for intermediate precision (n = 3 x 3). Furthermore, the method was successfully applied to evaluate the volatile compounds of rice varieties from some Asian countries" |
| Keywords: | Gas Chromatography-Mass Spectrometry Odorants Oryza/*chemistry Principal Component Analysis Solid Phase Microextraction Volatile Organic Compounds/*isolation & purification aromatic rice fractional factorial design multi-response optimisation volatile com; |
| Notes: | "MedlineSetyaningsih, Widiastuti Majchrzak, Tomasz Dymerski, Tomasz Namiesnik, Jacek Palma, Miguel eng T/47/D2.3/KK.04.05/2019/Ministry of Research, Technology and Higher Education of the 371 Republic of Indonesia/ WCU/Ministry of Research, Technology, and Higher Education 374 under World Class University/ Switzerland 2019/11/23 Molecules. 2019 Nov 18; 24(22):4180. doi: 10.3390/molecules24224180" |
