PMID- 31696162 OWN - NLM STAT- PubMed-not-MEDLINE LR - 20200929 IS - 2661-801X (Electronic) IS - 2661-801X (Linking) VI - 13 IP - 1 DP - 2019 Dec TI - Direct analysis of volatile components from intact jujube by carbon fiber ionization mass spectrometry. PG - 125 LID - 10.1186/s13065-019-0641-4 [doi] LID - 125 AB - In situ analysis of odor is an important approach to connect odor with chemical composition. However, it is difficult to conduct a rapid direct analysis of the odor sample because of low analyte concentration and sampling. To achieve the direct analysis, a carbon fiber ionization mass spectrometry (CFI-MS) method has been developed and applied to measure volatile components releasing from intact jujube. To build the CFI source, a 2.0-cm long carbon fiber bundle was integrated on the pin of a commercial corona discharge needle by mean of a 1.3-cm long stainless hollow tube. Odor sample driven by N(2) gas can be directly introduced to the carbon fiber bundle to complete the ionization of analytes. Acetic acid, ethyl acetate, ethyl caproate, octyl acetate, and damascone present in jujube were selected to evaluate the performance of the CFI-MS method on quantitative analysis of the gaseous sample. Good lineary was obtained (R(2) >/= 0.9946) between 5.0 and 500.0 ng/L with limits of detection (LOD) ranging from 0.5 to 1.5 ng/L. Recoveries of five volatile compounds for the spiked jujube samples were between 94.36 and 106.74% with relative standard deviations (RSDs) less than 7.27% (n = 5). Jujube of different varieties can be distinguished by principal components analysis based on the analytical results of volatile compounds. The developed method demonstrated obvious advantages such as simplicity, high throughput, good sensitivity and wide range of applicability, which will be an alternative way for in situ analysis of the odor sample. CI - (c) The Author(s) 2019. FAU - Sun, Shihao AU - Sun S AD - 1Center for Chinese Medicine Therapy and Systems Biology, Shanghai University of Traditional Chinese Medicine, Shanghai, 201203 China. ISNI: 0000 0001 2372 7462. GRID: grid.412540.6 AD - 2Key Laboratory in Flavor & Fragrance Basic Research, Zhengzhou Tobacco Research Institute, China National Tobacco Corporation, Zhengzhou, 450001 China. ISNI: 0000 0004 0386 2036. GRID: grid.452261.6 FAU - Zhang, Yihan AU - Zhang Y AD - 2Key Laboratory in Flavor & Fragrance Basic Research, Zhengzhou Tobacco Research Institute, China National Tobacco Corporation, Zhengzhou, 450001 China. ISNI: 0000 0004 0386 2036. GRID: grid.452261.6 FAU - Li, Peng AU - Li P AD - 2Key Laboratory in Flavor & Fragrance Basic Research, Zhengzhou Tobacco Research Institute, China National Tobacco Corporation, Zhengzhou, 450001 China. ISNI: 0000 0004 0386 2036. GRID: grid.452261.6 FAU - Xi, Hui AU - Xi H AD - 2Key Laboratory in Flavor & Fragrance Basic Research, Zhengzhou Tobacco Research Institute, China National Tobacco Corporation, Zhengzhou, 450001 China. ISNI: 0000 0004 0386 2036. GRID: grid.452261.6 FAU - Wu, Lei AU - Wu L AD - 2Key Laboratory in Flavor & Fragrance Basic Research, Zhengzhou Tobacco Research Institute, China National Tobacco Corporation, Zhengzhou, 450001 China. ISNI: 0000 0004 0386 2036. GRID: grid.452261.6 FAU - Zhang, Jianxun AU - Zhang J AD - 2Key Laboratory in Flavor & Fragrance Basic Research, Zhengzhou Tobacco Research Institute, China National Tobacco Corporation, Zhengzhou, 450001 China. ISNI: 0000 0004 0386 2036. GRID: grid.452261.6 FAU - Peng, Guixin AU - Peng G AD - Technology Center, China Tobacco Henan Industrial Co., Ltd., Zhengzhou, 450001 China. FAU - Su, Yue AU - Su Y AD - 1Center for Chinese Medicine Therapy and Systems Biology, Shanghai University of Traditional Chinese Medicine, Shanghai, 201203 China. ISNI: 0000 0001 2372 7462. GRID: grid.412540.6 LA - eng PT - Journal Article DEP - 20191031 PL - Switzerland TA - BMC Chem JT - BMC chemistry JID - 101741142 PMC - PMC6823938 OTO - NOTNLM OT - Carbon fiber ionization mass spectrometry OT - In situ analysis OT - Jujube OT - Volatile COIS- Competing interestsThe authors declare that they have no competing interests. EDAT- 2019/11/07 06:00 MHDA- 2019/11/07 06:01 PMCR- 2019/10/31 CRDT- 2019/11/08 06:00 PHST- 2019/06/16 00:00 [received] PHST- 2019/10/15 00:00 [accepted] PHST- 2019/11/08 06:00 [entrez] PHST- 2019/11/07 06:00 [pubmed] PHST- 2019/11/07 06:01 [medline] PHST- 2019/10/31 00:00 [pmc-release] AID - 641 [pii] AID - 10.1186/s13065-019-0641-4 [doi] PST - epublish SO - BMC Chem. 2019 Oct 31;13(1):125. doi: 10.1186/s13065-019-0641-4. eCollection 2019 Dec.