Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
7583945 | Food Chemistry | 2019 | 39 Pages |
Abstract
Volatile profiles of jujube fruits at different ripening stages were characterized by GC-MS and E-nose. Changes in the possible precursors of volatile components were also investigated. Four ripening stages were established: GM, green maturity; YM, yellow maturity; HRM, half-red maturity; RM, red maturity. Fruit maturity showed significant effect on the volatile components and their precursors. (E)-2-hexenal was the most abundant component which showed rising trend from 169.2â¯Î¼g/kg (GM) to 733.4â¯Î¼g/kg (RM). Glucose and fructose showed a decreasing tendency during ripening. As the important precursors of jujube flavor, seven fatty acids were identified, the predominant ones were C16:0, C16:1n7, C18:1n9c and C18:2n6c; twenty-six free amino acids were quantified, in which l-AspNH2 and l-Pro were the abundant components. Owing to the highest content of total aldehydes (59.33%) and the strongest responses of E-nose, jujubes at HRM stage showed superior overall flavor quality among all the samples.
Keywords
Hexanal (PubChem CID: 6184)(E)-2-hexenal (PubChem CID: 5281168)polydimethylsiloxane-divinylbenzenePDMS/DVB2-Nonanone (PubChem CID: 13187)Benzyl alcohol (PubChem CID: 244)FAAOctanoic acid (PubChem CID: 379)Hexanoic acid (PubChem CID: 8892)HRMHS-SPMEGC–MSPCAFree amino acidEthanol (PubChem CID: 702)Benzaldehyde (PubChem CID: 240)E-NosePrincipal component analysisJujubeRipeningAromagas chromatography and mass spectrometry
Related Topics
Physical Sciences and Engineering
Chemistry
Analytical Chemistry
Authors
Jianxin Song, Jinfeng Bi, Qinqin Chen, Xinye Wu, Ying Lyu, Xianjun Meng,