| Title: | HS-SPME-GC-MS and Electronic Nose Reveal Differences in the Volatile Profiles of Hedychium Flowers |
| Author(s): | Zhou Y; Abbas F; Wang Z; Yu Y; Yue Y; Li X; Yu R; Fan Y; |
| Address: | "The Research Center for Ornamental Plants, College of Forestry and Landscape Architecture, South China Agricultural University, Guangzhou 510642, China. College of Life Sciences, South China Agricultural University, Guangzhou 510642, China. Guangdong Key Laboratory for Innovative Development and Utilization of Forest Plant Germplasm, South China Agricultural University, Guangzhou 510642, China" |
| DOI: | 10.3390/molecules26175425 |
| ISSN/ISBN: | 1420-3049 (Electronic) 1420-3049 (Linking) |
| Abstract: | "Floral fragrance is one of the most important characteristics of ornamental plants and plays a pivotal role in plant lifespan such as pollinator attraction, pest repelling, and protection against abiotic and biotic stresses. However, the precise determination of floral fragrance is limited. In the present study, the floral volatile compounds of six Hedychium accessions exhibiting from faint to highly fragrant were comparatively analyzed via gas chromatography-mass spectrometry (GC-MS) and Electronic nose (E-nose). A total of 42 volatile compounds were identified through GC-MS analysis, including monoterpenoids (18 compounds), sesquiterpenoids (12), benzenoids/phenylpropanoids (8), fatty acid derivatives (2), and others (2). In Hedychium coronarium 'ZS', H. forrestii 'Gaoling', H. 'Jin', H. 'Caixia', and H. 'Zhaoxia', monoterpenoids were abundant, while sesquiterpenoids were found in large quantities in H. coccineum 'KMH'. Hierarchical clustering analysis (HCA) divided the 42 volatile compounds into four different groups (I, II, III, IV), and Spearman correlation analysis showed these compounds to have different degrees of correlation. The E-nose was able to group the different accessions in the principal component analysis (PCA) corresponding to scent intensity. Furthermore, the pattern-recognition findings confirmed that the E-nose data validated the GC-MS results. The partial least squares (PLS) analysis between floral volatile compounds and sensors suggested that specific sensors were highly sensitive to terpenoids. In short, the E-nose is proficient in discriminating Hedychium accessions of different volatile profiles in both quantitative and qualitative aspects, offering an accurate and rapid reference technique for future applications" |
| Keywords: | Cyclohexane Monoterpenes/analysis Electronic Nose Fatty Acids/analysis Flowers/*chemistry Gas Chromatography-Mass Spectrometry Monoterpenes/analysis Odorants/*analysis Perfume/*chemistry Plant Extracts/*analysis Principal Component Analysis Sesquiterpenes; |
| Notes: | "MedlineZhou, Yiwei Abbas, Farhat Wang, Zhidong Yu, Yunyi Yue, Yuechong Li, Xinyue Yu, Rangcai Fan, Yanping eng 31770738, 31870690/National Natural Science Foundation of China/ 2020B020220007/Key-Areas Research and Development Program of Guangdong Province/ 201903010054/People's Livelihood Science and Technology Projects of Guangzhou/ Switzerland 2021/09/11 Molecules. 2021 Sep 6; 26(17):5425. doi: 10.3390/molecules26175425" |
