| Title: | Analysis of aroma-active compounds in three sweet osmanthus (Osmanthus fragrans) cultivars by GC-olfactometry and GC-MS |
| Author(s): | Cai X; Mai RZ; Zou JJ; Zhang HY; Zeng XL; Zheng RR; Wang CY; |
| Address: | "Key Laboratory of Horticultural Plant Biology, Ministry of Education, Huazhong Agricultural University, Wuhan 430070, China; Guangxi Communications Investment Group Yulin Expressway Operation Co., Ltd., Yulin 537000, China" |
| ISSN/ISBN: | 1862-1783 (Electronic) 1673-1581 (Print) 1673-1581 (Linking) |
| Abstract: | "OBJECTIVE: Aroma is the core factor in aromatherapy. Sensory evaluation of aromas differed among three sweet osmanthus (Osmanthus fragrans) cultivar groups. The purpose of this study was to investigate the aroma-active compounds responsible for these differences. METHODS: Gas chromatography-olfactometry (GC-O) and GC-mass spectrometry (GC-MS) were used to analyze the aroma-active compounds and volatiles of creamy-white ('Houban Yingui', HBYG), yellow ('Liuye Jingui', LYJG), and orange ('Gecheng Dangui', GCDG) cultivars. RESULTS: Seventeen aroma-active compounds were detected among 54 volatiles. trans-beta-Ocimene, trans-beta-ionone, and linalool, which were major volatiles, were identified as aroma-active, while cis-3-hexenyl butanoate, gamma-terpinene, and hexyl butanoate were also aroma-active compounds, although their contents were low. Analysis of the odors was based on the sum of the modified frequency (MF) values of aroma-active compounds in different odor groups. HBYG contained more herb odors, contributed by cis-beta-ocimene and trans-beta-ocimene, while LYJG had more woody/violet/fruity odors released by trans-beta-ionone, alpha-ionone, and hexyl butanoate. In GCDG, the more floral odors were the result of cis-linalool oxide, trans-linalool oxide, and linalool. CONCLUSIONS: Aroma-active compounds were not necessarily only the major volatiles: some volatiles with low content also contributed to aroma. The aroma differences among the three cultivars resulted from variation in the content of different odor groups and in the intensities of aroma-active compounds" |
| Keywords: | Acyclic Monoterpenes Alkenes/analysis Color Gas Chromatography-Mass Spectrometry/*methods Monoterpenes/analysis Norisoprenoids/analysis Odorants Oleaceae/*chemistry/growth & development Volatile Organic Compounds/*analysis Aroma Gas chromatography-mass sp; |
| Notes: | "MedlineCai, Xuan Mai, Rong-zhang Zou, Jing-jing Zhang, Hong-yan Zeng, Xiang-ling Zheng, Ri-ru Wang, Cai-yun eng Research Support, Non-U.S. Gov't China 2014/07/09 J Zhejiang Univ Sci B. 2014 Jul; 15(7):638-48. doi: 10.1631/jzus.B1400058" |
