title: Characteristic aroma-active compounds of floral scent in situ from Barringtonia racemosa and their dynamic emission rates.
abstract: Barringtonia racemosa is a nocturnal flowering plant. Information on its floral volatiles and the dynamic emission profiles was very limited. In this study, the floral volatiles of B. racemosa were monitored hourly during its florescence via detached and in situ collection for the first time. The dynamic odor activity value (OAV) was calculated to elucidate the active aroma components of floral scent. Results of compositional analyses showed that the predominant floral volatiles were linalool and phenylacetaldehyde. Their emission started around 8:00 p.m., and the peak emissions were 20541 and 18234 ng h(-1) flower(-1), respectively, during 10:00 p.m.-2:00 a.m. Results from dynamic OAV profiling revealed that linalool (409 min(-1)) and phenylacetaldehyde (547 min(-1)) had higher OAVs than other components (<10 min(-1)), indicating that linalool and phenylacetaldehyde contributed mainly to the floral scent with a strong, sweet, and pleasant aroma.
authors.affiliation: School of Forest, Resource Conservation, National Taiwan University , Taipei 10617, Taiwan.
authors.forename: Chun-Ya
authors.initials: CY
authors.lastname: Lin
authors.forename: Yu-Han
authors.initials: YH
authors.lastname: Chen
authors.forename: Tzu-Cheng
authors.initials: TC
authors.lastname: Chang
authors.forename: Ying-Ju
authors.initials: YJ
authors.lastname: Chen
authors.forename: Sen-Sung
authors.initials: SS
authors.lastname: Cheng
authors.forename: Shang-Tzen
authors.initials: ST
authors.lastname: Chang
mesh_terms: D031382:Barringtonia / Q000737:chemistry*; D035264:Flowers / Q000737:chemistry*; D007700:Kinetics; D009812:Odorants / Q000032:analysis*; D055549:Volatile Organic Compounds / Q000737:chemistry*
chemical_list: D055549:Volatile Organic Compounds