title: Characterization of the Aldehydes and Their Transformations Induced by UV Irradiation and Air Exposure of White Guanxi Honey Pummelo (Citrus Grandis (L.) Osbeck) Essential Oil.
abstract: Aldehydes are key aroma contributors of citrus essential oils. White Guanxi honey pummelo essential oil (WPEO) was investigated in its aldehyde constituents and their transformations induced by UV irradiation and air exposure by GC-MS, GC-O, and sensory evaluation. Nine aldehydes, i.e., octanal, nonanal, citronellal, decanal, trans-citral, cis-citral, perilla aldehyde, dodecanal, and dodecenal, were detected in WPEO. After treatment, the content of citronellal increased, but the concentrations of other aldehydes decreased. The aliphatic aldehydes were transformed to organic acids. Citral was transformed to neric acid, geranic acid, and cyclocitral. Aldehyde transformation caused a remarkable decrease in the minty, herbaceous, and lemon notes of WPEO. In fresh WPEO, β-myrcene, d-limonene, octanal, decanal, cis-citral, trans-citral, and dodecenal had the highest odor dilution folds. After the treatment, the dilution folds of decanal, cis-citral, trans-citral, and dodecenal decreased dramatically. This result provides information for the production and storage of aldehyde-containing products.
authors.affiliation: College of Food and Biology Engineering, Jimei University , Xiamen 361021, China.|Fujian Provincial Key Laboratory of Food Microbiology and Enzyme Engineering , Xiamen 361021, China.|Research Center of Food Biotechnology of Xiamen City , Xiamen 361021, China.
authors.forename: Li Jun
authors.initials: LJ
authors.lastname: Li
authors.affiliation: College of Food and Biology Engineering, Jimei University , Xiamen 361021, China.
authors.forename: Peng
authors.initials: P
authors.lastname: Hong
authors.affiliation: College of Food and Biology Engineering, Jimei University , Xiamen 361021, China.|Department of Food, Nutrition and Packaging Sciences, Clemson University , Clemson, South Carolina 29634, United States.
authors.forename: Feng
authors.initials: F
authors.lastname: Chen
authors.affiliation: College of Food and Biology Engineering, Jimei University , Xiamen 361021, China.
authors.forename: Hao
authors.initials: H
authors.lastname: Sun
authors.affiliation: College of Food and Biology Engineering, Jimei University , Xiamen 361021, China.|Fujian Provincial Key Laboratory of Food Microbiology and Enzyme Engineering , Xiamen 361021, China.|Research Center of Food Biotechnology of Xiamen City , Xiamen 361021, China.
authors.forename: Yuan Fan
authors.initials: YF
authors.lastname: Yang
authors.affiliation: College of Food and Biology Engineering, Jimei University , Xiamen 361021, China.
authors.forename: Xiang
authors.initials: X
authors.lastname: Yu
authors.affiliation: College of Food and Biology Engineering, Jimei University , Xiamen 361021, China.|Fujian Provincial Key Laboratory of Food Microbiology and Enzyme Engineering , Xiamen 361021, China.|Research Center of Food Biotechnology of Xiamen City , Xiamen 361021, China.
authors.forename: Gao Ling
authors.initials: GL
authors.lastname: Huang
authors.affiliation: Institute of Apicultural Reaseach, CAAS, Beijing 100093, China.
authors.forename: Li Ming
authors.initials: LM
authors.lastname: Wu
authors.affiliation: College of Food and Biology Engineering, Jimei University , Xiamen 361021, China.|Fujian Provincial Key Laboratory of Food Microbiology and Enzyme Engineering , Xiamen 361021, China.|Research Center of Food Biotechnology of Xiamen City , Xiamen 361021, China.
authors.forename: Hui
authors.initials: H
authors.lastname: Ni
mesh_terms: D000328:Adult; D000447:Aldehydes / Q000737:chemistry* / Q000528:radiation effects; D002957:Citrus / Q000737:chemistry* / Q000528:radiation effects; D005260:Female; D008401:Gas Chromatography-Mass Spectrometry; D006801:Humans; D008297:Male; D009822:Oils, Volatile / Q000737:chemistry* / Q000528:radiation effects; D010936:Plant Extracts / Q000737:chemistry* / Q000528:radiation effects; D014466:Ultraviolet Rays; D055815:Young Adult
chemical_list: D000447:Aldehydes; D009822:Oils, Volatile; D010936:Plant Extracts
keywords: GC-O; air exposure; aldehyde; pummelo essential oil; transformation; ultraviolet (UV) irradiation