Volatile chemicals identified in extracts from newly hybrid citrus, dekopon (Shiranuhi mandarin Suppl. J.).
Extracts from the peel and flesh of a citrus fruit, dekopon (Shiranuhi mandarin Suppl. J.), were obtained under reduced pressure followed by dichloromethane extraction. A total of 127 volatile chemicals were identified in the extracts using gas chromatography (GC) and gas chromatography-mass spectrometry (GC-MS). They included 11 monoterpenes, 32 monoterpenoids, 9 sesquiterpenes, 5 sesquiterpenoids, 20 aliphatic alcohols, 14 aliphatic esters, 15 aliphatic aldehydes and ketones, 7 aliphatic acids, and 10 miscellaneous compounds. The major volatile constituents of the extract from the peel were d-limonene (2380.33 mg/kg), myrcene (36.54 mg/kg), bisabolene (30.03 mg/kg), sabinene (21.12 mg/kg), trans-beta-ocimene (16.96 mg/kg), valencene (12.84 mg/kg), decanal (8.14 mg/kg), beta-phellandrene (4.53 mg/kg), citronellol (4.51 mg/kg), 4-terpineol (4.50 mg/kg), linalool (4.13 mg/kg), and citronellyl acetate (3.63 mg/kg). The major volatile constituents of the extract from the flesh were ethyl acetate (21.54 mg/kg), acetoin (7.23 mg/kg), 3-methylbutanol (2.79 mg/kg), p-mentha-cis-2,8-dien-1-ol (1.01 mg/kg), 3-methylbutanoic acid (0.95 mg/kg), isobutanol (0.59 mg/kg), trans-isopiperitenol (0.58 mg/kg), p-mentha-trans-2,8-dien-1-ol, and trans-carveol (0.44 mg/kg). Compositions of volatile chemicals in peel and flesh extract were considerably different: the peel extract was rich in terpenes, whereas the flesh extract was rich in aliphatic compounds.
Department of Environmental Toxicology, University of California, Davis, California 95616, USA.
Katumi
K
Umano
Yukio
Y
Hagi
Takayuki
T
Shibamoto
D000438:Alcohols / Q000032:analysis; D000447:Aldehydes / Q000032:analysis; D002957:Citrus / Q000737:chemistry*; D004952:Esters / Q000032:analysis; D005227:Fatty Acids / Q000032:analysis; D005638:Fruit / Q000737:chemistry*; D008401:Gas Chromatography-Mass Spectrometry; D006824:Hybridization, Genetic; D007659:Ketones / Q000032:analysis; D008752:Methylene Chloride; D010936:Plant Extracts / Q000737:chemistry*; D013729:Terpenes / Q000032:analysis; D014835:Volatilization
D000438:Alcohols; D000447:Aldehydes; D004952:Esters; D005227:Fatty Acids; D007659:Ketones; D010936:Plant Extracts; D013729:Terpenes; D008752:Methylene Chloride