Chemical Diversity of Citrus Leaf Essential Oils

Chem Biodivers. 2022 Jan 21. doi: 10.1002/cbdv.202100963. Online ahead of print.ABSTRACTThe essential oils from leaves of 20 commercial citrus accessions maintained by the University of California, Riverside Givaudan Citrus Variety Collection and selected on the basis of their odour profile were analysed by GCMS/FID. The main components were quantified while the semi-quantitative percentage composition data was compiled with data from other publications for sample visualization, classification and comparison with leaf oils from other citrus accessions. Some compositional clusters aligned closely with the taxonomic clades of sweet orange, bitter orange, and C. hystrix while other clades like the mandarins and lemons showed distinct chemical sub-groups. Characteristic compounds for the clusters included linalyl acetate and linalool (bitter orange leaf), sabinene (sweet orange leaf), methyl N-methyl anthranilate (mandarin leaf), γ-terpinene (yuzu leaf), citronellal (C. hystrix), limonene, citronellal and citral (lemons and citrons). A chemometric approach combined with t-SNE cluster plots can be more informative than taxonomic assignments when considering flavour and fragrance characteristics.PMID:35061334 | DOI:10.1002/cbdv.202100963
Source: Chemistry and Biodiversity - Category: Biochemistry Authors: Source Type: research