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C-27 Apocarotenoids in the flowers of Boronia megastigma (Nees)

journal contribution
posted on 2023-05-16, 13:23 authored by Cooper, C, Noel DaviesNoel Davies, Robert MenaryRobert Menary
Five C-27 apocarotenoids were detected in acetone extracts of the flowers of Boronia megastigma (Nees) using HPLC with UV-vis photodiode array and MS detection. Comparison of methylated and unmethylated extracts aided identification when considered with the UV-vis and MS data. The five apocarotenoids identified here were hydroxy-apo-10′-carotenoic acid (1), methyl hydroxy-apo-10′-carotenoate (2), apo-10′-carotenoic acid (3), apo-10′-carotenal (4), and methyl apo-10′-carotenoate (5). The data obtained was not sufficient to allow the specific isomeric forms to be unequivocally identified. The results further support speculation that the C-13 norisoprenoids found in boronia are derived from C-40 carotenoids. Possible parent molecules of β-ionone, an important component of boronia extract, were identified. An understanding of C-13 norisoprenoid biosynthesis may assist in the selection and postharvest processing of boronia flowers for flavor and fragrance applications.

History

Publication title

Journal of Agricultural and Food Chemistry

Volume

51

Issue

8

Pagination

2384-2389

ISSN

0021-8561

Department/School

Tasmanian Institute of Agriculture (TIA)

Publisher

American Chemical Society

Place of publication

Washington DC,USA

Repository Status

  • Restricted

Socio-economic Objectives

Horticultural crops not elsewhere classified

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