Naslov
The volatile profiles of a rare apple (Malus domestica Borkh.) honey: shikimic acid-pathway derivatives, terpenes, and others

Autori
Kus, P. M. ; Jerković, I. ; Tuberoso, C. I. G. ; Šarolić, M.

Izvornik
Chemistry & biodiversity (1612-1872) 10 (2013); 1638-1652

Vrsta, podvrsta i kategorija rada
Radovi u časopisima, članak, znanstveni

Ključne riječi
Malus domestica honey ; Headspace-solid-phase microextraction (HS-SPME) ; Ultrasonic solvent extraction (USE) ; Shikimic acid-pathway derivatives ; Terpenes

Sažetak
The volatile profiles of rare Malus domesticaBorkh. honey were investigated for the first time. Two representative samples from Poland (sampleI) and Spain (sampleII) were selected by pollen analysis (44-45% of Malus spp. pollen) and investigated by GC/FID/MS after headspace solid-phase microextraction (HS-SPME) and ultrasonic solvent extraction (USE). The apple honey is characterized by high percentage of shikimic acid-pathway derivatives, as well as terpenes, norisoprenoids, and some other compounds such as coumaran and methyl 1H-indole-3-acetate. The main compounds of the honey headspace were (sampleI ; sampleII): benzaldehyde (9.4% ; 32.1%), benzyl alcohol (0.3% ; 14.4%), hotrienol (26.0%, 6.2%), and lilac aldehyde isomers (26.3% ; 1.7%), but only Spanish sample contained car-2-en-4-one (10.2%). CH2Cl2 and pentane/Et2O 1:2 (v/v) were used for USE. The most relevant compounds identified in the extracts were: benzaldehyde (0.9-3.9%), benzoic acid (2.0-11.2%), terpendiol I (0.3-7.4%), coumaran (0.0-2.8%), 2-phenylacetic acid (2.0-26.4%), methyl syringate (3.9-13.1%), vomifoliol (5.0-31.8%), and methyl 1H-indole-3-acetate (1.9-10.2%). Apple honey contained also benzyl alcohol, 2-phenylethanol, (E)-cinnamaldehyde, (E)-cinnamyl alcohol, eugenol, vanillin, and linalool that have been found previously in apple flowers, thus disclosing similarity of both volatile profiles.

Izvorni jezik
Engleski

Znanstvena područja
Kemija

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