Naslov
Characterization of Satsuma mandarin (Citrus unshiu Marc.) nectar-to-honey transformation pathway using FTIR-ATR spectroscopy

Autori
Svečnjak, Lidija ; Prđun, Saša ; Rogina, Josip ; Bubalo, Dragan ; Jerković, Igor

Izvornik
Food chemistry (0308-8146) 232 (2017); 286-294

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

Ključne riječi
Citrus unshiu nectar ; honey sac ; honey ; FTIR spectroscopy ; nectar-to-honey transformation pathway ; compositional changes

Sažetak
Samples of Satsuma mandarin (Citrus unshiu Marc.) nectar, honey sac content and honey were analyzed by FTIR-ATR spectroscopy and reference methods. The spectral analysis allowed detection of the major chemical constituents in C. unshiu nectar- to-honey transformation pathway thus providing information on the intensity and location of the compositional changes occurring during this process. The preliminary results showed that in average more than one-third of sugar-related nectar-to-honey conversion takes place directly in the honey sac ; the average sugar content (w/w) was 17.93% (nectar), 47.03% (honey sac) and 79.63% (honey). FTIR-ATR results showed great spectral similarity of analyzed honey samples and small degree variations in both sugar and water content in nectar samples. The spectral data revealed distinctive differences in the chemical composition of individual honey sac contents with the most intensive and complex absorption envelope in the spectral region between 1175 and 950 cm-1 (glucose, fructose and sucrose absorption bands).

Izvorni jezik
Engleski

Znanstvena područja
Kemija, Poljoprivreda (agronomija)

POVEZANOST RADA