Riboflavin and lumichrome in Dalmatian sage honey and other unifloral honeys determined by LC–DAD technique

► Detection of riboflavin and its metabolite lumichrome in unifloral honey. ► Quantisation by validated LC–DAD method. ► Riboflavin content up to 6.1mg/kg. ► High levels of lumichrome in Dalmatian sage (Salvia officinalis L.) honey. Riboflavin (vitamin B2) and its metabolite lumichrome were quantifi...

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Bibliographic Details
Published in:Food chemistry 2012-12, Vol.135 (3), p.1985-1990
Main Authors: Tuberoso, Carlo Ignazio Giovanni, Jerković, Igor, Bifulco, Ersilia, Marijanovic, Zvonimir, Congiu, Francesca, Bubalo, Dragan
Format: Article
Language:English
Subjects:
Animals
Aroma and flavouring agent industries
Bees - metabolism
Biological and medical sciences
Chromatography, High Pressure Liquid - instrumentation
Chromatography, High Pressure Liquid - methods
Confectionery products and chocolate industries, honey
Flavins - analysis
Flowers - chemistry
Food industries
Fundamental and applied biological sciences. Psychology
Honey - analysis
LC–DAD
Riboflavin
Riboflavin - analysis
Salvia officinalis - chemistry
Salvia officinalis L. honey
Umichrome
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Summary:► Detection of riboflavin and its metabolite lumichrome in unifloral honey. ► Quantisation by validated LC–DAD method. ► Riboflavin content up to 6.1mg/kg. ► High levels of lumichrome in Dalmatian sage (Salvia officinalis L.) honey. Riboflavin (vitamin B2) and its metabolite lumichrome were quantified in 117 samples from 11 unifloral honeys types (Arbutus unedo L., Asphodelus microcarpus Salzm. et Viv., Citrus spp., Eucalyptus spp., Hedysarum coronarium L., Castanea sativa L. honeydew, Mentha spp., Paliurus spina-christi., Salix spp., Salvia officinalis L., Satureja spp.). The quantification of these two compounds was performed by LC–DAD method which does not require sample purification. The proposed method in our study has low limits of detection and quantification, very good linearity in a large concentration range and very good precision. It allows simultaneous determination of 5-hydroxymethylfurfural (HMF) and known chemical biomarkers of unifloral honeys such as abscisic acid diastereomers, homogentisic acid, methyl syringate and kynurenic acid. No statistical correlation was observed between riboflavin and lumichrome content. Although, the concentration of vitamin B2 in honey may be too low (
ISSN:0308-8146
1873-7072
DOI:10.1016/j.foodchem.2012.06.096