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Variation in physicochemical and sensory quality of sour orange (Citrus aurantium L.) marmalade from the Cap Bon region in North-East Tunisia

Published online by Cambridge University Press:  22 September 2011

Inès Ellouze ,
Hajer Debbabi ,
Ameni Belkacem  and
Boulbeba Rekik
Inès Ellouze
Affiliation:
Lab. Rech. Econ., Sci. Technol. Agro-Alim., Inst. Natl. Agron. Tunisie, 43, Av. Charles Nicolle, 1082, Tunis, Tunisie
Hajer Debbabi*
Affiliation:
Lab. Rech. Econ., Sci. Technol. Agro-Alim., Inst. Natl. Agron. Tunisie, 43, Av. Charles Nicolle, 1082, Tunis, Tunisie
Ameni Belkacem
Affiliation:
Lab. Rech. Econ., Sci. Technol. Agro-Alim., Inst. Natl. Agron. Tunisie, 43, Av. Charles Nicolle, 1082, Tunis, Tunisie
Boulbeba Rekik
Affiliation:
Dép. Prod. Anim., Ecole Sup. Agric. Mateur, 7030 Mateur, Tunisie
*
∗ Correspondence and reprints
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Abstract

Introduction. Citrus aurantium L. sour oranges are poorly exploited in Tunisia, although the Tunisian Cap Bon is one of the major areas of production of sour orange trees. Our study aimed at determining the effect of the geographic origin of the raw material on quality of orange marmalades and consumer acceptance. Materials and methods. Fresh sour oranges were collected from five areas in the Cap Bon region in the North-East of Tunisia for producing marmalades. Physicochemical characterisation of marmalades from the five different origins included the determination of soluble solids, total and volatile acidity, the measurement of reducing sugars, and measurement of colour. Sensory panels from Tunisia, Algeria and Europe revealed the marmalades’ sensory profiles. The sensory panels then attributed preference and acceptance ranks for the five marmalades. Results and discussion. The analyses highlighted an effect of the geographic origin of the raw material on the physicochemical quality. The most suitable geographic conditions seem to be climatic and edaphic criteria. Assessors from various nationalities revealed different sensory profiles depending on the consumer’s nationality and fruit production region. In addition, Tunisian consumers are less likely to be marmalade buyers than European and Algerian consumers.

Keywords

TunisiaCitrus aurantiumfruitsprovenance trialsjamsproximate compositionorganoleptic analysisconsumersTunisieCitrus aurantiumfruitsessai de provenancesconfiturecomposition globaleanalyse organoleptiqueconsommateurTúnezCitrus aurantiumfrutasensayos de procedenciasmermeladascomposición aproximadaanálisis organolépticoconsumidores
Type
Technical paper
Information
Fruits , Volume 66 , Issue 5 , September 2011 , pp. 315 - 325
Copyright
© 2011 Cirad/EDP Sciences

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