Characterization and sensory analysis of some Tunisian date cultivars consumed at early maturity stage

In Tunisia, more than 200 common date palm cultivars (Phoenix dactylifera L.) are currently listed. Some of these cultivars are consumed at early maturity stage (Khalal) and are generally undervalued. The objective of this study was a physicochemical and sensorial characterization of 11 common date fruit cultivars that could be consumed at the Khalal stage. The studied cultivars presented different physical characteristics expressed on size, weight, skin color and firmness. All cultivars visually presented yellowish skin color confirmed by L* (55.39-62.12) and a* (5.90-10.92) parameters. Firmness values are ranged from 2.73 to 6.62 N. Moisture content, total soluble solids and titratable acidity were determined. Sensorial characterization based on visual characteristics and taste (astringency, sugar content and texture), showed that 'Bser Hlou', 'Arichti', 'Hlawa Bidha' and 'Lemsi' were the most appreciated cultivars. Results showed also that some of the studied cultivars have high contents of total phenols and tannins and high antioxidant activity.