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Antioxidants Activity and Color Evaluation of Date Fruit of Selected Cultivars Commercially Available in the United States


Affiliations
1 King Abdulaziz City for Science and Technology, Life Science and Environment Research Institute, National Center for Agricultural Technology, P.O. Box 6086, Riyadh 11442, Saudi Arabia
2 Food Science Consulting,Windsor, ON, N9H 2M4, Canada
3 Department of Food Science and Technology, Guru Nanak Dev University, Amritsar, India
 

Dates (Phoenix dactylifera L.) are nutrient-rich fruit consumed throughout the world, either directly or in several food products. Six commercially available date cultivars in the US were analyzed for total phenolics, antioxidant activity using ABTS, DPPH, FRAP, and ORAC assays, and instrumental color. Total phenolics content varied from33 to 125mg GAE/100 g dry weight, with the highest in Barni (Saudi Arabia). Antioxidant values as determined by the ABTS in Deglet Nour (Algeria), Deglet Nour (California), Deglet Noor (Tunisia), Shahia (Tunisia), Barni (Saudi Arabia), andKhudri (Saudi Arabia)were 1300, 1047, 796, 452, 776, and 341 μmol TE/g dry weight, respectively. Antioxidative properties as measure by DPPH, FRAP, and ORAC varied from 3.27 to 3.54, 3.29 to 5.22, and 189 to 243 μmol TE/g dry basis, respectively. Fruit and pulp color of Deglet Nour (Algeria) was lighter whereas pulp of Barni (Saudi Arabia) was the darkest. Antioxidant values varied with different techniques used and also followed a different pattern than that of phenolics content.
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  • Antioxidants Activity and Color Evaluation of Date Fruit of Selected Cultivars Commercially Available in the United States

Abstract Views: 186  |  PDF Views: 61

Authors

FahadMohammed Al-Jasass
King Abdulaziz City for Science and Technology, Life Science and Environment Research Institute, National Center for Agricultural Technology, P.O. Box 6086, Riyadh 11442, Saudi Arabia
Muhammad Siddiq
Food Science Consulting,Windsor, ON, N9H 2M4, Canada
Dalbir S. Sogi
Department of Food Science and Technology, Guru Nanak Dev University, Amritsar, India

Abstract


Dates (Phoenix dactylifera L.) are nutrient-rich fruit consumed throughout the world, either directly or in several food products. Six commercially available date cultivars in the US were analyzed for total phenolics, antioxidant activity using ABTS, DPPH, FRAP, and ORAC assays, and instrumental color. Total phenolics content varied from33 to 125mg GAE/100 g dry weight, with the highest in Barni (Saudi Arabia). Antioxidant values as determined by the ABTS in Deglet Nour (Algeria), Deglet Nour (California), Deglet Noor (Tunisia), Shahia (Tunisia), Barni (Saudi Arabia), andKhudri (Saudi Arabia)were 1300, 1047, 796, 452, 776, and 341 μmol TE/g dry weight, respectively. Antioxidative properties as measure by DPPH, FRAP, and ORAC varied from 3.27 to 3.54, 3.29 to 5.22, and 189 to 243 μmol TE/g dry basis, respectively. Fruit and pulp color of Deglet Nour (Algeria) was lighter whereas pulp of Barni (Saudi Arabia) was the darkest. Antioxidant values varied with different techniques used and also followed a different pattern than that of phenolics content.