Total polyphenol content and radical scavenging activity of functional yogurt enriched with dates

Arfaoui L. (2020): Total polyphenol content and radical scavenging activity of functional yogurt enriched with dates. Czech J. Food Sci., 38: 287–292.

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Both yogurt and dates are functional foods known for their valuable nutrients and health benefits. Therefore, this study was conducted to produce two types of date-enriched yogurts (20% wt/wt) to enhance their nutritive value and health benefits. While yogurt A was made with dates blended with milk, yogurt B was produced using small pieces of dates that were added to milk before fermentation. Both date-enriched yogurts were assessed for their physicochemical composition, total polyphenol content (TPC) and radical scavenging activity (RSA). The results showed that the addition of dates significantly enhanced carbohydrate, mineral and total solids contents of yogurts A and B (P < 0.05). Furthermore, dates significantly enhanced the TPC (34 and 37 mg GAE 100 g–1 for yogurt A and B, respectively) and the RSA (51% for yogurt A versus 57% for yogurt B) of date-enriched yogurts especially when dates were added as small pieces. During cold storage, both TPC and RSA decreased in all yogurt samples; however, they were maintained higher in date-enriched yogurts.

Al-Farsi M.A., Lee C.Y. (2008): Nutritional and functional properties of dates: A review. Critical Reviews in Food Science and Nutrition, 48: 877–887.
Al-Shahib W., Marshall R.J. (2003): The fruit of the date palm: Its possible use as the best food for the future? International Journal of Food Sciences and Nutrition, 54: 247–259.
Arts M.J., Haenen G.R., Wilms L.C., Beetstra S.A., Heijnen C.G., Voss H.P., Bast A. (2002): Interactions between flavonoids and proteins: Effect on the total antioxidant capacity. Journal of Agricultural and Food Chemistry, 50: 1184–1187.
Brand-Williams W., Cuvelier M.E., Berset C. (1995): Use of a free radical method to evaluate antioxidant activity. LWT – Food Science and Technology, 28: 25–30.
Duncan M.J., Kline C.E., Vandelanotte C., Sargent C., Rogers N.L., Di Milia L. (2014): Cross-sectional associations between multiple lifestyle behaviors and health-related quality of life in the 10 000 Steps cohort. PloS One, 9: e94184.
El-Din H.M.F., Haggag H., Farahat A., El-Said M. (2017): Production of healthy fermented milk supplemented with natural sources of antioxidants. International Journal of Dairy Science, 12: 52–63.
Jobstl E., Howse J.R., Fairclough J.P., Williamson M.P. (2006): Noncovalent cross-linking of casein by epigallocatechin gallate characterized by single molecule force microscopy. Journal of Agricultural and Food Chemistry, 54: 4077–4081.
Lopez V., Lindsay R.C. (1993): Metabolic conjugates as precursors for characterizing flavor compounds in ruminant milks. Journal of Agricultural and Food Chemistry, 41: 446–454.
Nguyen L., Hwang E.S. (2016): Quality characteristics and antioxidant activity of yogurt supplemented with aronia (Aronia melanocarpa) juice. Preventive Nutrition and Food Science, 21: 330.
Pandey K.B., Rizvi S.I. (2009): Plant polyphenols as dietary antioxidants in human health and disease. Oxidative Medidicine and Celluar Longevity, 2: 270–278.
Pei R., Martin D.A., DiMarco D.M., Bolling B.W. (2017): Evidence for the effects of yogurt on gut health and obesity. Critical Reviews in Food Science and Nutrition, 57: 1569–1583.
Saleh E.A., Tawfik M.S., Abu-Tarboush H.M. (2011): Phenolic contents and antioxidant activity of various date palm (Phoenix dactylifera L.) fruits from Saudi Arabia. Food and Nutrition Sciences, 2: 1134.
Sánchez-Bravo P., Zapata P., Martínez-Esplá A., Carbonell-Barrachina Á., Sendra E. (2018): Antioxidant and anthocyanin content in fermented milks with sweet cherry is affected by the starter culture and the ripening stage of the cherry. Beverages, 4: 57.
Trigueros L., Wojdyło A., Sendra E. (2014): Antioxidant activity and protein–polyphenol interactions in a pomegranate (Punica granatum L.) yogurt. Journal of Agricultural and Food Chemistry, 62: 6417–6425.
Tsao R. (2010): Chemistry and biochemistry of dietary polyphenols. Nutrients, 2: 1231–1246.
Yasin B.R., El-Fawal H.A.N., Mousa S.A. (2015): Date (Phoenix dactylifera) polyphenolics and other bioactive compounds: A traditional islamic remedy’s potential in prevention of cell damage, cancer therapeutics and beyond. International Journal of Molecular Sciences, 16: 30075–30090.
Yildirim-Elikoglu S., Erdem Y.K. (2018): Interactions between milk proteins and polyphenols: Binding mechanisms, related changes, and the future trends in the dairy industry. Food Reviews International, 34: 665–697.
Yuksel Z., Avci E., Erdem Y.K. (2010): Characterization of binding interactions between green tea flavanoids and milk proteins. Food Chemistry, 121: 450–456.
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