Submission
Submit your own article trough this form
Name:
Article Title:
Email:
File:
Review Process
Instructions for Authors
 

   
 
About us

Banat's University of Agricultural Sciences and Veterinary Medicine
"King Michael I of Romania" from Timisoara
   
 
Issues
The archive of articles

2019 Journal of Agroalimentary Processes and Technologies 2019, 25(4)
 
2019 Journal of Agroalimentary Processes and Technologies 2019, 25(3)
 
2019 Journal of Agroalimentary Processes and Technologies 2019, 25(2)
 
2019 Journal of Agroalimentary Processes and Technologies 2019, 25(1)
 
2018 Journal of Agroalimentary Processes and Technologies 2018, 24(4)
 
2018 Journal of Agroalimentary Processes and Technologies 2018, 24(3)
 
2018 Journal of Agroalimentary Processes and Technologies 2018, 24(2)
 
2018 Journal of Agroalimentary Processes and Technologies 2018, 24(1)
 
2017 Journal of Agroalimentary Processes and Technologies 2017, 23(4)
 
2017 Journal of Agroalimentary Processes and Technologies 2017, 23(3)
 
2017 Journal of Agroalimentary Processes and Technologies 2017, 23(2)
 
2017 Journal of Agroalimentary Processes and Technologies 2017, 23(1)
 
2016 Journal of Agroalimentary Processes and Technologies 2016, 22(4)
 
2016 Journal of Agroalimentary Processes and Technologies 2016, 22(3)
 
2016 Journal of Agroalimentary Processes and Technologies 2016, 22(2)
 
2016 Journal of Agroalimentary Processes and Technologies 2016, 22(1)
 
2015 Journal of Agroalimentary Processes and Technologies 2015, 21(4)
 
2015 Journal of Agroalimentary Processes and Technologies 2015, 21(3)
 
2015 Journal of Agroalimentary Processes and Technologies 2015, 21(2)
 
2015 Journal of Agroalimentary Processes and Technologies 2015, 21(1)
 
2014 Journal of Agroalimentary Processes and Technologies 2014, 20(4)
 
2014 Journal of Agroalimentary Processes and Technologies 2014, 20(3)
 
2014 Journal of Agroalimentary Processes and Technologies 2014, 20(2)
 
2014 Journal of Agroalimentary Processes and Technologies 2014, 20(1)
 
2013 Journal of Agroalimentary Processes and Technologies 2013, 19(4)
 
2013 Journal of Agroalimentary Processes and Technologies 2013, 19(3)
 
2013 Journal of Agroalimentary Processes and Technologies 2013, 19(2)
 
2013 Journal of Agroalimentary Processes and Technologies 2013, 19(1)
 
2012 Journal of Agroalimentary Processes and Technologies 2012, 18(4)
 
2012 Journal of Agroalimentary Processes and Technologies 2012, 18(3)
 
2012 Journal of Agroalimentary Processes and Technologies 2012, 18(2)
 
2012 Journal of Agroalimentary Processes and Technologies 2012, 18(1)
 
2011 Journal of Agroalimentary Processes and Technologies 2011, 17(4)
 
2011 Journal of Agroalimentary Processes and Technologies 2011, 17(3)
 
2011 Journal of Agroalimentary Processes and Technologies 2011, 17(2)
 
2011 Journal of Agroalimentary Processes and Technologies 2011, 17(1)
 
2010 Journal of Agroalimentary Processes and Technologies 2010, 16(4)
 
2010 Journal of Agroalimentary Processes and Technologies 2010, 16(3)
 
2010 Journal of Agroalimentary Processes and Technologies 2010, 16(2)
 
2010 Journal of Agroalimentary Processes and Technologies 2010, 16(1)
 
2009 Journal of Agroalimentary Processes and Technologies 2009, 15(4)
 
2009 Journal of Agroalimentary Processes and Technologies 2009, 15(3)
 
2009 Journal of Agroalimentary Processes and Technologies 2009, 15(2)
 
2009 Journal of Agroalimentary Processes and Technologies 2009, 15(1)
 
2008 Journal of Agroalimentary Processes and Technologies 2008, 14(2)
 
2008 Journal of Agroalimentary Processes and Technologies 2008, 14(1)
 
2007 Journal of Agroalimentary Processes and Technologies 2007, 13(2)
 
2007 Journal of Agroalimentary Processes and Technologies 2007, 13(1)
 
2006 Journal of Agroalimentary Processes and Technologies 2006, 12(2)
 
2006 Journal of Agroalimentary Processes and Technologies 2006, 12(1)
 
2005 Scientifical Researches. Agroalimentary Processes and Technologies, 2005, 11(2)
 
2005 Scientifical Researches. Agroalimentary Processes and Technologies, 2005, 11(1)
 
 
 
 

57 .   Antioxidant Capacity Evaluation in Relation with Polyphenolos and Ascorbic Acid Content for Some Natural Juices

Authors: Diana Moigrădean, Mariana-Atena Poiană, I. Gergen, Diana Dogaru


Abstract:

Twelve different commercial natural juices of fruits (six nectar and six clear juices) from Timisoara market were analyzed for some chemical characteristics (total acidity, soluble substance, total extract-determined on the basis of standardized method) and antioxidant activities (using FRAP method), total polyphenols amount (by Folin-Ciocalteu method) and ascorbic acid content (using 2,6-dichlorophenol indophenol method). The antioxidant capacity varied between 1.5-3 mM Fe2+/L for clear natural juices and between 4-6.5 mM Fe2+/L for fruit nectar. The polyphenols content it was situated between 0.8-1.1 mM acid gallic/L for clear natural juices and between 2-5 mM acid gallic/L for fruit nectar. The values obtained for ascorbic acid content was situated between 0.5-2.2 mM/L, different for clear juices and nectar.

Keywords: antioxidant capacity, polyphenols, ascorbic acid, fruit nectar, clear natural juice

PDF Version

 
 
   
Contact
Banat's University of Agricultural Sciences and Veterinary Medicine
"King Michael I of Romania" from Timisoara

Faculty of Food Processing Technology
300645-Timisoara, Calea Aradului 119, Romania
Tel: +40-256-277423 , Fax: +40-256-277326

Copyright © 2019 Journal of Agroalimentary Processes and Technologies                                                                                                                                  Web design by Royalty