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Researchers from University of Belgrade Report Details of New Studies and Findings in the Area of Antioxidants (Antioxidant properties of the...

August 5, 2014



Researchers from University of Belgrade Report Details of New Studies and Findings in the Area of Antioxidants (Antioxidant properties of the anthocyanin-containing ultrasonic extract from blackberry cultivar "Cacanska Bestrna.")

By a News Reporter-Staff News Editor at Life Science Weekly -- Research findings on Antioxidants are discussed in a new report. According to news originating from Belgrade, Serbia, by NewsRx correspondents, research stated, "For the first time, an ultrasound-assisted extraction was used to investigate isolation of anthocyanin-containing extracts from the blackberry cultivar 'Cacanska Bestrna' widely grown in Serbia. Sonication time and temperature influence on the yield, active substances content and antioxidant activity of the extracts isolated from blackberry fruit pur e was discussed."

Our news journalists obtained a quote from the research from the University of Belgrade, "Ultrasound-assisted extraction with acidified ethanol at room and moderately high temperature (40 degrees C) enabled rapid isolation (15-30 min) of anthocyanin-containing blackberry extracts with the high yields (5.3-6.3%). Both increase of the sonication temperature and time within studied ranges had positive effect on the extraction yield. The HPLC analysis revealed the presence of the anthocyanins in the investigated samples. After hydrolysis of all the samples, aglycone-cyanidin was detected in the samples. Determined cyanidin content in the obtained blackberry extracts (0.7-1.0%) was up to 20 times higher than in the blackberry juice. Cyanidin content was positively affected by sonication time and temperature increase. The antioxidant properties of the extracts were analyzed by the ferric reducing antioxidant power (FRAP) and 2,2-diphenyl-1-picryihydrazyl (DPPH) radical scavenging capacity assays. Positive effect of increase of the sonication time and/or temperature on the scavenging activity of the extracts against free DPPH radicals and thus lower IC50 values was demonstrated. Strong linear correlation of DPPH radical scavenging capacities of the extracts with content of cyanidin and tannins was established. FRAP values significantly correlated with total tannin content in the extracts."

According to the news editors, the research concluded: "The analyses of composition and antioxidant properties in this study revealed great potential of blackberry ultrasonic extracts of the cultivar 'Cacanska Bestrna' for further use in food and pharmaceutical industries."

For more information on this research see: Antioxidant properties of the anthocyanin-containing ultrasonic extract from blackberry cultivar "Cacanska Bestrna." Industrial Crops and Products, 2014;53():274-281. Industrial Crops and Products can be contacted at: Elsevier Science Bv, PO Box 211, 1000 Ae Amsterdam, Netherlands. (Elsevier - www.elsevier.com; Industrial Crops and Products - www.elsevier.com/wps/product/cws_home/522825)

The news correspondents report that additional information may be obtained from J. Ivanovic, University of Belgrade, Fac Technol & Met, Dept. of Organ Chem, Belgrade 11000, Serbia. Additional authors for this research include V. Tadic, S. Dimitrijevic, M. Stamenic, S. Petrovic and I. Zizovic (see also Antioxidants).

Keywords for this news article include: Antioxidants, Serbia, Europe, Belgrade, Anthocyanins, Protective Agents, Biological Pigments

Our reports deliver fact-based news of research and discoveries from around the world. Copyright 2014, NewsRx LLC


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Source: Life Science Weekly


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