Characterization of Fulvic Acid Beverages by Mineral Profile and Antioxidant Capacity

Monika Swat , Iga Rybicka , Anna Gliszczyńska-Świgło


The main purpose of the study was to investigate the quality of fulvic acid-based food products. The concentrations of Ca, K, Mg, Na, Cu, Fe, Mn, and Zn, and antioxidant capacities of fulvic acid concentrates and ready-to drink beverages available on the global market were determined. The concentrations of minerals were determined using microwave plasma-atomic emission spectrometry. Antioxidant capacity was expressed as total polyphenol (TP) and flavonoid (TF) contents, the trolox equivalent antioxidant capacity (TEAC) and ferric reducing ability of plasma (FRAP) values. The daily portion of eight out of 14 products realized 45–135% of recommended daily allowance (RDA) for Fe. One of ready-to-drink beverages was also a good source of Mg (about 40% of RDA), and another one of Mn (about 70% of RDA). The concentrations of TP and TF in ready-to-drink beverages varied from 6.5 to 187 µg/mL, whereas in concentrates, from 5886 to 19,844 µg/mL. Dietary supplements or food products with fulvic acids may be a good source of antioxidant polyphenolic compounds and some minerals.
Author Monika Swat (UEP)
Monika Swat,,
- Poznań University of Economics and Business
, Iga Rybicka (WT / KTiAI)
Iga Rybicka,,
- Department of Technology and Instrumental Analysis
, Anna Gliszczyńska-Świgło (WT / KTiAI)
Anna Gliszczyńska-Świgło,,
- Department of Technology and Instrumental Analysis
Journal seriesFoods, ISSN 2304-8158, (N/A 70 pkt)
Issue year2019
Publication size in sheets0.5
Article number605
Keywords in Polishaktywność przeciwutleniająca, kwasy fulwowe, napoje funkcjonalne, żelazo, składniki mineralne
Keywords in Englishantioxidant capacity, fulvic acids, functional beverage, iron, mineral
Languageen angielski
Score (nominal)70
Score sourcejournalList
ScoreMinisterial score = 70.0, 14-07-2020, ArticleFromJournal
Publication indicators WoS Citations = 0; WoS Impact Factor: 2018 = 3.011 (2)
Citation count*1 (2020-09-13)
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