prikaz prve stranice dokumenta Total phenol content and antioxidant activity of water solutions of plant extracts
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Scientific paper - Original scientific paper
Total phenol content and antioxidant activity of water solutions of plant extracts
Croatian journal of food science and technology, 1 (2009), 1; 1-7. urn:nbn:hr:109:696015
Kopjar, Mirela; Piližota, Vlasta; Hribar, Janez; Simčič, Marjan

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Kopjar, M., Piližota, V., Hribar, J. & Simčič, M. (2009). Total phenol content and antioxidant activity of water solutions of plant extracts. Croatian journal of food science and technology, 1. (1), 1-7. Retrieved from https://urn.nsk.hr/urn:nbn:hr:109:696015

Kopjar, Mirela, et al. "Total phenol content and antioxidant activity of water solutions of plant extracts." Croatian journal of food science and technology, vol. 1, no. 1, 2009, pp. 1-7. https://urn.nsk.hr/urn:nbn:hr:109:696015

Kopjar, Mirela, Vlasta Piližota, Janez Hribar and Marjan Simčič. "Total phenol content and antioxidant activity of water solutions of plant extracts." Croatian journal of food science and technology 1, no. 1 (2009): 1-7. https://urn.nsk.hr/urn:nbn:hr:109:696015

Kopjar, M., et al. (2009) 'Total phenol content and antioxidant activity of water solutions of plant extracts', Croatian journal of food science and technology, 1(1), pp. 1-7. Available at: https://urn.nsk.hr/urn:nbn:hr:109:696015 (Accessed 21 February 2025)

Kopjar M, Piližota V, Hribar J, Simčič M. Total phenol content and antioxidant activity of water solutions of plant extracts. Croatian journal of food science and technology [Internet]. 2009 July 08 [cited 2025 February 21];1(1):1-7. Available at: https://urn.nsk.hr/urn:nbn:hr:109:696015

M. Kopjar, V. Piližota, J. Hribar and M. Simčič, "Total phenol content and antioxidant activity of water solutions of plant extracts", Croatian journal of food science and technology, vol. 1, no. 1, pp. 1-7, July 2009. [Online]. Available at: https://urn.nsk.hr/urn:nbn:hr:109:696015. [Accessed: 21 February 2025]

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Metadata
Title (english)Total phenol content and antioxidant activity of water solutions of plant extracts
AuthorMirela Kopjar
AuthorVlasta Piližota
AuthorJanez Hribar
AuthorMarjan Simčič
Author's institutionJosip Juraj Strossmayer University of Osijek
FACULTY OF FOOD TECHNOLOGY
Scientific / art field,
discipline and subdiscipline		BIOTECHNICAL SCIENCES
Food Technology
Abstract (english)
Water solutions of extracts were investigated for total phenol content, flavonoid content and antioxidant activity. Susceptibility to degradation of water solutions of plant extracts, under light and in the dark, during storage at room temperature was investigated in order to determine their stability prior to their application for fortification of food products. Large dispersion of total phenol (TP) content in the investigated model solutions of selected extracts (olive leaves, green tea, red grape, red wine, pine bark PE 5:1, pin bark PE 95 %, resveratrol), ranging from 11.10 mg GAE/100 mL to 92.19 mg GAE/100 mL was observed. Consequently, large dispersion of total flavonoids (TF) content (8.89 mg to 61.75 mg CTE/100 mL) was also observed. Since phenols have been mostly responsible for antioxidant activity of extracts, in most cases, antioxidant activity followed the TP content. That was proven by estimation of correlation coefficient between the total phenol content and antioxidant activity. Correlation coefficients between investigated parameters ranged from 0.5749 to 0.9604. During storage of 5 weeks at room temperature loss of phenols and flavonoids occurred. Antioxidant activity decreased with the decrease of TP and TF content. Degradations of phenols and flavonoids were more pronounced in samples stored at light.
Keywords (english)
Languageenglish
Publication typeScientific paper - Original scientific paper
Publication statusPublished
Peer reviewPeer review
Publication versionPublished version
Journal titleCroatian journal of food science and technology
Numberingvol. 1, no. 1, pp. 1-7
p-ISSN1847-3466
e-ISSN1848-9923
URN:NBNurn:nbn:hr:109:696015
Publication2009-07-08
ProjectNumber: 113-1130473-0340
Title (croatian): Razvoj procesa proizvodnje visokokvalitetne hrane
Title (english): Development of processes for high quality foods
Leader: Vlasta Piližota
Jurisdiction: Croatia
Funding stream: zProjects
Document URLhttps://hrcak.srce.hr/53238
Type of resourceText
Access conditionsOpen access
Terms of useLicence Attribution-NoDerivatives 4.0 International (CC BY-ND 4.0) icon
Created on2025-02-20 10:36:50