Naslov
Determination of correlations between electrical conductivity, dry matter, total polyphenolic content and antioxidant capacity of marigold extracts (Calendula officinalis)

Autori
Valinger, Davor ; Jurina, Tamara ; Benković, Maja ; Jurinjak Tušek, Ana ; Belščak-Cvitanović, Ana

Vrsta, podvrsta i kategorija rada
Sažeci sa skupova, sažetak, znanstveni

Izvornik
Book of abstracts International Conference 16th Ružička days, "Today science-tomorrow industry" / Jukić, Ante - Osijek : Hrvatsko društvo kemijskih inženjera i tehnologa (HDKI) ; Prehrambeno tehnološki fakultet Sveučilišta Josipa Jurja Strossmayera u Osijeku, 2016, 87-87

Skup
International Conference 16th Ružička days, "Today science-tomorrow industry"

Mjesto i datum
Vukovar, Hrvatska, 21.09.2016. - 23.09.2016

Vrsta sudjelovanja
Poster

Vrsta recenzije
Međunarodna recenzija

Ključne riječi
correlations; physical and chemical properties; marigold extracts

Sažetak
Marigold has been used in folk medicine for centuries. Traditionally, it has been used to treat conjunctivitis, blepharitis, eczema, gastritis, minor burns including sunburns, warts, and minor injuries such as sprains and wounds. Today, marigold is being investigated for its anti-cancer properties. According to recent literature, there has been evidence of success in treating certain cancers (i.e. Heren's carcinoma) combining marigold with other herbs such as Echinacea purpurea, Scorzonera humilis L., and Aconitum moldavicum [1]. In this research, physical properties (extraction yield determined as dry matter content and electrical conductivity of the extracts) and chemical properties (total polyphenols (Folin-Ciocalteau reagent) and antioxidant capacity (ABTS method)) were correlated. The plant extracts were prepared by conventional aqueous extraction using a high solid-to-liquid ratio (SLR = 50, w/w) and by stirring (500 rpm) at three different temperatures (40 °C, 60 °C, 80 °C ) for 90 minutes. The samples for analysis were taken at regular time intervals (0.5, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 15, 20, 25, 30, 35, 40, 45, 50, 55, 60, 70, 80, 90 min). Simple regression models showed strong positive correlations between electrical conductivity, total polyphenolic content and antioxidant capacity at the temperatures of 40 °C and 60 °C while at 80 °C correlations were not as strong

Izvorni jezik
Engleski

Znanstvena područja
Biotehnologija

Napomena
Ovaj rad doprinos je projektu "Primjena mikroreaktora u praćenju antioksidacijske aktivnosti samoniklog bilja (MICRO-AA)" projektni broj HR.3.2.01-0069, koji je financiran iz Europskog socijalnog fonda (ESF) putem operativnog programa Razvoj ljudskih potencijala.

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