Naslov
ICP-AES determination of selected nutrients in Aronia (Aronia melanocarpa) berries and infusions

Autori
Zeiner, Michaela ; Juranović Cindrić, Iva ; Mihajlov Konanov, Darija ; Stingeder Gerhard.

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

Izvornik
Book of Abstracts / Jana Kubova ; Marek Bujdos - Vysoké Tatry : Slovak Spectroscopic Society, 2012

ISBN
978-80-223-3292-7

Skup
European Symposium on Atomic Spectrometry ESAS 2012 and XXth Slovak –Czech Spectroscopic Conference

Mjesto i datum
Vysoké Tatry, Slovačka, 07.10.2012. - 12.10.2012

Vrsta sudjelovanja
Predavanje

Vrsta recenzije
Međunarodna recenzija

Ključne riječi
ICP-AES; elements; Aronia melanocarpa; berries; infusions

Sažetak
Inductively coupled plasma atomic emission spectrometry (ICP-AES) was used for the determination of the elemental composition of Aronia berries also called black chokeberries (Aronia melanocarpa). Black chokeberries compose high amounts of anthocyanins, phenols, antioxidants, vitamines and minerals. Aronia berries originate from the eastern parts of North America and East Canada and came to Europe occurred around 1900 via Germany to Russia. Black chokeberry preparations were first used to inhibit chemically induced cancer in esophagus and colon. The berries represent a promising therapeutic source. Whereas the organic compounds are well studied, there are only rare data on the mineral composition of the chokeberries. Thus the study is focused on the determination of nutrients and toxic elements in aronia fruits and infusions, namely Al, Ba, Ca, Cd, Co, Cr, Cu, Fe, K, Mg, Mn, Na, Ni, Pb, Sr and Zn. To determine the total amount of nutrients in the whole fruit the Aronia samples were dried, homogenised and digested in a closed microwave assisted digestion system using nitric acid. Infusions were prepared with hot distilled water using different decoction times to find the best extraction conditions for the elements of interest. The ICP-AES method was validated and optimized for the determination of selected elements in the digest solutions of the berries and in the infusions. The nutrients Ca, K and Mg are present in the fruits (dried matter) at mg/g level, whereas the other elements are in the µg/g level or even below the limit of detection (Cd, Co, Ni, Pb). Based on the results obtained for the total metal content in the berries and the concentrations of the infusion the extraction yields were calculated. They range from 4 up to 44%. Thus Aronia berries as well as infusions derived from them are a good dietary source of essential metals in addition to the organic compound contained.

Izvorni jezik
Engleski

Znanstvena područja
Kemija

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