Factors affecting the actual yield of active substances from anthocyanin-rich berries

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F25271121%3A_____%2F15%3A%230000607" target="_blank" >RIV/25271121:_____/15:#0000607 - isvavai.cz</a>

Result on the web

<a href="http://dx.doi.org/10.1515/afpuc-2015-0006" target="_blank" >http://dx.doi.org/10.1515/afpuc-2015-0006</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1515/afpuc-2015-0006" target="_blank" >10.1515/afpuc-2015-0006</a>

Result language

angličtina

Original language name

Factors affecting the actual yield of active substances from anthocyanin-rich berries

Original language description

The content of anthocyanins in fruits (Sambucus nigra. Vaccinium myrtillus. Aronia melanocarpa) and in some fruit (berry) products was determined by differential spectrophotometry, a method recommended by AOAC International (former Association of Official Analytical Chemists). The method takes advantage of the reversible pH-dependent transformation of the colour to the colourless form of anthocyanins. The procedure and evaluation were refined to allow measurements of incompletely specified anthocyanin mixtures. Parameters of the determination (buffer composition, pH, stabilisation of samples, reference standards) were optimised. Using the modified method, anthocyanins in various matrices (fruits, syrups, wines) were measured with the aim to explain possible losses of these active substances during processing and/or storage of fruit products. Real samples of commercial products recommended conventionally as a valuable source of antioxidants were analysed and in some of them, only low levels of anthocyanins were found. In a model arrangement, anthocyanins in the skin and the pulp of Sambucus nigra fruits were extracted separately. In all samples of various cultivars, anthocyanins were present predominantly in the skin (up to 90% of the total content). Considering this, among other factors, a suitable extraction technology might improve the quality of berry products substantially.

Czech name

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Czech description

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Type

J_x - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)

CEP classification

GC - Plant growing, crop rotation

OECD FORD branch

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Project

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Continuities

V - Vyzkumna aktivita podporovana z jinych verejnych zdroju

Publication year

2015

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

Acta Facultatis Pharmaceuticae Universitatis Comenianae

ISSN

0301-2298

e-ISSN

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Volume of the periodical

62

Issue of the periodical within the volume

s9

Country of publishing house

CZ - CZECH REPUBLIC

Number of pages

10

Pages from-to

31-40

UT code for WoS article

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EID of the result in the Scopus database

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