[The content of phenolic acids in the edible parts of selected varieties of apples].
Fruits and vegetables are essential sources of many nutritive substances which are necessary for normal function of the organism. One of the mostly consumed fruits in many European countries, including Poland is apples. The prohealthy properties of apples are associated with the contents of polyphenolic compounds, thus including in parts phenolic acids which have antioxidant properties. The concentration of these compounds depends on many factors such as variety climate and soil conditions, maturity as well as agro technical operations. The aim of this investigation was to compare the concentrations of phenolic acids and epicatechin in the varieties of apple Champion and Jonica, which were collected from different orchards around Lublin. The phenolic compounds were assayed using a Symmetry column carrier RP-C18 (Waters) integrated with a high pressure liquid chromatography apparatus. The dominant phenolic acids found in the Champion variety was chlorogenic acid, whereas in the Jonica variety, chlorogenic and homovanilic acids were the dominate once. The highest concentrations of chlorogenic acid was detected in the pulp of an apple (Jonica variety) collected from the orchards around the cities of Puławy and Lublin, whereas homovanilic acid was the highest in the other samples collected from the orchards in the vicinity of Stryjno and Góry Markuszowskie. Among the Jonica and Champion varieties of apples collected from various orchards in the vicinity of Lublin, the highest content of epicatechin (13,12 mg/kg) was found in the pulps of Champions variety collected in Puławy. In general, the Champion variety was the best source of phenolic acids and epicatechin compared to the Jonica variety independent of the harvest zone.
Malik
Agnieszka
A
Katedra Biotechnologii, Zywienia Człowieka i Towaroznawstwa Zywności, Uniwersytet Przyrodniczy, Lublin. agnieszka.malik@up.lublin.pl
Kiczorowska
Bozena
B
Zdyb
Justyna
J
D000975:Antioxidants / Q000032:analysis*; D002851:Chromatography, High Pressure Liquid / Q000379:methods; D016166:Free Radical Scavengers / Q000032:analysis*; D005638:Fruit / Q000737:chemistry; D006801:Humans; D062385:Hydroxybenzoates / Q000032:analysis*; D027845:Malus / Q000737:chemistry* / Q000145:classification; D011044:Poland; D013045:Species Specificity
D000975:Antioxidants; D016166:Free Radical Scavengers; D062385:Hydroxybenzoates; C017616:phenolic acid