Acta Univ. Agric. Silvic. Mendelianae Brun. 2008, 56(1), 91-96 | DOI: 10.11118/actaun200856010091

Kvalitativní charakteristiky a antioxidační vlastnosti kultivarů brokolice (Brassica Oleracea L. var. italica Plenck)

Marek Gajewski, Paweł Szymczak, Marta Gorczyca, Maja Madejska
Department of Vegetable and Medicinal Plants, Warsaw University of Life Sciences - SGGW, ul. Nowoursynowska 166, 02-787 Warszawa, Poland

Brokolice je v poslední době velmi populární v lidské výživě, proto její výživová a biologická hodnota je důležitým aspektem. Naše výzkumy prokázaly, že kultivary brokolice se liší v kvalitě, koncentraci živin, aktivitě antioxidantů, obsahu vitaminu C a obsahu barviv. Též kvalita stonků a květů se u jednotlivých kultivarů lišila. V případě obsahu antioxidantů byl obsah vyšší v květenství puků než u stonku. Obsah karotenoidů byl vyšší v květenství než ve stoncích, ale vitamin C byl na stejném stupni ve stoncích i květenstvích. Květenství a stonky se lišily v barevných parametrech chlorofylu A a B. Květenství i stonky jsou jedlými částmi brokolice a dá se říci, že mají pozitivní nutriční i biologickou hodnotu v lidské výživě.

antioxidační charakteristika, brokolice, karotenoidy, QDA, kvalita, senzorická kvalita

Quality characteristics and antioxidative properties of broccoli cultivars (Brassica Oleracea L. var. italica Plenck)

Quality traits of three broccoli cultivars, which were grown for autumn crop was determined: 'Chevalier' F1, 'Milady' F1 (cultivars of Dutch origin) and 'Cezar' F1 (of Polish origin). Immediately after harvest sensory quality of broccoli was evaluated, using the quantitative descriptive analysis method (QDA). In 'brainstorming' session there were chosen 14 attributes (profiles) concerning smell, texture, taste / flavour. Overall quality impression was also scored and hedonic test of broccoli liking was performed. Other quality traits determined were: antioxidant activity, total carotenoids content, vitamin C content, colour parameters in CIE L*a*b* system. These traits were determined separately for florets and stems of broccoli plants, both of which are usable parts of this vegetable. Results showed that investigated cultivars differed in respect of quality traits concerning sensory attributes, antioxidant activity, carotenoids content, vitamin C content and colour parameters. Results showed also that florets of broccoli performed higher antioxidant activity than stems. Carotenoids content in broccoli cultivars was much higher in florets than in stems, but vitamin C content was on similar level in florets and stems of the plants. Florets and stems of all broccoli cultivars differed much in respect of colour parameters - lightness, greenness and yellowness.

Keywords: antioxidant activity, broccoli, carotenoids, QDA, quality, sensory quality
Grants and funding:

Research was supported by Polish Ministry of Science and High Education, grant No. 2 PO6R 025 29.

Received: October 19, 2007; Published: November 17, 2014  Show citation

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Gajewski, M., Szymczak, P., Gorczyca, M., & Madejska, M. (2008). Quality characteristics and antioxidative properties of broccoli cultivars (Brassica Oleracea L. var. italica Plenck). Acta Universitatis Agriculturae et Silviculturae Mendelianae Brunensis, 56(1), 91-96. doi: 10.11118/actaun200856010091
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