EJPAU 2007. Korus A. , Kmiecik W. CONTENT OF CAROTENOIDS AND CHLOROPHYLL PIGMENTS IN KALE (<I>BRASSICA OLERACEA</I> L. VAR.<I> ACEPHALA</I>) DEPENDING ON THE CULTIVAR AND THE HARVEST DATE

Electronic Journal of Polish Agricultural Universities (EJPAU) founded by all Polish Agriculture Universities presents original papers and review articles relevant to all aspects of agricultural sciences. It is target for persons working both in science and industry,regulatory agencies or teaching in agricultural sector. Covered by IFIS Publishing (Food Science and Technology Abstracts), ELSEVIER Science - Food Science and Technology Program, CAS USA (Chemical Abstracts), CABI Publishing UK and ALPSP (Association of Learned and Professional Society Publisher - full membership). Presented in the Master List of Thomson ISI.

2007
Volume 10
Issue 1

Topic:

Food Science and Technology

ELECTRONIC
JOURNAL OF
POLISH
AGRICULTURAL
UNIVERSITIES

Korus A. , Kmiecik W. 2007. CONTENT OF CAROTENOIDS AND CHLOROPHYLL PIGMENTS IN KALE (BRASSICA OLERACEA L. VAR. ACEPHALA) DEPENDING ON THE CULTIVAR AND THE HARVEST DATE, EJPAU 10(1), #28.
Available Online: http://www.ejpau.media.pl/volume10/issue1/abs-28.html

CONTENT OF CAROTENOIDS AND CHLOROPHYLL PIGMENTS IN KALE (BRASSICA OLERACEA L. VAR. ACEPHALA) DEPENDING ON THE CULTIVAR AND THE HARVEST DATE

Anna Korus¹, Waldemar Kmiecik²
¹ Department of Fruit, Vegetable and Mushroom Processing, University of Agriculture in Cracow, Poland
² Department of Raw Materials and Processing of Fruit and Vegetables, Agricultural University of Cracow, Poland

ABSTRACT

The levels of total carotenoids, beta-carotene, chlorophyll a and b and total chlorophylls were determined in kale leaves of the cultivars Winterbor F₁, Redbor F₁ and Srednio Wysoki Zielony Kędzierzawy. The investigation was carried out in two successive years; in each year the raw material was obtained in three harvests carried out 10, 14 and 18 weeks after planting young kale plants in the field. During the whole period of the investigation the average content of carotenoids in 100 g fresh matter of kale was 23.1-26.0 mg; that of beta-carotene 3.80-4.53 mg; and that of total chlorophylls 118-145 mg. The ratio of chlorophyll a to b was 1:0.41-1:0.42. The greatest content of all the analysed constituents was found in the cultivar Winterbor F₁. During the entire period of the investigation there was practically no difference in carotenoids content between the first and second harvests, the content of beta-carotene increasing by 27% and that of chlorophylls by 4%. In the third harvest an 18% increase was found in the content of carotenoids and a 48% increase in beta-carotene, the content of chlorophylls decreasing by 11%. The proportion of beta-carotene in the level of carotenoids varied from 15% to 19% depending on the cultivar and the time of harvest.

Key words: beta-carotene, carotenoids, chlorophylls, kale, time of harvest .

Anna Korus
Department of Fruit, Vegetable and Mushroom Processing, University of Agriculture in Cracow, Poland
122 Balicka Street, 30-149 Cracow, Poland
Phone: (+48 12) 662 47 57
email: akorus@ar.krakow.pl

Waldemar Kmiecik
Department of Raw Materials and Processing of Fruit and Vegetables,
Agricultural University of Cracow, Poland
122 Balicka Street, 30-149 Cracow, Poland
Phone: (+48 12) 662 47 57

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