Tag Archives: Brassicaceae

654-661 N. Maršalkienė, A. Sliesaravičius, B. Karpavičienė and A. Dastikaitė
Oil content and fatty acid composition of seeds of some Lithuanian wild crucifer species
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Oil content and fatty acid composition of seeds of some Lithuanian wild crucifer species

N. Maršalkienė¹, A. Sliesaravičius¹, B. Karpavičienė² and A. Dastikaitė¹

¹Department of Crop Science and Animal Husbandry. Lithuanian University of Agriculture,Studentų 11, Akademija, Kaunas distr. Lt-53067 Lithuania; e-mail: nijole.petraityte@delfi.lt
²Laboratory of economic botany. Institute of Botany. Zaliuju Ezeru g. 49,Lt-08406, Vilnius, Lithuania

Abstract:

Oil content and fatty acid composition were investigated in the following wild crucifer species during 2008: Nineteen samples of fanweed (Thlaspi arvense L.), eight samples of flixweed (Descurainia sophia (L.) Webb ex Prantl), 17 samples of wallflower mustard (Erysimum cheiranthoides L.), one sample of sea rocket (Cakile baltica Jord. ex Pobed.) and two samples of garlic mustard (Alliaria petiolata (M. Bieb.) Cavara et Grande). The greatest amount of oil was found in seeds of flixweed (32.2%) and wallflower mustard (30.6%). Seeds of garlic mustard contained the least amount of oil (15.8%). Fatty acids were dominated by unsaturated acids (oleic, linoleic and linolenic) in flixweed (71.4%), wallflower mustard (63.5%) and sea rocket (62.7%), by erucic acid in garlic mustard (49.3%) and fanweed (35.6%) seed oil. The seed oil of some investigated wild crucifer species could be suitable both for human consumption and industrial purposes.

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477-488 D. Kostova, V. Kanazirska and M. Kamburova
A comparative analysis of different vegetable crops for content of manganese and molybdenum
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A comparative analysis of different vegetable crops for content of manganese and molybdenum

D. Kostova¹, V. Kanazirska² and M. Kamburova¹

¹Agricultural University – Plovdiv12, Mendeleev Str., 4000 Plovdiv, Bulgaria;e-mail: deny_kostova@yahoo.com
²Vegetable Crops Research Institute, Plovdiv, Bulgaria

Abstract:

The microelements manganese and molybdenum are actively absorbed by plants. The manganese and molybdenum content in 12 widely used vegetable species of the families Fabaceae, Malvaceae, Brassicaceae, Cruciferae were studied to establish the different levels of these elements in their production.Under the influence of nitrogen fertilization (400 mg N / 1000 g soil), different plantspecies, grown under the same soil-climatic conditions, accumulate different quantities of manganese and molybdenum from the nutrient medium. The resulting content varies considerably.Lentils are described with the highest content of manganese, 120.83 mg kg-1 dry matter(family Fabaceae). The concentration of molybdenum is highest in broccoli, 29.53 mg kg-1 dry matter (family Brassicaceae). Brussels sprouts and okra accumulate the least manganese and molybdenum – brussels sprouts, 5.50 mg kg-1 Мn dry matter, оkra, 5.23 mg kg-1 Мо dry matter.The manganese and molybdenum content in the vegetable species were determined by anew extraction-photometric method with Toluidine Blue and Tetrazolium Violet.Manganese and molybdenum has also been determined by atomic-absorption method, inorder to compare the results.

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493-498 H.P. Beck, D. Kostova and B. Zhang
Determination of manganese with Methylene Blue in various vegetable crops
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Determination of manganese with Methylene Blue in various vegetable crops

H.P. Beck, D. Kostova and B. Zhang

Inst. Inorg. Anal. Chem. Radiochem.,Saarland Univ. Saarbrucken, D-66123, Germany

Abstract:

A study was made of the manganese content in the crop production of 28 vegetable species, using the most common cultivars within the species. The manganese content was determined by a new extraction – spectrophotometric method using Methylene Blue (MB). The ion – associate of Mn(VII) was completely removed in a single extraction of only 5 s, and the 1,2-dichloroethane layer remained constant for 2 days under the usual laboratory conditions. To compare results, manganese was determined by the atomic – absorption method. The results obtained showed that the manganese content varies significantly in the different vegetable species and cultivars. The manganese content in more widely used varieties of tomatoes, peppers, head cabbage, melons, and radishes was studied in order to establish differences with respect to the level of this element in their production.

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