Topic
Rapeseed
About: Rapeseed is a research topic. Over the lifetime, 2945 publications have been published within this topic receiving 51790 citations. The topic is also known as: Brassica napus & rape.
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TL;DR: In this paper, the influence of ethanol pre-treatment of the rapeseed meal on protein extractability, amino acid composition and fractional profile was evaluated, and it was shown that the treatment of the rapedeed meal with ethanol significantly increased the protein content from 37.4 to 42.3% and reduced the lipid concentration from 1.9 to 1.1%.
Abstract: The production of rapeseed oil leads to generation of large quantities of rapeseed meal as a by-product. To increase the applicability of the rapeseed meal in feed and food industries, the content of antinutrient compounds is often reduced by treatment with ethanol. The aim of the study was to evaluate the influence of ethanol pre-treatment of the rapeseed meal on protein extractability, amino acid composition and fractional profile. The ethanol treatment of the rapeseed meal significantly increased the protein content from 37.4 to 42.3% and reduced the lipid concentration from 1.9 to 1.1%. Approximately 4- and 14-fold reductions of the phenols and glucosinolate contents were achieved respectively. Protein yield, however, was diminished from 26.4 to 23.6%. A stronger decrease of the protein yield, from 47.8 to 26.4%, was caused by processing of the rape seeds to rapeseed meal. The process resulted in the reduction of lysine content, while further ethanol treatment of the rapeseed meal affected more amino acids, both essential (threonine, phenylalanine) and non-essential (alanine, tyrosine, arginine, histidine). Comparative fractional protein profiles of rape seeds, rapeseed meal and ethanol treated rapeseed meal exhibited differences in both composition of the fractions and the relative quantity of the proteins. Data suggested that the treatment of the rapeseed meal with ethanol impacted protein solubility, amino acid composition and protein fractional profile. This knowledge is valuable when ethanol treated rapeseed meal is used either as a protein feed additive or as a source for generation of protein-rich ingredients with specific nutritive value and functionality.
21 citations
TL;DR: Jankowski et al. as mentioned in this paper evaluated the effect of sulfur application to soil on the concentrations of copper, zinc and manganese in the root residues, straw and oil cake of winter and spring rapeseed.
Abstract: Sulfur application has a significant effect on the yield of oil bearing plants of the family Brassicaceae, especially when the sulfur content of soil is low. Sulfur fertilization also affects the value of plant raw materials, reflected by the concentrations of mineral and biologically active compounds in biomass. The aim of this study was to determine the effect of sulfur application to soil on the concentrations of copper, zinc and manganese in the root residues, straw and oil cake of winter and spring rapeseed. A three-year (2005-2008) field experiment was conducted at the Agricultural Experimentation Station in Bałcyny (NE Poland). In both spring and winter rapeseed, oil cake contained the highest levels of copper and zinc, followed by root residues and straw. The highest concentrations of manganese per kg dry matter (DM) were found in the root residues of winter rapeseed and in the cake of spring rapeseed. The concentrations of micronutrients (Cu, Zn, Mn) were slightly higher in the roots of winter rapeseed, compared with spring rapeseed. Sulfur fertilization decreased copper levels and increased manganese levels in the root residues of spring and winter rapeseed. Sulfur application to soil increased zinc concentrations in winter rapeseed roots, and it had no significant influence on the zinc content of spring rapeseed roots. Spring rapeseed straw contained considerably higher levels of zinc and manganese than winter rapeseed straw. The copper content of dr hab. Krzysztof Jankowski, Chair of Agrotechnology and Crop Management, University of Warmia and Mazury in Olsztyn, 8 Oczapowskiego Street, 10-719 Olsztyn, Poland, e-mail: krzysztof.jankowski@uwm.edu.pl * The results presented in this paper were obtained as part of a comprehensive study financed by the Ministry of Science and Higher Education (grant No. N310 031 32/167), titled Multi-criteria evaluation of the forecrop quality of oil-bearing plants grown as energy crops for winter wheat.
21 citations
TL;DR: Additive genetic effects were important for control of all five fatty acids, contributing from 84% to 97% of the total sums of squares for each fatty acid.
Abstract: A large industrial oil market has recently developed for high erucic acid (>500 g kg−1) rape (Brassica napus L.) cultivars. This research was conducted to: (i) determine genetic effects for five fatty acids, (ii) determine if maternal effects influence fatty acid content of progeny, and (iii) estimate correlations among fatty acid contents in hybrid progeny. Lines with very high erucic acid content and very low erucic acid content were used to develop eight generations to estimate additive, dominance, and epistatic effects for fatty acid content using Generation Means Analyses. Mean oleic, linoleic, linolenic, eicosenoic and erucic acid content differed among generations and additive genetic effects were important for control of all five fatty acids, contributing from 84% to 97% of the total sums of squares for each fatty acid. Epistasis was observed in the inheritance of eicosenoic acid. Maternal effects were not detected.
21 citations
TL;DR: The results suggested that CHB was the optimum harvesting time for winter oilseed rape along the Yangtze River.
21 citations
TL;DR: The results suggest that zy036 silique wall, 6F313 seed coat, and 61616 embryo have positive impacts on the seed oil accumulation, and three organ-specific mechanisms regulating oil synthesis in rapeseed.
21 citations