Chemical and biological activity of selected varieties of spring canola (Brassica napus) and mustard ( Brassica juncea) and introduction of a high content of favourable fatty acids to mustard
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Date
2005
Authors
Gamlathge, M. V.
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Publisher
University of Peradeniya
Abstract
The analysis of fatty acid profiles by gas chromatography performed on ester derivatives indicated that erucic acid content in selected spring canola (B. napus) varieties, Narendra, Oscar, Hyola, Karoo and Outback grown in Western Australia was very low compared to that of B. juncea (mustard). The nutritionally favourable oleic acid content was very high in canola varieties compared to that of mustard. The F; hybrids between B. napus and B. juncea showed a moderate amount of erucic acid content compared to that of B. juncea and low content of oleic acid than that of B. napus varieties.
The TLC-Bioassay method used for anti-fungal activity indicated that Oscar, and Karoo had anti-fungal properties against Cladosporium spp., Aspergillus spp. and Mucor spp.. The disc method for anti-bacterial activity test of different B. napus varieties and B. juncea indicated that Narendra, Oscar, Outback and Karoo were active against Streptococcus spp., E. coli, Staphylococcus 8pp. and Pseudomonas spp.. Mustard did not show anti-fungal or anti- bacterial activity. The results indicated that if the traits of anti-fungal and anti-bacterial properties of canola could be transferred to mustard, it would be possible to produce fungal and bacterial resistant mustard varieties of high nutrition value.
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Keywords
Chemical sciences , Analytical chemistry , Mustard , Fatty acids