National Academy of Agricultural Sciences (NAAS)
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PRINT ISSN : 2319-7692
Online ISSN : 2319-7706 Issues : 12 per year Publisher : Excellent Publishers Email : editorijcmas@gmail.com / submit@ijcmas.com Editor-in-chief: Dr.M.Prakash Index Copernicus ICV 2018: 95.39 NAAS RATING 2020: 5.38 |
People will still be looking for new sources of food, feed, and medicine to face the challenges of malnutrition and population growth. In this study, the proximate composition, minerals, bioactive-secondary metabolites, and biological assay (antioxidants and allelopathic activities) of two Brassica species collected from the coastal region of Misurata, Libya: Brassica nigra(L.) K. Koch and Brassica tournefortii Gouan were investigated. The shoot of Brassica tournefortii had the highest contents of moisture (22.19%), total ash (16.90%), crude fibers (25.40%), crude fat (5.5%), sodium (45.10 mg g-1 dry weight), potassium (38.80 mg g-1 dry weight), calcium (22.40 mg g-1 dry weight), magnesium (13.50 mg g-1 dry weight), total phenols (34.50 mg g-1 dry weight) and flavonoids (18.78 mg g-1 dry weight).While, the shoot of Brassica nigra attained the greatest values of crude protein (10.30%), tannins (10.4 mg g-1 dry weight), alkaloids (2.09 mg g-1 dry weight), and saponins (1.50 mg g-1 dry weight). Regarding antioxidants activity, the extract of B. tournefortii shoots had a high IC50 value (0.32 mg ml-1) than the shoot of B. nigra (0.37 mg ml-1), but lower than catechol (0.18 mg ml-1).The methanolic extracts of B. tournefortii shoots and roots had the highest germination inhibition percentages (88.1 and 82.32%, respectively) for Chenopodium murale seeds. The extracts of B. tournefortii shoots displayed the highest inhibition percentage for plumule and radicle growths of Chenopodium murale(93.17and 96.21 %, respectively).The highest allelopathic activity of B. tournefortii may be attributed to the high contents of total phenols and flavonoids as compared with B. nigra. The present work suggests that Brassica tournefortii is a good candidate as a nutritional, antioxidant source, andan eco-friendly bioherbicide against a noxious weed Chenopodium murale.
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