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Journal of Agriculture and Biological Sciences Vol. 2(6) pp.136-140, September 2011.
Available online http://www.globalresearchjournals.com/journal/?id=JABS#home?id=JABS
Copyright ©2011 Global Research Journals.
Full Legth Research.
Distribution of Antinutrients and Antioxidant Properties in the plant of Thornapple (Datura stramonium L) Solanaceae
*1Oseni, O. A., 1Igbe, F. and 2Olagboye, S. A
1Department of Biochemistry, Federal University of Technology, Akure, Ondo State, Nigeria
2Department of Chemistry, Federal University of Technology, Akure, Ondo State, Nigeria
* Corresponding author’s e-mail: ooseni2003@yahoo.com
Accepted 28th April 2011.
| Abstract |
The distribution of antinutrient and antioxidant properties were studied on sun dried thorn apple plant that was separated into the leaf, seed, whole fruit and stem. The antinutrient contents of phytate was highest in the whole fruit (35.39 mg/g) and least in the leaf (9.59 mg/g); oxalate and saponin were observed to be highest in the seed (3.06 and 23.56) mg/g respectively as the leaf contained the highest amount of tannin and cyanide (0.071 and 4.22) mg/g respectively. The results obtained for antioxidant phytoconstituents and activities of various parts showed that the leaf contained a higher value of total phenol content (0.397 mg/g) than other parts with the seed (0.277 mg/g); the stem (0.144 mg/g) and the whole fruit having the least (0.100 mg/g) amount. The ferric reducing antioxidant property (FRAP) was also observed to be highest in the stem (96.69%); the leaf (68.90%); whole fruit (62.70%) with the least in seed (25.60%) for 0.25mg/mL sample solution. The free radical scavenging ability of the extracts against (1,1-diphenyl–2 picrylhydrazyl) DPPH was observed highest in the seed (83.40%); leaf (78.90%); whole fruit (50.40%) while the stem was the least with 11.50%. The results however showed that both the leaf and the whole fruit are potential poisons for animals and humans because of high level of cyanide contents and every part of the plants was significantly higher in one phytoconstituent or the other.
Keywords: Total phenol, reducing power, scavenging ability, mineral chelation, Datura .