EFFECT OF SOME MICRONUTRIENTS ON THE CHEMICAL COMPOSITION OF SESAME SEEDS | ||
| Egyptian Journal of Agricultural Research | ||
| Article 21, Volume 76, Issue 4, December 1998, Pages 1619-1630 PDF (3.02 M) | ||
| Document Type: Original Article | ||
| DOI: 10.21608/ejar.1998.363491 | ||
| Authors | ||
| SAMIHA M. ABDEL-SALAM; NAWAL M. ABDEL-AZIZ; ADEL Y. GIRGIS | ||
| Food Technology Research Institute, Agricultural Research Center, Giza, Egypt | ||
| Abstract | ||
| Seame seeds (Sesamum indicum L. Giza 32 variety) were cultivated at Bahtim, Agric. Res. Station, during two successive seasons 1 995 and 1996. After germination, the seedlings were sprayed with some micronutrients, i.e., Zn, Mn, Fe in the form of EDTA compound and Cobalt nitrate at the concentration of 0.06% (w/v). The sesame seeds were evaluated through testing their chemical composition and oil quality. The results revealed that foliar spraying with Fe caused a significant decrease in protein content compared to the control, other treatments resulted in nonsignificant differences. Total carbohydrates were significantly increased in all treatments in comparison to the untreated plants. Oil content showed insignificant differences after the Cobalt treatment, while significant increase was observed for the Fe treatment, while Zn and Mn treatments resulted in significant decrease, in the oil content. Concerning mineral content, sesame plant sprayed with Zn produced seeds with highest amounts of Zn, K and Mg. The Mn application resulted in an increase in Mn, Mg, K, Ca and Zn. While Fe treatment showed highest amounts of Fe, Na and Ca. Sesame seed proteins either treated or untreated with micronutrients were fractionated into fractions according to their solubilities in H2O, NaCi, Et-OH and NaOH. The obtained data showed highest amounts in proteins fraction due to Zn treatment. Sesame fatty acids were fractionated by GLC and the the data showed that the levels of C,18: 1 and C18:2 were increased and decreased respectively due to the application of the aformentioned mineral treatments. In conclusion, it is evident that sprayed micronutrients maintain or improve most of the chemical components and nutritive value of the produced sesame seeds, as well as the oil quality and its stability. | ||
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