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OIL, PROTIN CONTENTS AND QUAITY CHARACTERICS OF SUNFLOWER SEEDS "SAKHA 53" PLANTED IN NEW RECLAIMED LANDS
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Abstract: Field and laboratory studies were conducted in the two successive summer growing seasons of 2005 and 2006 in Klabshu Research station and in Oils and fats Res. Dept., Food Technology Research institute.
The aim of this study was to evaluate the effect of micronutrients mixture and N-levels (30,60,90 and120 Kg N/Fed) on growth, yield and yield components and quality parameters of sunflower variety namely Sakha 53 in sandy soil under drip irrigation system. This study was also conducted to evaluate the productivity of the new variety of sunflower in the Egyptian reclaimed lands and the effect of micronutrients and N-levels on oil, protein and phenols contents of sunflower seeds and their physicochemical characteristics; refractive index at 25°C (RI), viscosity at 25°C (RI), %free fatty acids (FFA), peroxide (PV), iodine values (IV) and unsaponifiable matter % (UNSAP). Fatty acids profile of sunflower seeds oil and their oxidative stability were also studied.
The obtained results showed that:
Increasing nitrogen fertilizer from 30 up to 120 N Kg/Fed increased significantly plant height, leaf area / plant, specific leaf weight, stem diameter, head diameter, 100-seed weight, seed yield/plant and seed yield / Fed.
Foliar spray method with micronutrients mixture of Fe, Zn and Mn increased significantly plant height, leaf area / plant while there were no significant variations concerning the other characters.
The interaction between foliar spray of micronutrients mixture and nitrogen fertilization showed no statistical effect on all characters under investigation.
The obtained results also showed that Sakha 53 variety proved its high productivity as a new variety, characterized with its high content of oil which reached up to 47.51%, in the Egyptian lands. Results also cleared that Sakha 53 had a high content of protein (25.9%) in both seasons. Physical and chemical characteristics (RI, Visc. at 25°C, IV and UNSAP%) were almost the same. Sunflower oil had low %FFA and PV (0.19-0.24% and 0.54-0.93meq/Kg oil), respectively.
Fatty acids profile of Sakha 53 showed that, the predominant saturated fatty acids were palmitic and stearic , while the predominant unsaturated fatty acids were oleic and linoleic. The oxidative stability of oils was varying in propotional to their fatty acids content.
Total phenols as mg/Kg caffeic acid of the seeds was ranged from 618-944 mg/Kg seeds regardless the harvesting seasons and nitrogen treatments.
HPLC analysis of phenols revealed that, the major phenol fractions of Sakha 53 seeds were chlorogenic, caffeic acids followed by protocatechic and vanillic acids.
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| Publication year |
2007
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| Pages |
615-633
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| Organization Name |
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| serial title |
Minia J. of Agric. Res. J Develop
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| Author(s) from ARC |
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| External authors (outside ARC) |
امال حسن سليم
قسم بحوث تكنولوجيا البذور – معهد بحوث المحاصيل الحقلية - مركز البحوث الزراعية– جيزة – مصر
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| Publication Type |
Journal
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