Nitrogen Fertilization Effects on Oil Content, Sucrose, α- Tocopherol, Fatty Acid and Aminoacid Compositions of Confectionary Sunflower Seed

Year 2025, Volume: 31 Issue: 1, 230 - 241, 14.01.2025

Öner Canavar , Hatice Kübra Gören

Abstract

This study investigates the effects of nitrogen fertilization on the composition of confectionary sunflower seeds, including parameters such as oil content, alpha-tocopherol, sucrose, amino acids and fatty acid composition. Nitrogen fertilization, surprisingly, had no significant effect on sunflower oil content, with remarkable differences observed between the genotypes. The α-tocopherol content, an important antioxidant, displayed responses that were dependent on the genotype upon application of nitrogen. The Somon Beyazı genotype consistently demonstrated higher oil content compared to the Ahmet Bey genotype. In addition, both genotypes showed a decrease in α-tocopherol levels as the application of nitrogen increased. Sucrose content was higher in the Somon Beyazı genotype and decreased significantly with increasing nitrogen doses. Significant variations were observed in fatty acid compositions, further emphasizing the impact of genotype and nitrogen application. The study also revealed diverse amino acid profiles, with notable concentrations of glutamine and asparagine. This comprehensive study highlights the complex interaction between genotype and nitrogen fertilization and provides valuable insights for optimising sunflower seed production and quality. The results emphasise the significance of integrating both genetic factors and nutrient management practices into crop cultivation for improved agricultural outcomes.

Keywords

Oil content, α-tocopherol, Sucrose, Amino acid profiles, Fatty acid composition.

References

• Abdel-Sabour M F & Abo El-Seoud M A (1996). Effects of organic-waste compost addition on sesame growth, yield, and chemical composition. Agriculture, Ecosystems & Environment 60(2-3): 157-164
• Açıkgöz N, Akba ME, Moghaddam A, Özcan K (1994). Turkish data-based statistics programmer for PC. Turkey Field Crops Congress, Ege University Press, pp. 264-267
• Ali A & Ullah S (2012). Effect of nitrogen on achene protein, oil, fatty acid profile, and yield of sunflower hybrids. Chilean Journal of Agricultural Research 72(4): 564-569
• Beltrán G, Aguilera M P, Del Río C, Sanchez S & Martínez L (2005). Influence of fruit ripening process on the natural antioxidant content of Hojiblanca virgin olive oils. Food Chemistry 89(2): 207-215
• Boydak E D, Karaaslan K & Türkoğlu H (2010). The effect of different nitrogen and irrigation levels on fatty acid composition of peanut oils. Turkish Journal of Field Crops 15: 29-33
• Bramley P M, Elmadfa I, Kafatos A, Kelly F J, Manios Y, Roxborough H E, Schuch W, Sheehy P J A & Wagner K H (2000). Vitamin E. Journal of the Science of Food and Agriculture 80: 913-938
• Duthie G G, Gonzalez B M, Morrice P C & Arthur J R (1991). Inhibitory effects of isomers of tocopherol on lipid peroxidation of microsomes from vitamin E-deficient rats. Free Radical Research Communications 15: 35-40
• Ghani A, Hussain M & Qureshi M S (2000). Effect of different irrigation regimens on the growth and yield of sunflower. International Journal of Agriculture and Biology 2: 334-335
• Gonzalez Perez P et al. (2015). Characterization of the amino acid composition of soils under organic and conventional management after addition of different fertilizers. Journal of Soils and Sediments 15: 890-901
• Jalilian J, Modarres-Sanavy S, Saberali S F & Sadat-Asilan K (2012). Effects of the combination of beneficial microbes and nitrogen on sunflower seed yields and seed quality traits under different irrigation regimes. Field Crops Research 127: 26-34
• Munir M A, Malik M A & Saleem M F (2007). Impact of integration of crop manuring and nitrogen application on growth, yield, and quality of spring planted sunflower (Helianthus annuus L.). Pakistan Journal of Botany 39: 441-449
• Nanjundappa G, Shivaraj B, Janarjuna S & Sridhara S (2001). Effect of organic and inorganic sources of nutrients applied alone or in combination on growth and yield of sunflower (Helianthus annuus L.). Helia 24(34): 115-120
• Nasim W A, Ahmad A, Bano R, Olatinwo M & Usman T (2012). Effect of nitrogen on yield and quality of sunflower (Helianthus annuus L.) hybrids under sub-humid conditions of Pakistan. American Journal of Plant Sciences 3: 243-251
• Naz S, Sherazi S T H & Talpur N (2011). Changes of total tocopherol and tocopherol species during sunflower oil processing. Journal of the American Oil Chemists' Society 88: 127-132
• Osman E B A & Awed M M M (2010). Response of sunflower to phosphorus and nitrogen fertilization under different plant spacing. Assiut University Bulletin for Environmental Research 13: 11-19
• Phanindra K S, Toprope V N & Thakur N R (2018). Genetic variability in mutant confectionary sunflower (Helianthus annuus L.). Journal of Research ANGRAU 46(2): 15-20
• Prasad D T (1990). Proteins of the phenolic extracted sunflower meal: I. Simple method for removal of polyphenolic components and characteristics of salt-soluble proteins. LWT-Food Science and Technology 23: 229-235.
• Roche J, Alignan M, Bouniols A, Cerny M, Mouloungi Z, Vear F & Merah O (2010). Fatty acid profile composition in sunflower seeds as affected by genotypes and environmental conditions. Food Chemistry 121: 990-995.
• Sharma S K & Gaur B L (1988). Effect of levels and methods of nitrogen application on seed yield and quality of sunflower. Indian Journal of Agricultural Sciences 33: 330-331
• Singh C N & Quadri S J S (1984). Note on response of sunflower to rates and time of nitrogen application. Journal of Agricultural Research 10: 76-77
• Steer B T, Hocking P J, Kortt A A & Roxburgh C M (1984). Nitrogen nutrition of sunflower (Helianthus annuus L.): Yield components, the timing of their establishment, and seed characteristics in response to nitrogen supply. Field Crops Research 9: 219-236
• Tan A S & Kaya Y (2019). Sunflower (Helianthus annuus L.) genetic resources, production, and research in Turkey. OCL 26: 21
• Tan A S, Aldemir M & Altunok A (2017). Yield potentials of some confectionery sunflower genotypes under ecological conditions of Menemen, Izmir. ETAE Dergisi / Anadolu Journal of AARI 1: 1-16 ((In Turkish)
• Tan A S, Altunok A & Aldemir M (2016). Oilseed and confectionary sunflower (Helianthus annuus L.) landraces of Turkey. In 19th International Sunflower Conference (pp. 556-566). Edirne, Turkey
• Valchovski I (2002). Influence of heavy rate of nitrogen fertilizer on oil content and fatty acid composition of different varieties and hybrids. Rasteniev dni Nauk 39(516): 338-341
• Wagner S C (2011). Biological nitrogen fixation. Nature Education Knowledge 2(11): 14