Determination of bioactive properties of some short day onion inbred lines produced in alata climate
AuthorGüven, Saime Buse
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CitationGüven, S.B. (2020). Determination of bioactive properties of some short day onion inbred lines produced in alata climate. (Yüksek Lisans Tezi) Niğde Ömer Halisdemir Üniversitesi , Fen Bilimleri Enstitüsü, Niğde
Onion is a widely consumed vegetable all around the world since ancient times. It is rich in nutritional polyphenolic compounds. Flavonoids, particularly quercetin, has been found in substantial amount in this family. The bioactive properties of onions play a crucial role in human health and are now became an important objective in onion breeding programs. In this study, pomological and phytochemical analyses were performed using 19 different short day onion genotypes produced under Alata conditions. Results showed that genotype means of the total soluble solid contents were 5.2 to 8.5 °Brix, while pyruvic acid had wide distribution in the range of 3.277 to 8.828 µM / mL. The total antioxidant capacity varied from 0.07 to 0.10 mM trolox equivalent / 100 mL and total anthocyanin results were between 0.0557 and 0.5556 mg / 100 mL. Total phenolic values were observed within the range of 12.01 and 32.50 mg gallic acid equivalent / 100 mL. Fructose values were found between 1.50 and 2.41 g / 100 g FW. Genotype effects for glucose and sucrose were not significantly different. Quercetin values were observed between 0.06 and 1.94 μg / 100 g FW. The data obtained in this study can further be used for the improvement of onion genotypes and in onion breeding and quality improvement programs.
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