Impact of harvest times on the quality characteristics of oils recovered from different safflower (Carthamus tinctorius) cultivars sown in spring and autumn

• Published in: European food research & technology Vol. 242; no. 3; pp. 371 - 381
• Main Authors: Cosge Senkal, Belgin, Kiralan, Mustafa, Ramadan, Mohamed Fawzy
• Format: Journal Article
• Language: English
• Published: Berlin/Heidelberg Springer Berlin Heidelberg 01-03-2016; Springer Nature B.V
• Subjects: Agriculture; Analytical Chemistry; Autumn; Biotechnology; Carthamus tinctorius; Chemistry; Chemistry and Materials Science; Cultivars; fatty acid composition; Fatty acids; flowering; food research; Food Science; Forestry; free radical scavengers; Harvest; harvest date; lipid content; Moisture content; Oils & fats; oilseeds; Original Paper; oxidative stability; peroxide value; Physicochemical properties; seed oils; Seeds; sowing date; Spring; Studies; Vegetable oils; water content; Turkey; Radical scavenging activity; Sowing date; Oil content; Fatty acid; Oil stability
• ISSN: 1438-2377; 1438-2385
• DOI: 10.1007/s00217-015-2547-2

This study was carried out to investigate the impact of harvest time (HT) and sowing time (ST) on the oil content, fatty acid composition, physicochemical properties, antiradical potential and oxidative stability of oils recovered from different safflower cultivars. In this work, three safflower cultivars (cv. Yenice, cv. Dinçer and cv. Remzibey-05) were grown in spring and autumn and harvested at three different times (2 weeks after flowering, 4 weeks after flowering and at maturity). Examined parameters of safflower seeds and oil samples from different cultivars varied according to cultivar, ST and HT. Moisture content was higher in the seeds from autumn sowing than spring sowing. The highest oil content (25.8 %) was recorded for Dinçer cultivar. The main four fatty acids (palmitic, stearic, oleic and linoleic) accounted for about 99 % of total fatty acids. The peroxide value PV (0.72 meqO₂/kg) of oil from autumn sowing was higher than the PV (0.46 meqO₂/kg) from spring sowing. Rancimat value of seed oil from Remzibey-05 (6.38 h) cultivar was the highest followed by Yenice (5.08 h) and Dinçer (5.41 h) cultivars. The radical scavenging activity (76.8 %) of the oils from spring sowing was higher than the radical scavenging activity (73.0 %) of the oils from autumn sowing. The findings showed that the oxidative stability of oils from autumn sowing was stronger than that of oils from spring sowing. In addition, delaying HT has decreased oxidative stability of oils.