Chemical Composition of Seed Oils Recovered from Different Pear (Pyrus communis L.) Cultivars. (11th December 2015)

• Record Type: Journal Article
• Authors: Górnaś, Paweł; Rudzińska, Magdalena; Raczyk, Marianna; Mišina, Inga; Soliven, Arianne; Segliņa, Dalija
• Is Part Of: Journal of the American Oil Chemists' Society. Volume 93:Number 2(2016)
• Page Start: 267
• Page End: 274
• Publication Date: 2015-12-11
• Subjects: Pear (Pyrus communis L.) seed oil -- Fatty acids -- Tocopherols -- Carotenoids -- Sterols; Oils and fats -- Periodicals; Soap -- Periodicals; Fats -- Periodicals; Food-Processing Industry -- Periodicals; Acides gras -- Périodiques; Aliments -- Industrie et commerce -- Périodiques; Huiles et graisses -- Périodiques; Savon -- Périodiques; Oliën; Chemie; Oils and fats; Soap; Periodicals; 547.77
• DOI: 10.1007/s11746-015-2768-3
• Languages: English
• ISSNs: 0003-021X

Abstract

Abstract: Lipophilic bioactive compounds in oils recovered from the seeds of eight pear ( Pyrus communis L.) cultivars were studied. Oil yield in pear seeds ranged between 16.3 and 31.5 % (w/w) dw. The main fatty acids were palmitic acid (6.13–8.52 %), oleic acid (27.39–38.17 %) and linoleic acid (50.73–63.78 %), all three representing 96–99 % of the total detected fatty acids. The range of total tocochromanols was between 120.5 and 216.1 mg/100 g of oil. Independent of the cultivar, the γ‐tocopherol was the main tocochromanol and constituted approximately 88 %. The contents of the carotenoids and squalene were between 0.69–2.99 and 25.5–40.8 mg/100 g of oil, respectively. The β‐sitosterol constituted 83.4–87.6 % of total sterols contents, which ranged between 276.4 and 600.1 mg/100 g of oil. Three significant correlations were found between oil yield and total contents of sterols ( r = −0.893), tocochromanols ( r = −0.955) and carotenoids ( r = −0.685) in pear seed oils.