The seeds of three varieties of melon (Cucumis melo L.) from Bulgaria were analyzed for their chemical composition and a detailed study of their lipids was carried out. Chemical composition values were as follows: fat content ranged from 41.6 to 44.5%, protein 34.4 to 39.8%, crude fiber 4.5 to 8.5%, carbohydrates 8.2 to 12.7%, soluble sugars 3.7 to 4.2%, and minerals 4.6 to 5.1%. The content of sterols, phospholipids, and tocopherols in the oils was 0.6, 0.7-1.7%, and 435-828 mg/kg, respectively. The major fatty acid in lipids was linoleic (51.1-58.5%), followed by oleic acid (24.8-25.6%). The trilinolein (31.3-32.2%), oleo dilinolein (31.0-34.0%), and palmitoyl dilinolein (14.9-22.3%) have represented 80.0% from the total triglyceride composition of the melon seeds oil. β-Sitosterol predominated in both free and esterified sterols, being, respectively, 52.9-70.8 and 50.4-58.4%. Phosphatidylinositol (24.4-33.9%), phosphatidylcholine (23.0-33.1%), and phosphatidylethanolamine (8.4-17.1%) were the main phospholipids. Palmitic acid (34.4-61.7%) was the major fatty acid of the phospholipids, followed by oleic acid (8.9-27.2%). Linoleic acid (32.7-39.1%) was the main component among the fatty acids of the sterol esters, followed by oleic acid (25.1-30.7%). In the tocopherol fraction of melon seed oils, the main component γ-tocopherol varied from 71.4 to 91.5%.The group's main research activities are to lead investigations over the chemical and lipid composition of different animal fats and vegetable oils; determination of their biologically active components and the possibilities of their application in food, medicine, and cosmetic industry.The research reported in this paper could relates to wider projects as stabilization of melon seed oils with different natural antioxidants; determination of the best antioxidant for these oils following of subjecting the oils of long-term storage and investigating how their chemical and lipid composition change during the storage under different conditions.
PUBLIC INTEREST STATEMENTThe seeds of three melon varieties (Cucumis melo) from Bulgaria were analyzed for their chemical and lipid composition. Chemical composition consisted as follows: fats, proteins, crude fiber, carbohydrates, soluble sugar, and minerals. The lipid composition of melon seeds included fatty acids, sterols, phospholipids, and tocopherols. They take part in the biologically active components, which contribute to the natural preservation of the oils from auto-oxidation. The major fatty acid in lipids was linoleic, followed by oleic acid. The trilinolein, oleo dilinolein, and palmitoyl dilinolein have represented 80.0% from the total triglyceride composition of the oils. β-Sitosterol predominated in sterols. Phosphatidylinositol, phosphatidylcholine, and phosphatidylethanolamine were the main phospholipids. Palmitic and oleic acids were the major fatty acids of the phospholipids. Linoleic and oleic acids were the main components among the fatty acids of the sterol esters. The main component in tocopherol fracti...