Proximate, fatty acid and sterol compositions of aboriginal peanut (Arachis hypogaea L) seeds from Bolivia

Abstract

Oil, protein, ash, carbohydrate, iodine value, fatty acid and sterol compositions were studied in 46 aboriginal Arachis hypogaea cultivars originating from Bolivia. The oil and protein contents varied between 440 and 547 g kg(-1) and 242 and 547 g kg(-1), respectively. Results showed a lower protein content in the variety hypogaea (264.4 g kg(-1)) than in the varieties fastigiata (299.7 g kg(-1)) and peruviana (294 g kg(-1)). The carbohydrate content ranged between 86 and 216 g kg(-1). The principal fatty acids were oleic (358-536 g kg(-1)) and linoleic (250-462 g kg(-1)). The variety hypogaea exhibited higher concentrations of oleic acid (449.0 g kg(-1)). The sterol composition showed higher concentration of beta-sitosterol (554-632 g kg(-1)) following by campesterol (139-180 g kg(-1)), stigma-sterol (82-130g kg(-1)) and Delta(5)-avenasterol (86-138 g kg(-1)).