Effects of processing on physicochemical properties and fatty acid composition of Hibiscus sabdariffa seed oil

• Published in: Journal of the American Oil Chemists' Society Vol. 62; no. 4; pp. 728 - 730
• Main Authors: Sarojini, G, Rao, K.C, Tulpule, P.G, Lakshminarayana, G
• Format: Journal Article
• Language: English
• Published: Heidelberg Springer 01.04.1985
• Subjects: ACEITES VEGETALES; ACIDE GRAS; ACIDOS GRASOS; Applied sciences; Biological and medical sciences; Chemical industry and chemicals; CHEMICOPHYSICAL PROPERTIES; Exact sciences and technology; Fat industries; FATTY ACIDS; Food industries; Fundamental and applied biological sciences. Psychology; HIBISCUS SABDARIFFA; HUILE VEGETALE; INDE; INDIA; Manufacturing and processing; Oils and fats; PROCESAMIENTO; PROCESSING; PROPIEDADES FISICO-QUIMICAS; PROPRIETE PHYSICO-CHIMIQUE; TRAITEMENT; VEGETABLE OILS; Heat treatment; Raw materials; Vegetal oil; Properties; Refining; Fatty acids; Vegetable fat; Hydrogenation; Physical properties; Type; Treatment; Chemical treatment; Epoxide; Chemical composition; Manufacturing; Chemical properties
• ISSN: 0003-021X; 1558-9331
• DOI: 10.1007/BF03028740

Abstract Expeller pressed crude Hibiscus sabdariffa seed oil (mesta oil) is dark and most unappealing. On refining, the appearance of the oil is improved. The unusual fatty acids present in the H. sabdariffa seed oil, cyclopropene acids (malvalic C 18 H 32 O 2 and sterculic C 19 H 34 O 2 ) and epoxy oleic acid (C 18 H 32 O 3 ), are not reduced by refining. Partial hydrogenation did not reduce the epoxy oleic acid, but it eliminated the cyclopropene acids. Heating for 10 min was sufficient for complete elimination of cyclopropene acids, but heating up to 60 min did not affect the epoxy acid.