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Fatty acid composition and physicochemical properties of ostrich fat extracted by supercritical fluid extraction
Author(s) -
Liu Xuesong,
Wang Feng,
Liu Xin,
Chen Yong,
Wang Longhu
Publication year - 2011
Publication title -
european journal of lipid science and technology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.614
H-Index - 94
eISSN - 1438-9312
pISSN - 1438-7697
DOI - 10.1002/ejlt.201000434
Subject(s) - saponification value , chemistry , acid value , iodine value , peroxide value , saponification , food science , supercritical fluid , fatty acid , composition (language) , extraction (chemistry) , supercritical fluid extraction , chromatography , organic chemistry , biochemistry , linguistics , philosophy
The objective of this study was to determine the fatty acid composition and physicochemical properties of ostrich fat obtained by supercritical fluid extraction. The fatty acid composition was analysed by GC‐MS and the result revealed that ostrich fat contained 9‐octadecenoic acid (40.7 ± 0.3%), hexadecanoic acid (32.5 ± 0.3%), octadecanoic acid (7.43 ± 0.05%), 9, 12‐octadecadience acid (7.38 ± 0.02%) and 9‐hexadecenoic acid (7.13 ± 0.15%) as the major components. Furthermore, seven physicochemical indexes were assessed according to Chinese Pharmacopeia (2005) and relevant regulations as follows: relative density (0.92 ± 0.02%), melting point (34.7 ± 0.4°C), acid value (0.84 ± 0.02 mg KOH/g), peroxide value (0.10 ± 0.01 g/100 g), saponification value (226 ± 3 mg KOH/g), ester value (225 ± 3 mg KOH/g) and iodine value (74.6 ± 0.8 g I/100 g). It can be inferred from the basic information that ostrich fat is a promising raw material for the pharmaceutical and cosmetics industries. Practical applications : With the increasing attention being paid to ostrich fat, it is necessary to elucidate the fatty acid composition and physicochemical properties of this natural product. This basic information not only reveals the essential characteristics of ostrich fat, but also provides the data support for the quality evaluation and efficacy research.