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Influence of water content of the pulp on the extraction and the physicochemical properties of Canarium schweinfurthii oil
Author(s) -
Tchiégang Clergé,
Leudeu Bertille Carine Tchankou,
Kapseu César,
Fomethe Anaclete,
Parmentier Michel
Publication year - 2004
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.200400952
Subject(s) - saponification value , iodine value , pulp (tooth) , water content , peroxide value , acid value , chemistry , saponification , moisture , extraction (chemistry) , pulp and paper industry , yield (engineering) , humidity , food science , chromatography , materials science , organic chemistry , composite material , biochemistry , medicine , physics , geotechnical engineering , pathology , engineering , thermodynamics
With the aim of contributing to the valorization of the Canarium schweinfurthii Engl. fruit pulp, through the extraction of its oil, we have studied the influence of the Canarium pulp's water content after drying at 45 °C on the yield of extraction using hexane. Furthermore we studied the physicochemical properties of the oil. It was observed that the oil's extraction yield is significantly influenced (p <0.01) by water content of the pulp. Maximum extraction yield (30.6 g fat/100 g) is obtained at a moisture content of 6.3%. The acid, saponification and peroxide values of the oils obtained were significantly influenced (p <0.05) by the humidity. The maximum acid values of 8.88 corresponded to a moisture content of 17.5%. Likewise, the saponification value showed a maximum of 154.1 for humidity content of 43.3% at the beginning of the drying step. The pulp oil's peroxide value initially at 3.7 meqO 2 /kg increased progressively until attaining 51.0 O 2 /kg at the end of drying. The iodine value was not influenced by humidity. A moisture content of 7.7% has been determined as the optimal value for optimizing both oil extraction yield and physicochemical property of the oil obtained.