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Optimization of the aqueous enzymatic extraction of oil from Iranian wild almond

AutorBalvardi, Mohammad; Rezaei, K.; Mendiola, J. A. ; Ibáñez, Elena
Palabras claveWild almond
Oil
Aqueous
Enzymatic
Extraction
Fecha de publicación2015
EditorSpringer
CitaciónJournal of the American Oil Chemists' Society 92(7): 985-992 (2015)
ResumenThe seeds of wild almond, Amygdalus scoparia, contain a relatively high quantity of oil. In the current study, aqueous enzymatic extraction of the oil from Iranian wild almond was investigated using a protease and a cellulase to assist the extraction process. The effects of temperature, incubation time and pH on the oil recovery were evaluated using Box-Behnken design from response surface methodology (RSM). A 77.3 % recovery was predicted for oil using aqueous enzymatic extraction procedure at the optimized conditions of RSM (pH 5.76; 50 °C/5 h) when both enzymes were used at 1.0 % level (v/w). In practice, when both enzymes were used, a maximum of 77.8 % oil recovery was achieved at pH 5; 50 °C/4 h. Fatty acid profile, refractive index and saponification value of the aqueous enzymatic extracted oil in the current study were similar to those of the oil extracted with hexane. However, acid value, unsaponifiable matter and p-anisidine value were higher when compared to those with hexane extracted oil. Peroxide value of the aqueous enzymatic oil was lower than that of oil extracted by hexane. Aqueous enzymatic extraction can be suggested as an environmentally-friendly method to obtain oil from wild almond.
URIhttp://hdl.handle.net/10261/149936
DOI10.1007/s11746-015-2671-y
Identificadoresdoi: 10.1007/s11746-015-2671-y
issn: 0003-021X
e-issn: 1558-9331
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