In:
Journal of the American Oil Chemists' Society, Wiley, Vol. 89, No. 12 ( 2012-12), p. 2269-2278
Abstract:
Supercritical CO 2 extraction (SC‐CO 2 ) of fenugreek ( Trigonella foenum ‐ graecum L.) seed oil and its chemical composition and antioxidant activity were investigated. A central composite design combined with response surface methodology was used to study extraction conditions including pressure, temperature, and time. The optimum extraction conditions were 28.5 MPa extraction pressure, 41 °C extraction temperature, and 118 min extraction time, where 3.78 % yield was predicted. Fenugreek seed oil extracted under optimum conditions by SC‐CO 2 was mainly composed of 28.3 % C18:3, 33.45 % C18:2, 9.89 % C16, 8.1 % C18:1, 3.7 % C18, 0.71 % C20, and 0.61 % C22. The fenugreek oil was rich in unsaturated fatty acids (nearly 70 % of the total fatty acids), and polyunsaturated fatty acids accounted for 61.42 % (mass percentage) of the total amount. The 2,2‐diphenyl‐1‐picrylhydrazyl radical‐scavenging activity increased from 12.5 to 88.4 % when the concentration was increased from 1 to 12 mg/ml. The reducing power of the seed oil was concentration‐dependent. The antioxidant activity of the supercritical fluid extraction extract was superior to those obtained by Soxhlet extraction.
Type of Medium:
Online Resource
ISSN:
0003-021X
,
1558-9331
DOI:
10.1007/s11746-012-2123-x
Language:
English
Publisher:
Wiley
Publication Date:
2012
detail.hit.zdb_id:
2041388-9
Permalink