TY - JOUR
T1 - Separation of free fatty acids from deodorizer distillates using choline hydrogen carbonate and supercritical carbon dioxide
AU - Rocha, Ângelo
AU - Lourenço, Nuno M T
AU - Vidinha, Pedro
AU - Simões, Pedro
AU - Paiva, Alexandre
N1 - WOS:000338408800003
PY - 2014/6/27
Y1 - 2014/6/27
N2 - One of the main problems of deodorizer distillates is the difficulty in separating free carboxylic fatty acids (FFA) from the remaining added-value components, such as squalene. A two-step novel strategy for the valorization of olive oil deodorizer distillate (OODD) is presented, based on the use of choline hydrogen carbonate and supercritical carbon dioxide (scCO2). In the first step, the FFA present in OODD were neutralized with choline hydrogen carbonate to form choline carboxylates. The choline carboxylates obtained are of interest to the cosmetic industry. Due to their ionic character, they are insoluble in scCO2. Therefore in the second step, the reaction mixture was subjected to extraction with scCO2 at 15 MPa, 313 K and a gas flow rate of 2 ml min-1, yielding an extract with a maximum FFA content of ca. 3% (w/w). A valorization supply chain of OODD is proposed.
AB - One of the main problems of deodorizer distillates is the difficulty in separating free carboxylic fatty acids (FFA) from the remaining added-value components, such as squalene. A two-step novel strategy for the valorization of olive oil deodorizer distillate (OODD) is presented, based on the use of choline hydrogen carbonate and supercritical carbon dioxide (scCO2). In the first step, the FFA present in OODD were neutralized with choline hydrogen carbonate to form choline carboxylates. The choline carboxylates obtained are of interest to the cosmetic industry. Due to their ionic character, they are insoluble in scCO2. Therefore in the second step, the reaction mixture was subjected to extraction with scCO2 at 15 MPa, 313 K and a gas flow rate of 2 ml min-1, yielding an extract with a maximum FFA content of ca. 3% (w/w). A valorization supply chain of OODD is proposed.
KW - Ionic liquids
KW - Olive oil deodorizer distillate
KW - Supercritical carbon dioxide
KW - Valorization
UR - http://www.scopus.com/inward/record.url?scp=84900401956&partnerID=8YFLogxK
U2 - 10.1016/j.seppur.2014.03.009
DO - 10.1016/j.seppur.2014.03.009
M3 - Article
AN - SCOPUS:84900401956
SN - 1383-5866
VL - 131
SP - 14
EP - 18
JO - Separation and Purification Technology
JF - Separation and Purification Technology
ER -