Zahrina Ida, Nasikin Mohammad, Krisanti Elsa, Mulia Kamarza
Department of Chemical Engineering, Universitas Indonesia, Depok 16424, Indonesia; Department of Chemical Engineering, University of Riau, Pekanbaru 28293, Indonesia.
Department of Chemical Engineering, Universitas Indonesia, Depok 16424, Indonesia.
Food Chem. 2018 Feb 1;240:490-495. doi: 10.1016/j.foodchem.2017.07.132. Epub 2017 Jul 26.
In the palm oil industry, the deacidification process is performed by steam stripping which causes the loss of most of palm oil's natural antioxidants due to high temperature. The liquid-liquid extraction process which is carried out at low temperature is preferable in order to preserve these compounds. The use of hydrated ethanol can reduce the losses of antioxidants, but the ability of this solvent to extract free fatty acids also decreases. Betaine monohydrate-based natural deep eutectic solvents (NADES) have extensive potential for this process. The selectivity of these NADES was determined to select a preferable solvent. The betaine monohydrate-glycerol NADES in a molar ratio of 1:8 was determined to be the preferred solvent with the highest selectivity. This solvent has an efficiency of palmitic acid extraction of 34.14%, and the amount of antioxidants can be preserved in the refined palm oil up to 99%. The compounds are stable during extraction.
在棕榈油行业，脱酸过程通过蒸汽汽提进行，由于高温，这会导致棕榈油中大部分天然抗氧化剂流失。为了保留这些化合物，在低温下进行的液 - 液萃取过程更为可取。使用水合乙醇可以减少抗氧化剂的损失，但这种溶剂萃取游离脂肪酸的能力也会下降。基于甜菜碱一水合物的天然低共熔溶剂（NADES）在此过程中具有广泛的潜力。测定了这些NADES的选择性以选择更合适的溶剂。摩尔比为1:8的甜菜碱一水合物 - 甘油NADES被确定为具有最高选择性的首选溶剂。这种溶剂对棕榈酸的萃取效率为34.14%，并且在精炼棕榈油中抗氧化剂的含量可以保留高达99%。这些化合物在萃取过程中是稳定的。
