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首页> 外文期刊>European Journal of Lipid Science and Technology >Deacidification of Crude Hazelnut Oil Using Molecular Distillation - Multiobjective Optimization for Free Fatty Acids and Tocopherol
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Deacidification of Crude Hazelnut Oil Using Molecular Distillation - Multiobjective Optimization for Free Fatty Acids and Tocopherol

机译：用分子蒸馏 - 自由脂肪酸和生育酚使用分子蒸馏 - 多目标优化的粗榛子油进行脱发

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摘要

Hazelnut oil is a good source for its high oleic acid and tocopherol contents. Since tocopherols are beneficial compounds in human diet, preservation of tocopherols in oil plays a great role in refining process. The aim of this study is to determine the optimum molecular distillation conditions for deacidification of crude hazelnut oil at which free fatty acids (FFAs) are removed while tocopherols are preserved as much as possible. A short-path distillation column is used with evaporation temperatures ranging from 110 to 190 degrees C and vacuums from 0.05 to 5mmHg for deacidification. Multiobjective optimization is performed for minimizing tocopherol loss and maximizing FFA removal simultaneously. Results reveal that higher temperature and vacuums achieve more deacidification in residual oil. FFA content is reduced to 2.05% at 190 degrees C and 0.05 mmHg. On the other hand, tocopherol concentrations are considerably affected at this condition while they remain almost stable at other conditions. Optimized conditions for removal of FFAs and protecting of tocopherols in crude hazelnut oil are calculated as 188.65 degrees C and 0.14 mmHg. For verification, an additional distillation is carried out at the calculated conditions, and the results are found very close to that of optimized conditions.
机译：榛子油是其高油酸和生育酚含量的良好来源。由于生育酚是人类饮食中有益的化合物，因此油中的生育酚的保存在精炼过程中起着很大的作用。本研究的目的是确定粗榛子油脱酸化的最佳分子蒸馏条件，在该粗榛子油中除去游离脂肪酸（FFAs），同时尽可能地保留生育酚。短路蒸馏塔用于蒸发温度，范围为110至190℃，真空为0.05至5mmHg以进行脱酸。进行多目标优化以使生育酚损失最小化，并同时最大化FFA去除。结果表明，较高的温度和真空在残留油中实现了更脱髓。 FFA含量在190摄氏度和0.05 mmHg下减少到2.05％。另一方面，在这种情况下，生育酚浓度显着影响，而在其他条件下它们仍然几乎稳定。用于去除FFA的优化条件和粗糙榛子油中的生育酚的保护的条件计算为188.65摄氏度和0.14mmHg。为了验证，在计算的条件下进行额外的蒸馏，并且结果被发现非常接近优化条件。

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