Ivanov K, Popova M, Denev P, Kratchanov C
Hochschule für Lebensmittelindustrie, Plovdiv, Bulgaria.
Z Lebensm Unters Forsch. 1992 Nov;195(5):455-8. doi: 10.1007/BF01191717.
Laboratory experiments have been carried out for the removal of heavy metals from hydrogenated vegetable oils using hydrated polyuronides (degree of swelling from 4 to 12.8 ml/g) such as alginic acid, pectic and pectinic acids. The effect of the type of polyuronide, degree of esterification and oil treatment on the degree of demetalization has been studied. It has been shown that with increase in the degree of esterification of the polyuronide the efficiency of demetalization decreases. The second and third treatment of the hydrogenated oil with pectinic acid resulted in a high degree of heavy metal removal. The possibility of efficient demetalization of hydrogenated oils by treatment with water solutions of pectinic acids has also been demonstrated. The degree of metal ion removal increases with decreasing concentration of pectinic acids in the water solution.
已开展了实验室实验，以使用水合聚糖醛酸（溶胀度为4至12.8毫升/克），如海藻酸、果胶酸和果胶酯酸，从氢化植物油中去除重金属。研究了聚糖醛酸类型、酯化度和油处理对脱金属程度的影响。结果表明，随着聚糖醛酸酯化度的增加，脱金属效率降低。用果胶酯酸对氢化油进行二次和三次处理可实现高度的重金属去除。还证明了用果胶酯酸水溶液处理氢化油实现高效脱金属的可能性。金属离子去除程度随水溶液中果胶酯酸浓度的降低而增加。
