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首页> 外文期刊>Separation and Purification Technology >Recovery of norbixin from a raw extraction solution of annatto pigments using colloidal gas aphrons (CGAs)
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Recovery of norbixin from a raw extraction solution of annatto pigments using colloidal gas aphrons (CGAs)

机译：使用胶体汽油（CGA）从安纳托色素的粗制提取液中回收诺比毒素

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Annatto dyes are widely used in food and are finding increasing interest also for their application in the pharmaceutical and cosmetics industry.Bixin is the main pigment extracted from annatto seeds and accounts for 80% of the carotenoids in the outer coat of the seeds;norbixin being the water-soluble form of the bixin.Typically annatto dyes are extracted from the seeds by mechanical means or solutions of alkali,edible oil or organic solvents,or a combination of the two depending on the desired final product.In this work CGAs are investigated as an alternative separation method for the recovery of norbixin from a raw extraction solution of annatto pigments in KOH.A volume of CGAs generated from a cationic surfactant (CTAB) solution is mixed with a volume of annatto solution and when the mixture is allowed to settle it separates into the top aphron phase and the bottom liquid phase.Potassium norbixinate presented in the annatto solution will interact with the surfactant in the aphron phase,which results in the effective separation of norbixin.Recovery = 94% was achieved at a CTAB to norbixin molar ratio of 3.3.In addition a mechanism of separation is proposed here based on the separation results with the cationic surfactant and an anionic surfactant (bis-2-ethyl hexyl sulfosuccinate,AOT) and measurements of surfactant to norbixin ratio in the aphron phase;electrostatic interactions between the surfactant and norbixin molecules result in the formation of a coloured complex and effective separation of norbixin.
机译：Annatto染料广泛用于食品中，并在制药和化妆品行业中也得到越来越多的关注，Bixin是从Annatto种子中提取的主要色素，占种子外皮中类胡萝卜素的80％;通常，通过机械手段或碱，食用油或有机溶剂的溶液，或根据所需的最终产物将两者结合使用，从种子中提取胭脂红染料。在这项工作中，对CGA进行了研究。作为一种从KOH中的安纳托色素原始提取溶液中回收降冰素的替代分离方法。将一定量的阳离子表面活性剂（CTAB）溶液生成的CGA与一定量的安纳托溶液混合，并在使混合物沉降时进行混合在安纳托溶液中存在的诺比辛酸钾将与顶部的phr相和底部的液相分离。当CTAB与诺比辛的摩尔比为3.3时，回收率达到94％。此外，基于阳离子表面活性剂和阴离子表面活性剂的分离结果，本文提出了一种分离机理（磺基琥珀酸二-2-乙基己基酯（AOT）的测量以及在氨纶相中测量表面活性剂与去甲毒素的比率;表面活性剂与去甲毒素分子之间的静电相互作用导致形成有色配合物并有效分离去甲毒素。

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