Resumo

MURILLO-MENDEZ, Cristian Jahir; RAMIREZ-QUINTERO, Andrés Fernando; LOPEZ-GIRALDO, Luis Javier  e  CASTANEDA-RODAS, Maribel. Approach of a mathematical model of macroscopic characteristics of biowaxes of commercial interest produced from palm oil. Rev. ion [online]. 2022, vol.35, n.2, pp.59-69.  Epub 25-Abr-2023. ISSN 0120-100X.  https://doi.org/10.18273/revion.v35n2-2022005.

Biowax obtained by hydrotreatment of vegetable oils are used in the manufacture of cosmetic products. There are various works on the chemical composition of biowax. However, there are no reports of how its macroscopic properties change depending on the chemical composition. Therefore, this work consisted in implementing mathematical models to select biowaxes and predict their desirable characteristics for application in the cosmetic industry. Macroscopic properties (melting point and acidity, saponification, iodine indices) and chemical composition (waxy esters, fatty alcohols, fatty acids, acylglycerides and paraffins) were determined for 34 biowax samples. A descriptive statistical analysis was developed that allowed to organize the biowaxes according to their macroscopic properties, assigning a score related to the quality of the sample; on a scale out of 4, the scores varied between 1.5 and 3.25. Mathematical models were also proposed for each macroscopic property of biowaxes based on their chemical composition. Five biowaxes with the highest score were selected and the physicochemical parameters were calculated through the obtained models, observing a model error of less than 6 % in the melting point and acidity index. These selected biowaxes could be used in the formulation of cosmetics of commercial interest.

Palavras-chave : Analytical Chemistry; Descriptive statistics; Hydrogenated palm oil; Hydrotreatment, Mathematical model.

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