Bio-paraffin from Soybean Oil as Eco-friendly Alternative to Mineral Waxes

Abstract

Blends of fully and partial hydrogenated soybean oil, with 50/50 and 80/20 wt %, were chemically interesterified. The composition−texture relationships were investigated and established for the set of investigated materials. The raw materials, the original and interesterified blends, were analyzed in terms of their fatty acid and triacylglycerol compositions by gas chromatography. All materials were characterized by differential scanning calorimetry (DSC), polymorphic forms were characterized by X-ray diffraction (XRD), crystalline structures were characterized by polarized light microscopy (PLM), and textures were characterized by penetration testing. Interesterification caused a rearrangement of triacylglycerol species, reducing the concentration of trisaturated, triunsaturated, and diunsaturated triacylglycerols, increasing the amount of monounsaturated triacylglycerol, and resulting in a lowering of melting points as compared with the original blends. This modification in the chemical composition clearly changed the crystallization behavior, producing reductions in crystal size, alterations in crystalline polymorphism, and increases in plasticity in the blends. Interesterified materials displayed melting and textural characteristics suited for potential mineral wax substitutes.

Preliminary study of physicochemical, thermal, rheological, and interfacial properties of quinoa oil

“…According to Cofrades et al ., 107 the first endothermic manifestation is determined by the content of tri-unsaturated fatty acids (linolenic), as the melting point decreases with increased unsaturation of the fatty acid, indicating that a higher number of double bonds implies higher energy, and therefore, no energy is required for melting. 108 On the other hand, Romero et al ., 109 indicates that the first peak can be assigned to the fusion of one of the metastable polymorphic forms (unstable form) of a fat, and it is followed by a rearrangement of the molecules to form a new crystalline form that melts at higher temperatures. This can be correlated with the second peak (heating curve).…”

Lipase-Catalyzed Interesterification of Fully and Partially Hydrogenated Soybean Oil Blends for Bioparaffin Production

“…Unsaturated TAGs like PLO, PLL, OOO, OOL, OLL, and LLL decrease. Besides, new TAGs, not naturally present, were generated, such as SSL, SLO, and SSO. − …”

Synergistic combination between starch and proteins in the synthesis of new acrylic/biopolymers hybrid latexes

“…Some of the natural raw materials widely used in the chemical industry include vegetable oils, polysaccharides, and proteins, among others. [1][2][3] Sofía F. Cabrera, Agustina Pighin, and Martin L. Chiana contributed equally to this study.…”

“…The use of biobased feedstock could result in new materials with higher value‐added, lower toxicity and higher biodegradability. Some of the natural raw materials widely used in the chemical industry include vegetable oils, polysaccharides, and proteins, among others 1–3 …”