Biocatalytic production of biolubricants: Strategies, problems and future trends

Monteiro, Rodolpho R. C.; Berenguer-Murcia, Ángel; Rocha-Martín, Javier; Vieira, Rodrigo Silveira; Fernández-Lafuente, Roberto

doi:10.1016/j.biotechadv.2023.108215

Cited by 23 publications

(4 citation statements)

References 305 publications

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“…Lipases can be used for different purposes and chemical routes, such as esterification, transesterification, acidolysis, or amidations, among others, being stable in different solvents, such as aqueous, organic, or ionic [107][108][109]. In that sense, as explained in previous studies, transesterification with methanol to produce biodiesel has been successfully carried out, offering satisfactory results [64,110,111].…”

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confidence: 87%

“…Regarding lipases, their natural function is the hydrolysis of oils and fats to produce glycerol and free fatty acids, being one of the most resourceful enzymes in biocatalysis, as they are present in all organisms and their variety can offer different characteristics. Lipases can be used for different purposes and chemical routes, such as esterification, transesterification, acidolysis, or amidations, among others, being stable in different solvents, such as aqueous, organic, or ionic [107][108][109]. In that sense, as explained in previous studies, transesterification with methanol to produce biodiesel has been successfully carried out, offering satisfactory results [64,110,111].…”

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confidence: 87%

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A Review on Biolubricants Based on Vegetable Oils through Transesterification and the Role of Catalysts: Current Status and Future Trends

Nogales-Delgado,

Encinar,

González

2023

Catalysts

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The use of biolubricants as an alternative to petroleum-based products has played an important role in the last decade. Due to the encouragement of global policies, which mainly support green chemistry and circular economy, there has been an increasing interest in bio-based products, including biolubricants, from scientific and industrial points of view. Their raw materials, production, and characteristics might vary, as biolubricants present different applications for a wide range of practical uses, making this field a continuously changing subject of study by researchers. The aim of this work was to study biolubricant production from vegetable oil crops from a bio-refinery perspective, paying attention to the main raw materials used, the corresponding production methods (with a special focus on double transesterification), the role of catalysts and some techno-economic studies. Thus, the main factors affecting quality parameters such as viscosity or oxidative stability have been covered, including catalyst addition, reaction temperature, or the use of raw materials, reagents, or additives were also analyzed. In conclusion, the search for suitable raw materials, the use of heterogeneous catalysts to improve the effectiveness and efficiency of the process, and the optimization of chemical conditions seem to be the most interesting research lines according to the literature.

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confidence: 87%

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confidence: 87%

A Review on Biolubricants Based on Vegetable Oils through Transesterification and the Role of Catalysts: Current Status and Future Trends

Nogales-Delgado,

Encinar,

González

2023

Catalysts

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“…Lubricants derived from fatty acids are gathering renewed interest because of their biodegradability, availability from renewable resources, and potential use in new applications. , Oils obtained from natural materials have been used as lubricants for millennia, , and fatty acids were the first organic friction modifiers systematically investigated a century ago. − They were also found to cause corrosion of certain metals (lead, cadmium), especially at elevated temperatures, and were eventually replaced in many applications by linear alkylamines, amides, and esters. New plant-based lubricant systems are still being discovered, and the understanding of them has enabled synthetic advances .…”

Section: Introductionmentioning

confidence: 99%

Friction of Methyl-Branched Fatty Acid Layers at Low and High Sliding Speeds

Cui,

Diaz De La Cruz,

Gaur

et al. 2024

Langmuir

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The friction of methyl-branched fatty acids was studied with a surface forces apparatus (SFA) with attachments for low-speed (μm/s) and high-speed (cm/s) sliding. The systems studied were isooleic acid, a mixture of unsaturated C-18 isomers with one methyl group located along the chain, and isostearic acid, which consisted of saturated C-18 isomers with one methyl branch. The methyl group was expected to disrupt the close packing of the molecules in the pure substance and when adsorbed on a surface. The friction forces and friction coefficients were compared with results for stearic and oleic acid. Isostearic acid showed low friction at low speeds. At high speeds, a peak was found in the friction coefficient of both isostearic and isooleic acid layers, whereas a gradual increase in friction coefficient with speed was seen for oleic acid, suggesting different relaxation times of the structures formed on the surfaces.

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“…This is due to their robustness, lack of cofactors and wide specificity, and ability to accept a wide variety of substrates. Their high stability has enabled the use of lipases in a wide variety of reaction media (e.g., aqueous [7,8], organic solvents [2,9], supercritical fluids [10,11], ionic liquids [12][13][14][15][16], eutectic solvents [17,18], solvent-free systems [19]), and their variety of substrates permits to use them in a diversity of industrial areas [20] (wastewater treatment [21], food [22][23][24], energy [25,26], cosmetic [27], pharmaceutical [28][29][30], fine chemistry [31][32][33][34][35][36]). They can be used in hydrolysis [7,8], acidolysis [37,38], interesterifications [39,40], esterifications [19,41,42], transesterifications [25,43], amidations [44][45][46], etc.…”

Section: Introductionmentioning

confidence: 99%

Tuning Almond Lipase Features by Using Different Immobilization Supports

Cherni,

Carballares,

Siar

et al. 2024

Catalysts

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The lipase from Prunus dulcis almonds has been immobilized for the first time. For this purpose, two different supports, an octadecyl methacrylate particulate support, and aminated agarose (monoaminoethyl-N-aminoethyl) have been utilized. Both immobilized biocatalysts show improved enzyme stability, but great changes in enzyme specificity were detected. The enzyme immobilized via ion exchange maintained its activity intact versus p-nitrophenyl butyrate, while the enzyme immobilized on the hydrophobic support fully lost its activity versus this substrate, which was confirmed to be due to substrate adsorption on the support. However, this biocatalyst was much more active versus triacetin (more than 10-fold), R- or S- methyl mandelate at pH 7. At pH 9, a strong effect of using phosphate or bicarbonate as reaction buffers was detected. Using bicarbonate, the interfacially immobilized enzyme presented no activity versus R-isomer, but it was very active versus the S-isomer and triacetin. Using a phosphate buffer during the reaction, all compounds were recognized as substrates. The enzyme immobilized via ion exchange was significantly more active using phosphate; in fact, using bicarbonate, the enzyme was inactive versus both methyl mandelate isomers. This paper shows for the first time a great interaction between the effects of the immobilization protocol and buffer used during reaction on the enantiospecificity of lipases.

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Biocatalytic production of biolubricants: Strategies, problems and future trends

Cited by 23 publications

References 305 publications

A Review on Biolubricants Based on Vegetable Oils through Transesterification and the Role of Catalysts: Current Status and Future Trends

A Review on Biolubricants Based on Vegetable Oils through Transesterification and the Role of Catalysts: Current Status and Future Trends

Friction of Methyl-Branched Fatty Acid Layers at Low and High Sliding Speeds

Tuning Almond Lipase Features by Using Different Immobilization Supports

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