Use Of Vegetable Oils Research Articles

Experimentation on HCHCr steel using vegetable oil as dielectric in EDM

With simplicity and accuracy, conductive hard materials may be machined using the non-traditional material removal technique known as electrical discharge machining (EDM). In the present research endeavour, the influence of using vegetable oil (fresh vegetable oil (FVO), Used Vegetable Oil (UVO) and Mixed Vegetable Oil (MVO)) as an eco-friendly dielectric fluid during die sinking EDM of HCHCr steel has been investigated. Effects of several input variables, including current, pulse width, gap voltage, duty cycle, and using copper and copper chromium electrodes have been examined by employing the Taguchi L18 mixed orthogonal array (OA) technique, to assess the response in terms of Material Removal Rate (MRR), Tool Wear Rate (TWR), and Surface Roughness (SR).

Recycling of used vegetable oils by powder adsorption.

The treatment of used vegetable oil (UVO) with seven different adsorbents and through two different procedures (stirring and gravity filtration) was explored. Important differences in terms of density, turbidity, electrical resistance, free fatty acids (FFAs) content and relative fatty acid distribution were observed. Different outcomes were shown depending both on the adsorbent and on the procedure. Lower values of density and FFAs were registered for oils treated by gravity filtration with portland (respectively 0.6% and 0.81 g/ml) and celite (respectively 0.7% and 0.72 g/ml). Considering the undesired leaching from the powder to the oil, related to the turbidity, the celite resulted more suitable for the oil recycling (241 Nephelometric Turbidity Unit (NTU) for portland vs 184 NTU for celite). In addition, Fourier-transform infrared spectroscopy combined with multivariate analysis allowed to determine a chemical fingerprint relative characteristic of vegetable oils recycled by gravity or by adsorption by stirring.

Photo-Induced Preparation of Ag@MOF-801 Composite Based Heterogeneous Nanocatalyst for the Production of Biodiesel

Hybrid materials based on metal-organic frameworks (MOFs) and nanoparticles (NPs) have gained considerable popularity in a variety of applications. Particularly, these types of materials have demonstrated excellent efficiency in heterogeneous catalysis due to the synergistic effect between the components. Herein, we report a simple, eco-friendly, photocatalytic method for the fabrication of Zr containing MOF-801 and a silver (Ag) NPs-based hybrid (Ag@MOF-801). In this method, the photocatalytic property of the central metal ion (Zr) of MOF was exploited to promote the formation and deposition of Ag NPs on the surface of the MOF-801 under the irradiation of visible light. The successful incorporation of Ag NPs was ascertained by powder X-ray diffraction (XRD) and UV-Vis analysis, while the morphology and surface area of the sample was determined by N2 adsorption–desorption and scanning electron microscopy (SEM), respectively. The resulting Ag@MOF-801 hybrid served as a highly efficient catalyst for the transesterification of used vegetable oil (UVO) for the production of biodiesel. The Ag@MOF-801 catalyst exhibited superior catalytic activity compared to its pristine MOF-801 counterpart due to the enhanced surface area of the material.

Fumarate Based Metal–Organic Framework: An Effective Catalyst for the Transesterification of Used Vegetable Oil

Advancement of technology for the sustainable production of biodiesel is of significant importance in fighting against rising fuel costs due to the fast depletion of fossil fuels. In this regard, the application of highly efficient MOFs (metal–organic frameworks)-based materials as acidic, basic, or supported heterogeneous catalysts plays a crucial role in enhancing the efficiency of biodiesel production processes. In this report, we demonstrate the synthesis and catalytic application of Zr-fumarate-MOF (also known as MOF-801) as a heterogeneous catalyst for the transesterification reaction of used vegetable oil (UVO) for the production of biodiesel. The formation of MOF-801 and its structural stability is confirmed by a variety of characterization techniques including XRD, SEM, EDX, FT-IR, BET, and TGA analyses. The results revealed the formations of highly crystalline, cubic MOF-801 possessing thermal stability below 500 °C. The MOF-801 catalyst demonstrated moderate catalytic activity during transesterification of UVO (~60%) at 50 wt.% of methanol: oil, 10 wt.% catalyst loading, 180 °C reaction temperature, and 8 h of reaction time. Furthermore, the catalyst has exhibited adequate reusability with a slight reduction in the reaction yield of up to ~10% after three cycles.

Biodiesel Production and Characterization from Used Vegetable Oil

Biodiesel is a fuel produced from renewable resources; it is a clean alternative fuel, which has drawn the attention of energy researchers for the last two decades due to the disturbing effect of climate change caused by diesel fuel. This paper focuses on showcasing the qualities of biodiesel produced from used vegetable oil and the positive impact on the alarming change in climate today. This paper presents an experimental investigation on production of biodiesel from used vegetable oil (UVO) gotten from a road side bean cake (akara) seller. The oil that was intended to be thrown out was de-odoured and filtered to remove impurities. The filtered oil was then used for biodiesel production and characterized with physical and fuel properties such as density, viscosity, cloud point, refractive index, specific gravity, ash content, moisture content, flash point and cloud point. The results obtained were afterwards compared to ASTM (American Society for Testing and Materials) and EN (Europe’s) international standards. Two biodiesels samples were produced at different temperatures but the same timings. The biodiesel were produced at 700C at 40mins (biodiesel A) and 1000C at 40mins (biodiesel B) with values of specific gravity (0.98 kg/m3; 0.90 kg/m3), density (936kg/m3; 882kg/m3), kinematic viscosity (1.5mm/s2; 5.5 mm/s2), cloud point (150C; 20C), flash point (2600C min; 2000C min), moisture content (0.07%; 0.04%), refractive index (1.4609; 1.4398) and ash point (0.24%; 0.01%) respectively. On comparison, biodiesel A couldn’t match up to the international standards while biodiesel matched up to the standards given.

Biofuels from Diethyl Carbonate and Vegetable Oils for Use in Triple Blends with Diesel Fuel: Effect on Performance and Smoke Emissions of a Diesel Engine

The main objective of this work is to contribute to a gradual replacement process of fossil diesel (D) with biofuels composed by diethyl carbonate (DEC) and either sunflower or castor oil, as straight vegetable oils (SVOs). DEC is a very interesting candidate as an oxygenated additive not only because of its low price and renewable nature, but also its favorable fuel properties, such as very low kinematic viscosity, high cetane number, high oxygen content, rich cold flow properties and good miscibility with fossil diesel and vegetable oils. In this work, the more suitable DEC/SVO biofuels are chosen based on kinematic viscosity, according to the European normative. Additionally, the most relevant physical–chemical properties of (bio)fuels such as density, calorific value, cloud point, pour point and cetane number are determined. The influence of DEC on engine performance and exhaust emissions is analyzed by fueling a conventional Diesel engine with the different D/DEC/SVO triple and DEC/SVO double mixtures. The tests results are also compared with commercial diesel. From the results, it is concluded that Diesel engine fueled with the blends studied exhibits an excellent performance in terms of power output, very similar to diesel. Additionally, the use of these blends can remarkably decrease smoke emissions down to 98%, with respect to fossil diesel. The addition of DEC shows a significant improvement in cold flow properties of fuel mixtures in the exchange of a slightly higher brake specific fuel consumption (BSFC) than diesel. Interestingly, the pure biofuels composed by DEC and SVO allow for a suitable engine operation and achieve the lowest emissions, which means these blends can be successfully employed in current engines without adding fossil diesel, i.e., their use entail a 100% renewability.

Potential of Carica papaya peels as effective biocatalyst in the optimized parametric transesterification of used vegetable oil

This study investigates the effectiveness of a base heterogenous catalyst derived from waste Carica papaya peels in the transesterification of used vegetable oil (UVO). The calcined Carica papaya peels (CCPP) were characterised using scanning electron microscope-energy dispersive X-ray (SEM-EDX), X-ray diffraction (XRD) and Fourier transform infrared spectroscopy (FT-IR). The EDX result indicated that the ash contains various minerals with potassium (K) as the main active element in remove for the charge of the high catalytic activity. Response surface methodology (RSM) based on the Box Behnken design (BBD) was used to optimise and investigate the effect of the critical process parameters which include: the reaction time (50 – 70 min), catalyst loading (2.5 – 4.5 wt%) and methanol-to-oil molar ratio (9:1 – 15:1). The optimal reaction condition for the transesterification process was found to be catalyst loading of 3.5 wt%, methanol/oil molar ratio of 12:1, process reaction time of 60 min at constant reaction temperature of 65 <sup>o</sup>C which resulted in the maximum biodiesel yield of 97.5 wt%. The quality of the produced biodiesel was in agreement with ASTM standards. The catalyst was reused up to three times with minimal decrease in the catalytic activity in the biodiesel conversion. The study demonstrates the potential of waste biomass feedstocks in the production of sustainable biodiesel fuel.

Development and validation of a reduced chemical kinetic model for used vegetable oil biodiesel/1-Hexanol blend for engine application

In this study, a compact kinetic model consisting of 588 reactions and 139 species is proposed for 1-Hexanol and used vegetable oil (UVO) biodiesel blend for simulating internal combustion (IC) engines. Suitable modifications were made to the pre-exponential factor to ascertain predictive performance comparable to the investigational results. This reduced reaction model was validated with experimental data from the published work for laminar flames speed, ignition delay and species mole fractions. The reduced mechanism and the experimental results are comparable within a factor of 1.3–2.5. A zero-dimensional single zone model was employed for simulating internal combustion engine conditions with the reduced mechanism using Cantera software and the results are analogous and as expected from the simulation study. The reduced reaction mechanism could be utilized by the researchers working on alternative fuels to simulate and study the combustion of used vegetable oil/1-Hexanol blend in an engine using computational fluid dynamics (CFD) modeling software.

Synthesis of fatty acid methyl esters from used vegetable oil using activated anthill as catalyst

In this present study transesterification of used vegetable oil (UVO) using synthesized activated anthill as catalyst was investigated. The catalyst was prepared via calcination process, characterized by Brunauer-Emmett-Teller (BET), X-ray diffraction (XRD) and Fourier transform infrared (FTIR) techniques. From the BET analysis; calcination temperature has a positive impact on the textural properties. The XRD shows that the catalyst is crystalline in nature. Fatty acid methyl esters (FAME) was produced using thermally activated anthill as catalyst. The optimal FAME yield of 94.85 % was obtained at Methanol/Oil (M/O) 9:1, catalyst loading 1.5 wt%, reaction temperature of 65 ᵒ𝑪 and reaction time of 2 h. The physico-chemical properties of UVO – FAME produced was found to be within the American Society for Testing and Methods (ASTM). Hence, the study reveals that used vegetable oil catalyzed by novel activated anthill could be an effective feedstock to produce sustainable energy.
 Keywords: Anthills, FAME, Central composite design, Heterogeneous, used vegetable oil.

Biodiesel production from used vegetable oil and CaO catalyst impregnated with KNO<sub>3</sub> and NaNO<sub>3</sub>

The rise in global energy demand has encouraged exploring into other innovative methods of generating renewable fuels from different forms of waste. Due to its accessibility, culinary used vegetable oil is regarded as a potential source for profitable production of biodiesel. In the present study, the viability of producing biodiesel from used vegetable oil (UVO) by utilizing CaO catalyst (derived from the calcination of chicken eggshell and impregnated with KNO₃ and NaNO₃) was studied. Higher yield of biodiesel was obtained at methanol/oil mole ratio of (9–10) and CaO catalyst concentration of (2.0–3.0) wt/wt% Oil, for the three forms of catalyst used. Also, higher yield of biodiesel was obtained when CaO with impregnated KNO₃ was used, followed by the operation involving CaO with impregnated NaNO₃. At optimum conditions of methanol/oil mole ratio of 9 and catalyst concentration of 2.4 wt/wt% Oil, the yields of biodiesel obtained were 90% (for unimpregnated catalyst), 92% (using CaO impregnated with NaNO₃) and 95% (using CaO impregnated with KNO₃). The higher biodiesel yield obtained for CaO impregnated with KNO₃ (compared to the yield from CaO impregnated with NaNO₃) could be traced to a more reactive nature of potassium and arrangement of electrons of both potassium and sodium. The results of the tests and analysis on biodiesel properties reveal that quality biodiesel were produced from the three forms of catalyst used. This is because, each of the values of the properties considered falls within the ASTM standard.

A study of viscosity and thermal conductivity of vegetable oils as base cutting fluids for minimum quantity lubrication machining of difficult-to-cut metals

The properties of environmentally friendly, sustainable, and renewable cutting fluids are very important to effective machining of difficult-to-cut materials under minimum quantity lubrication (MQL). This paper presents the experimental investigation of viscosity and thermal conductivity of three vegetable oils for use as base cutting fluids: modified high oleic soybean oil (HOSO), refined low oleic soybean oil (LOSO), acculube LB2000 (LB2000) oil, and mineral oil–based emulsion cutting fluid (EC) as benchmark and at temperature from 25 to 70 °C. The results show that viscosity of all vegetable oils decreases exponentially with temperature, and are significantly higher than that of EC. HOSO shows an enhanced viscosity of 6.03% compared to LB2000, 25.69% compared to LOSO, and 4688.30% compared to EC at 30 °C temperature. Thermal conductivity of soybean oils and LB2000 is similar, decreases gradually from 0.192 to 0.179 W/mK, not significantly affected by temperature and very low compared to EC. EC increases from 0.698 to 1.857 W/mK between 25 and 50 °C and decreases from 1.857 to 0.762 W/mK between 50 and 70 °C. Critical temperature of EC is around 50 °C. Shear stress–shear rate plots of vegetable oils show linear relation typical of Newtonian fluids. The R-square of HOSO was greater than 0.99 at all investigated temperature and better than the observed values for LB2000, LOSO, and EC. HOSO with higher oleic fatty acid composition shows the most significant viscosity enhancement and oxidation stability, and is recommended as alternative to EC and based-cutting fluid for MQL machining.

Research of oxidative stability of vegetable oils for use in sport nutrition

The object of research is sunflower, high oleic sunflower and rapeseed oils, which are important in the production of food for people with increased physical activity. Such products should be balanced in component composition and enriched with biologically active substances, vitamins, antioxidants. Oils and fats are used as an important component of sport nutrition. Common oil is sunflower oil, which provides the diet with linoleic acid, as well as rapeseed oil, which enriches the products with linolenic acid. One of the most problematic places to use oils is oxidative damage, as this leads to the formation of hazardous compounds. During the study, the active oxygen method and the Oxitest device (Italy) were used. The first method allows to directly assess the content of oxidation products in the oil through the values of the peroxide value, the second method allows to measure oxygen consumption during oxidation processes in the oil.The oxidative stability of sunflower oil is studied using the active oxygen method and the oxidation method using the Oxitest device at a temperature of 110 °C. It is found that the induction periods determined by the two methods are close (2 hours 40 minutes and 2 hours 43 minutes, respectively). The regularity of reducing the induction period of sunflower oil with increasing temperature by the oxidation method on an Oxitest device is established. The temperatures of 90, 100 and 110 °C are used. A comparative study of the oxidative stability of sunflower, high oleic sunflower and rapeseed oils is carried out. Based on the obtained data, a comparative characteristic of the stability of research oils to oxidation is given and recommendations for their use in sports nutrition are given. The obtained data will allow to evaluate the effect of each of the experimental oils on the shelf life of the oil-containing product.

Transesterification of used vegetable oil using BaAl2O4 spinel as heterogeneous base catalyst

Present study aim to synthesize biodiesel using a heterogeneous base catalyst, barium aluminate (BaAl2O4) and used vegetable oil (UVO) feedstock via transesterification reaction. The catalyst was synthesized using co-precipitation route and characterized using techniques TG-DT analysis, XRD, FTIR, HRSEM-EDX, textural properties, and basicity. The best experimental condition of transesterification reaction was found at methanol to oil molar ratio 21:1, catalyst dose 4 wt%, reaction temperature of 65 ± 0.5 °C for 150 min of reaction duration and 600 rpm stirring rate which resulted in 93.28% conversion of methyl ester. Five cycle reusability of the synthesized catalyst after high-temperature regeneration was also investigated at optimized reaction conditions. Moreover, kinetics and thermodynamic studies of biodiesel synthesis reaction were also studied and Ea = 61.48 kJ/mol, A = 5.95 × 107 min−1, ΔH = 55.873 kJ mol−1, ΔS = -0.136 kJ mol−1 K−1, and ΔG (at 338 K) = 101.847 kJ mol−1 were obtained respectively. The important fuel properties such as acid value, density, kinematic viscosity (40 °C) calorific value, flash point, fire point, cloud point, pour point, and cetane number of synthesized biodiesel were analyzed and found satisfactory with ASTM D 6751 specifications. In addition, the green chemistry matrix E-factor and PMI values were also formulated.

Effects of dietary vegetable oils on the expression of eicosanoid receptors genes in Senegalese sole (Solea senegalensis) intestine

Vegetable oils (VO) are being extensively used as lipid sources in marine fish diets, due to the decreased availability of fish oil. The use of VO could induce some imbalances on essential fatty acids (EFAs) with the subsequent well described detrimental effects on fish immunity. EFAs are directly associated with several immune functions, acting as important elements for the fluidity of cytoplasmic membranes and as precursors of eicosanoids. At intestinal level, eicosanoids produced via cyclooxygenase (COX-2) enzymes are involved in gastrointestinal cyto-protection by influencing the homeostasis regulation and the onset of gut inflammation process through the action on eicosanoid receptors (EPs), which modulate gastrointestinal mucosal integrity amongst other functions. Senegalese sole is a flatfish with high susceptibility to deleterious effects due to stress and diseases and highly sensitive to changes in dietary fatty acids. In this study, Senegalese sole juveniles were fed diets (56% crude protein, 12% crude lipid) containing linseed (100LO), soybean (100SO) or fish (100FO) oils as unique oil source. Intestinal fatty acid composition plus relative expression of intestinal EPs and other genes related with eicosanoid cascade were determined after 90 days. Moreover, at the end of the experiment a stress test (5 min of net chasing) was carried out. The use of VO altered the fatty acid profile of intestine and the expression of EP genes. The use of SO (rich in n-6 fatty acids) induced an overexpression of cox-2 in basal (non-stress) situation, plus a down-regulation of intestinal ep4 gene expression. Besides, fish fed soybean oil in the diet seems to be unable to respond properly to chasing stress.

The Obtaining Biodiesel from Used Vegetable Oil and Animal Waste Oil by Two Stages Transesterification Reaction

The biodiesel was obtained from used vegetable oil (UVO) and animal waste oil (AWO) by the two stages transesterification reaction. Also chemical and technical properties of feed and products were determined. Conditions of transesterification reaction for each of the oil samples were determined as a result of several sets of experiments. The suitable conditions of transesterification reaction were the following. Hereto a molar ratio of oil: methanol: catalyst was 1: 6: 1/40, for 30 min, at temperature of 600°C. To obtain biodiesel directly by the one stage transesterification, in case of using UVO sample, when the acidity number of feed oil had to less than 3 mg KOH/g. The biodiesel from UVO and AWO was prepared by mixing 5, 10, 20% of volume in the summer and winter diesel fuel. However, the product from mixture of UVO and winter diesel fuel met the technique requirements both of winter and summer diesel fuel, but the product from mixture of AWO and summer diesel fuel did not satisfy technical requirements of diesel fuel.

Temperature dependence of thermal conductivity of vegetable oils for use in concentrated solar power plants, measured by 3omega hot wire method

Following the growing need for innovative heat transfer fluids in concentrated solar power (CSP) plants, the thermal conductivities of different vegetable oils (rapeseed, soybean, sunflower, palm, copra, cotton and jatropha) were measured in the temperature range from ambient to 230 °C relative to a reference oil. The small differences in the obtained thermal conductivities are influenced by the fatty acid composition. For balanced saturated/unsaturated fatty acids composition, the average thermal conductivity decreases from 0.167 Wm−1K−1 at 20 °C to 0.137 Wm−1K−1 at 230 °C. The use of a reference synthetic oil makes the calibration of the thermal probe unnecessary. The used method is based on a hot wire thermal probe with ac excitation and 3ω lock-in detection and has a long-term relative error of 1.2% and absolute accuracy of 2%. It allows measuring in real-time, continuously and independently, the thermophysical properties of oils for thermal applications.

Dietary vegetable oils: Effects on the expression of immune-related genes in Senegalese sole (Solea senegalensis) intestine

The decreased availability of fish oil, traditionally used as oil source in marine aquafeeds, has lead to the search for alternatives oils. Vegetable oils (VO) are being extensively used as lipid sources in marine fish diets, inducing an imbalance on certain dietary fatty acids. Alteration on the dietary ratio of w-6/w-3 has been described to have detrimental effects on fish immunity. Senegalese sole has high susceptibility to stress and diseases, and little is known on the effects of dietary VO on its immunity. In this study, Senegalese sole juveniles were fed diets (56% crude protein, 12% crude lipid) containing linseed (100LO), soybean (100SO) or fish (100FO) oils as unique oil source. Growth, cortisol and intestinal fatty acid composition were determined after 90 days. Moreover, at the final of the experiment a stress test (5 min of net chasing) was carried out. To evaluate the effect of diets and stress on intestine immunology, expression profiles of a set of 53 immune-related genes using RT-qPCR was also performed. The use of VO did not induced changes in fish growth, but affected fatty acid profile of intestine and expression of immune-related genes. The use of SO (rich in n-6 fatty acids) induced an over-expression of those genes related to complement pathway, recognizing pathogen associated to molecular patterns, defensive response against bacteria, defensive response against viruses, antigen differentiation, cytokines and their receptors. This general over-expression could indicate an activation of inflammatory processes in fish gut.When a stress was applied, a decrease of mRNA levels of different immune-related genes with respect to the unstressed control could be observed in fish fed 100FO. However, fish fed 100LO, with a higher ALA/LA ratio, seemed to ameliorate the effects of combined effects of FO substitution plus stressful situation whereas fish fed 100SO did not show this type of response.

CRACKING OF USED VEGETABLE OIL MIXED WITH POLYPROPYLENE WASTE IN THE PRESENCE OF ACTIVATED CARBON

With respect to high energy demand and increasing price of fossil fuels, alternative energy is a concerned issue worldwide. Waste cooking oils and plastic wastes are attractive as starting materials for value creation due to their high existing volumes and cost saving from waste treatment. Therefore, in this work, liquid fuel was synthesized by cracking of used vegetable oil (UVO) mixed with polypropylene waste (PP) in the presence of activated carbon from coconut shell. The reactions were studied at a constant hydrogen pressure of 0.1 MPa in a batch reactor. The weight ratios of used vegetable oil and polypropylene waste were varied at 30 : 70, 50 : 50 and 70 : 30 with activated carbon to raw materials ratios of 2.5 and 5 wt% at the reaction temperature of 390 and 430°C, and reaction time of 30 and 60 mins. The amounts of gas, liquid and solid fractions were analyzed. The highest yield of total liquid hydrocarbon product was attained at a ratio of used vegetable oil to polypropylene waste of 30 : 70 wt% with activated carbon to raw materials ratios of 2.5 wt%, reaction temperature of 430°C and reaction time of 30 mins. Under these conditions, gas, liquid and solid fractions of 19.56, 79.69 and 0.75 wt% were observed. The distribution of oil fractions in liquid product was analyzed by the simulated distillation gas chromatography based on ASTM D2887, which is the standard test method for the boiling-range distribution of petroleum fractions. It was comprised of naphtha, kerosene, light gas oils, heavy gas oils and long residue of 33.20, 14.62, 19.72, 2.49 and 9.66 wt%, respectively.

Effects of replacing dietary fish oil and squid liver oil with vegetable oils on the growth, tissue fatty acid profile and total carotenoids of the giant freshwater prawn, Macrobrachium rosenbergii

A feeding trial was conducted to investigate the complete substitution of either fish oil (FO) or squid liver oil (SLO) with crude palm oil (CPO), canola oil (CO) sunflower oil (SFO) or linseed oil (LO), as the sole added lipid source in diets fed to triplicate groups of giant freshwater prawn, Macrobrachium rosenbergii (initial weight = 0.42 ± 0.01 g) for 6 weeks. Prawns fed the CO or SLO diets showed significantly higher (P < 0.05) specific growth rate than those fed the FO or CPO diets. The feed conversion ratio of the prawns was significantly better when fed the CO diet, compared with the FO, CPO, SFO and LO diets. The muscle eicosapentaenoic acid content of prawns fed the vegetable oil (VO) diets were not significantly different (P > 0.05) from those fed the FO diet, although all VO-based diets led to a significantly lower docosahexaenoic acid content compared with prawns fed the FO or SLO diet. The whole-body total carotenoid content was significantly lower for prawns fed the SLO diet compared with prawns on the CO or CPO diets. The successful use of VO instead of marine-based oils in prawn diets will likely reduce feeding costs associated with M. rosenbergii aquaculture.

Development of combinations of chemically modified vegetable oils as pork backfat substitutes in sausages formulation

Today's consumers look for foods which provide nutrition and pleasure, while safeguarding their health, the result of which is that they increasingly avoid foods containing cholesterol and saturated and trans fatty acids. Chemically modified vegetable oils can help tailor meat products to meet this growing need and at the same time fulfil the technological needs of the meat processing industry. In this study, 16 backfat samples were characterised for their solid fat content (SFC) and melting point and these characteristics were used to design a mixture of chemically modified vegetable oils for use as a pork fat substitute for elaborating sausages. The mixtures were prepared with different vegetable oils bearing in mind with stearic acid content due to its close correlation with the SFC. The backfat was characterised as a function of its SFC and some modified vegetable oil mixtures were proposed, which led to a 10-20% diminution in saturated fatty acids and with a melting point similar to those observed in the backfat. The fatty acid profile pointed to a polyunsaturated/saturated fatty acids ratio higher than 0.4, and an n-6/n-3 fatty acid ratio of less than 4 in both modified vegetable oil mixtures proposed.