Vegetable Oil Content Research Articles

Soil Physical Properties of Oil Palm Plantations in Tidal Areas of Peatland

Oil palm (Elaeis guineensis Jacq) is a plant with a higher vegetable oil content than other oil-producing plants, so palm oil is widely used as the main raw material for processed vegetable oil. The increasingly limited land area and the larger land area in Indonesia so that the space for plantation companies to expand the land is increasingly limited, so that the expansion of oil palm plantations began to change from optimal land to suboptimal land. Soil physical properties are properties related to the shape or original condition of the soil. This study aims to determine the physical properties of soil (texture, porosity, moisture content, soil color, particle density, and bulk density) on peatlands in the tidal area of PT Sinar Gunung Sawit Raya. This research used survey method with descriptive analysis. The soil samples taken were peat soil in the tidal area with purposive random sampling method at a depth of 30 cm. This research was conducted in November 2023 and continued in the laboratory for testing each soil physical properties. The results of the research on soil physical properties at PT Sinar Gunung Sawit Raya on peatlands in tidal areas show that the soil texture is loamy sand, soil porosity is good, moisture content is relatively normal, soil color looks relatively dark, particle density is still low and bulk density value shows low. Keywords: Loamy sand, Oil palm, Peat soil, Soil color, Soil texture.

Production of Rubber Seed Oil: Study of Parameters and some Food Oil Properties

Rubber seeds are one of the plantation commodities that are underutilized by the Indonesian people, apart from being the generative seeds of rubber trees. Rubber seeds have a reasonably high vegetable oil content of 68.53% with a carbohydrate content of 6.99%, protein content of 17.41%, and ash content of 3.08%. This study aimed to obtain food oil from rubber seeds with fewer chemicals and more affordable production costs. This study investigates the properties of food oil from rubber seeds and analyzes the cyanide content. The oil extracted using the traditional method yielded an 8.48% oil content. The rubber seeds were soaked for four days with rice husk charcoal (1:1) to reduce cyanide levels, followed by cooking to obtain the oil and bleaching with bentonite for purification. The oil was characterized according to Indonesian National Standards (SNI), assessing cyanide content, organoleptic properties, water content, acid values, and peroxide numbers. The resulting oil had a density of 0.87 g/cm³ and a cyanide content of 0.54 ppm. The tests showed a water content of 0.04%, an acid value of 0.4 mg NaOH/g, and organoleptic properties that met SNI standards. However, the peroxide value of 13.5 meq O2/kg was slightly above the standard, making the oil non-edible.

Revolutionizing Phenolic Content Determination in Vegetable Oils: A Cutting-Edge Approach Using Smartphone-Based Image Analysis.

This study addressed the need for a more accessible and efficient method of analyzing phenolic content in vegetable oils. The research aimed to develop a method that could be widely adopted by both researchers and industry professionals, ultimately revolutionizing the way phenolic content in vegetable oils is analyzed. This study developed a method of determining the total phenolic content (TPC) in vegetable oils using smartphone image analysis in the RGB color model. The method employed a gallic acid calibration solution and demonstrated exceptional determination coefficients for the RGB colors. The R-red color was selected as the basis for the analyses, and the method was statistically equivalent to standard UV/Vis spectrophotometry. The highest TPC was determined in hemp and olive oils, while the lowest was found in rice bran, grapeseed, and macadamia nut oils. This study concluded that smartphone image analysis, mainly using the R component of the RGB color model, was a superior alternative to traditional spectrophotometric methods for determining the TPC in vegetable oils. This innovative approach could revolutionize phenolic content analysis by providing researchers and industry professionals with a cost-effective, safe, and efficient tool. The estimated limit of detection (LOD) of 1.254 mg L-1 and limit of quantification (LOQ) of 3.801 mg L-1 further confirmed the reliability and comparability of the method. With these findings, it was expected that the method would be widely adopted in the future.

Tuning the properties of plant-based whipped cream through zein nanoparticles-sodium stearate complex

The fabrication of plant-based whipped creams is proposed to reduce the high saturated fat content of regular whipped creams by using plant proteins and unsaturated oils. The lack of functionality of regular plant proteins and the absence of crystals in vegetable oils make this process challenging. Here, we hypothesize that the functionality of corn protein zein can be improved by the creation of zein nanoparticles-sodium stearate complex (ZNP-SS), and that monoacylglyceride (MAG) based oleogels can increase the solid fat content of vegetable oils. Therefore, plant-based whipped cream can be produced from oil-in-water emulsions stabilized by ZNP-SS and MAG. A serial of ZNP-SS was produced and characterized in terms of molecular interactions, wettability, and surface activity. Moreover, their ability to stabilize oil-in-water emulsions and foams in the presence or absence of MAG was evaluated. Results show that ZNP-SS complex were stabilized through electrostatic and hydrophobic interactions. An increase in the amount of sodium stearate caused an increase in hydrophilicity, which improved the interfacial properties of ZNP-SS. Corn oil-in-water emulsions were successfully stabilized by all the ZNP-SS, while only the ones with the highest amount of sodium stearate (ZNP-0.6) were able to create stable whipped creams because of the partially coalesced oil droplets in the presence of MAG.

Energy-Efficient Dehydration Regimes for Agricultural Products with the Application of Suspension Heat Treatment

The aim of this study is to determine the energy-efficient dehydration regimes for agricultural products based on suspension heat treatment method. In order to achieve this goal, an electrical plant was designed, developed, tested, optimized and implemented, on the basis of which the research was carried out, applying in the drying process, namely the process of technological processing in suspension with the contribution of convection. The research was focused on the example of drying different agricultural products; in particular, the following products were selected as the main object of the research: hawthorn, apple, quince, pear and grape seeds. These agricultural products were selected as at the moment they were not fully exploited. Because of their rich content of vegetable oils with specific properties, they are of great interest to the food industry, traditional medicine, cosmetology, pharmacology, etc., and their drying using conventional methods is difficult, particularly because of defects and adverse reactions, which frequently occur in the technological processing. The main results obtained using the designed installation, are: reduction of the electricity consumption and the processing time, increase in the productivity and quality of the final products. The significance of the results obtained in the research lies in solving a number of problems currently faced by the processors, in connection with the improvement of equipment and increasing the efficiency of the drying process, mainly by increasing the energy efficiency, processing speed, quality of products and profitability.

Hydrocracking Rubber Seeds Oil for Biofuel Production Using Bifunctional Sarulla‐Derived Natural Zeolite–Ni and Ni–Mo/SNZ Catalyst

Rubber seeds, due to their rich vegetable oil content, emerge as a promising substrate for biofuel production. Harnessing the progressive catalytic hydrocracking methodology, this research delves into the activation of Sarulla‐derived natural zeolite followed by Ni and Ni–Mo metal impregnation, subsequently subjecting rubber seed oil to hydrocracking at 400, 450, and 500 °C under atmospheric pressure at 0.1 MPa. Zeolite characteristics undergo notable transformations postmetal impregnation. Importantly, at 500 °C, gasoline fraction selectivity exhibits superior efficacy, with the Ni/SNZ‐A catalyst demonstrating consistently high selectivity (>85%) across varied temperatures. Posthydrocracking reveals an amplification in n‐paraffin, aromatic, olefin, and methyl ester profiles to 19.6%, 7.3%, 25.7%, and 17.7%, respectively, contrasting the diminution of cycloparaffin, carboxylic acid, and ketones to 3.6%, 0.2%, and 2.5%, respectively. The aforementioned discoveries hold significant importance in the realm of further investigation into the generation of gasoline fractions through the utilization of natural zeolite catalysts and the incorporation of metals with lower mass, all conducted under atmospheric pressure conditions with the ultimate objective of mitigating production expenses.

LATEST INNOVATION: ECO-FRIENDLY SOLID SOAP FROM COCONUT, PALM, AND OLIVE OILS

Natural soaps made from vegetable ingredients are increasingly popular nowadays, especially those known as natural soaps. The vegetable oil content of plants makes it called natural) and its advantage lies in its ability to moisturize the skin without leaving potentially harmful chemical residues. The research method used is a laboratory experimental method using descriptive analysis, so that it can provide information regarding the manufacture of solid soap. In this research on making solid soap, a pH test analysis or degree of acidity was carried out. pH is used to determine the alkaline and acidic levels of a solution. Acidity is the concentration of hydrogen ions in the water solvent. Soap that has a high pH occurs due to soap hydrolysis. A good soap pH value is soap that has a pH of around 7. Organoleptic testing on solid soap that has been made is carried out by observing the aroma, amount of foam and texture of the soap. This test aims to determine the quality of the soap that has been made. Making organic solid soap is expected to be able to produce products that are safe and of course comfortable for the skin without any side effects and are environmentally friendly. Soap that has a high pH occurs due to soap hydrolysis.

Study of combustion characteristics of diesel-vegetable oil blends utilizing an industrial fuel burner

This study delves into the combustion characteristics of diesel-vegetable oil blends using an industrial fuel burner, shedding light on essential factors that impact the viability of these alternative fuels in industrial applications. Viscosity, a key concern in vegetable oil-based fuels, can be effectively mitigated by blending with diesel. This viscosity reduction enhances fuel atomization, optimizing combustion efficiency and mitigating nozzle blockages. The study also explores the density variation in these blends, indicating potential implications for combustion kinetics and injection dynamics. Furthermore, the research addresses the trade-off between energy content and viscosity reduction as the calorific value decreases with an increasing volume ratio of vegetable oil. Flame behavior, crucial for combustion system design, exhibits an inverse relationship with the volume ratio of vegetable oil, resulting in shorter and less intense flames at higher vegetable oil content. Through comprehensive experiments, the study demonstrates that increased vegetable oil content leads to reduced flame length and stability, primarily attributed to the elevated density and viscosity of vegetable oil. A comparative analysis highlights the similarity in combustion properties between a 40 % vegetable oil and a 60 % diesel blend, which exhibited a kinematic viscosity of approximately 1.58 cP emphasizing the potential of vegetable oil as a viable substitute for diesel in industrial fuel burners.

Study on rheological properties of POE/VO compound recycled asphalt.

In order to improve the high temperature performance of Vegetable oil recycled asphalt, this study used Polyolefin elastomer (POE) and vegetable oil (VO) to compound recycled aging asphalt. The properties of recycled asphalt were compared and analyzed by conventional physical properties and high & low temperature rheological tests. The results show that 8% VO content can achieve the best regeneration effect. Based on this VO dosage, a variety of POE/VO combination mixture schemes were designed and tested to obtain excellent deformation resistance of recycled aging asphalt under high temperature environments. The POE/VO combination with an appropriate dosage can restore the high temperature deformation resistance and elastic recovery performance even beyond the pre-aging level, and increase the critical temperature by 4~10°C. Considering the physical properties and rheological properties of asphalt, the recommended ratio of POE/VO composite recycled asphalt is 8% VO+4% POE and 8% VO+6% POE.

Detection of di(2-ethylhexyl) phthalate in edible vegetable oils using a sensitive aptasensor based on carbon nanomaterials and copper metal-organic framework

In this work, we designed a simple, disposable, highly sensitive electrochemical aptasensor to detect di(2-ethylhexyl) phthalate (DEHP) in edible vegetable oils. The aptasensor was created by decorating polyaniline multi-walled carbon nanotubes (PANI-MWCNTs), Cu metal-organic framework (CuMOF), and gold nanoparticles (AuNPs) on a screen printing carbon electrode (SPCE). With its large surface area, CuMOF modified the electrode by improving the adhesion rate of gold nanoparticles, thereby improving the detection limit of the sensor. The distinct peak in the square wave voltammetry (SWV) was used to measure DEHP. The sensor had high stability, excellent repeatability, reproducibility, and specificity, with a wide linear range (0.1–100 ng/mL) and a low detection limit (0.03 ng/mL). When the aptasensor was used to analyze the DEHP content in edible vegetable oils, the recovery rate was between 95.11 % and 98.29 %, and the results were consistent with the GC-MS measurements.

Studi Kinerja Mesin Diesel Berbahan Bakar Campuran Biodiesel Kacang Tanah Dan Solar

Biodiesel is an oil produced from vegetable oils or animal fats. Peanut is one of the vegetable that can be used to produce biodiesel due to its high vegetable oil content. This research was conducted to investigate fatty acid characteristics of biodiesel produced from peanut and perfomance of a diesel engine which is fueled by mixture of peanut biodiesel and diesel fuel. Biodiesel was produced by some processes namely degumming, free fatty acid content testing, esterification and transesterification. It was produced 1450 ml biodiesel per 10 kg peanuts. Gas chromatography-mass spectrometry device was used to determine fatty acid content of peanut biodiesel which consists of 52.77% of oleic acid, 16.59% of palmitic acid and 10.63% of behenic acid, respectively. Four mixtures of peanut biodiesel and diesel fuel were created, namely B0 (pure diesel fuel) , B5, B10, B20 where index number is percentage of biodiesel in the mixture. These mixtures were applied to fuel an engine diesel to observe engine perfomances with variation of load and speed on engine. The best engine perfomance result from experiments was found using B20 with spesific fuel consumption (SFC) value is 0.175 kg/kWh at 30 psi of load and 1250 rpm engine speed, the air-fuel ratio (AFR) is 15,26 at 20 psi of load and 1500 rpm engine speed and termal eficiency is 46.37 percent at 30 of load and 1250 rpm engine speed.

Raman spectroscopy coupled with metaheuristics-based variable selection models: A method for rapid determination of extra virgin olive oil content in vegetable blend oils

Vegetable blend oils play a vital role in the daily human diet, but they have become the target of forgeries. This work proposes a method for the rapid on-site quantification of high-value pure vegetable oil (e.g., extra virgin olive oil (EVOO)) content in vegetable blend oils by combining Raman spectroscopy and metaheuristics-based variable selection models. First, the corn oil-EVOO and peanut oil-EVOO vegetable blend oil samples were prepared for Raman spectra measurement. Then, partial least squares regression and four metaheuristics-based variable selection models, including genetic algorithm combined moving window (GA-MW), particle swarm optimization combined moving window (PSO-MW), grey wolf optimizer combined moving window (GWO-MW), and whale optimization algorithm combined moving window (WOA-MW), were applied to the collected Raman spectra for a comparative study. The method developed in this work could accurately quantify the EVOO content in vegetable blend oil samples. In addition, the stability tests and limit of detection values verified the stability and sensitivity of the developed method. Finally, two-tailed paired t-tests identified that there was no significant difference between the gas chromatography–mass spectrometry method and the developed method. Therefore, the developed method provides a rapid and cost-effective strategy for quantitative authentication of vegetable blend oils.

Risk assessment of 3-MCPD esters and glycidyl esters from the formulas for infants and young children up to 36 months of age

Esters of 2-monochloropropane-1,2-diol (2-MCPD), 3- monochloropropane-1,2-diol (3-MCPD), and glycidol are present in infant formulas, follow-on foods and similar compositions. They arise mainly from the vegetable oil content and may cause harmful effects in consumers. The contents of these substances in formulas were determined indirectly by converting the esters to the free form, followed by derivatization and analysis by gas chromatography-tandem mass spectrometry (GC-MS/MS). The validation results demonstrate that the method had sufficient specificity and adequate accuracy. The limits of detection (LOD) and limits of quantification (LOQ) for each of 2­MCPDE, 3­MCPDE, and GE were 1.5 and 5 µg/kg, respectively. Formula intake by children up to 36 months of age was surveyed, and the data was used to assess the risks due to 3-MCPD esters (3-MCPDE) and glycidyl esters (GE). The mean exposure dose of 3-MCPDE for different age groups ranged from 0.51 to 1.13 µg/kg bw per day. The corresponding mean GE exposure ranged from 0.031 to 0.069 µg/kg bw per day. Neither mean values nor the percentile 95% values of 3-MCPDE exposure doses exceed the recommended provisional maximum tolerable daily intake (PMTDI).

NMR and GPC Analysis of Alkyd Resins: Influence of Synthesis Method, Vegetable Oil and Polyol Content.

Alkyd resins are oil-based polymers that have been widely used for generations in the surface coating industry and beyond. Characterization of these resins is of high importance to understand the influence of its components on its behavior, compatibility with other resins, and final quality to ensure high durability. Here, NMR spectroscopy and GPC were used for characterizing differences in the chemical structure, molecular distribution, and dispersity between oil-based and fatty acid-based alkyd polymers made from sacha inchi and linseed oils. Sancha inchi (Plukentia volubilis L.) is a fruit-bearing plant native to South America and the Caribbean, and has a rich unsaturated fatty acid content. The effect of vegetable oil and polyol selection on the synthesis of alkyd resins for coating applications was analyzed. The influence of two different synthesis methods, monoglyceride and fatty acid processes, was also compared. Important structural differences were observed using NMR: one-dimensional spectra revealed the degree of unsaturated fatty acid chains along the polyester backbone, whereas, 2D NMR experiments facilitated chemical shift assignments of all signals. GPC analysis suggested that alkyd resins with homogeneous and high molecular weights can be obtained with the fatty acid process, and that resins containing pentaerythritol may have uniform chain lengths.

Design of high-monounsaturated fatty acid soybean seed oil using GmPDCTs knockout via a CRISPR-Cas9 system.

Design of high-monounsaturated fatty acid soybean seed oil using GmPDCTs knockout via a CRISPR-Cas9 system.

Topological network design toward high‐performance vegetable oil–based elastomers

AbstractAs a kind of bio‐derived feedstock, vegetable oil (VO) shows great potential to replace petroleum‐based monomers to develop sustainable polymer materials because of its easy availability, low cost, bio‐renewable, and environmentally friendly nature. However, due to the high cross‐linking density and amorphous nature, directly cured VOs generally tend to be brittle and weak. To date, it is still difficult to adopt VOs and their derivatives as structural materials to prepare high‐performance elastomers. To address this important issue, a multi‐scale topology design strategy was proposed in this work. First, topology regulation and functionalization of VO‐based networks were realized by managing functional groups proportion during the bulk polymerization of epoxidized soybean oil with dimer fatty acids. Furthermore, a second polymer (SN) network was introduced into the VO‐based network as a protective layer via interfacial cross‐links. The generated VO‐based elastomers (VOEs) exhibit unprecedented comprehensive properties (VO content ≥70 wt.%, Tg as low as −24.4°C, toughness up to 6.8 MJ/m3). Besides, the VOEs also exhibit excellent reprocessability and self‐healing capability. Overall, this work developed a novel kind of VOEs with significant comprehensive advantages and provided important inspiration for the preparation of high‐performance elastomers through multi‐scale topology regulation.

Mercury Exposure from the Consumption of Dietary Supplements Containing Vegetable, Cod Liver, and Shark Liver Oils.

Vegetable and fish oils constitute a significant part of all dietary supplements. Due to increasing environmental pollution, the raw materials used for their production may be contaminated with toxic substances, including metals. The aim of the present study was to determine the mercury (Hg) content in vegetable oils, shark liver oils, and cod liver oils. The tests conducted were to help determine the level of mercury contamination of the tested preparations and the related potential threat to human health. The amount of Hg in the tested dietary supplements was compared, and the amount of the metal consumed at various times of use was determined. A total of 36 preparations of dietary supplements available on the Polish market were used for the study. The method of atomic absorption spectrometry using the amalgamation technique was used for the determinations (AMA 254, Altec, Czech Republic). Among the sample of all of the tested preparations, the Hg concentration ranged from 0.023 to 0.427 µg/kg, with an average of 0.165 µg/kg. Differences in Hg content in the various tested preparations (shark liver oil, cod liver oil, and vegetable oils) were statistically significant. The average concentration of Hg in the vegetable oils (0.218 µg/kg) was more than twice that of the cod liver oils (0.106 µg/kg) and shark liver oils (0.065 µg/kg). In none of the tested preparations did the amount of Hg exceed the acceptable standard for dietary supplements (0.10 mg/kg). The analysis showed that the Hg content in vegetable oils, shark liver oils, and fish oils from the Polish market is at a low level, guaranteeing the safety of their use, and as such, they do not pose a threat to health.

Molecular Dynamics Study on the Diffusion Behavior of Water Molecules and the Dielectric Constant of Vegetable/Mineral Oil Blends.

Insulating oil plays a crucial role in internal insulation of oil-impregnated transformers. It has been demonstrated in a variety of experimental studies that mineral oil (MO) and vegetable oil (VO) can be blended in different ratios to improve insulation properties; however, the mechanisms underlying this phenomenon remain unclear. In this study, a molecular dynamics (MD) simulation approach was used to investigate diffusion of water molecules in VO/MO blends and dielectric constants of a mixture. The results show that the diffusion coefficient of water molecules is negatively correlated with the proportion of VO; thus, addition of VO helps to improve the insulation properties of a mixture. Due to introduction of strong polar functional groups, a decrease in the diffusion behavior of water molecules can be attributed to an increase in the interaction energy and formation of hydrogen bonds between water molecules and the mixed oil system. There is a direct correlation between the dielectric constant of a mixture and VO content; however, it is very sensitive to water content. The presence of strong polar water molecules or functional groups in a mixture leads to an increase in the dielectric constant, which results in a reduction in insulating properties. Accordingly, presence of polar groups plays an important role in determining the insulating properties of a mixture. To increase the insulation performance of a mixture, it is important to consider the diffusion-inhibiting and dielectric effects of the stronger polar groups in vegetable oil compared to those in mineral oil.

Paper Spray Tandem Mass Spectrometry for Assessing Oleic, Linoleic and Linolenic Acid Content in Edible Vegetable Oils

Oleic, linoleic and linolenic acids exert several beneficial effects on human health, some of which are also certified by recent European and U.S. regulations. The goal of the presented work was to develop an innovative methodology to evaluate their content in edible vegetable oils, in order to increase the value of oils from a nutraceutical perspective. The protocol is based on the use of paper spray ionization coupled with tandem mass spectrometry experiments, which allowed the recording of data very quickly and with high specificity. All investigated compounds gained a good linear relation (r2 higher than 0.98). Accuracy values are near 100% for all concentration levels examined, and the repeatability and reproducibility data result lower than 15%, highlighting the consistence of the methodology. The developed approach was successfully applied for the analysis of different real samples, and its robustness was confirmed by comparing the results obtained with those coming from the classical and official methodology.

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During the research aimed at reducing the cost price of poultry feed and increasing their productivity lysofort bio-emulator and L-carnitine supplement were used. 4 groups of ROSS-308 broilers were made (100 heads each). The control group received feed portion corresponding to the nutrition value of ROSS-308 cross boiler feed, containing defined content of exchange energy (in the initial phase-3050 kcal/kg, in the growth period-3100 kcal/kg, and in the final stage-3200 kcal/kg). In the experimental groups, the efficiency of the exchange energy was artificially reduced, mostly due to low content of vegetable oil. Feed conversion, head maintenance, live broiler chickens of different ages, growth dynamics, average daily weight growth, meat qualities of slaughtered poultry were studied in all groups. According to the research results, compared with the control group, the indicators of feed conversion and average daily weight growth of broiler chicken fed by portions containing bio-emulator and L-carnitine were improved, which testifies to the increase in the availability of energy. Due to the synergy of joint application of bio-emulators and L-carnitine, feed conversion is improved, production costs and cost price are reduced, the productivity of broilers is increased, as well as the profitability of poultry production (not at the cost of increasing the consumer prices) and meat quality is improved (as a result of increasing the amount of protein and reducing fat). As an efficient and safe means to increase the profitability of poultry production, the bio-emulators and L-carnitine can be used in the feed of meat poultry.