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Journal articles on the topic 'Sunflower soapstock'

Author: Grafiati

Published: 5 June 2025

Last updated: 1 August 2025

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1

Viktoriia, Kalyna, Stankevych Serhii, Myronenko Liliia, et al. "Improvement of the technology of fatty acids obtaining from oil and fat production waste." Eastern-European Journal of Enterprise Technologies 2, no. 6 (116) (2022): 6–12. https://doi.org/10.15587/1729-4061.2022.254358.

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Fatty acids are an important component in the pharmaceutical, food, chemical industries. The production of various types of products requires a certain purity and quality of fatty acids. To obtain these compounds, it is promising to use soapstocks, which are waste products of alkaline refining of oils. The peculiarity of the work lies in determining the effect of the process parameters of soapstock decomposition with sulfuric acid on the saponification number, which is an important production characteristic of fatty acids. The study used sunflower soapstock according to DSTU 5033 (CAS 68952-95

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2

Kalyna, Viktoriia, Serhii Stankevych, Liliia Myronenko, et al. "Improvement of the technology of fatty acids obtaining from oil and fat production waste." Eastern-European Journal of Enterprise Technologies 2, no. 6 (116) (2022): 6–12. http://dx.doi.org/10.15587/1729-4061.2022.254358.

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Fatty acids are an important component in the pharmaceutical, food, chemical industries. The production of various types of products requires a certain purity and quality of fatty acids. To obtain these compounds, it is promising to use soapstocks, which are waste products of alkaline refining of oils. The peculiarity of the work lies in determining the effect of the process parameters of soapstock decomposition with sulfuric acid on the saponification number, which is an important production characteristic of fatty acids. The study used sunflower soapstock according to DSTU 5033 (CAS 68952-95

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3

Sytnik, Natalia, Ekaterina Kunitsia, Viktoria Mazaeva, et al. "Rational conditions of fatty acids obtaining by soapstock treatment with sulfuric acid." Eastern-European Journal of Enterprise Technologies 4, no. 6(112) (2021): 6–13. http://dx.doi.org/10.15587/1729-4061.2021.236984.

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As a result of alkaline neutralization of oils, a significant amount of soapstock is formed, the utilization of which creates an environmental and economic problem. The production of fatty acids from soapstock using sulfuric acid decomposition is investigated in this work. The peculiarity of the work is the determination of regression dependences of the yield and neutralization number of fatty acids on the soapstock processing conditions: temperature and duration. Soapstock obtained after neutralization of sunflower oil was used as raw material. Soapstock indicators: mass fraction of moisture

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4

Natalia, Sytnik, Kunitsia Ekaterina, Mazaeva Viktoria, et al. "Rational conditions of fatty acids obtaining by soapstock treatment with sulfuric acid." Eastern-European Journal of Enterprise Technologies 4, no. 6 (112) (2021): 6–13. https://doi.org/10.15587/1729-4061.2021.236984.

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As a result of alkaline neutralization of oils, a significant amount of soapstock is formed, the utilization of which creates an environmental and economic problem. The production of fatty acids from soapstock using sulfuric acid decomposition is investigated in this work. The peculiarity of the work is the determination of regression dependences of the yield and neutralization number of fatty acids on the soapstock processing conditions: temperature and duration. Soapstock obtained after neutralization of sunflower oil was used as raw material. Soapstock indicators: mass fraction of moisture

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5

Birta, Gabriella, Nadiya Levoshko, Vladyslav Knysh, et al. "Identifying of rational conditions for etherification of sunflower soapstock fatty acids." Eastern-European Journal of Enterprise Technologies 2, no. 6 (134) (2025): 6–13. https://doi.org/10.15587/1729-4061.2025.326031.

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The object of the study is the process of esterification of sunflower soapstock fatty acids with butanol. Soapstock is a waste of the oil and fat industry, which is formed in the process of alkaline neutralization of oils. The processing of soapstock to obtain fatty acids is promising, since the disposal of waste is difficult and dangerous, and fatty acids are an industrially valuable product. Fatty acids obtained from soapstock are an available raw material for the production of fatty acid esters of low molecular weight alcohols, which are the basis of alternative biodiesel fuel. The influenc

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6

Prokof ev, Y. I., T. N. Poyarkova, A. R. Bykov, A. S. Shestakov, V. A. Kuznetsov, and O. G. Androsova. " Influence of the isolation method of the soapstockfatty component on its characteristics." Research in Agricultural Engineering 61, No. 3 (2016): 111–15. http://dx.doi.org/10.17221/20/2014-rae.

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From soapstock, which is a waste product of sunflower oil production, the fatty component was isolated using isopropyl alcohol, toluene, fusel oil and a mixture of common salt and nonionic surfactants. With the help of the Langmuir film balance the molecular areas of isolated fats were found and the degree of hydrophobization in comparison with the original soapstock was evaluated. It was found that the strongest compression of the monolayer is observed when using fusel oil. The surface active properties of emulsifiers, synthesized by alkaline hydrolysis method on the basis of the obtained fat

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7

Kalyna, Viktoriia, Vitalii Koshulko, Olha Ilinska, et al. "Development of soapstock processing technology to ensure waste-free and safe production." Eastern-European Journal of Enterprise Technologies 6, no. 10 (114) (2021): 23–29. http://dx.doi.org/10.15587/1729-4061.2021.245094.

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Soapstock is a large-tonnage waste of the oil and fat industry, the disposal of which is environmentally hazardous. Processing of soapstock into industrially valuable products, in particular, fatty acids, is promising. The method for producing fatty acids, which consists in sequential saponification of soapstock with sodium hydroxide solution, salting out with sodium chloride and decomposition with sulfuric acid solution has been investigated. The feature of this work is the study of the effect of salting out conditions of saponified soapstock on the yield and neutralization number of fatty ac

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8

Viktoriia, Kalyna, Koshulko Vitalii, Ilinska Olha, et al. "Development of soapstock processing technology to ensure waste-free and safe production." Eastern-European Journal of Enterprise Technologies 6, no. 10 (114) (2021): 23–29. https://doi.org/10.15587/1729-4061.2021.245094.

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Soapstock is a large-tonnage waste of the oil and fat industry, the disposal of which is environmentally hazardous. Processing of soapstock into industrially valuable products, in particular, fatty acids, is promising. The method for producing fatty acids, which consists in sequential saponification of soapstock with sodium hydroxide solution, salting out with sodium chloride and decomposition with sulfuric acid solution has been investigated. The feature of this work is the study of the effect of salting out conditions of saponified soapstock on the yield and neutralization number of fatty ac

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9

Sytnik, Natalia, Ekaterina Kunitsia, Viktoriia Kalyna, et al. "Technology development of fatty acids obtaining from soapstok using saponification." Eastern-European Journal of Enterprise Technologies 5, no. 6 (113) (2021): 16–23. http://dx.doi.org/10.15587/1729-4061.2021.241942.

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The processing of oil refining waste is essential from economic and environmental points of view. An important issue is the processing of soapstock to extract fatty acids, which are raw materials for various industries. The two-stage method of fatty acids obtaining from soapstock using saponification with sodium hydroxide solution and decomposition with sulfuric acid is investigated. The peculiarity of the work is the study of the influence of soapstock saponification conditions on the key efficiency indicators of fatty acid extraction: yield and neutralization number. A sample of soapstock wa

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10

Natalia, Sytnik, Kunitsia Ekaterina, Kalyna Viktoriia, et al. "Technology development of fatty acids obtaining from soapstok using saponification." Eastern-European Journal of Enterprise Technologies 5, no. 6 (113) (2021): 16–23. https://doi.org/10.15587/1729-4061.2021.241942.

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The processing of oil refining waste is essential from economic and environmental points of view. An important issue is the processing of soapstock to extract fatty acids, which are raw materials for various industries. The two-stage method of fatty acids obtaining from soapstock using saponification with sodium hydroxide solution and decomposition with sulfuric acid is investigated. The peculiarity of the work is the study of the influence of soapstock saponification conditions on the key efficiency indicators of fatty acid extraction: yield and neutralization number. A sample of soapsto

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11

T.A.Ismayilov, G.M.Guliyeva, R.A.Alizade, T. A. Ismayilov, G. M. Guliyeva, R. A. Alizade, and R. M. Farhadova, G. T. Valiyeva, T. S. Aliyev, S. G. Rzayeva R.M.Farhadova, G.T.Valiyeva, T.S.Aliyev, S.G.Rzayeva. "STUDY OF MIXTURES OF AMIDES OF SOAPSTOCK WITH POLYETH-YLENE POLYAMINE AND SUNFLOWER OIL ACIDS WITH HEXA-METHYLENEDIAMINE IN DIFFERENT PROPORTIONS AS ADDITIVES TO BITUMEN USING GRAVEL." PAHTEI-Procedings of Azerbaijan High Technical Educational Institutions 148, no. 02-02 (2024): 197–205. https://doi.org/10.36962/pahtei14802-022024-196.

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Amides were synthesized by mixing soapstock, which is a waste of cottonseed oil, and polyeth-ylene polyamine in different mass ratios. The reaction was carried out by stirring for 4 hours at a temperature of 140-145°C in a beaker equipped with a mixer, heater and thermometer. After obtaining the amide, the reaction product was cooled to 80°C, the necessary amount of heavy phlegm was added to it and mixed well, then it was collected in closed containers for use. At the same time, sunflower oil acid was obtained by hydrolysis, amide was synthesized with hexamethylenediamine in a mol ratio of 2:1

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12

Teyyub Ismayilov, Gultakin Guliyeva, Teyyub Ismayilov, Gultakin Guliyeva, Rufana Alizade, Rahima Farhadova Rufana Alizade, Rahima Farhadova, Gulnar Valiyeva, Tofiq Aliyev Gulnar Valiyeva, Tofiq Aliyev, and Sevda Rzayeva Sevda Rzayeva. "INVESTIGATION OF MIXTURES OF AMIDES BASED ON SOAPSTOCK AND SUNFLOWER FATTY ACIDS IN DIFFERENT PROPORTIONS AS ADDITIVES TO BITUME." PAHTEI-Procedings of Azerbaijan High Technical Educational Institutions 149, no. 3-4 (2024): 15–22. http://dx.doi.org/10.36962/pahtei149032024-15.

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Amides were synthesized by mixing soapstock, which is a waste of cottonseed oil, and polyethylene polyamine in different mass ratios. The reaction was carried out by stirring for 4 hours at a temperature of 140-145°C in a beaker equipped with a mixer, heater and thermometer. After obtaining the amide, the reaction product was cooled to 80°C, the necessary amount of heavy phlegm was added to it and mixed well, then it was collected in closed containers for use. At the same time, sunflower oil acid was obtained by hydrolysis, amide was synthesized with hexamethylene¬diamine in a mol ratio of 2:1

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13

Casali, Beatrice, Elisabetta Brenna, Fabio Parmeggiani, Francesca Tentori, and Davide Tessaro. "Multi-step chemo-enzymatic synthesis of azelaic and pelargonic acids from the soapstock of high-oleic sunflower oil refinement." Green Chemistry 24, no. 5 (2022): 2082–93. http://dx.doi.org/10.1039/d1gc03553c.

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14

Wang, Yunpu, Shumei Zhang, Qiuhao Wu, et al. "Microwave-assisted pyrolysis of vegetable oil soapstock: Comparative study of rapeseed, sunflower, corn, soybean, rice, and peanut oil soapstock." International Journal of Agricultural and Biological Engineering 12, no. 6 (2019): 202–8. http://dx.doi.org/10.25165/j.ijabe.20191205.4599.

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15

Wang, Yunpu, Shumei Zhang, Qiuhao Wu, et al. "Microwave-assisted pyrolysis of vegetable oil soapstock: Comparative study of rapeseed, sunflower, corn, soybean, rice, and peanut oil soapstock." International Journal of Agricultural and Biological Engineering 12, no. 6 (2019): 202–8. http://dx.doi.org/10.25165/j.ijabe.20191206.4599.

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16

Panda, A. K., K. Sridhar, B. Prakash, S. V. Rama Rao, and M. V. L. N. Raju. "Acidulated Sunflower Soapstock as an Energy Source in the Diet of Broiler Chickens." Animal Nutrition and Feed Technology 16, no. 2 (2016): 337. http://dx.doi.org/10.5958/0974-181x.2016.00029.9.

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17

Pekel, A. Y., G. Demirel, M. Midilli, H. Yalcintan, B. Ekiz, and M. Alp. "Comparison of broiler meat quality when fed diets supplemented with neutralized sunflower soapstock or soybean oil." Poultry Science 91, no. 9 (2012): 2361–69. http://dx.doi.org/10.3382/ps.2012-02272.

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18

Usta, N., E. Öztürk, Ö. Can, et al. "Combustion of biodiesel fuel produced from hazelnut soapstock/waste sunflower oil mixture in a Diesel engine." Energy Conversion and Management 46, no. 5 (2005): 741–55. http://dx.doi.org/10.1016/j.enconman.2004.05.001.

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19

Karunajeewa, H., S. H. Tham, A. Hofmann, and P. Harris. "The effects of rice by-products, acidulated soapstock and sunflower seeds on the laying performance of induced moulted hens." European Poultry Science 50, no. 5 (1986): 193–97. https://doi.org/10.1016/s0003-9098(25)00483-7.

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20

Sánchez Faba, Edgar M., Gabriel O. Ferrero, Joana M. Dias, and Griselda A. Eimer. "Alternative Raw Materials to Produce Biodiesel through Alkaline Heterogeneous Catalysis." Catalysts 9, no. 8 (2019): 690. http://dx.doi.org/10.3390/catal9080690.

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Recent research focuses on new biodiesel production and purification technologies that seek a carbon-neutral footprint, as well as cheap, renewable and abundant raw materials that do not compete with the demand for food. Then, many attractive alternatives arise due to their availability or low-cost, such as used cooking oil, Jatropha oil (non-edible) or byproducts of vegetable oil refineries. Due to their composition and the presence of moisture, these oils may need a pretreatment to reach the established conditions to be used in the biodiesel production process so that the final product compl

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21

Māliņš, Kristaps, Ilze Malina, and Mara Legzdina. "The Synthesis of Renewable Hydrocarbons from Different Vegetable Oils and Soapstock by Hydrotreatment over High Metal Loading Supported Ni Catalyst." Key Engineering Materials 903 (November 10, 2021): 81–86. http://dx.doi.org/10.4028/www.scientific.net/kem.903.81.

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The catalytic hydrotreatment of sunflower (SO), linseed (LO), coconut (CO), rapeseed (RO), and its soapstock derived acid oil (RS) over commercial Ni65%/SiO2-Al2O3 catalyst was investigated to evaluate utilization feasibility of various vegetable oil feedstocks with different fatty acid content, composition, and saturation for marketable hydrocarbon production. The active metal loading of catalyst was characterized by XRF and its textural properties by N2 sorption analysis. The hydrotreatment tests of different vegetable oils were carried out in solvent free medium, under initial H2 pressure 1

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22

Hazra, Chinmay, Debasree Kundu, and Ambalal Chaudhari. "Lipopeptide biosurfactant from Bacillus clausii BS02 using sunflower oil soapstock: evaluation of high throughput screening methods, production, purification, characterization and its insecticidal activity." RSC Advances 5, no. 4 (2015): 2974–82. http://dx.doi.org/10.1039/c4ra13261k.

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23

Pekel, A. Y., G. Demirel, M. Midilli, T. Öğretmen, N. Kocabağlı, and M. Alp. "Comparison of broiler live performance, carcass characteristics, and fatty acid composition of thigh meat when fed diets supplemented with neutralized sunflower soapstock or soybean oil." Journal of Applied Poultry Research 22, no. 1 (2013): 118–31. http://dx.doi.org/10.3382/japr.2012-00656.

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24

Javers, Jeremy, and Chinnadurai Karunanithy. "Polyhydroxyalkanoate Production by <i>Pseudomonas putida</i> KT217 on a Condensed Corn Solubles Based Medium Fed with Glycerol Water or Sunflower Soapstock." Advances in Microbiology 02, no. 03 (2012): 241–51. http://dx.doi.org/10.4236/aim.2012.23029.

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25

Irigaray, Bruno, Ivan Jachmanian, and Maria A. Grompone. "Antioxidant Activity of a Oryzanols Concentrate by Differential Scanning Calorimetry." Journal of Food Research 7, no. 1 (2017): 38. http://dx.doi.org/10.5539/jfr.v7n1p38.

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Oryzanols are natural antioxidants that are found in appreciable amounts in rice bran oil. However, by chemically refining the crude rice bran oil they are lost during the chemical neutralization step leaving the oil refined with very little oryzanols. The chemical neutralization leaves a residue called "soapstocks" where most of these antioxidants are found. From the soapstocks and by relatively simple procedures it is possible to obtain a oryzanols concentrate which may contain 33% of them. However, its antioxidant power has been little studied in oils compared to other natural antioxidants.

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26

Irigaray, Bruno, Iván Jachmanián, and María A. Grompone. "Influence of Oryzanols Concentrate on the Oxidation of Methyl Ester Linoleic Acid and Study of Their Oxidation Products." Journal of Food Research 8, no. 4 (2019): 37. http://dx.doi.org/10.5539/jfr.v8n4p37.

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Oryzanols are frequently found in rice bran oil but almost completely removed in the neutralization step when the oil is chemically refined. In this way, oryzanols can be recovered from the soapstocks to generate a concentrate. Thereby, they could be used as antioxidants in lipids for specific purposes. In the present work the antioxidant power of oryzanols concentrate (33% purity) was studied together with pure oryzanols and butylhydroxytoulene (BHT). Methyl esters were prepared from regular sunflower oil without antioxidants to which the antioxidants before mentioned were added in an effecti

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27

Paluzar, Hatice. "Production of high quality biodiesel from sunflower soapstock acid oil as novel feedstock: Catalyzed by immobilized pancreatic lipase." Journal of the American Oil Chemists' Society, December 21, 2023. http://dx.doi.org/10.1002/aocs.12804.

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AbstractEdible refined oils, which are utilized as raw materials in biodiesel production, have been replaced by by‐products (acid oil, fatty acid, deodorized distillate, and soapstock distillates) obtained from the vegetable oil refining industry, in recent years. This study aims to investigate the production of high quality biodiesel fuel in accordance with the standards (TS EN and ASTM) from sunflower soapstock acid oil. This feedstock was donated by an oil factory in the Thrace region, Turkey. Esterification reaction was performed by immobilized enzyme. For this, immobilization was carried

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28

Nourouzpour, Mohammad Mehdi, Alireza Habibi, and Fariba Amiri. "Kinetic studies and dynamic modeling of sophorolipids production by Candida catenulata using different carbon sources." Chemical Product and Process Modeling, February 20, 2024. http://dx.doi.org/10.1515/cppm-2023-0078.

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Abstract The kinetic study on sophorolipids (SLs) production by Candida catenulata from glucose, raw sunflower soapstock was investigated at different initial concentrations ranging from 0 to 100 g L−1. The Monod model with a maximum specific growth rate (μ max) of 0.0167 h−1 and half-saturation coefficient (K S ) of 6.91 g L−1 best described the cell growth kinetics of C. catenulata on glucose. The best-fitted constants of the Monod model for raw sunflower soapstock were μ max = 0.0157 h−1 and K S = 16.01 g L−1. Determination of Luedeking-Piret constants indicated SLs mainly produced as an as

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29

Brenna, Elisabetta, Valeria De Fabritiis, Fabio Parmeggiani, Francesca Tentori, and Davide Tessaro. "Lipase-Mediated Synthesis of Oleoyl Ethanolamide Starting from High-Oleic Sunflower Oil Soapstock." ACS Sustainable Chemistry & Engineering, February 7, 2023. http://dx.doi.org/10.1021/acssuschemeng.2c05598.

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30

Latebo, Samuel, Abreham Bekele, Temesgen Abeto, and Job Kasule. "Optimization of Trans-esterification Process and Characterization of Biodiesel from Soapstock Using Silica Sulfuric Acid as a Heterogeneous Solid Acid Catalyst." Journal of Engineering Research, November 3, 2021. http://dx.doi.org/10.36909/jer.12003.

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The main objective of this study was production, optimization, and fuel quality characterization of biodiesel from equal weight ratio blended acid oil of cottonseed and sunflower soapstock using silica sulfuric acid as a solid acid catalyst in laboratory scale. The physicochemical properties of soap stock samples and extracted acid oil from each soap stock were determined. The experiment was designed by design expert (version 11) software. The 5-level 4-factors (methanol to acid oil molar ratio, catalyst weight, stirring rate, and reaction time) were designed using the central composite design

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31

"05/02258 Combustion of biodiesel fuel produced from hazelnut soapstock/waste sunflower oil mixture in a Diesel engine." Fuel and Energy Abstracts 46, no. 5 (2005): 330. http://dx.doi.org/10.1016/s0140-6701(05)82267-2.

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32

Ferrero, Gabriel Orlando, Edgar Maximiliano Sánchez Faba, and Griselda Alejandra Eimer. "Biodiesel production from alternative raw materials using a heterogeneous low ordered biosilicified enzyme as biocatalyst." Biotechnology for Biofuels 14, no. 1 (2021). http://dx.doi.org/10.1186/s13068-021-01917-x.

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Abstract Background Cumulative reported evidence has indicated that renewable feedstocks are a promising alternative source to fossil platforms for the production of fuels and chemicals. In that regard, the development of new, highly active, selective, and easy to recover and reuse catalysts for biomass conversions is urgently needed. The combination of enzymatic and inorganic heterogeneous catalysis generates an unprecedented platform that combines the advantages of both, the catalytic efficiency and selectivity of enzymes with the ordered structure, high porosity, mechanical, thermal and che

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