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- Author:
- Steven C. Cermak, et al. ; Roque L. Evangelista; Terry A. Isbell; Jim Todd; Show all 4 Authors
- Source:
- Industrial crops and products 2022 v.180 pp. 114799
- ISSN:
- 0926-6690
- Subject:
- Euphorbia; color; fatty acid composition; free fatty acids; heat treatment; hexane; lipid content; oilseed cakes; phospholipids; seed moisture; seed oils; solvents; temperature; vernolate; water content
- Abstract:
- ... This study evaluated the oil extraction from the Euphorbia lagascae seeds by pre-pressing followed by solvent extraction. The objective was to assess the effect of starting seed moisture content (MC) and heating temperature on oil extractability and quality of pressed and solvent-extracted oils. The expelling conditions evaluated seed moisture (5% and 10% MC) that were subjected to three temperatu ...
- DOI:
- 10.1016/j.indcrop.2022.114799
- https://doi.org/10.1016/j.indcrop.2022.114799
- Author:
- Steven C. Cermak, et al. ; Hailemichael O. Yosief; Majher I. Sarker; Grigor B. Bantchev; Robert O. Dunn; Show all 5 Authors
- Source:
- Industrial & engineering chemistry process design and development 2022 v.61 no.27 pp. 9889-9900
- ISSN:
- 1520-5045
- Subject:
- Fourier transform infrared spectroscopy; biolubricants; gel chromatography; nuclear magnetic resonance spectroscopy; oxidative stability; process design; solubility; sunflower oil; tallow; unsaturated fatty acids; viscosity
- Abstract:
- ... The possible application of beef tallow as a biolubricant by improving its physicochemical properties through chemical modification has been explored. The unsaturated fatty acid chain of the regular beef tallow (RBT) was alkylated with isopropyl groups in the presence of ethylaluminum sesquichloride. The alkyl-branched beef tallow (BBT) was characterized using a combination of various analytical t ...
- DOI:
- 10.1021/acs.iecr.2c01207
- CHORUS:
- 10.1021/acs.iecr.2c01207
- https://doi.org/10.1021/acs.iecr.2c01207
- Author:
- Steven C. Cermak, et al. ; Girma Biresaw; Yunzhi Chen; Li Chen; Helen Ngo; Karen Wagner; Karl E. Vermillion; Show all 7 Authors
- Source:
- Industrial crops and products 2022 v.182 pp. 114857
- ISSN:
- 0926-6690
- Subject:
- biolubricants; carbon; cold; estolides; oxidative stability; pour point; temperature; vegetables; viscosity
- Abstract:
- ... One of the drawbacks of using vegetable oils directly as a lubricant is poor low temperature performance, mainly pour and cloud points. Oleic estolides were developed to improve these properties as well as increase the oxidative stability of the oil. However, additional low temperature properties are desirable to increase the field of use of these materials. A new series of iso-oleic estolide free ...
- DOI:
- 10.1016/j.indcrop.2022.114857
- https://doi.org/10.1016/j.indcrop.2022.114857
- Author:
- Steven C. Cermak, et al. ; Terry A. Isbell; Benjamin A. Lowery; Show all 3 Authors
- Source:
- The journal of the American Oil Chemists' Society 2020 v.97 no.4 pp. 425-435
- ISSN:
- 0003-021X
- Subject:
- epoxides; estolides; hydrogen bonding; moieties; molecular weight; oils; oleic acid; petroleum; polyethylene glycol; ricinoleic acid; solubility; stearic acid; vegetables; viscometry; viscosity
- Abstract:
- ... Polyethylene glycol (PEG) diesters from estolides of oleic acid, ricinoleic acid, and 12‐hydroxy stearic acid were used up to 5 wt% additive in petroleum‐derived base oils: 100 N, 220 N, 600 N, PAO 2cSt, PAO 4cst, and PAO 8cSt. The viscosity indices of the petroleum base oils were the lowest (VI = 104–108); the polyalpholefin (PAO) synthetic petroleum‐derived base oils were better (VI = 124–136) a ...
- Handle:
- 10113/7019768
- DOI:
- 10.1002/aocs.12334
- https://doi.org/10.1002/aocs.12334
- Author:
- Steven C. Cermak, et al. ; Yunzhi Chen; Girma Biresaw; Terry A. Isbell; Helen L. Ngo; Li Chen; Amber L. Durham; Show all 7 Authors
- Source:
- The journal of the American Oil Chemists' Society 2020 v.97 no.3 pp. 231-241
- ISSN:
- 0003-021X
- Subject:
- Physaria; biodegradability; biolubricants; carboxylic ester hydrolases; catalysts; coconuts; cold; cosmetics; estolides; fatty acids; petroleum; pour point; temperature; vegetables; viscosity
- Abstract:
- ... Estolides are bio‐based oils synthesized from fatty acids or from the reaction of fatty acids with vegetable oils. Estolides have many advantages as lubricant base oils, including excellent biodegradability and cold flow properties. Promising applications for estolides include bio‐lubricant base oils and in cosmetics. In this review, the synthesis of estolides from fatty acids using four different ...
- DOI:
- 10.1002/aocs.12323
- https://doi.org/10.1002/aocs.12323
- Author:
- Steven C. Cermak, et al. ; Isbell Terry A.; Benjamin A. Lowery; Karl Vermillion; Show all 4 Authors
- Source:
- journal of the American Oil Chemists' Society 2020 v.97 no.4 pp. 409-423
- ISSN:
- 0003-021X
- Subject:
- catalysts; dodecanoic acid; epoxides; estolides; hydrolysis; nuclear magnetic resonance spectroscopy; oils; olefin; oleic acid; perchloric acid; polyethylene glycol; tin
- Abstract:
- ... Estolides from oleic acid, 12‐hydroxystearic acid, and methyl ricinoleate were synthesized and converted to polyethylene glycol (PEG) diesters. Oleic estolide was synthesized from oleic acid as a homo‐oligomeric material using perchloric acid in 68.8% yield and an estolide number (EN) value of 1.29. Estolides from 12‐hydroxystearic acid were homo‐oligomers made by heating under vacuum at 150 °C fo ...
- Handle:
- 10113/6937368
- DOI:
- 10.1002/aocs.12336
- https://doi.org/10.1002/aocs.12336
- Author:
- Steven C. Cermak, et al. ; Grigor B. Bantchev; Amber L. Durham; Neil P. J. Price; Show all 4 Authors
- Source:
- The journal of the American Oil Chemists' Society 2019 v.96 no.4 pp. 365-380
- ISSN:
- 0003-021X
- Subject:
- equations; estolides; gel chromatography; molecular weight; oleic acid; tetrahydrofuran
- Abstract:
- ... Using the universal calibration and the Mark‐Houwink equation (MHE) (ηj=KMjα), three batches of oleic estolide acids and their corresponding 2‐ethylhexyl esters were characterized using gel permeation chromatography (GPC). The MHE parameters in tetrahydrofuran (THF) at 40 °C were determined (for acids: α = 0.442 ± 0.003 and log₁₀K=2.505 ± 0.007, for esters: α =0.531 ± 0.006 and log₁₀K =2.794 ± 0.0 ...
- Handle:
- 10113/6896870
- DOI:
- 10.1002/aocs.12165
- https://doi.org/10.1002/aocs.12165
- Author:
- Steven C Cermak, et al. ; Gwang H Roh; Xiaaojie Zhou; Yansu Wang; James A Kenar; Alexander Lehmann; Baoyu Han; David B Taylor; Xiaopeng Zeng; Chung Gyoo Park; Gary J Brewer; Junwei J Zhu; Show all 12 Authors
- Source:
- Pest management science 2020 v.76 no.1 pp. 405-414
- ISSN:
- 1526-498X
- Subject:
- Stomoxys calcitrans; antifeedants; antifeeding activity; arthropod pests; bioassays; biobased products; cages; climate change; coconuts; disease vectors; dose response; fatty acid methyl esters; free fatty acids; hematophagy; imagos; insect control; medium chain fatty acids; olfactometers; plant cultural practices; toxicity
- Abstract:
- ... BACKGROUND: Stable flies are one of the most detrimental arthropod pests to livestock. With changing climates and agronomic practices, they expand their roles as pests and disease vectors as well. Their painful bites reduce livestock productivity, annoy companion animals, and interfere with human recreational activities. Current management technologies are unable to effectively control stable flie ...
- DOI:
- 10.1002/ps.5574
- https://doi.org/10.1002/ps.5574
- Author:
- Steven C. Cermak, et al. ; Terry A. Isbell; Laura F. Marek; Show all 3 Authors
- Source:
- Journal of plant registrations 2017 v.11 no.3 pp. 311-314
- ISSN:
- 1936-5209
- Subject:
- Agricultural Research Service; Thlaspi arvense; germination; germplasm
- Abstract:
- ... Elizabeth pennycress (Thlaspi arvense L.) germplasm (Reg. No. GP‐36, PI 677360) was publicly released by the USDA‐ARS in 2016 for the improvement of Thlaspi germplasm. Elizabeth was developed by four generations of mass selection based on the germination response of freshly harvested pennycress seeds. The original seed source was the wild population Beecher (PI 672505) collected from a winter fall ...
- DOI:
- 10.3198/jpr2016.12.0073crg
- https://doi.org/10.3198/jpr2016.12.0073crg
10. Derivatization of castor oil based estolide esters: Preparation of epoxides and cyclic carbonates
- Author:
- Steven C. Cermak, et al. ; Kenneth M. Doll; James A. Kenar; Erin L. Walter; Terry A. Isbell; Show all 5 Authors
- Source:
- Industrial crops and products 2017 v.104 pp. 269-277
- ISSN:
- 0926-6690
- Subject:
- carbon dioxide; carbonates; castor oil; derivatization; epoxides; estolides; hydrogen peroxide; industrial applications; oleic acid; oxidation; temperature; tetrabutylammonium compounds; viscosity
- Abstract:
- ... Estolides that are based on castor oil and oleic acid are versatile starting points for the production of industrial fluids with new properties. A variety of unsaturated estolides were derivatized by epoxidation with hydrogen peroxide. The epoxidized estolides were further modified using supercritical carbon dioxide and tetrabutylammonium bromide to chemically incorporate carbon dioxide into the m ...
- Handle:
- 10113/5684918
- DOI:
- 10.1016/j.indcrop.2017.04.061
- https://doi.org/10.1016/j.indcrop.2017.04.061
- Author:
- Steven C. Cermak, et al. ; Whitney A. Qualls; Rui-De Xue; Muhammad Farooq; Steven T. Peper; Vindhya Aryaprema; Kai Blore; Richard Weaver; Dena Autry; Asghar Talbalaghi; James Kenar; Junwei J. Zhu; Show all 12 Authors
- Source:
- Journal of medical entomology 2020 v.58 no.2 pp. 979-982
- ISSN:
- 0022-2585
- Subject:
- Aedes aegypti; Nepeta cataria; USDA; active ingredients; coconuts; decanoic acid; deet; dodecanoic acid; laboratory rearing; medical entomology; odors; oils
- Abstract:
- ... Thirteen botanical product repellent compounds such as 2-undecanone, capric, lauric, coconut fatty acids (and their methyl ester derivatives), and catnip oil were formulated in either Coppertone or Aroma Land lotions and evaluated against laboratory-reared Aedes aegypti L. (Diptera: Culicidae) mosquitoes. These formulations contained 7–15 wt/wt of the botanical repellent as the major active ingred ...
- DOI:
- 10.1093/jme/tjaa244
- https://doi.org/10.1093/jme/tjaa244
- Author:
- Steven C Cermak, et al. ; Kenneth M. Doll; James A Kenar; Terry A Isbell; Show all 4 Authors
- Source:
- J Am Oil Chem Soc 2016 v.93 no. pp. 1149-1155
- ISSN:
- 0003-021x
- Subject:
- Fourier transform infrared spectroscopy; alkenes; bromides; carbon dioxide; carbonates; catalysts; chemical derivatives; chemical reactions; chemical structure; epoxides; esters; ethylene oxide; fatty acids; formic acid; hydrogen peroxide; nuclear magnetic resonance spectroscopy; oils; synthesis; tetrabutylammonium compounds; viscosity
- Abstract:
- ... The unsaturated sites in oleic 2-ethylhexyl estolide esters (containing 35 % monoenic fatty acids) were converted into epoxide and five-membered cyclic carbonate groups and the products characterized by Fourier transform infrared spectra (FTIR), 1H, and 13C nuclear magnetic resonance (NMR) spectroscopies. Epoxidation of the alkene bonds was accomplished using performic acid generated in situ from ...
- Handle:
- 10113/5642480
- DOI:
- 10.1007/s11746-116-2857-y
- https://doi.org/10.1007/s11746-116-2857-y
- Author:
- Steven C. Cermak, et al. ; David L. Compton; John R. Goodell; Mark A. Berhow; James A. Kenar; Kervin O. Evans; Show all 6 Authors
- Source:
- The journal of the American Oil Chemists' Society 2017 v.94 no.3 pp. 397-411
- ISSN:
- 0003-021X
- Subject:
- Candida; Food and Drug Administration; absorption; antioxidant activity; bioreactors; carboxylic ester hydrolases; coconut oil; fungibility; liquid chromatography; mass spectrometry; medium chain triacylglycerols; monoacylglycerols; shea butter; soybean oil; transesterification; vegetable oil; United States
- Abstract:
- ... The synthesis of feruloylated coconut oil and feruloylated shea butter were demonstrated in 0.5‐L scale, shaken, batch reactions. Ethyl ferulate and the vegetable oil/fat were combined in a 1.0:1.3 mol ratio in the presence of Candida antartica lipase B immobilized on an acrylic resin (Novozym 435) at 60 °C. The transesterification of ethyl ferulate with coconut oil and shea butter reached equilib ...
- Handle:
- 10113/5758247
- DOI:
- 10.1007/s11746-017-2953-7
- https://doi.org/10.1007/s11746-017-2953-7
- Author:
- Steven C. Cermak, et al. ; Kenneth M. Doll; James A. Kenar; Terry A. Isbell; Show all 4 Authors
- Source:
- The journal of the American Oil Chemists' Society 2016 v.93 no.8 pp. 1149-1155
- ISSN:
- 0003-021X
- Subject:
- Fourier transform infrared spectroscopy; alkenes; carbon dioxide; catalysts; epoxides; esters; ethylene oxide; fatty acids; formic acid; hydrogen peroxide; nuclear magnetic resonance spectroscopy; stable isotopes; tetrabutylammonium compounds; viscosity
- Abstract:
- ... The unsaturated sites in oleic 2-ethylhexyl estolide esters (containing 35 % monoenic fatty acids) were converted into epoxide and five-membered cyclic carbonate groups and the products characterized by Fourier transform infrared spectra (FTIR), ¹H, and ¹³C nuclear magnetic resonance (NMR) spectroscopies. Epoxidation of the alkene bonds was accomplished using performic acid generated in situ from ...
- DOI:
- 10.1007/s11746-016-2857-y
- CHORUS:
- 10.1007/s11746-016-2857-y
- https://doi.org/10.1007/s11746-016-2857-y
- Author:
- Steven C. Cermak, et al. ; Roque L. Evangelista; Milagros P. Hojilla-Evangelista; Terry A. Isbell; Show all 4 Authors
- Source:
- Industrial crops and products 2015 v.69 pp. 378-384
- ISSN:
- 0926-6690
- Subject:
- Coriandrum sativum; carbohydrates; crude fiber; crude protein; distillation; essential oils; free fatty acids; fruits; gravity; hulling; hulls; industrial crops; lipid content; oils; oilseeds; pressing; screening; seeds; solvents; spices; steam; triacylglycerols
- Abstract:
- ... Coriander (Coriandrum sativum L.) is a summer annual traditionally grown for use as fresh green herb, spice or for its essential oil. The essential oil is obtained by steam distillation of crushed fruit and the residue is utilized as feed or processed further to recover the triglyceride. The triglyceride is obtained from the whole fruit by mechanical pressing or by solvent extraction. The coriande ...
- Handle:
- 10113/60546
- DOI:
- 10.1016/j.indcrop.2015.02.057
- https://doi.org/10.1016/j.indcrop.2015.02.057
- Author:
- Steven C. Cermak, et al. ; Michael A. Jackson; Show all 2 Author
- Source:
- Applied Catalysis A: General 2012 v.431-432 pp. 157-163
- ISSN:
- 0926-860X
- Subject:
- Cuphea; acetic acid; adsorption; aluminum oxide; catalysts; cesium; chemical reactions; cuphea seed oil; decanoic acid; desorption; insect repellents; iron oxides; ketones; odors; triacylglycerols
- Abstract:
- ... The objective of this work was to demonstrate the viability of the cross ketonization reaction with the triacylglycerol from Cuphea sp. and acetic acid in a fixed-bed plug-flow reactor. The seed oil from Cuphea sp. contains up to 71% decanoic acid and the reaction of this fatty acid residue with acetic acid yields the fragrance compound and insect repellent 2-undecanone. To this end, we screened s ...
- Handle:
- 10113/57567
- DOI:
- 10.1016/j.apcata.2012.04.034
- https://doi.org/10.1016/j.apcata.2012.04.034
- Author:
- Steven C. Cermak, et al. ; Grigor B. Bantchev; Girma Biresaw; Show all 3 Authors
- Source:
- Journal of the American Oil Chemists' Society 2012 v.89 no.6 pp. 1091-1099
- ISSN:
- 0003-021X
- Subject:
- blended foods; equations; esters; fractionation; hydrodynamics; mixing; polyolefin; soybean oil; viscosity
- Abstract:
- ... The film thickness in elastohydrodynamic (EHD) conditions for soybean oil (SBO), oleic estolide ester (EST) and their binary blends with polyalphaolefins (PAO2 or PAO40) were studied at 30 and 100 °C. Changes with time, for up to 200 min, were monitored. SBO and its blends with the lower viscosity PAO2 showed initially good agreement with the Hamrock–Dowson (H–D) equation down to 1–3 nm film thick ...
- Handle:
- 10113/54495
- DOI:
- 10.1007/s11746-011-1988-4
- https://doi.org/10.1007/s11746-011-1988-4
- Author:
- Steven C. Cermak, et al. ; Gerhard Knothe; Roque L. Evangelista; Show all 3 Authors
- Source:
- Fuel 2012 v.96 no. pp. 535-540
- ISSN:
- 0016-2361
- Subject:
- Lesquerella; Ricinus communis; biodiesel; castor oil; esters; glycerol; nuclear magnetic resonance spectroscopy; oxidative stability; ricinoleic acid; sulfur; vegetable oil; viscosity
- Abstract:
- ... The search for alternative feedstocks for biodiesel as a partial replacement for petrodiesel has recently extended to castor oil. In this work, the castor oil methyl esters were prepared and their properties determined in comparison to the methyl esters of lesquerella oil, which, in turn, is seen as an alternative to castor oil. Both oils contain high amounts of hydroxy fatty acids, castor oil con ...
- Handle:
- 10113/55190
- DOI:
- 10.1016/j.fuel.2012.01.012
- https://doi.org/10.1016/j.fuel.2012.01.012
19. Continuous, packed-bed, enzymatic bioreactor production and stability of feruloyl soy glycerides
- Author:
- Steven C. Cermak, et al. ; David L. Compton; John R. Goodell; Steven Grall; Kervin O. Evans; Show all 5 Authors
- Source:
- Industrial crops and products 2015 v.77 pp. 787-794
- ISSN:
- 0926-6690
- Subject:
- Pseudozyma antarctica; absorbance; acid value; acylglycerols; antioxidant activity; bioreactors; carboxylic ester hydrolases; color; free radical scavengers; hydrolysis; industry; ingredients; soybean oil; storage time
- Abstract:
- ... The synthesis of feruloyl soy glycerides was demonstrated on a pilot-scale (1metric ton/year) in a continuous, four-column series, packed-bed, enzymatic bioreactor (herein referred to as the bioreactor). Ethyl ferulate and soybean oil were combined and converted at 3.5kg/d over Candida antarctica lipase B immobilized on an acrylic resin (Novozym 435) at 60°C. The ethyl ferulate/soybean oil substra ...
- Handle:
- 10113/5429545
- DOI:
- 10.1016/j.indcrop.2015.09.059
- https://doi.org/10.1016/j.indcrop.2015.09.059
- Author:
- Steven C. Cermak, et al. ; Terry A. Isbell; David A. Dierig; Fred J. Eller; Laura F. Marek; Show all 5 Authors
- Source:
- Journal of plant registrations 2015 v.9 no.2 pp. 212-215
- ISSN:
- 1936-5209
- Subject:
- Agricultural Research Service; Thlaspi arvense; artificial selection; germplasm evaluation; germplasm releases; plant breeding; seed germination; seeds; Illinois
- Abstract:
- ... Katelyn (Reg. No. GP-35, PI 673443) pennycress (Thlaspi arvense L.) germplasm was publicly released by the USDA–ARS in 2014 as part of a new crop improvement program. Katelyn was developed by two generations of mass selection based on the germination response of freshly harvested pennycress seeds. The original seed source was the wild population Beecher (PI 672505) collected from a winter fallow c ...
- Handle:
- 10113/62120
- DOI:
- 10.3198/jpr2014.08.0053crg
- https://doi.org/10.3198/jpr2014.08.0053crg