Lebanon effect of corn germ pretreatment onoil extraction
PRODUCTION OF COOKING OIL FROM corn germ USING
supercritical fluid extraction methods were used to extract the oil and study the effect of pretreatment of the corn germ, pressure, temperature and flow rate on the process. Transmission Electron Microscope (TEM) was also used to monitor the corn germ sample surface morphology Figure 4.9: Effect of pressure on supercritical fluid extraction for
This work aimed the recovery of oil and protein fractions from corn germ (CG) generated as a by-product during flour processing. Several oil extraction techniques were investigated: hexane at room temperature, hexane at 45 °C, supercritical carbon dioxide (Sc-CO 2) and Soxhlet with hexane and ethanol.Their influence on oil yield and oil composition as well as on the further protein extraction
Effect of Moisture and Heat Treatment of corn germ on Oil
Increasing the moisture content of the corn germ from 8 to 25% before oil extraction increased the acid value (AV) (3.02–4.01 mg KOH g −1), peroxide value (PV) (0.52–1.05 meq kg −1), and the red value (7.3–8.7) and decreased the content of total
Mar 11, 2015· Efficiency of oil extraction from corn germ was improved by the extrusion pretreatment, and residual oil was taken as the index of this oil extraction process. An orthogonal rotation combination test design of five levels and four factors, consisting of the moisture of material, screw speed, barrel temperature, and die nozzle diameter, was
Effect of Heat Pretreatment on the Yield and Composition
Effects of heat pretreatment of wet-milled corn germ on the physicochemical properties of oil. Journal of Food Science and Technology 2024, 55 (8),3154-3162. DOI: 10.1007/s13197-018-3243-6. Rahma Belcadi-Haloui, Abderrahmane Zekhnini, Yassine El-Alem, Abdelhakim Hatimi.
An efficient process for recovering high quality corn germ oil from corn germ. The process involves pre-treating corn germ by Rehydration, conditioning and, optionally flaking. This is followed by extrusion, which is the core operation in the preparation of corn germ for corn germ oil recovery. Water is provided up front in the process, prior to extrusion.
Extraction of corn germ oil with supercritical CO2 and
Abstract. The aim of this work was to investigate corn germ oil extraction using supercritical CO 2 and cosolvents addition (hexane, acetone and ethanol). The effects of temperature (45–85 °C) and pressure (15–25 MPa) on the extract yield were evaluated for the tests conducted only with supercritical CO 2.The addition of cosolvents to supercritical CO 2 was also examined at 25 MPa
Emulsifying Properties of corn germ Proteins' J. F. ZAYAS2 and C. S. LIN2 ABSTRACT Cereal Chem. 66(4):263-267 Defatted corn germ protein obtained by the modified fat content in emulsions from 20 to 40% had a positive effect on emulsion extraction process had higher emulsifying capacity and emulsion stability stability. Because of its better
1600 Tons/Day new technology corn germ extracting
The 1600 tons/day corn germ extraction equipments are used in a group of 14, requires power of 660kw in total. According to a test, 15% of the corn germ is grinded to powder, thus affect the germ extraction yield. The grinded mixture is sent into a sole 8-hole
The physicochemical properties of oil from Rosa affinis rubiginosa seeds were analyzed after extraction by (i) organic solvent, (ii) cold pressing, and (iii) cold pressing assisted by enzymatic pretreatment using a mixture of the Novo-Nordisk A/S products Cellubrix (cellulase and hemicellulase activities) and Olivex (pectinase, cellulase, and hemicellulase activities).
Oil and protein recovery from corn germ: Extraction yield
Mar 01, 2024· This work aimed the recovery of oil and protein fractions from corn germ (CG) generated as a by-product during flour processing. Several oil extraction techniques were investigated: hexane at room temperature, hexane at 45 °C, supercritical carbon dioxide (Sc-CO 2) and Soxhlet with hexane and ethanol.Their influence on oil yield and oil composition as well as on the further protein extraction
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Effects of heat pretreatment of wet-milled corn germ on
corn germ oil is removed from the milled germ using a conditioning (heating) process, followed by mechanical expelling and/or hexane extraction. In this study, the effect of pretreatment by oven roasting (OR) and microwave (MW) radiation on wet-milled corn germ was investigated. Three OR temperatures (125, 150, and 175 °C) were used with 60 min exposure, and MW pretreatments were
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corn germ Protein & Oil Recovery after Germ Wet Milling
Pre-treating dry milled corn germ by heating it in boiling water or microwave pretreatment, followed by enzymatic extraction with the acidic cellulase resulted in oil yields of about 43% and 57%
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Recoveries of Oil and Hydrolyzed Sugars from corn germ
Theoretically, the major effect of LHW pretreatment on oil in germ meal is to break the oil bodies and release more lipids, which partially explains the enhanced lipid recovery after LHW. Lipids accumulated in various vegetative tissues also exist as LDs that have a similar basic structure as LDs from corn germ
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Modification of aqueous enzymatic oil extraction to
Samples of dry fractionated corn germ (dried at the mill, on September, 2009, to about 3% moisture), hereinafter called germ A, were obtained from Cereal Process Technologies, LLC (Overland Park, KS) [2.7 ± 1.2% moisture, 17.2 ± 1.7% lipid] and stored in polyethylene bags, inside sealed drums, at 4 °C until needed.Samples of germ used for each run were analyzed and used to calculate the
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Supercritical fluid extraction of corn germ oil: Study of
Highlights Supercritical fluid extraction of corn germ oil at different pressures, temperatures and flow rates has been carried out. Extraction process may be controlled by the solubility of the oil in SC-CO 2 in the first stages of the extraction. When increasing extraction temperature in the range 40–85 °C, oils with higher tocopherol content and higher antioxidant activity are obtained
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SUMMARY
The moisture and ash contents of corn germ were determined as described by Pearson (1976).The percentage of total protein was determined by the micro-kjeldahl method, and the percentage of total oil content was determined by extraction in n-hexane using the Soxhlet extraction system (AOAC, 2005).The percentage of total carbohydrate content was calculated by adding the mean values of the
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Aqueous Extraction of corn germ Oil After Fermentation in the
Jan 01, 2014· corn germ Oil from Pressing and/or Solvent Extraction of Wet Milled corn germ. Most commercial corn germ oil is obtained from corn germ that is a by-product of the wet milling industry (Moreau, 2002; 2005).The wet milling process was developed in the late 1800s to optimize the production of corn germ starch from corn germ kernels.
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Production and evaluation of biodiesel and bioethanol
Jan 01, 2013· The germ and endosperm proportion was expressed as the percentage of germ or endosperm on corn germ basis. The oil content of KHO was carried out using the one-step extraction method (Folch et al., 1957). corn germ seeds (100 g) were coarsely ground and
Get PriceEffect of rosehip extraction process on oil and defatted
The physicochemical properties of oil from Rosa affinis rubiginosa seeds were analyzed after extraction by (i) organic solvent, (ii) cold pressing, and (iii) cold pressing assisted by enzymatic pretreatment using a mixture of the Novo-Nordisk A/S products Cellubrix (cellulase and hemicellulase activities) and Olivex (pectinase, cellulase, and hemicellulase activities).
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Impact of Dry-milled Germ Processing on Aqueous Protein
Aqueous enzymatic oil extraction (AEOE) was used to evaluate the oil recovery potential after Germ Wet Milling. The effect of enzyme dosages and/or elimination of the acidic protease on oil extraction from high protein, high protein dispersibility index (PDI) corn germ and high protein, low PDI corn germ were evaluated.
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Effect of water bath‐assisted water extraction on physical
Chen et al. used a two‐step water extraction method to extract more oil bodies. Kapchie et al. used enzyme‐assisted extraction of SOB and studied the effects of ultrasonic and high static pressure pretreatment methods on oil bodies. The recovery rate of oil bodies extracted by this method is high, up to 84.65%.
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US9777243B2 Methods for obtaining corn germ oil from milled
Methods for obtaining corn germ oil from milled corn germ (e.g., dry milled corn germ), involving adding water, at least one acidic cellulase, at least one acidic protease, and at least one phytase to milled corn germ to obtain corn germ oil.
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The influence of moisture content and cooking on the screw
With the dry milled corn germ, no oil was obtained from the uncooked germ. A maximal yield of about 5% oil [26% of total oil recovery (TOR), relative to hexane extraction] was obtained by cooking the dry‐milled germ for 6.5 min in a conventional oven at 180°C before pressing.
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Aqueous Extraction of corn germ Oil After Fermentation in the
Jan 01, 2014· corn germ Oil from Pressing and/or Solvent Extraction of Wet Milled corn germ. Most commercial corn germ oil is obtained from corn germ that is a by-product of the wet milling industry (Moreau, 2002; 2005).The wet milling process was developed in the late 1800s to optimize the production of corn germ starch from corn germ kernels.
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Supercritical fluid extraction of corn germ oil: Study of
Highlights Supercritical fluid extraction of corn germ oil at different pressures, temperatures and flow rates has been carried out. Extraction process may be controlled by the solubility of the oil in SC-CO 2 in the first stages of the extraction. When increasing extraction temperature in the range 40–85 °C, oils with higher tocopherol content and higher antioxidant activity are obtained
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SUMMARY
The moisture and ash contents of corn germ were determined as described by Pearson (1976).The percentage of total protein was determined by the micro-kjeldahl method, and the percentage of total oil content was determined by extraction in n-hexane using the Soxhlet extraction system (AOAC, 2005).The percentage of total carbohydrate content was calculated by adding the mean values of the
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Optimization of the Aqueous Enzymatic Extraction of
Robert A. Moreau, Leland C. Dickey, David B. Johnston, Kevin B. Hicks, A Process for the Aqueous Enzymatic Extraction of corn germ Oil from Dry Milled corn germ and Enzymatic Wet Milled corn germ (E‐Germ), Journal of the American Oil Chemists' Society, 10.1007/s11746-009-1363-x, 86, 5, (469-474), (2009).
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US9777243B2 Methods for obtaining corn germ oil from milled
US9777243B2 US14/595,526 US201514595526A US9777243B2 US 9777243 B2 US9777243 B2 US 9777243B2 US 201514595526 A US201514595526 A US 201514595526A US 9777243 B2 US9777243 B2 US 9777243B2 Authority US United States Prior art keywords oil germ corn germ acidic phytase Prior art date 2015-01-13 Legal status (The legal status is an assumption and is not a legal conclusion.
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Production and evaluation of biodiesel and bioethanol
Jan 01, 2013· The water and oil contents of the KHO corn germs are shown in Table 1.The oil contents (wet base) of all the KHO corn germ varieties range from 4.23 ± 0.21% to 21.12 ± 0.17%, compared with only 2–4% for regular corn germ (Rooney and Suhendro, 2001).The water contents of these KHO corn germ varieties were below 7% (wet base), indicating that these KHO corn germs would be quite stable during storage.
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US4246184A Extraction of oil from vegetable materials
An improved method for removing oil from oil-bearing vegetable material is disclosed. The method comprises comminuting the vegetable material, forming agglomerates of the finely divided material containing between about 20% and about 55% water by weight, drying the agglomerates to a moisture content of less than about 15% by weight and then extracting the dried agglomerates with an oil solvent.
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The Comparison of Oil Quality from Different Processes
In this study, different oil extraction processes, such as extrusion pretreatment, ultrasound-ethanol assisted demulsification and traditional hexane extraction of oil, were employed to extract oil from soybean in order to compare their different effects on oil quality, fatty acid distribution and VE content of oil. The result shows that the quality of oil from extrusion pretreatment aqueous
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Application of Osmotic Dehydration and Ultrasound to
Oct 20, 2024· In this study, osmotic dehydration which is normally used as a pretreatment in fruit dehydration process was applied as a low-energy moisture removal method during the ultrasound-assisted extraction of oil from hazelnut. The effects of ultrasound amplitude, concentration of osmotic solution, and dehydration time on the yield and characteristics
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Effect of water bath‐assisted water extraction on physical
Chen et al. used a two‐step water extraction method to extract more oil bodies. Kapchie et al. used enzyme‐assisted extraction of SOB and studied the effects of ultrasonic and high static pressure pretreatment methods on oil bodies. The recovery rate of oil bodies extracted by this method is high, up to 84.65%.
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Flaking as a Pretreatment for Enzyme-Assisted Aqueous
Soybean moisture content (7.2–12.8%) and conditioning temperature (51–79 °C) during flaking were evaluated to determine their effects on oil and protein extraction and oil distribution among fractions produced in enzyme-assisted aqueous extraction processing (EAEP). Extractions were performed by using two-stage countercurrent EAEP at a 1:6 solids-to-liquid ratio with 0.5% protease
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Review of Separation and Purification Technologies
The additional fermentation of the fiber fraction of corn germ kernel could increase the ethanol yield more than 10% through appropriate pretreatment of the corn germ fiber [17]. In addition, corn germ fiber can also be utilized to manufacture corn germ fiber oil by extraction, which has low cholesterol due to its ferulate esters content, particularly sitostanyl
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Effect of the corn germ breaking method on oil distribution
Flaking slightly reduced bound fat. The flaked and then extruded corn germ meal released the highest amount of free oil, about 25% compared to 7% for the average of the other treatments. The freed oil from flaking, however, became nonextractable after the flaked corn germ was ground. Fine grinding alone had little effect on oil partitioning.
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Optimization of the Aqueous Enzymatic Extraction of
Robert A. Moreau, Leland C. Dickey, David B. Johnston, Kevin B. Hicks, A Process for the Aqueous Enzymatic Extraction of corn germ Oil from Dry Milled corn germ and Enzymatic Wet Milled corn germ (E‐Germ), Journal of the American Oil Chemists' Society, 10.1007/s11746-009-1363-x, 86, 5, (469-474), (2009).
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SUMMARY
The moisture and ash contents of corn germ were determined as described by Pearson (1976).The percentage of total protein was determined by the micro-kjeldahl method, and the percentage of total oil content was determined by extraction in n-hexane using the Soxhlet extraction system (AOAC, 2005).The percentage of total carbohydrate content was calculated by adding the mean values of the
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