scholarly journals Physicochemical characteristics and oxidative stability of Egyptian corn germ oil produced by aqueous enzymatic extraction

2018 ◽  
Vol 69 (4) ◽  
pp. 275 ◽  
Author(s):  
A. Y. Esmat ◽  
R. E. Hassan ◽  
G. A. Abo-ElWafa ◽  
M. M. Abou-ElSoud ◽  
M. G. Megahed
Keyword(s):  
Oxidative Stability ◽  
Corn Oil ◽  
Corn Germ ◽  
Oil Yield ◽  
Enzymatic Extraction ◽  
Hexane Extraction ◽  
Aqueous Enzymatic Extraction ◽  
Bacterial Protease ◽  
Corn Germ Oil ◽  
Fungal Cellulase

The physicochemical properties and the oxidative stability of Egyptian corn germ oil produced by aqueous enzymatic extraction using fungal cellulase, bacterial and bovine proteases, either individually or in combination were compared to that extracted by hexane. The optimized conditions of the new bovine protease for maximum oil yield were: 0.1% enzyme, pH 7.5 and 1h incubation time versus 0.6%, 0.63% enzyme, pH 4, 8.2 and 4, 2h incubation for fungal cellulase and bacterial protease, respectively. The higher oil yield was obtained by combining cellulase with bacterial protease (62.38%) or with bovine protease (51.94%) relative to hexane extraction (100%). The refractive index, iodine, saponification and peroxide values, DPPH scavenging activity, as well as fatty acids composition of enzymes and solvent-extracted oils were comparable. The acid value and color index of the enzyme-extracted oils were better than that produced by hexane, indicating that enzymes could be applied in the production of eco-friendly corn oil.

Quality of corn germ oil obtained by aqueous enzymatic extraction

1993 ◽  
Vol 70 (12) ◽  
pp. 1273-1277 ◽  
Author(s):  
Mirjana Bocevska ◽  
Djerdj Karlović ◽  
Jovan Turkulov ◽  
Draginja Pericin
Keyword(s):  
Corn Germ ◽  
Enzymatic Extraction ◽  
Aqueous Enzymatic Extraction ◽  
Corn Germ Oil

scholarly journals Ultrasound-assisted Aqueous Enzymatic Extraction of Corn Germ Oil: Analysis of Quality and Antioxidant Activity

2018 ◽  
Vol 67 (6) ◽  
pp. 745-754 ◽  
Author(s):  
Cuiping Han ◽  
Qingguan Liu ◽  
Yuequn Jing ◽  
Di Wang ◽  
Yue Zhao ◽  
...  
Keyword(s):  
Antioxidant Activity ◽  
Corn Germ ◽  
Oil Analysis ◽  
Enzymatic Extraction ◽  
Aqueous Enzymatic Extraction ◽  
Ultrasound Assisted ◽  
Corn Germ Oil

A comparison of commercial enzymes for the aqueous enzymatic extraction of corn oil from corn germ

2004 ◽  
Vol 81 (11) ◽  
pp. 1071-1075 ◽  
Author(s):  
Robert A. Moreau ◽  
David B. Johnston ◽  
Michael J. Powell ◽  
Kevin B. Hicks
Keyword(s):  
Corn Oil ◽  
Corn Germ ◽  
Enzymatic Extraction ◽  
Aqueous Enzymatic Extraction ◽  
Commercial Enzymes

Using Microwave Heating and Microscopy to Estimate Optimal Corn Germ Oil Yield with a Bench-Scale Press

2007 ◽  
Vol 84 (5) ◽  
pp. 489-495 ◽  
Author(s):  
L. C. Dickey ◽  
P. H. Cooke ◽  
M. J. Kurantz ◽  
A. McAloon ◽  
N. Parris ◽  
...  
Keyword(s):  
Microwave Heating ◽  
Corn Germ ◽  
Oil Yield ◽  
Bench Scale ◽  
Corn Germ Oil

Formation, characterization, and potential food application of rice bran wax oleogels: Expeller-pressed corn germ oil versus refined corn oil

2020 ◽  
Vol 309 ◽  
pp. 125704 ◽  
Author(s):  
Muxin Zhao ◽  
Yang Lan ◽  
Leqi Cui ◽  
Ewumbua Monono ◽  
Jiajia Rao ◽  
...  
Keyword(s):  
Rice Bran ◽  
Corn Oil ◽  
Corn Germ ◽  
Rice Bran Wax ◽  
Corn Germ Oil ◽  
Potential Food

Aqueous Enzymatic Extraction of Oil from Microwave-pretreated Jicaro Seeds

2019 ◽  
Vol 5 (1) ◽  
pp. 42-49
Author(s):  
Brenda Yesenia Nolasco Arroyo ◽  
Sandy Luz Ovando Chacón ◽  
Veymar Guadalupe Tacias-Pascacio ◽  
Guillermo Efrén Ovando Chacón ◽  
Cristina Ventura Canseco ◽  
...  
Keyword(s):  
Particle Size ◽  
Fatty Acid ◽  
Acid Content ◽  
Fatty Acid Content ◽  
Soxhlet Extraction ◽  
Oil Yield ◽  
Liquid Ratio ◽  
Enzymatic Extraction ◽  
Aqueous Enzymatic Extraction ◽  
Solid Liquid

Background: Jicaro seeds can be considered oilseeds due to their high content of lipids, which could be used. Aqueous Enzymatic Extraction (AEE) of oils is a safe, economical and ecological technique, with the disadvantage that oil yields are lower than conventional methods. The microwaves pre-treatment of the seeds has been applied to overcome this inconvenience. Therefore, the objective of this study was to investigate the aqueous enzymatic extraction of oil from Jicaro seed pretreated in a microwave (M-AEE) compared to Soxhlet extraction, in terms of oil yield and its quality. Methods: M-AEE was evaluated varying type of enzyme, extraction time, enzyme concentration, solid/liquid ratio and particle size, according to Fractional Factorial experimental design. The obtained oil was analyzed in terms of fatty acid content and antioxidant activities. The same analyses were performed in oil obtained by Soxhlet extraction for comparison. Results: All parameters investigated in this work had a positive effect on the extraction process. The highest oil yield of 69.71% was obtained with a particle size of 0.59 mm, 3% (w/w) of Viscozyme L, solid/ liquid ratio of 1:6, and 5 h. No differences were found in fatty acid content and antioxidant activity between the oil obtained by M-AEE and that obtained by SE. Conclusion: The properties of the oil were not different in the two extraction methods evaluated; however, M-AEE has the advantage of being environmentally friendly technique. Jicaro seed oil physicochemical properties were similar to edible oils, thus could be considered as a new option of edible vegetable oil.

scholarly journals Aqueous Extraction of Seed Oil from Mamey Sapote (Pouteria sapota) after Viscozyme L Treatment

Catalysts ◽  
2021 ◽  
Vol 11 (6) ◽  
pp. 748
Author(s):  
Veymar G. Tacias-Pascacio ◽  
Arnulfo Rosales-Quintero ◽  
Rafael C. Rodrigues ◽  
Daniel Castañeda-Valbuena ◽  
Pablo F. Díaz-Suarez ◽  
...  
Keyword(s):  
Fatty Acid ◽  
Oxidative Stability ◽  
Seed Oil ◽  
Extraction Process ◽  
Agitation Rate ◽  
Enzymatic Extraction ◽  
Aqueous Enzymatic Extraction ◽  
Conventional Solvent Extraction ◽  
Central Composite ◽  
Environmentally Friendly Method

In this study, aqueous enzymatic extraction (AEE) was evaluated during the process of obtaining oil from mamey sapote seed (OMSS). Viscozyme L enzyme complex was used at pH 4 and 50 °C during the optimization of the extraction process by central composite design and response surface methodology. Optimal conditions were: 3.5% (w/w) of enzyme (regarding the seed weight), 5.5 h of incubation time, 235 rpm of agitation rate, and 1:3.5 of solid-to-liquid ratio. These conditions enabled us to obtain an OMSS yield of 66%. No statistically significant differences were found in the fatty acid profile and physicochemical properties, such as the acid and iodine values and the percentage of free fatty acids, between the oil obtained by AEE or by the conventional solvent extraction (SE). However, the oxidative stability of the oil obtained by AEE (11 h) was higher than that obtained by SE (9.33 h), therefore, AEE, in addition to being an environmentally friendly method, produces a superior quality oil in terms of oxidative stability. Finally, the high oil content in mamey sapote seed, and the high percentage of oleic acid (around 50% of the total fatty acid) found in this oil, make it a useful edible vegetable oil.

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