Influence of deodorization temperature on formation of tocopherol esters and fatty acids polymers in vegetable oil

2016 ◽  
Vol 119 (3) ◽  
pp. 1600027 ◽  
Author(s):  
František Kreps ◽  
Jan Kyselka ◽  
Zuzana Burčová ◽  
Štefan Schmidt ◽  
Aleš Rajchl ◽  
...  
Keyword(s):  
Fatty Acids ◽  
Vegetable Oil ◽  
Deodorization Temperature

scholarly journals Enzymatic Methods for the Manipulation and Valorization of Soapstock from Vegetable Oil Refining Processes

2021 ◽  
Vol 2 (1) ◽  
pp. 74-91
Author(s):  
Beatrice Casali ◽  
Elisabetta Brenna ◽  
Fabio Parmeggiani ◽  
Davide Tessaro ◽  
Francesca Tentori
Keyword(s):  
Fatty Acids ◽  
Free Fatty Acids ◽  
Vegetable Oil ◽  
Lipase Production ◽  
Oil Refining ◽  
Flow Mode ◽  
Acid Oil ◽  
Industrial Level ◽  
Vegetable Oil Refining ◽  
Hydrolysis Of

The review will discuss the methods that have been optimized so far for the enzymatic hydrolysis of soapstock into enriched mixtures of free fatty acids, in order to offer a sustainable alternative to the procedure which is currently employed at the industrial level for converting soapstock into the by-product known as acid oil (or olein, i.e., free fatty acids removed from raw vegetable oil, dissolved in residual triglycerides). The further biocatalyzed manipulation of soapstock or of the corresponding acid oil for the production of biodiesel and fine chemicals (surfactants, plasticizers, and additives) will be described, with specific attention given to processes performed in continuous flow mode. The valorization of soapstock as carbon source in industrial lipase production will be also considered.

scholarly journals Determination of free fatty acids in crude vegetable oil samples obtained by high-pressure processes

2021 ◽  
pp. 100166
Author(s):  
Carolina Medeiros Vicentini-Polette ◽  
Paulo Rodolfo Ramos ◽  
Cintia Bernardo Gonçalves ◽  
Alessandra Lopes De Oliveira
Keyword(s):  
Fatty Acids ◽  
High Pressure ◽  
Free Fatty Acids ◽  
Vegetable Oil

Effect of Dietary Vegetable Oil Supplementation on C18 Fatty Acids and Conjugated Linoleic Acid Production; An In vitro Fermentation Study

2013 ◽  
Vol 12 (6) ◽  
pp. 516-520 ◽  
Author(s):  
Julakorn Panatuk ◽  
Suthipong Uriyapongs ◽  
Chainarong Nawanukraw ◽  
Chirasak Phoemchala ◽  
Pitukpol Pornanake
Keyword(s):  
Fatty Acids ◽  
Linoleic Acid ◽  
Conjugated Linoleic Acid ◽  
Vegetable Oil ◽  
Acid Production ◽  
In Vitro Fermentation

Remediation of Floating Vegetable Oil Spills by Sedimentation Followed by Anaerobic Biodegradation

2003 ◽  
Vol 2003 (1) ◽  
pp. 387-392 ◽  
Author(s):  
Zhengkai Li ◽  
Robert J. Downer ◽  
Brian A. Wrenn
Keyword(s):  
Fatty Acids ◽  
Free Fatty Acids ◽  
Vegetable Oil ◽  
Light Emission ◽  
Solid Phase ◽  
Sediment Toxicity ◽  
Ferric Hydroxide ◽  
Anaerobic Biodegradation ◽  
Sediment Concentration ◽  
Oil Biodegradation

ABSTRACT Floating vegetable oil can be effectively removed from the water surface and the water column as negatively buoyant oil-mineral aggregates by addition of a dense mineral, such as clay. In bench-scale experiments, it is possible to remove virtually all of the floating oil by addition of a sufficiently large dose of clay (>10 g clay/g oil). Once present in the sediments, vegetable oil can be completely transformed to harmless end products (e.g., carbon dioxide and methane) by naturally occurring microbial populations. Transient production of toxic intermediates (probably free fatty acids), measured as a reduction in sediment EC50 using the Microtox Solid-Phase Test (SPT), was observed during anaerobic biodegradation. The EC50 is the sediment concentration required to reduce light emission by bioluminescent bacteria by 50%. Addition of amorphous ferric hydroxide as an alternative electron acceptor stimulated the rate of vegetable oil biodegradation, but had no effect on the Microtox EC50. Alternative factors, including clay and calcium, were tested for their ability to reduce the transient toxicity by reducing the bioavailability of the free fatty acids. Calcium, and especially calcium plus clay, reduced the rate and extent of vegetable oil biodegradation but had no effect on the sediment toxicity as measured by the Microtox SPT. Only oil biodegradation significantly reduced the sediment toxicity.

Cyclization of Unsaturated Fatty Acids by Montmorillonite and Metal Oxides Catalysts for the Recycle of Waste Vegetable Oil

2015 ◽  
Vol 32 (1) ◽  
pp. 37-45
Author(s):  
Kyun Joo Park ◽  
◽  
Minyoung Kim ◽  
Seunghwan Seok ◽  
Young-Wun Kim ◽  
...  
Keyword(s):  
Fatty Acids ◽  
Metal Oxides ◽  
Vegetable Oil ◽  
Unsaturated Fatty Acids ◽  
Waste Vegetable Oil

Variables affecting homogeneous acid catalyst recoverability and reuse after esterification of concentrated omega-9 polyunsaturated fatty acids in vegetable oil triglycerides

2008 ◽  
Vol 10 (12) ◽  
pp. 1331 ◽  
Author(s):  
Matthew B. Boucher ◽  
Steven A. Unker ◽  
Kyle R. Hawley ◽  
Benjamin A. Wilhite ◽  
James D. Stuart ◽  
...  
Keyword(s):  
Fatty Acids ◽  
Polyunsaturated Fatty Acids ◽  
Vegetable Oil ◽  
Acid Catalyst ◽  
Homogeneous Acid
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