2021
DOI: 10.3390/suschem2010006
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Enzymatic Methods for the Manipulation and Valorization of Soapstock from Vegetable Oil Refining Processes

Abstract: 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 o… Show more

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Cited by 20 publications
(20 citation statements)
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“…In [16], the fatty acid production from soapstock by hydrolysis was investigated. The enzymatic catalysts achieved a maximum conversion of 70 %.…”
Section: The Feature Of This Work Is the Study Of The Effect Of Salting Out Conditions Of Saponified Soapstock On The Yield And Neutralizmentioning
confidence: 99%
See 2 more Smart Citations
“…In [16], the fatty acid production from soapstock by hydrolysis was investigated. The enzymatic catalysts achieved a maximum conversion of 70 %.…”
Section: The Feature Of This Work Is the Study Of The Effect Of Salting Out Conditions Of Saponified Soapstock On The Yield And Neutralizmentioning
confidence: 99%
“…A promising technology is the processing of soapstock into fatty acids by saponification and subsequent salting out to increase the efficiency of fatty acid extraction. According to the literature data [9,[12][13][14][15][16][17], there is little information on the relationship between the salting out conditions of saponified soapstock and the yield and quality of fatty acids. Thus, research to determine rational conditions for fatty acid production from soapstock, including the stages of saponifi-tural enterprises in 2020 was 39.4 %, the highest among the main products.…”
Section: The Feature Of This Work Is the Study Of The Effect Of Salting Out Conditions Of Saponified Soapstock On The Yield And Neutralizmentioning
confidence: 99%
See 1 more Smart Citation
“…Soapstock is the by-product obtained from the neutralization step of the refining process to which vegetable seed oil is submitted after extraction. [2] It consists of an alkaline aqueous emulsion of lipids, the composition of which depends on the botanical origin of the seeds and the conditions of refining and storage. It usually contains water (45-50 %, percentages vary according to the operating conditions), fatty acid sodium salts (determined as free acids, 10 %), triacylglycerols and diacylglycerols (12 %), residual phospholipids (9 %), pigments and other minor components (24 %).…”
Section: Introductionmentioning
confidence: 99%
“…Over the last few years, our research group has become interested in investigating the use of soapstock as a renewable source of fatty acids, to be submitted to further chemo‐enzymatic manipulation for the synthesis of fine chemicals. Soapstock is the by‐product obtained from the neutralization step of the refining process to which vegetable seed oil is submitted after extraction [2] . It consists of an alkaline aqueous emulsion of lipids, the composition of which depends on the botanical origin of the seeds and the conditions of refining and storage.…”
Section: Introductionmentioning
confidence: 99%