| The influence of temperature and pressure factors in supercritical fluid extraction for optimizing nonpolar lipid extraction from buttermilk powder. | |
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MedLine Citation:
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PMID: 19164655 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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The milk fat globule membrane, readily available in buttermilk, contains complex lipids claimed to be beneficial to humans. Phospholipids, including sphingolipids, exhibit antioxidative, anticarcinogenic, and antiatherogenic properties and have essential roles in numerous cell functions. Microfiltration coupled with supercritical fluid extraction (SFE) may provide a method for removing triacylglycerols while concentrating these nutritionally valuable lipids into a novel ingredient. Therefore, SFE as a method for phospholipid concentration needs to be optimized for triacylglycerol removal in buttermilk. The SFE conditions were assessed using a general full factorial design; the experimental factors were pressure (15, 25, and 35 MPa) and temperature (40, 50, and 60 degrees C). Particularly interesting is that only triacylglycerols were removed from buttermilk powder. Little to no protein loss or aggregation was observed compared with the untreated buttermilk powder. Calculated theoretical values showed a linear increase for lipid solubility as pressure, temperature, or both were increased; however, experimental values showed nonlinearity, as an effect of temperature. In addition, the particular SFE parameters of 35 MPa and 50 degrees C displayed enhanced extraction efficiency (70% total lipid reduction). |
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Authors:
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A J Spence; R Jimenez-Flores; M Qian; L Goddik |
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Publication Detail:
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Type: Journal Article; Research Support, Non-U.S. Gov't |
Journal Detail:
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Title: Journal of dairy science Volume: 92 ISSN: 1525-3198 ISO Abbreviation: J. Dairy Sci. Publication Date: 2009 Feb |
Date Detail:
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Created Date: 2009-01-23 Completed Date: 2009-02-09 Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 2985126R Medline TA: J Dairy Sci Country: United States |
Other Details:
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Languages: eng Pagination: 458-68 Citation Subset: IM |
Affiliation:
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Department of Food Science and Technology, Oregon State University, Corvallis 97330, USA. rjimenez@calpoly.edu |
Export Citation:
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| MeSH Terms | |
Descriptor/Qualifier:
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Chromatography, Supercritical Fluid Cultured Milk Products / chemistry* Food Technology / methods* Lipids / chemistry* Powders / chemistry* Pressure* Solubility Temperature* |
| Chemical | |
Reg. No./Substance:
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0/Lipids; 0/Powders |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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