Evaluation of the novel Soxflo technique for rapid extraction of crude fat in foods and animal feeds
The new Soxflo instrument was evaluated for the determination of crude fat in foods and animal feeds. Samples are packed into small columns and extracted with petroleum ether at room temperature. The Soxflo yielded accurate data from foods, ranging from 0.4 to 73.2% crude fat, compared with Soxhlet...
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| Veröffentlicht in: | Journal of AOAC International 1999-11, Vol.82 (6), p.1369-1374 |
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| container_title | Journal of AOAC International |
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| creator | BROWN, R. H MUELLER-HARVEY, I |
| description | The new Soxflo instrument was evaluated for the determination of crude fat in foods and animal feeds. Samples are packed into small columns and extracted with petroleum ether at room temperature. The Soxflo yielded accurate data from foods, ranging from 0.4 to 73.2% crude fat, compared with Soxhlet extractions and Certified Reference Materials, for which recoveries averaged 99.7 and 100.7%, respectively. Relative standard deviations (1.81%) were approximately half those of Soxhlet extractions (3.68%). Regression analysis of the data suggested that there was no proportional bias. A small but acceptable constant bias was measured. Soxflo extractions are easy to perform and take approximately 1 h to complete. The main difference between the Soxflo and Soxhlet techniques lies in the extraction procedure. Estimated savings during extractions are in time (85% reduction), energy (95%), cooling water (100%), and solvents (50%). Soxflo extractions are, therefore, more environmentally friendly than Soxhlet extractions. |
| doi_str_mv | 10.1093/jaoac/82.6.1369 |
| format | Article |
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H ; MUELLER-HARVEY, I</creator><creatorcontrib>BROWN, R. H ; MUELLER-HARVEY, I</creatorcontrib><description>The new Soxflo instrument was evaluated for the determination of crude fat in foods and animal feeds. Samples are packed into small columns and extracted with petroleum ether at room temperature. The Soxflo yielded accurate data from foods, ranging from 0.4 to 73.2% crude fat, compared with Soxhlet extractions and Certified Reference Materials, for which recoveries averaged 99.7 and 100.7%, respectively. Relative standard deviations (1.81%) were approximately half those of Soxhlet extractions (3.68%). Regression analysis of the data suggested that there was no proportional bias. A small but acceptable constant bias was measured. Soxflo extractions are easy to perform and take approximately 1 h to complete. The main difference between the Soxflo and Soxhlet techniques lies in the extraction procedure. Estimated savings during extractions are in time (85% reduction), energy (95%), cooling water (100%), and solvents (50%). Soxflo extractions are, therefore, more environmentally friendly than Soxhlet extractions.</description><identifier>ISSN: 1060-3271</identifier><identifier>EISSN: 1944-7922</identifier><identifier>DOI: 10.1093/jaoac/82.6.1369</identifier><identifier>PMID: 10589491</identifier><language>eng</language><publisher>Gaithersburg, MD: AOAC International</publisher><subject>Adsorption ; Animal Feed - analysis ; Biological and medical sciences ; Chemistry Techniques, Analytical - instrumentation ; Chemistry Techniques, Analytical - methods ; Dietary Fats - isolation & purification ; Food Analysis - methods ; Food industries ; Fundamental and applied biological sciences. 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H</creatorcontrib><creatorcontrib>MUELLER-HARVEY, I</creatorcontrib><title>Evaluation of the novel Soxflo technique for rapid extraction of crude fat in foods and animal feeds</title><title>Journal of AOAC International</title><addtitle>J AOAC Int</addtitle><description>The new Soxflo instrument was evaluated for the determination of crude fat in foods and animal feeds. Samples are packed into small columns and extracted with petroleum ether at room temperature. The Soxflo yielded accurate data from foods, ranging from 0.4 to 73.2% crude fat, compared with Soxhlet extractions and Certified Reference Materials, for which recoveries averaged 99.7 and 100.7%, respectively. Relative standard deviations (1.81%) were approximately half those of Soxhlet extractions (3.68%). Regression analysis of the data suggested that there was no proportional bias. A small but acceptable constant bias was measured. Soxflo extractions are easy to perform and take approximately 1 h to complete. The main difference between the Soxflo and Soxhlet techniques lies in the extraction procedure. Estimated savings during extractions are in time (85% reduction), energy (95%), cooling water (100%), and solvents (50%). Soxflo extractions are, therefore, more environmentally friendly than Soxhlet extractions.</description><subject>Adsorption</subject><subject>Animal Feed - analysis</subject><subject>Biological and medical sciences</subject><subject>Chemistry Techniques, Analytical - instrumentation</subject><subject>Chemistry Techniques, Analytical - methods</subject><subject>Dietary Fats - isolation & purification</subject><subject>Food Analysis - methods</subject><subject>Food industries</subject><subject>Fundamental and applied biological sciences. 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H</creatorcontrib><creatorcontrib>MUELLER-HARVEY, I</creatorcontrib><collection>Pascal-Francis</collection><collection>Medline</collection><collection>MEDLINE</collection><collection>MEDLINE (Ovid)</collection><collection>MEDLINE</collection><collection>MEDLINE</collection><collection>PubMed</collection><collection>CrossRef</collection><collection>MEDLINE - Academic</collection><jtitle>Journal of AOAC International</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>BROWN, R. H</au><au>MUELLER-HARVEY, I</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Evaluation of the novel Soxflo technique for rapid extraction of crude fat in foods and animal feeds</atitle><jtitle>Journal of AOAC International</jtitle><addtitle>J AOAC Int</addtitle><date>1999-11-01</date><risdate>1999</risdate><volume>82</volume><issue>6</issue><spage>1369</spage><epage>1374</epage><pages>1369-1374</pages><issn>1060-3271</issn><eissn>1944-7922</eissn><abstract>The new Soxflo instrument was evaluated for the determination of crude fat in foods and animal feeds. Samples are packed into small columns and extracted with petroleum ether at room temperature. The Soxflo yielded accurate data from foods, ranging from 0.4 to 73.2% crude fat, compared with Soxhlet extractions and Certified Reference Materials, for which recoveries averaged 99.7 and 100.7%, respectively. 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| ispartof | Journal of AOAC International, 1999-11, Vol.82 (6), p.1369-1374 |
| issn | 1060-3271 1944-7922 |
| language | eng |
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| source | MEDLINE; Oxford University Press Journals All Titles (1996-Current) |
| subjects | Adsorption Animal Feed - analysis Biological and medical sciences Chemistry Techniques, Analytical - instrumentation Chemistry Techniques, Analytical - methods Dietary Fats - isolation & purification Food Analysis - methods Food industries Fundamental and applied biological sciences. Psychology General aspects Methods of analysis, processing and quality control, regulation, standards Solvents |
| title | Evaluation of the novel Soxflo technique for rapid extraction of crude fat in foods and animal feeds |
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