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Ngeh-Ngwainbi J, Lin J, Chandler A, Bannon C, Carr K, Condra C, Fagerle R, Fein R, Fusnacht J, Graff T, Hussein A, Kanno A, Kraft N, Kraus D, Marcuson D, Mitchell B, Oehrl L, Oles P, Patzer S, Sackett P, Salata S, Buick D, Sinclair A, Wo C, Scheelings P, Sudler M, Sullivan D, Williams A, Zygmunt L. Determination of Total, Saturated, Unsaturated, and Monounsaturated Fats in Cereal Products by Acid Hydrolysis and Capillary Gas Chromatography: Collaborative Study. J AOAC Int 2020. [DOI: 10.1093/jaoac/80.2.359] [Citation(s) in RCA: 29] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022]
Abstract
Abstract
Fifteen laboratories participated in a collaborative study to determine total, saturated, unsaturated, and monounsaturated fats in cereal products by gas chromatographic (GC) analysis of fatty acid methyl esters (FAMEs). Cereal products, representing a wide range of cereal grains and processes, were hydrolyxed in 8N HCI and extracted with ethyl and petroleum ethers. FAMEs were produced by the reaction of the mixed ether extracts with sodium hydroxide in methanol (NaOH/MeOH) and then with boron trifluoride reagent (14% BF3 in MeOH). They were quantitatively determined by capillary GC. Total fat was calculated as the sum of individual fatty acids expressed as triglyceride equivalents in accordance with nutrition labeling guidelines. Saturated, unsaturated, and monounsaturated fats were calculated as sums of individual fatty acids. The total fat contents of samples ranged from 0.56 to 12.64%. A split design was used to determine performance parameters of results obtained by 15 laboratories on 24 samples. Of the 24 samples, 7 were blind duplicates and 5 were independent materials. Statistical analysis for total fat yielded a relative standard deviation for repeatability (RSDr) range of 1.32 to 13.30% and a relative standard deviation for reproducibility (RSDr) range of 4.42 to 22.82%. The goal of this study was to determine total fat, saturated fat, unsaturated, and monounsaturated fat in cereal-based products by complete extraction, methylation, and quantitation of total fatty acids. The acid hydrolysis-capillary GC method for determining total, saturated, unsaturated, and monosaturated fats in cereal products has been adopted by AOAC INTERNATIONAL.
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Affiliation(s)
| | - James Lin
- Kellogg Company, 235 Porter St, Battle Creek, MI 49017
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Kendrew P, Ward F, Buick D, Wright D, Horne R, Kendrew P, Ward F. Satisfaction with information and its relationship with adherence in patients with chronic pain. International Journal of Pharmacy Practice 2011. [DOI: 10.1111/j.2042-7174.2001.tb01065.x] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Abstract
Focal points
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Affiliation(s)
- P Kendrew
- St James' University Hospital, Leeds
| | - F Ward
- St James' University Hospital, Leeds
| | - D Buick
- Centre for Health Care Research, University of Brighton
| | - D Wright
- School of Pharmacy, University of Bradford
| | - R Horne
- Centre for Health Care Research, University of Brighton
| | - P Kendrew
- St James' University Hospital, Leeds
| | - F Ward
- St James' University Hospital, Leeds
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Cooper V, Buick D, Horne R, Lambert N, Gellaitry G, Leake H, Fisher M. Perceptions of HAART among gay men who declined a treatment offer: preliminary results from an interview-based study. AIDS Care 2002; 14:319-28. [PMID: 12042077 DOI: 10.1080/09540120220123694] [Citation(s) in RCA: 31] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Abstract
As part of a prospective study of treatment decision making among people with HIV infection, we explored perceptions of HAART in a cohort who declined a treatment offer. This was a qualitative study in which 26 gay men were interviewed in relation to their views about HAART soon after treatment was recommended by their HIV physician. Fifteen themes were associated with the decision to decline HAART. These were grouped under three broad categories: doubts about personal necessity for HAART, concerns about potential adverse effects of taking HAART and satisfaction with the amount of personal control over the decision. These findings provide new insights into the type of beliefs that might inform people's evaluation of their perceived need for HAART and their concerns about HAART. Initiatives to support informed decisions should take account of these perceptions.
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Affiliation(s)
- V Cooper
- Centre for Health Care Research, University of Brighton, UK.
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