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St. Blanc M, Banse H, Retif M, Arana‐Valencia N, Keowen ML, Garza F, Liu C, Gray LF, Andrews FM. Effects of supplements containing turmeric and devil’s claw on equine gastric ulcer scores and gastric juice pH. EQUINE VET EDUC 2020. [DOI: 10.1111/eve.13404] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Affiliation(s)
- M. St. Blanc
- Equine Health Studies Program Department of Veterinary Clinical Sciences School of Veterinary Medicine Louisiana State University Baton Rouge LouisianaUSA
| | - H. Banse
- Equine Health Studies Program Department of Veterinary Clinical Sciences School of Veterinary Medicine Louisiana State University Baton Rouge LouisianaUSA
| | - M. Retif
- Equine Health Studies Program Department of Veterinary Clinical Sciences School of Veterinary Medicine Louisiana State University Baton Rouge LouisianaUSA
| | - N. Arana‐Valencia
- Equine Health Studies Program Department of Veterinary Clinical Sciences School of Veterinary Medicine Louisiana State University Baton Rouge LouisianaUSA
| | - M. L. Keowen
- Equine Health Studies Program Department of Veterinary Clinical Sciences School of Veterinary Medicine Louisiana State University Baton Rouge LouisianaUSA
| | - F. Garza
- Equine Health Studies Program Department of Veterinary Clinical Sciences School of Veterinary Medicine Louisiana State University Baton Rouge LouisianaUSA
| | - C.‐C. Liu
- Equine Health Studies Program Department of Veterinary Clinical Sciences School of Veterinary Medicine Louisiana State University Baton Rouge LouisianaUSA
| | - L. F. Gray
- SmartPak Equine Plymouth MassachusettsUSA
| | - F. M. Andrews
- Equine Health Studies Program Department of Veterinary Clinical Sciences School of Veterinary Medicine Louisiana State University Baton Rouge LouisianaUSA
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Igarashi T, Aursand M, Sacchi R, Paolillo L, Nonaka M, Wada Y, Arata Y, Bildsoe H, Falcigno L, Fauhl C, Guillou C, Halvorsen J, Honma E, Ijuuin Y, Kushida K, Martin GJ, Miyake Y, Optum OI, Oshima Y, Remaud G, Retif M, Robins R, Satake M, Shimidzu N, Tsuchiya F, Watanabe K, Watanuki C. Determination of Docosahexaenoic Acid and n-3 Fatty Acids in Refined Fish Oils by H-NMR Spectroscopy: IUPAC Interlaboratory Study. J AOAC Int 2019. [DOI: 10.1093/jaoac/85.6.1341] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [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
A high-resolution proton nuclear magnetic resonance (NMR) method for determining the concentration (mg/g) of docosahexaenoic acid (DHA), the molar proportion (mol%) of DHA, and the molar proportion of total n-3 fatty acids in fish oils was validated by an IUPAC interlaboratory study (the Commission VI-6 on Oils, Fats, and Derivatives WG 3/98). Thirteen laboratories from 5 countries tested 6 pairs of blind duplicate fish oils: a refined tuna oil, 2 extracted tuna oils, an extracted bonito oil, an extracted salmon oil, and an extracted sardine oil ranging from 9 to 30 mol% DHA and from 20 to 35 mol% n-3 fatty acids. Before 1D-proton NMR measurements with 300–500 MHz instruments, oil samples were weighed and diluted with deuterochloroform solution containing ethylene glycol dimethyl ether as internal standard. To achieve precise performance, a detailed procedure for signal area measurement was described in the protocol, and all participants were instructed about the critical importance of following the protocol. Statistical performances with invalid and outlier data removed were as follows: repeatability relative standard deviations (RSDr) ranged from 0.91 to 2.62% and reproducibility relative standard deviation (RSDR) ranged from 1.73 to 4.27% for DHA concentration (mg/g); RSDr ranged from 0.39 to 2.06%, and RSDR ranged from 0.59 to 3.46% for mol% DHA; RSDr ranged from 0.23 to 0.90% and RSDR ranged from 0.85 to 2.01% for mol% total n-3 fatty acids. The method is expected to be recommended by IUPAC.
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Affiliation(s)
- Tomoji Igarashi
- Japan Marine Oil Association, 32-7 Motoyoyogi-cho, Shibuya-ku, 151-0062, Tokyo, Japan; Japan Food Research Laboratories, Tama Laboratory, 6-11-10 Nagayama, Tama-shi, 206-0025, Tokyo, Japan
| | - Marit Aursand
- SINTEF, Division of Applied Chemistry, Fisheries and Aquaculture, N-7034, Trondheim, Norway
| | - Raffaele Sacchi
- University of Naples Federico II, Department of Food Science, Parco Gussone, 80055 Portici, Italy
| | - Livio Paolillo
- University of Naples Federico II, Department of Chemistry, via Mezzocannone 4, 80134 Naples, Italy
| | - Michio Nonaka
- Japan Marine Oil Association, 32-7 Motoyoyogi-cho, Shibuya-ku, 151-0062, Tokyo, Japan
| | - Y Wada
- Tokyo University of Fisheries, Department of Food Science and Technology, 4-5-7 Konan, Minato-ku, 108-8477, Tokyo, Japan
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