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Abernethy G, Otter D, Arnold K, Austad J, Christiansen S, Ferreira I, Irvine F, Marsh C, Massom LR, Otter D, Pearce K, Stevens J, Szpylka J, Vyas P, Woollard D, Wu C. Determination of Immunoglobulin G in Bovine Colostrum and Milk Powders, and in Dietary Supplements of Bovine Origin by Protein G Affinity Liquid Chromatography: Collaborative Study. J AOAC Int 2019. [DOI: 10.1093/jaoac/93.2.622] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [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
An AOAC collaborative study was conducted to evaluate an affinity LC procedure for measuring immunoglobulin G (IgG) in selected dairy powders. The powders were extracted with 0.15 M sodium chloride solution and the pH was adjusted to 4.6 to precipitate caseins, which would otherwise lead to an overestimation of IgG. The analyte was then bound to a commercially available Protein G affinity cartridge and selectively eluted with a glycine buffer at pH 2.5. Detection was at 280 nm and quantification was made against a calibration curve prepared from bovine serum IgG. The samples analyzed included the likely matrixes for which this assay will find commercial use, namely, high- and low-protein-content colostrum powders, tablets containing colostrum powder, and some IgG-containing dairy powders; milk protein isolate, whey protein concentrate, and skim milk powder. Eleven laboratories provided data for the study and assayed blind duplicates of six materials. The repeatability RSD values ranged from 2.1 to 4.2 and the reproducibility RSD values ranged from 6.4 to 18.5. The Protein G method with casein removal has adequate reproducibility for measuring IgG in colostrum-derived powders that are traded on the basis of IgG content as a colostral marker.
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Affiliation(s)
- Grant Abernethy
- Fonterra Co-operative Group Ltd, Private Bag 11029, Palmerston North 4442, New Zealand
| | - Don Otter
- AgResearch Ltd, Grasslands Research Centre, Tennent Dr, Private Bag 11008, Palmerston North 4442, New Zealand
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Audino S, Angerhofer M, Atkins P, Brauninger RM, Brown PN, Burdette CQ, Clifford R, Cook JM, Donelson J, George K, Gibson P, Harris HL, Hartlein T, Hodgin G, Inerowicz D, Johnson HE, Joseph G, Konings EJM, Kowalski JA, Krogull MK, Kuzdzal S, Lockerman R, Ludwig C, Marrongelli C, Mastovska K, Mudge E, Niehaus GD, Nishimura M, Phillips MM, Phinney CS, Reif K, Rigdon A, Rimmer CA, Ruthenburg T, Solyom AM, Stenerson K, Sudberg S, Sutton A, Szpylka J, Weitzel J, Winkler P, Wong S, Wurzer J, You H, Coates SG. AOAC SMPR® 2017.001. Standard Method Performance Requirements (SMPRs) for Quantitation of Cannabinoids in Cannabis Concentrates. J AOAC Int 2019; 100:1200-1203. [PMID: 28802316 DOI: 10.5740/jaoacint.smpr2017_001] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Affiliation(s)
| | | | | | | | | | | | | | - Jo Marie Cook
- Florida Department of Agriculture and Consumer Services
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3
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Audino S, Angerhofer M, Atkins P, Brauninger RM, Brown PN, Burdette CQ, Clifford R, Cook JM, Donelson J, George K, Gibson P, Harris HL, Hartlein T, Hodgin G, Inerowicz D, Johnson HE, Joseph G, Konings EJM, Kowalski JA, Krogull MK, Kuzdzal S, Lockerman R, Ludwig C, Marrongelli C, Mastovska K, Mudge E, Niehaus GD, Nishimura M, Phillips MM, Phinney CS, Reif K, Rigdon A, Rimmer CA, Ruthenburg T, Solyom AM, Stenerson K, Sudberg S, Sutton A, Szpylka J, Weitzel J, Winkler P, Wong S, Wurzer J, You H, Coates SG. AOAC SMPR® 2017.002. J AOAC Int 2019; 100:1204-1207. [PMID: 28802317 DOI: 10.5740/jaoacint.smpr2017_002] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Affiliation(s)
| | | | | | | | | | | | | | - Jo Marie Cook
- Florida Department of Agriculture and Consumer Services
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DeVries JW, Rader JI, Keagy PM, Hudson CA, Angyal G, Arcot J, Castelli M, Doreanu N, Hudson C, Lawrence P, Martin J, Peace R, Rosner; L, Strandler HS, Szpylka J, van den Berg H, Wo C, Wurz C. Microbiological Assay-Trienzyme Procedure for Total Folates in Cereals and Cereal Foods: Collaborative Study. J AOAC Int 2019. [DOI: 10.1093/jaoac/88.1.5] [Citation(s) in RCA: 45] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Abstract
Abstract
In 1996, U.S. Food and Drug Administration regulations mandated the fortification of enriched cereal-grain products with folic acid, thereby emphasizing the need for validated methods for total folates in foods, particularly cereal products. The AOAC Official Methods (944.12, 960.46) currently used for the analysis of folate in foods for compliance purposes are microbiological methods. When the fortification regulations were finalized, no Official AOAC or Approved AACC methods for folate in cereal-grain products were in place. The AOAC Official Method (992.05) for folic acid in infant formula does not incorporate important improvements in the extraction procedure and was not considered suitable for the analysis of folates in foods in general. Amicrobiological assay protocol using a trienzyme extraction procedure was prepared and submitted for comments to 40 laboratories with recognized experience in folate analysis. On the basis of comments, the method was revised to have the conjugase (gamma-glutamyl-carboxy-peptidase) treatment follow a protease treatment, to include the use of cryoprotected inoculum, and to include the spectroscopic standardization of the standard and optional use of microtiter plates. Thirteen laboratories participated in a collaborative study of 10 required and 10 optional cereal-grain products, including flour, bread, cookies, baking mixes, and ready-to-eat breakfast cereals. The majority of the participating laboratories performed the assay by the standard test tube method; others used the microtiter plate modification for endpoint quantitation with equal success. For the required products, the relative standard deviation between laboratories (RSDR) ranged from 7.4 to 21.6% for 8 fortified (or enriched) products compared with expected (Horwitz equation-based) values of 11–20%. RSDR values were higher (22.7–52.9%) for 2 unfortified cereal-grain products. For the optional products, the RSDR ranged from 1.8 to 11.2% for 8 fortified products. RSDR values were higher (27.9–28.7%) for 2 unfortified cereal-grain products. Based on the results of the collaborative study, the microbiological assay with trienzyme extraction is recommended for adoption as Official First Action.
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Affiliation(s)
- Jonathan W DeVries
- Medallion Laboratories, General Mills Inc., 9000 Plymouth Ave North, Minneapolis, MN 55427
| | - Jeanne I Rader
- U.S. Food and Drug Administration, Center for Food Safety and Nutrition, 5100 Paint Branch Pkwy, College Park, MD 20740-3835
| | - Pamela M Keagy
- U.S. Department of Agriculture, Western Regional Research Center, 800 Buchanan St, Albany, CA 94710
| | - Carol A Hudson
- U.S. Department of Agriculture, Western Regional Research Center, 800 Buchanan St, Albany, CA 94710
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Szpylka J, DeVries JW, Bhandari S, Bui MH, Ji D, Konings E, Lewis R, Maas P, Parish H, Post B, Schierle J, Sullivan; D, Taylor A, Wang J, Ware G, Woollard D, Wu T. Determination of β-Carotene in Supplements and Raw Materials by Reversed-Phase High Pressure Liquid Chromatography: Collaborative Study. J AOAC Int 2019. [DOI: 10.1093/jaoac/88.5.1279] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
Abstract
Twelve laboratories representing 4 countries participated in an interlaboratory study conducted to determine all-trans-β-carotene and total β-carotene in dietary supplements and raw materials. Thirteen samples were sent as blind duplicates to the collaborators. Results obtained from 11 laboratories are reported. For products composed as softgels and tablets that were analyzed for total β-carotene, the reproducibility relative standard deviation (RSDR) ranged from 3.35 to 23.09% and the HorRat values ranged from 1.06 to 3.72. For these products analyzed for trans β-carotene, the reproducibility relative standard deviation (RSDR) ranged from 4.28 to 22.76% and the HorRat values ranged from 0.92 to 3.37. The RSDr and HorRat values in the analysis of a beadlet raw material were substantial and it is believed that the variability within the material itself introduced significant variation in subsampling. The method uses high pressure liquid chromatography (LC) in the reversed-phase mode with visible light absorbance for detection and quantitation. If high levels of α-carotenes are present, a second LC system is used for additional separation and quantitation of the carotene species. It is recommended that the method be adopted as an AOAC Official Method.
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Affiliation(s)
- John Szpylka
- Medallion Laboratories Division of General Mills, 9000 Plymouth Ave N, Minneapolis, MN 55427-3870
| | - Jonathan W DeVries
- Medallion Laboratories Division of General Mills, 9000 Plymouth Ave N, Minneapolis, MN 55427-3870
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Szpylka J, Thiex N, Acevedo B, Albizu A, Angrish P, Austin S, Bach Knudsen KE, Barber CA, Berg D, Bhandari SD, Bienvenue A, Cahill K, Caldwell J, Campargue C, Cho F, Collison MW, Cornaggia C, Cruijsen H, Das M, De Vreeze M, Deutz I, Donelson J, Dubois A, Duchateau GS, Duchateau L, Ellingson D, Gandhi J, Gottsleben F, Hache J, Hagood G, Hamad M, Haselberger PA, Hektor T, Hoefling R, Holroyd S, Lloyd Holt D, Horst JG, Ivory R, Jaureguibeitia A, Jennens M, Kavolis DC, Kock L, Konings EJM, Krepich S, Krueger DA, Lacorn M, Lassitter CL, Lee S, Li H, Liu A, Liu K, Lusiak BD, Lynch E, Mastovska K, McCleary BV, Mercier GM, Metra PL, Monti L, Moscoso CJ, Narayanan H, Parisi S, Perinello G, Phillips MM, Pyatt S, Raessler M, Reimann LM, Rimmer CA, Rodriguez A, Romano J, Salleres S, Sliwinski M, Smyth G, Stanley K, Steegmans M, Suzuki H, Swartout K, Tahiri N, Eyck RT, Torres Rodriguez MG, Van Slate J, Van Soest PJ, Vennard T, Vidal R, Vinbord Hedegaard RS, Vrasidas I, Vrasidas Y, Walford S, Wehling P, Winkler P, Winter R, Wirthwine B, Wolfe D, Wood L, Woollard DC, Yadlapalli S, Yan X, Yang J, Yang Z, Zhao G. Standard Method Performance Requirements (SMPRs®) 2018.002: Fructans in Animal Food (Animal Feed, Pet Food, and Ingredients). J AOAC Int 2019; 101:1283-1284. [PMID: 29986808 DOI: 10.5740/jaoacint.smpr2018.002] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Affiliation(s)
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | - Kai Liu
- Eurofins Nutrition Analysis Center
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Boison J, Allred L, Almy D, Anderson L, Baumert J, Bhandari S, Cebolla A, Chen Y, Crowley E, Diaz-Amigo C, Doi H, Don C, Downs M, Dubiel N, Dyer B, Emerson L, Farrow M, Fritz R, Galera C, Garber E, Godefroy S, Grace T, Hochegger R, Johnson K, Kasturi P, Koerner T, Lacorn M, Massong F, Meinhardt P, Mui T, O'Meara M, Pan SJ, Popping B, Prinster M, Quesada E, Radcliffe S, Scherf K, Sharma G, Shoji M, Stoughton M, Sweeney L, Szpylka J, Taylor S, Tittlemier S, Torgler C, Wehling P, Yeung J, Zweigenbaum J. Standard Method Performance Requirements (SMPRs®) 2017.021: Quantitation of Wheat, Rye, and Barley Gluten in Oats. J AOAC Int 2019; 101:1238-1242. [PMID: 29986797 DOI: 10.5740/jaoacint.smpr2017.021] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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Bhandari SD, Gao M, Szpylka J. Total Folate in Infant Formula and Adult Nutritionals by Trienzyme Extraction and LC-MS/MS Quantitation: A Multilaboratory Testing Study, Final Action 2011.06. J AOAC Int 2018; 101:1881-1894. [PMID: 30049295 DOI: 10.5740/jaoacint.18-0114] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [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: 11/17/2022]
Abstract
Background: The need for an updated reference method for folate was identified as a priority by the AOAC's Stakeholder Panel on Infant Formula and Adult Nutritionals (SPIFAN) in 2011. An Expert Review Panel (ERP) found AOAC Official MethodSM 2011.06 suitable for the purpose and approved it as a First Action Official Method. Objective: To determine the repeatability and reproducibility of Method 2011.06: Total Folate in Infant Formula and Adult Nutritionals by Trienzyme Extraction and LC-MS/MS Quantitation. Methods: A multilaboratory collaborative study was conducted. Eleven laboratories located in five countries participated and completed analysis of all multilaboratory testing (MLT) samples. The study was divided into two parts. In the first part, the laboratories analyzed two practice samples (blindly coded) using the updated folate Method 2011.06. The laboratories providing results within the expected range qualified for part two, in which they analyzed 11 MLT samples in blind duplicates. Results: The results were compared with the Standard Method Performance Requirements (SMPR 2011.006) established for folate. The precision results met the requirements stated in the SMPR for all of the samples. Repeatability and reproducibility relative standard deviations ranged from 3.5 to 6.6 and from 9.0 to 15.7%, respectively. Horwitz ratio values for all of the samples were well below 2 (0.61-1.06). Conclusions: The ERP determined that the method performance met the SMPR requirements in September 2017 after reviewing the presented MLT data. Highlights: The ERP recommended the method for Final Action status.
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Affiliation(s)
- Sneh D Bhandari
- Merieux NutriSciences, Silliker Food Science Center, 3600 Eagle Nest Dr, Crete, IL
| | - Ming Gao
- Merieux NutriSciences, Silliker Food Science Center, 3600 Eagle Nest Dr, Crete, IL
| | - John Szpylka
- Merieux NutriSciences, Silliker Food Science Center, 3600 Eagle Nest Dr, Crete, IL
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Zielinski G, Atkinson G, Bhandari SD, Burns P, Citrolo D, Farthing C, Glover B, Horkey A, Johnson HE, Kuszak A, Lin J, Lippert JA, Mudge E, Ofitserova M, Reimann LM, Solyom AM, Sullivan DM, Szpylka J, Travis J, Wubben JL, Yang J, You H, Young K, Coates SG. AOAC SMPR® 2017.011. Standard Method Performance Requirements (SMPRs) for Identification and Quantitation of Free Alpha Amino Acids in Dietary Ingredients and Supplements. J AOAC Int 2017; 100:1189-1191. [PMID: 28730972 DOI: 10.5740/jaoacint.smpr2017_011] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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Schaneberg BT, Brown PN, Bzhelyansky A, Chang T, Cunningham D, Gu L, Haesaerts G, Howell A, Johnson HE, Konings EJM, Krueger C, Liu H, Merkh K, Phillips MM, Phillips T, Reed J, Rimmer CA, Szpylka J, Yadlapalli S, Coates SG. AOAC SMPR® 2017.004. J AOAC Int 2017; 100:1210-1211. [PMID: 28802319 DOI: 10.5740/jaoacint.smpr2017_004] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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Schaneberg BT, Brown PN, Bzhelyansky A, Chang T, Cunningham D, Gu L, Haesaerts G, Howell A, Johnson HE, Konings EJM, Krueger C, Liu H, Merkh K, Phillips MM, Phillips T, Reed J, Rimmer CA, Szpylka J, Yadlapalli S, Coates SG. AOAC SMPR® 2017.003. J AOAC Int 2017; 100:1208-1209. [PMID: 28802318 DOI: 10.5740/jaoacint.smpr2017_003] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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Austad J, Barrett B, Betz JM, Burdette CQ, Don C, Erickson A, Griffiths J, Hildreth JB, Ingle P, Jennens M, Ji D, Joseph G, Kennedy DC, Mudge E, Noestheden M, Phillips MM, Phinney CS, Rettinger M, Richards LD, Rimmer CA, Sarma N, Sauza B, Schaneberg BT, Solyom AM, Sullivan DM, Szpylka J, Traub J, Walters DL, Woods JP, Yang J, Yoo SJ, Zhang T, Zhang W, Zhang Y, Zhu J, Zielinski G, Coates SG. AOAC SMPR® 2015.016. Standard Method Performance Requirements (SMPRs) for Determination of Vitamin D in Dietary Supplement Finished Products and Ingredients. J AOAC Int 2017; 100:1182-1184. [PMID: 28802311 DOI: 10.5740/jaoacint.smpr2015.016] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Affiliation(s)
| | | | | | | | | | | | | | | | | | | | - David Ji
- Analytical Laboratories in Anaheim, Inc
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Reidun I, Atkinson G, Bhandari S, Craft N, Horkey A, Kuszak A, Lippert JA, Mudge E, Rimmer K, Solyom A, Sommer W, Szpylka J, Wubben J, Yang J, You H. AOAC SMPR® 2017.013. Standard Method Performance Requirements (SMPRs) for Determination of Vitamins K₁ and K₂ in Dietary Supplements and Dietary Ingredients. J AOAC Int 2017; 100:1197-1198. [PMID: 28802315 DOI: 10.5740/jaoacint.smpr2017_013] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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Solyom AM, Betz JM, Brown PN, Bzhelyansky A, Chrisafis N, Embuscado ME, Figore H, Johnson HE, Joseph G, Kennedy DC, Kuszak A, Mudge E, Phillips MM, Phillips T, Richards LD, Rimmer CA, Sauza B, Schaneberg BT, Skamarack J, Sullivan DM, Szpylka J, Travis J, White T, Wubben JL, Yang J, Young K, Zhou J, Coates SG. AOAC SMPR(®) 2016.003. J AOAC Int 2017; 99:1102-1104. [PMID: 27455939 DOI: 10.5740/jaoacint.smpr2016.003] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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Konings EJM, Barrett WB, Beshore M, Beshore T, Buscher J, Crum H, Dave GT, Ebersole BE, Edwards JC, Fink S, Hurley EK, Jayabalan R, Joseph G, Kanaan R, LaBonia SJ, LaGory A, Mohindra D, Neal-Kababick J, Pham T, Phillips MM, Rimmer CA, Sharaf M, Skovbjerg J, Spedding G, Stenerson K, Stryffeler R, Sullivan DM, Szpylka J, Trout D, Yadlapalli S, Yang J, Zhang C, Coates SG. AOAC SMPR(®) 2016.001. J AOAC Int 2016; 99:1120-1121. [PMID: 27455944 DOI: 10.5740/jaoacint.smpr2016.001] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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16
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Myers R, Betz JM, Bøjstrup M, Craft NE, Figore H, Hall A, Joseph G, Kennedy D, Khachik F, Mudge E, Phillips MM, Phillips T, Richards LD, Rimmer CA, Schaneberg BT, Solyom AM, Sullivan DM, Szpylka J, Walters DL, White T, Yang J, Zielinski G, Coates SG. AOAC SMPR(®) 2016.004. J AOAC Int 2016; 99:1105-1106. [PMID: 27455940 DOI: 10.5740/jaoacint.smpr2016.004] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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Liska DJ, Cook CM, Wang DD, Szpylka J. Maillard reaction products and potatoes: have the benefits been clearly assessed? Food Sci Nutr 2016; 4:234-49. [PMID: 27004113 PMCID: PMC4779479 DOI: 10.1002/fsn3.283] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/19/2015] [Revised: 07/10/2015] [Accepted: 07/23/2015] [Indexed: 12/29/2022] Open
Abstract
Cooking foods affords numerous food safety benefits. During heating, Maillard reaction products (MRPs) are formed. MRPs contribute sensory aspects to food, including color, taste, and texture. One MRP, acrylamide, has been implicated in negative health outcomes; however, emerging data suggests MRPs may also deliver certain health benefits. The food industry has taken steps to decrease acrylamide formation, but the perception that high levels of acrylamide compromise the nutritional benefit of certain foods has continued. Potatoes are susceptible to MRP formation during cooking but also are considered an affordable, high nutrient content food. In particular, potatoes contribute significantly to fiber and potassium intakes in the U.S. population, two nutrients of need. How, then, should potatoes be judged for effects on health? A structured evidence assessment was conducted to identify literature, specifically clinical trials, on MRPs from potatoes and health, as well as nutritional contribution of potatoes. The results indicate limited human clinical data are available on negative health outcomes of potato-based MRPs, whereas potatoes are important contributors of key nutrients, such as fiber and potassium. Therefore, a balanced benefit-risk approach is warranted in order to assure that decreasing consumption of certain foods, like potatoes, does not lead to unintended consequences of nutrition inadequacies.
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Affiliation(s)
| | - Chad M. Cook
- Biofortis Research211 E. Lake St.AddisonIllinois 60101
| | - Ding Ding Wang
- D&V Systematic Consulting1945 Eastchester Rd.Apt 26DBronxNew York 10461
| | - John Szpylka
- Silliker, a Mérieux NutriSciences CompanyChicagoIllinois 60601
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Austad J, Barrett WB, Betz JM, Burdette CQ, Don C, Erickson A, Griffiths J, Hildreth JB, Ingle P, Jennens M, Ji D, Joseph G, Kennedy DC, Kuszak A, Mudge E, Noestheden M, Phillips MM, Phinney CS, Rettinger M, Richards LD, Rimmer CA, Sarma N, Sauza B, Schaneberg BT, Solyom AM, Sullivan DM, Szpylka J, Traub J, Walters DL, Woods JP, Yang J, Yoo SJ, Zhang T, Zhang W, Zhang Y, Zhu MJ, Zielinski G, Coates SG, Zhang W, Zhang Y, Zhu MJ, Zielinski G, Coates SG. AOAC SMPR 2015.016. J AOAC Int 2016; 99:320-322. [PMID: 28483003 DOI: 10.5740/jaoac.int.smpr2015.016] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Affiliation(s)
| | | | | | | | | | | | | | | | | | | | - David Ji
- Analytical Laboratories in Anaheim, Inc
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Zhang Y, Betz JM, Griffiths J, Hildreth JB, Jennens M, Ji D, Joseph G, Kennedy DC, Mudge E, Ofitserova M, Phillips MM, Phillips T, Richards LD, Rimmer CA, Royce S, Schaneberg BT, Solyom AM, Sullivan DM, Szpylka J, Traub J, Wood L, Yang J, Yoo SJ, Zhou J, Zhu J, Zielinski G, Coates SG. AOAC SMPR 2015.014. J AOAC Int 2016; 99:314-317. [PMID: 28483001 DOI: 10.5740/jaoac.int.smpr2015.014] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Affiliation(s)
| | | | | | | | | | - David Ji
- Analytical Laboratories in Anaheim, Inc
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20
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Liska D, Cook C, Szpylka J, Wang DD. Potatoes and Maillard Reaction Products (MRPs): The need for a benefit‐risk approach. FASEB J 2015. [DOI: 10.1096/fasebj.29.1_supplement.584.24] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- DeAnn Liska
- ResearchBiofortis Nutrition ResearchAddisonILUnited States
| | - Chad Cook
- ResearchBiofortis Nutrition ResearchAddisonILUnited States
| | - John Szpylka
- ChemistrySilliker, a Mérieux NutriSciences CompanyChicagoILUnited States
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21
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Plank DW, Szpylka J, Sapirstein H, Woollard D, Zapf CM, Lee V, Chen CYO, Liu RH, Tsao R, Düsterloh A, Baugh S. Determination of antioxidant activity in foods and beverages by reaction with 2,2'-diphenyl-1-picrylhydrazyl (DPPH): collaborative study First Action 2012.04. J AOAC Int 2013; 95:1562-9. [PMID: 23451369 DOI: 10.5740/jaoacint.cs2012_04] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.5] [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: 11/17/2022]
Abstract
A colorimetric method for the determination of total antioxidant activity in a variety of foods and beverages was validated in both a single-laboratory validation and a collaborative laboratory validation study. The procedure involved extraction of the antioxidants directly into a methanol-water solution containing a known amount of 2,2'-diphenyl-1-picrylhydrazyl (DPPH), thus promoting the rapid reaction of extracted materials with DPPH. The reaction was monitored by spectrophotometric measurement of the absorbance loss at 517 nm. Antioxidant activity was quantified relative to a dilution series of vitamin E analog standards (Trolox), which were analyzed in parallel simultaneously with the food and beverage samples. The antioxidant activities of the samples ranged from 131 to 131 000 micromole Trolox equivalents/100 g. Statistical analysis of the results showed that nine of the 11 matrixes gave acceptable HorRat values, indicating that the method performed well in these cases. The acceptable matrixes include pomegranate juice, blueberry juice, carrot juice, green tea, wine, rosemary spice, ready-to-eat cereal, and yogurt. Two samples failed the HorRat test: the first was an almond milk that had an antioxidant level below the practical LOQ for the method; the second was a sample of canola oil with added omega-3 fatty acid that was immiscible in the reaction medium.
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Affiliation(s)
- David W Plank
- Medallion Laboratories, 9000 Plymouth Ave North, Minneapolis, MN 55427, USA.
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22
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Abernethy G, Otter D, Arnold K, Austad J, Christiansen S, Ferreira I, Irvine F, Marsh C, Massom LR, Otter D, Pearce K, Stevens J, Szpylka J, Vyas P, Woollard D, Wu C. Determination of immunoglobulin G in bovine colostrum and milk powders, and in dietary supplements of bovine origin by protein G affinity liquid chromatography: collaborative study. J AOAC Int 2010; 93:622-627. [PMID: 20480910] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/29/2023]
Abstract
An AOAC collaborative study was conducted to evaluate an affinity LC procedure for measuring immunoglobulin G (IgG) in selected dairy powders. The powders were extracted with 0.15 M sodium chloride solution and the pH was adjusted to 4.6 to precipitate caseins, which would otherwise lead to an overestimation of IgG. The analyte was then bound to a commercially available Protein G affinity cartridge and selectively eluted with a glycine buffer at pH 2.5. Detection was at 280 nm and quantification was made against a calibration curve prepared from bovine serum IgG. The samples analyzed included the likely matrixes for which this assay will find commercial use, namely, high- and low-protein-content colostrum powders, tablets containing colostrum powder, and some IgG-containing dairy powders; milk protein isolate, whey protein concentrate, and skim milk powder. Eleven laboratories provided data for the study and assayed blind duplicates of six materials. The repeatability RSD values ranged from 2.1 to 4.2% and the reproducibility RSD values ranged from 6.4 to 18.5%. The Protein G method with casein removal has adequate reproducibility for measuring IgG in colostrum-derived powders that are traded on the basis of IgG content as a colostral marker.
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Affiliation(s)
- Grant Abernethy
- Fonterra Co-operative Group Ltd, Private Bag 11029, Palmerston North 4442, New Zealand.
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23
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Pan SJ, Sharpless K, Szpylka J, Gilani S, Woollard DC, Phillips JG, Williams SM, Abernathy G, Cardozo MSS, DeVries JW, McCleary B, O'Kane A, Rader JI, Thomsen AP, Rodriguez MGT. Committee on Food Nutrition. J AOAC Int 2010. [DOI: 10.1093/jaoac/93.1.30b] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022]
Affiliation(s)
- Shang-Jing Pan
- Abbott Nutrition International, 3300 Seltzer Rd, Columbus, OH 43219
| | - Katherine Sharpless
- National Institute of Standards and Technology, Analytical Chemistry Division, 100 Bureau Dr, Stop 8390, Gaithersburg, MD 20899-8390
| | - John Szpylka
- General Mills/Medallion Laboratories, 9000 Plymouth Ave N., Minneapolis, MN 55427
| | - Sarwar Gilani
- Health Canada, 251 Sir Frederick Banting Driveway, Ottawa, ON K1A 0L2, Canada
| | - David C Woollard
- New Zealand Laboratory Services Ltd, 35, O'Rorke Rd, Penrose, Auckland 1061, New Zealand
| | - John G Phillips
- U.S. Department of Agriculture, Agricultural Research Service, Eastern Regional Research Center, 600 E. Mermaid Ln, Wyndmoor, PA 19038-8551
| | - Sara M Williams
- Office of the Texas State Chemist, PO Box 3160, College Station, TX 77841-3160
| | - Grant Abernathy
- Fonterra Cooperative Group Ltd, Private Bag 11029, Dairy Farm Rd, Palmerston North 4442, New Zealand
| | | | - Jonathan W DeVries
- General Mills/Medallion Laboratories, 9000 Plymouth Ave N., Minneapolis, MN 55427
| | - Barry McCleary
- Megazyme International Ireland, Ltd, Bray Business Park, Southern Cross Rd, Bray City, Co. Wicklow, Ireland
| | - Anthony O'Kane
- Xenosense Ltd, Unit 18, The Innovation Centre, Northern Ireland Science Park, Belfast, BT3 9DT, United Kingdom
| | - Jeanne I Rader
- U.S. Food and Drug Administration, Center for Food Safety and Applied Nutrition, 5100 Paint Branch Pkwy, HFS 715, College Park, MD 20740-3835
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24
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Szpylka J, Pan SJ, Cardozo MSS, Patterson KY, Rader JI, Shoemaker DD, Rodriguez MGT, Woollard DC, Sharpless KE, Phillips JG, Williams SM, Phifer EC, Godshall MA, Blake CJ. Committee on Food Nutrition. J AOAC Int 2009. [DOI: 10.1093/jaoac/92.1.26b] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- John Szpylka
- General Mills/Medallion Laboratories, 9000 Plymouth Ave North, Minneapolis, MN 55427
| | - Shang-Jing Pan
- Abbott Nutrition International, 3300 Seltzer Rd, Columbus, OH 43219
| | | | - Kristine Y Patterson
- U.S. Department of Agriculture, Nutrient Data Laboratory, Bldg 005, Room 201, BARC-West, Beltsville, MD 20705
| | - Jeanne I Rader
- U.S. Food and Drug Administration, Center for Food Safety and Applied Nutrition, 5100 Paint Branch Pkwy, HFS 715, College Park, MD 20740-3835
| | - Dirk D Shoemaker
- Nebraska Department of Agriculture, 3703 South 14th St, Lincoln, NE 68502
| | | | - David C Woollard
- New Zealand Laboratory Services Ltd, 35 O'Rorke Rd, Penrose, Auckland 1061, New Zealand
| | - Katherine E Sharpless
- National Institute of Standards and Technology, Analytical Chemistry Division, 100 Bureau Dr, Stop 8390, Gaithersburg, MD 20899-8390
| | - John G Phillips
- U.S. Department of Agriculture, Agricultural Research Service, Eastern Regional Research Center, 600 E. Mermaid Ln, Wyndmoor, PA 19038-8551
| | - Sara M Williams
- Office of the Texas State Chemist, PO Box 3160, College Station, TX 77841-3160
| | - Edwin C Phifer
- U.S. Food and Drug Administration, Southeast Regional Laboratory, 60 8th St NE, Atlanta, GA 30309
| | - Mary A Godshall
- Sugar Processing Research, Inc., 1100 Robert E. Lee Blvd, New Orleans, LA 70124
| | - Christopher J Blake
- Nestec Ltd, Quality and Safety Assurance Department, Nestle Research Center, Ves-chez-les-Blanc, PO Box 44, Lausanne 26, 1000-CH, Switzerland
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25
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Sharpless KE, Szpylka J, Shoemaker DD, Gilani GS, Wolf WR, Rader J, Pan SJ, Torres M, Woollard DC, Phillips JG, Williams SM. Committee on Food Nutrition. J AOAC Int 2008. [DOI: 10.1093/jaoac/91.1.42b] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022]
Affiliation(s)
- Katherine E Sharpless
- National Institute of Standards and Technology, 100 Bureau Dr, Stop 8390, Gaithersburg, MD 20899-8390
| | - John Szpylka
- General Mills/Medallion Laboratories, 9000 Plymouth Ave N., Minneapolis, MN 55427
| | - Dirk D Shoemaker
- Nebraska Department of Agriculture, 3703 S. 14th St, Lincoln, NE 68502
| | - G Sarwar Gilani
- Health Canada Government of Canada, Nutrition Research Division, Banting Bldg 2203C, Health Products and Food, Tunney's Pasture, Ottawa, ON K1A-0L2, Canada
| | - Wayne R Wolf
- U.S. Department of Agriculture, Agricultural Research Service, Beltsville Human Nutrition Research Center, Food Composition Laboratory CORRECT AS SPELLED OUT?, B-161 R-102, BARC-East, Beltsville, MD 20705
| | - Jeanne Rader
- U.S. Food and Drug Administration (FDA), Center for Food Safety and Applied Nutrition, 5100 Paint Branch Pkwy, College Park, MD 20740
| | - Shang-Jing Pan
- Abbott Nutrition International, Micronutrient Department, Core Services, Research and Development Operations, 3300 Seltzer Rd, Columbus, OH
| | - Marina Torres
- Organization Technological Laboratory Uruguay (LATU), Avenida Italia 6201, Montevideo, Uruguay 11500
| | - David C Woollard
- New Zealand Laboratory Services Ltd, Analytical and Pharmaceutical Services, Penrose, Auckland, New Zealand
| | - John G Phillips
- U.S. Department of Agriculture, Agricultural Research Service, Eastern Regional Research Center, 600 E. Mermaid Ln, Wyndmoor, PA 19038-8551
| | - Sara M Williams
- Office of the Texas State Chemist, PO Box 3160, College Station, TX 77841-3160
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26
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Sharpless KE, Shoemaker DD, Gilani GS, Wolf WR, Szpylka J, Rader J, Pan SJ, Torres M, Woollard DC, Phillips JG, Williams SM. Committee on Food Nutrition. J AOAC Int 2007. [DOI: 10.1093/jaoac/90.1.57b] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Katherine E Sharpless
- National Institute of Standards and Technology (NIST), 100 Bureau Dr, Stop 8390, Gaithersburg, MD 20899-8390
| | - Dirk D Shoemaker
- Nebraska Department of Agriculture, 3703 S. 14th St, Lincoln, NE 68502
| | - G Sarwar Gilani
- Health Canada Government of Canada, Nutrition Research Division, Banting Bldg 2203C, Health Products and Food, Tunney's Pasture, Ottawa, ON K1A-0L2, Canada
| | - Wayne R Wolf
- U.S. Department of Agriculture, Agricultural Research Service, BHNRC FCL, B-161 R-102, BARC-East, Beltsville, MD 20705
| | - John Szpylka
- General Mills/Medallion Laboratories, 9000 Plymouth Ave North, Minneapolis, MN 55427
| | - Jeanne Rader
- U.S. Food and Drug Administration, Center for Food Safety and Applied Nutrition, 5100 Paint Branch Pkwy, College Park, MD 20740
| | - Shang-Jing Pan
- Abbott Laboratories, Ross Product Division, Vitamin Laboratory, Research Services, 3300 Seltzer Rd, Columbus, OH
| | - Marina Torres
- Technological Laboratory Uruguay (LATU), Avenida Italia 6201, Montevideo, Uruguay 11500
| | - David C Woollard
- New Zealand Laboratory Services Ltd, Analytical and Pharmaceutical Services, Penrose, Auckland, New Zealand
| | - John G Phillips
- U.S. Department of Agriculture, Agricultural Research Service, Eastern Regional Research Center, 600 E. Mermaid Ln, Wyndmoor, PA 19038-8551
| | - Sara M Williams
- Office of the Texas State Chemist, PO Box 3160, College Station, TX 77841-3160
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27
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DeVries JW, Rader JI, Keagy PM, Hudson CA, Angyal G, Arcot J, Castelli M, Doreanu N, Hudson C, Lawrence P, Martin J, Peace R, Rosner L, Strandler HS, Szpylka J, van den Berg H, Wo C, Wurz C. Microbiological assay-trienzyme procedure for total folates in cereals and cereal foods: collaborative study. J AOAC Int 2005; 88:5-15. [PMID: 15759720] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/02/2023]
Abstract
In 1996, U.S. Food and Drug Administration regulations mandated the fortification of enriched cereal-grain products with folic acid, thereby emphasizing the need for validated methods for total folates in foods, particularly cereal products. The AOAC Official Methods (944.12, 960.46) currently used for the analysis of folate in foods for compliance purposes are microbiological methods. When the fortification regulations were finalized, no Official AOAC or Approved AACC methods for folate in cereal-grain products were in place. The AOAC Official Method (992.05) for folic acid in infant formula does not incorporate important improvements in the extraction procedure and was not considered suitable for the analysis of folates in foods in general. A microbiological assay protocol using a trienzyme extraction procedure was prepared and submitted for comments to 40 laboratories with recognized experience in folate analysis. On the basis of comments, the method was revised to have the conjugase (gamma-glutamyl-carboxy-peptidase) treatment follow a protease treatment, to include the use of cryoprotected inoculum, and to include the spectroscopic standardization of the standard and optional use of microtiter plates. Thirteen laboratories participated in a collaborative study of 10 required and 10 optional cereal-grain products, including flour, bread, cookies, baking mixes, and ready-to-eat breakfast cereals. The majority of the participating laboratories performed the assay by the standard test tube method; others used the microtiter plate modification for endpoint quantitation with equal success. For the required products, the relative standard deviation between laboratories (RSD(R)) ranged from 7.4 to 21.6% for 8 fortified (or enriched) products compared with expected (Horwitz equation-based) values of 11-20%. RSD(R) values were higher (22.7-52.9%) for 2 unfortified cereal-grain products. For the optional products, the RSD(R) ranged from 1.8 to 11.2% for 8 fortified products. RSD(R) values were higher (27.9-28.7%) for 2 unfortified cereal-grain products. Based on the results of the collaborative study, the microbiological assay with trienzyme extraction is recommended for adoption as Official First Action.
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Affiliation(s)
- Jonathan W DeVries
- Medallion Laboratories, General Mills Inc., 9000 Plymouth Ave North, Minneapolis, MN 55427, USA.
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28
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Szpylka J, DeVries JW. Determination of beta-carotene in supplements and raw materials by reversed-phase high pressure liquid chromatography: collaborative study. J AOAC Int 2005; 88:1279-91. [PMID: 16385976 PMCID: PMC2657295] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/24/2023]
Abstract
Twelve laboratories representing 4 countries participated in an interlaboratory study conducted to determine all-trans-veta-carotene and total beta-carotene in dietary supplements and raw materials. Thirteen samples were sent as blind duplicates to the collaborators. Results obtained from 11 laboratories are reported. For products composed as softgels and tablets that were analyzed for total beta-carotene, the reproducibility relative standard deviation (RSDR) ranged from 3.35 to 23.09% and the HorRat values ranged from 1.06 to 3.72. For these products analyzed for trans beta-carotene, the reproducibility relative standard deviation (RSDR) ranged from 4.28 to 22.76% and the HorRat values ranged from 0.92 to 3.37. The RSDr and HorRat values in the analysis of a beadlet raw material were substantial and it is believed that the variability within the material itself introduced significant variation in subsampling. The method uses high pressure liquid chromatography (LC) in the reversed-phase mode with visible light absorbance for detection and quantitation. If high levels of alpha-carotenes are present, a second LC system is used for additional separation and quantitation of the carotene species. It is recommended that the method be adopted as an AOAC Official Method.
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Affiliation(s)
- John Szpylka
- Medallion Laboratories Division of General Mills, 9000 Plymouth Ave N, Minneapolis, MN 55427-3870, USA.
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29
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Layloff TP, Barbano D, Bell J, Brodsky M, Braselton WE, Foster K, Indyk H, Kalra Y, Klesta G, Leroux P, MacLean D, Narizano A, Pellaers P, Szpylka J, Thompson E. Membership Committee. J AOAC Int 1999. [DOI: 10.1093/jaoac/82.2.555a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022]
Affiliation(s)
- Thomas P Layloff
- U.S. Food and Drug Administration, Division of Drug Analysis, 1114 Market St, Room 1002, St. Louis, MO 63101, USA
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30
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Sheree Lin CC, Cottingham B, Johnson R, Mookherjea S, Smittle R, Angelinin N, Walsh M, Wolf W, MacLean D, Dave Wong WK, Rajan J, Ho IP, Kowalski V, Gallagher K, DeVries J, Szpylka J. Laboratory Quality Assurance Committee. J AOAC Int 1999. [DOI: 10.1093/jaoac/82.2.554a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Affiliation(s)
- C C Sheree Lin
- Tyson Foods, Inc., 3609 Johnson Rd, Springdale, AR 72762, USA
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31
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Affiliation(s)
- Hong Ren
- Department of Chemistry, The Ohio State University, 120 West 18th Avenue, Columbus, Ohio 43210-1173
| | - John Szpylka
- Department of Chemistry, The Ohio State University, 120 West 18th Avenue, Columbus, Ohio 43210-1173
| | - Larry B. Anderson
- Department of Chemistry, The Ohio State University, 120 West 18th Avenue, Columbus, Ohio 43210-1173
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