Determination of vitamin B12 in milk products and selected foods by optical biosensor protein-binding assay: method comparisonHarvey E Indyk
NZMP Fonterra, Waitoa, New Zealand
J AOAC Int 85:72-81. 2002
..The influence of season was studied in herd milk, early lactation was followed for a single animal, and the cobalamin content of bovine, caprine, and ovine milks was compared...
- Analysis of bovine immunoglobulin G in milk, colostrum and dietary supplements: a review
Leyton W Gapper
Fonterra Research Centre, Dairy Farm Road, Private Bag 11029, Palmerston North, New Zealand
Anal Bioanal Chem 389:93-109. 2007
..The review also discusses nutraceutical applications, regulatory issues, stability of IgG and the significance of primary reference material in IgG analysis...
- Committee on food nutrition. Nonvitamin micronutrients
Harvey Indyk
NZMP, No. I Main Rd, Waitoa, New Zealand
J AOAC Int 86:143-5. 2003
- Determination of immunoglobulin G in bovine colostrum and milk by direct biosensor SPR-immunoassay
Harvey E Indyk
NZMP Fonterra, PO Box 7, Waitoa, New Zealand
J AOAC Int 86:386-93. 2003
..The technique was applied to the measurement of IgG content during early lactation transition from colostrum to milk, as well as in consumer milk, colostrum, and hyperimmune milk powders...
- Determination of folate in infant formula and adult/pediatric nutritional formula by optical biosensor assay: First Action 2011.05
Harvey Indyk
Fonterra Co operative Group Ltd, Waitoa, New Zealand
J AOAC Int 95:298-300. 2012
..1 ng/mL (equivalent to 2.5 microg/100 g for a typical infant formula). The method detection limit was 6.5 microg/100 g with a repeatability of 3.48% and an intermediate reproducibility of 4.63% RSD...
- Nonvitamin micronutrients
Harvey Indyk
Fonterra, No 1 Rd, PO Box 7, Waitoa, New Zealand
J AOAC Int 89:288-9. 2006
..Whether such studies need either to be repeated in full using OMA protocol, or perhaps, preferably, publish the method within OMA at a lower level of validation, requires clarification at the Official Methods Board level...
- Determination of pantothenic acid in foods by optical biosensor immunoassay
Simon A Haughey
Xenosense Ltd, Unit 18, The Innovation Centre, Northern Ireland Science Park, Queen s Rd, Queen s Island, Belfast, N Ireland, BT3 9DT
J AOAC Int 88:1008-14. 2005
..The results indicate that the biosensor technique is appropriate for the estimation of pantothenic acid in a wide range of foodstuffs...
- Determination of nucleotides and nucleosides in milks and pediatric formulas: a review
Brendon D Gill
Fonterra Co operative Group Ltd, P O Box 7, Waitoa, New Zealand
J AOAC Int 90:1354-64. 2007
..This review summarizes the analytical techniques used to date in the analysis of nucleospecies in bovine and human milks and infant formulas...
- Affinity liquid chromatography method for the quantification of immunoglobulin G in bovine colostrum powders
David E J Copestake
Fonterra-Palmerston North, Dairy Farm Rd, Private Bag 11029, Palmerston North, New Zealand
J AOAC Int 89:1249-56. 2006
..The method was rapid, and performance parameters included a working range of 10-150 microg IgG and precision relative standard deviation values of <10%...
- Determination of minor proteins of bovine milk and colostrum by optical biosensor analysis
Harvey E Indyk
Fonterra, PO Box 7, Waitoa, New Zealand
J AOAC Int 89:898-902. 2006
..The technique has been applied to the measurement of these proteins in consumer milks, colostrum, milk products, and infant formulas, and their temporal change during early bovine lactation followed...
- Direct optical biosensor analysis of folate-binding protein in milk
Harvey E Indyk
Fonterra, PO Box 7, Waitoa, New Zealand, and Biacore International Limited, Box Hill, Melbourne, Victoria 3128, Australia
J Agric Food Chem 52:3253-8. 2004
..The technique was applied to the measurement of active FBP content of consumer milks, the heat classification of skim milk powders manufactured under a wide range of thermal processing protocols, and change during early bovine lactation...
- Determination of orotic acid, uric acid, and creatinine in milk by liquid chromatography
Harvey E Indyk
Fonterra, No 1 Rd, PO Box 7, Waitoa, New Zealand
J AOAC Int 87:116-22. 2004
..In contrast to urate and creatinine, expression of orotic acid in bovine milk was strongly dependent on stage of early lactation. The co-existence in mammalian milks of related nucleoside and nucleotide components was also determined...
- Rapid determination of thiamine, riboflavin, pyridoxine, and niacinamide in infant formulas by liquid chromatography
David C Woollard
AgriQuality NZ Ltd, Auckland, New Zealand
J AOAC Int 85:945-51. 2002
..UV detection is used for niacinamide, and programmed fluorescence detection is used for riboflavin and the B6 vitamins. Thiamine is routinely determined sequentially under modified elution conditions...
- Determination of total vitamin C in fruit juices and related products by liquid chromatography: interlaboratory study
Allan R Brause
Analytical Chemical Services of Columbia Inc, 9110 Red Branch Rd, Columbia, MD 21045, USA
J AOAC Int 86:367-74. 2003
..82-4.04. The LC method is suitable for routine use in fruit products and foods containing > 5 mg/100 g vitamin C and is recommended for further validation by AOAC INTERNATIONAL and International Fruit Juice Union...
