Zobrazeno 1 - 10
of 13
pro vyhledávání: '"D H, Kleyn"'
Publikováno v:
Journal of AOAC INTERNATIONAL. 84:1499-1508
The Gerber method is used worldwide as a simple and rapid method for determining fat in raw and processed milks. However, the volume of the test portion used in the method has not been internationally agreed upon. A collaborative study was conducted
Publikováno v:
Journal of Agricultural and Food Chemistry. 44:54-58
Gelation of casein may be improved by introduction of functional groups that are capable of forming disulfide bonds. Thiolated whole caseins were prepared with S-acetylmercaptosuccinic anhydride and succinylated whole caseins with succinic anhydride.
Publikováno v:
Journal of Agricultural and Food Chemistry. 41:30-36
Publikováno v:
Journal of AOAC International. 84(5)
The Gerber method is used worldwide as a simple and rapid method for determining fat in raw and processed milks. However, the volume of the test portion used in the method has not been internationally agreed upon. A collaborative study was conducted
Publikováno v:
Journal of AOAC INTERNATIONAL. 51:802-807
A new method in which phenolphthalein monophosphate is used as substrate has been developed for determining residual alkaline phosphatase: Upon hydrolysis, phenolphthalein is released and yields a red solution that is compared visually with a standar
Publikováno v:
Journal of AOAC INTERNATIONAL. 54:857-859
A procedure for determining alkaline phosphatase activity in milk and chocolate milk, based upon the dialysis of phenolphthalein monophosphate and subsequent measurement of absorbance of the dialysate at 550 nm, has been refined. The modified procedu
Autor:
A M, Essig, D H, Kleyn
Publikováno v:
Journal - Association of Official Analytical Chemists. 66(6)
A new enzymatic method based on the spectrophotometric measurement of reduced NAD+ (beta-nicotinamide-adenine dinucleotide) at 340 nm has been evaluated by comparing it with the AOAC copper reduction method. Ten samples of milk containing various lev
Autor:
D H, Kleyn, J, Jakubowski
Publikováno v:
Journal - Association of Official Analytical Chemists. 57(3)
Autor:
D H, Kleyn, S T, Goodman
Publikováno v:
Journal - Association of Official Analytical Chemists. 60(6)
A visual screening method specifying phenolphthalein monophosphate as the substrate was applied to cheese by analyzing the extract obtained with 7.5% butanol. In the extraction step, all of the alcohol was added at one time, and the mixture was filte
Autor:
D H, Kleyn
Publikováno v:
Journal - Association of Official Analytical Chemists. 61(5)
The method developed for developed for determining alkaline phosphatase activity in cheese, in which phenolphthalein monophosphate is used as the substrate, was collaboratively studied. A 7.5% butanol extract of cheese is reacted with phenolphthalein