Zobrazeno 1 - 10
of 58
pro vyhledávání: '"R.McL. Whitney"'
Publikováno v:
Journal of Food Science. 47:110-113
A thermodynamic approach was based on sorption data over a wide range of water activity (aw) at each of three temperatures. The hypothesis tested was the total partial enthalpy change for the water of a mixture is equal to the sum of the partial enth
Autor:
T.-M. Wei, R.McL. Whitney
Publikováno v:
Journal of Dairy Science. 68:1630-1636
To obtain gram amounts of the various casein fractions, whole casein dispersed in 3.3 M urea (pH 7.4) containing 77 mg/L dithiothreitol was fractionated at 5°C by ion-exchange adsorption on diethylaminoethyl cellulose, Whatman DE 52, with stepwise s
Autor:
H.O. Jaynes, R.McL. Whitney
Publikováno v:
Journal of Dairy Science. 65:1074-1083
A theory for exchange of calcium between milk or model milk-protein system and an appropriately buffered weak cation-exchange resin was developed which could be used for determination of protein-bound or colloidal calcium. With suitable preconditioni
Publikováno v:
Journal of Dairy Science. 39:536-541
Autor:
R.McL. Whitney, P.H. Tracy
Publikováno v:
Journal of Dairy Science. 33:50-59
Summary In this study of the stale flavor which develops in dried whole milk on storage, it was necessary to develop a more efficient method for obtaining stale butter oil from the dried whole milk. An investigation of various Soxhlet-type extraction
Publikováno v:
Journal of Dairy Science. 49:169-172
The flavor stability of evaporated milk made by the conventional, high-temperature short-time, and aseptic processes was determined on storage at 10 and 27C. There was a significant effect of processing on the initial flavor score and on the effect o
Publikováno v:
Journal of Dairy Science. 50:1723-1737
Xanthine-oxidase activity of milk as determined by the catalytic reduction of triphenyl tetrazolium chloride with xanthine as substrate demonstrated that milk contains activators and inhibitors of this enzyme. Heating milk to 91.4 C for 4.2 sec was s
Publikováno v:
Journal of Dairy Science. 35:937-948
Summary A test of the heat stability of milk proteins has been described which is suitable for research purposes. The necessary control of the different variables in the test has been evaluated and the reproducibility of the test established. The pos
Autor:
R.McL. Whitney, H.A. Ntailianas
Publikováno v:
Journal of Dairy Science. 46:1335-1341
A method was developed to determine the total calcium and magnesium in diluted milk by direct titration with ethylenediamine tetraacetate (EDTA). The method yields complete recovery of the added calcium (99.86-100.02%) and values for total calcium an
Publikováno v:
Journal of Dairy Science. 33:281-287
Summary The possibility of separating the stale-flavor component from stale butter oil by steam distillation was investigated. A procedure was developed by which a fraction was separated from the stale butter oil. This fraction, when dissolved in fre