An experimental study has been made of the adsorption of purified egg albumin, from aqueous solution, on collodion membranes. At protein concentrations of 4 to 7 per cent apparent saturation values were obtained which resembled closely the results obtained with gelatin, showing a maximum at pH 5.0 and lower values on either side of this region. Over large ranges of protein concentration, howeve...

Evidence is brought forward to show that at concentrations of urea high enough to split the egg albumin molecule the solubility changes produced by urea are profoundly modified. The degree of precipitation after dialysis is the net result of two changes produced by the urea: the first, normally spoken of as denaturation, which makes the protein insoluble in dilute solution and the second, a spl...

1. Most of the products of the peptic hydrolysis of albumin, about 85 per cent of the total N, are primary in the sense that they arise directly from the protein molecule, and undergo no further hydrolysis. 2. A slow secondary hydrolysis, involving about 15 per cent of the total N, occurs in the proteose and simpler fractions primarily split off. 3. Acid metaprotein in peptic hydrolysis arises ...

Introduction. A description is given of the principle followed in the experimental determination of the ionisation of egg albumin, its capacity to combine with acids and bases. Egg albumin is regarded as an ampholyte, and in accordance with J. N. Brønsted's definition of acids and bases, ampholytes are considered as substances capable of both taking up and giving off hydrogen ions. The theoreti...

The coagulation of isoelectric egg albumin solutions, on exposure to ultraviolet radiation, involves three distinct processes, (1) the light denaturation of the albumin molecule, (2) a reaction between the light denatured molecule and water which may be similar to heat denaturation but occurs at a lower temperature, and (3), the flocculation of the denatured molecules to form a coagulum. The li...

Medicine, U C L A Center for the Health Sciences, Los Angeles, California 90024 trioleate (266 mCi/mmole), Amersham/Searle, Arlington Heights, Ill. ; bovine albumin, fatty acid-poor, Miles Research Products, Kankakee, 111. ; Triton X-100, Rohm and Haas, Philadelphia, Pa. ; and egg lecithin, Schwarz/Mann, Orangeburg, N.Y. The egg lecithin was purified by a water wash of a chloroform-methanol 2 :...

Summary Batter stabilisation presents a great challenge for gluten‐free (GF) bread, as CO 2 is released during bread‐making process, resulting in small, dense and crumbly breads. Apart from starch, protein plays crucial role gas cell stabilisation. This study aims to assess the effect of non‐gluten different sources (plant animal) on GF batter's rheological behaviour (pasting properties, rheolo...