The Journal of biological chemistry . A o^ Who\eWater,- ^VAWV. 130-2 72 l£e-E70 128-2681 ^ ^^ 10 le 14 16 14 aa 3o se 46 54 Time in Minutes Fig. 1, A. Heat penetration curves of skim and whole milks whichcoagulated before the temperature of the oil bath was reached. Fig. 1, B. Heat penetration curves of skim and whole milks which coagu-lated after the temperature of the oil bath was reached. Now, to return to the heat absorption phenomenon. Theendothermic nature of the coagulation reaction may be demon-strated in one of two ways. For the time being we are consider-ing only skim milk. We may ch


The Journal of biological chemistry . A o^ Who\eWater,- ^VAWV. 130-2 72 l£e-E70 128-2681 ^ ^^ 10 le 14 16 14 aa 3o se 46 54 Time in Minutes Fig. 1, A. Heat penetration curves of skim and whole milks whichcoagulated before the temperature of the oil bath was reached. Fig. 1, B. Heat penetration curves of skim and whole milks which coagu-lated after the temperature of the oil bath was reached. Now, to return to the heat absorption phenomenon. Theendothermic nature of the coagulation reaction may be demon-strated in one of two ways. For the time being we are consider-ing only skim milk. We may choose a temperature in the oilbath sufficiently high so that, if the autoclave containing milkbe immersed in it, the milk will coagulate before the temperatureof the bath is reached. If we measure the temperature withinthe autoclave periodically, let us say every minute, we may plotthe data on a curve sheet, plotting time and temperature. The A. Leighton and C. S. Mudge 59 upper part of such a curve is given in Fig. 1, A. It will be


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Keywords: ., bookcentury1900, bookdecade1900, booksubjectbiochem, bookyear1905