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Gelatin titration curves

There are, of course, many studies of the composition of gelatins derived from mammalian sources and from fish skins. In Table III the relatively recently available results on the whole collagens have been cited. Mammalian collagen is represented largely by the analyses summarized by Bowes and Kenten (40), performed on a preparation of ox hide. The data account for nearly 100% of the total substance and have been found in reasonable agreement with acid-base titration curves. This set of values may be used to define a standard collagen with which other substances may be compared. [Pg.93]

The preferred titrant used by many people in recent years has been tetrabutylammonium hydroxide, also in benzene—methanol. This titrant has two major advantages over sodium and potassium salts. The first is that the products of titration are always soluble. With sodium and potassium you frequently get very gelatinous precipitates that are very disturbing. The second advantage of this titrant is that you can get excellent potentiometric curves using the glass electrode. With sodium and potassium tit-rants, the titration curves frequently do not tell the whole story. For example, you might get a titration curve with a very small break and yet when you add an indicator, the end point is extremely sharp. With tetrabutylammonium hydroxide you do not have this difficulty. [Pg.88]

The implementation approach used for peptones is applied to the gelatin in order that it be defined as a constituent in the database of the thermodynamic software. For the estimation of pKa, the calculation is achieved from the titration curve of gelatin at 50 g/kg of water. Table 3.6 gives the main characteristics of the fictional molecule. [Pg.46]

Figure 3.8 shows the titration curves of gelatin solutions at different concentrations. The deviations are on average lower than 0.15 upH and reach at most 0.4 upH. [Pg.46]

Fig. 61.—Curves of the viscosimetric titration of the gelatin-D-glucan systems 1, (1 1), 2, (2 1) 3, (3 1). (By permission from Tolstoguzov et al.984)... Fig. 61.—Curves of the viscosimetric titration of the gelatin-D-glucan systems 1, (1 1), 2, (2 1) 3, (3 1). (By permission from Tolstoguzov et al.984)...
Figure 3.8. Comparison of the experimental and predicted titration gelatin curves at different concentrations. The points correspond to the experimental measurements and the lines correspond to the predictions of the model... Figure 3.8. Comparison of the experimental and predicted titration gelatin curves at different concentrations. The points correspond to the experimental measurements and the lines correspond to the predictions of the model...

See other pages where Gelatin titration curves is mentioned: [Pg.113]    [Pg.188]    [Pg.90]    [Pg.109]    [Pg.114]    [Pg.137]    [Pg.141]    [Pg.180]    [Pg.171]    [Pg.209]    [Pg.44]    [Pg.197]    [Pg.49]    [Pg.629]    [Pg.170]    [Pg.865]   
See also in sourсe #XX -- [ Pg.7 , Pg.274 , Pg.275 , Pg.276 , Pg.277 , Pg.278 ]

See also in sourсe #XX -- [ Pg.154 ]




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