[Comparative study of the absorption of enzymatic protein hydrolysates in the small intestine of the XXXX . 2. The absorption of tryptic, thermitatic and tryptic-thermitatic casein hydrolysates compared with the equimolar composition of free @entity1522 ].

@entity1522 @entity1568 @entity535 @entity1853 @entity55100 @entity367 @entity35 @entity493
Tryptic, thermitatic, and tryptic-thermitatic casein hydrolyzates as well as their equimolar @entity535 mixture were perfused through proximal and distal parts of the intestine (10 cm length) of nonanaesthesized @entity35 . The total @entity535 concentration of the perfused solution was 50 mM. The absorption of @entity1568 and total @entity1522 respectively did not reveal significant absorption advantages in favour of the hydrolyzates. In contrast to this, some peptidic bound @entity1522 of these hydrolyzates show a significantly better absorption as compared to free @entity1522 . At this, dependences of the kind of hydrolyzate and the part of the intestine are evident. @entity367 , e.g. is generally more rapidly absorbed when peptidic bound; @entity1853 is more rapidly absorbed only from the thermitatic and tryptic-thermitatic hydrolyzates, and @entity493 and @entity55100 only in the distal part of the intestine. Independent of the @entity535 or peptide substrate the total absorption of all the @entity1522 is higher in the distal part of the intestine. The comparison concerning the ranking order of the single @entity535 absorption rates shows in the two parts of the intestine distinct differences between the @entity535 mixtures and the enzymatic hydrolyzates. The lowest differences were found between the thermitatic and the tryptic-thermitatic hydrolyzate. Both of them have approximately the same degrees of hydrolysis (30 and 35%, respectively). The variability of the @entity535 absorption from the three casein hydrolyzates is lower in comparison with the @entity535 mixture. The tryptic-thermitatic hydrolyzates have the lowest coefficients of variability.
