[Studies on growing pigs to determine the true digestibility of variously prepared potatoes. 2. Technically dried...

There are two kinds of damage to potato proteins that may arise in the process of beat drying. Decreases in the gross lysine content are accompanied by a still much more pronounced depression of digestibility. If, for example, the gross lysine content of dried potatoes was only 50% of that of steamed potatoes then the average value for the true lysine digestibility was 15%; in some cases the content of truly digestible lysine was 0% when compared to that of steamed potatoes. Similarly, it was found that some types of dried potatoes with a dry matter content of about 88% had already lost about 43% of the truly digestible lysine contained in steamed potatoes.