Question

Heat-treated legume seed proteins are more digestible than those of untreated legume seed proteins
due to
(A) reaction of reducing sugars with-amino group of lysine
(B) increased binding of lectins to intestinal mucosal cells
(C) thermolabile nature of lectins and Kunitz-type protease inhibitors
(D) thermolabile nature of Bowman-Birk type of inhibitor

Answer 1

Heat-treated legume seed proteins are more digestible than those of untreated legume seed proteins

• (A) reaction of reducing sugars with-amino group of lysine

Answer 2

The correct answer is option C).   thaermolabile nature of lectins and Kunitz type protease inhibitors.

Thermolabile refers a substance that undergoes change in its structure due to heat.

Kunitz STI protease inhibitor is a type of protein, which is present in legume seeds and acts as protease inhibitor, which protects the plant against consumption by animals, and hence reduces digestibility by up to 75 percent.

These inhibitors are inactivated by use of heating, freezing or addition of sulphites.