Study on the nutrition value of herbage protein tofu

In order to provide further scientific basis for the transformation of the new technology for herbage protein tofu making, 3 kinds of alfalfa protein tofu and 3 kinds of white clover protein tofu were used to test the contents of dry matter, crude protein, lipid, total sugar, insoluble dietary fiber, total ash, calcium and carotenoid, and further, the amino acids contents of protein were determined as well. With the ordinary tofu as control, nutrition values of 6 kinds of herbage protein tofu were evaluated. The results showed that the crude protein and total sugar contents of 6 kinds of herbage protein tofu were similar to the control. The herbage protein tofu was lower in lipid contents and richer in insoluble dietary fiber, calcium and carotenoid contents. The total amino acids contents and the amino acid scores of herbage protein tofu were obviously higher than ordinary tofu. Lysine was the only restrictive amino acid for 4 kinds of herbage protein tofu. Lysine and sulfur amino acid were the restrictive amino acid for the rest of 2 kinds of herbage protein tofu. The herbage protein tofu was more balanced than ordinary tofu in their essential amino acid compositions, in which, the white clover tofu was the best.