The protein quality of pidan was evaluated by determining the net protein utilization (NPU) with the weanling rat, and compared with fresh duck egg and hen egg in four experiments.

• 本实验以蛋白质净利用率(NPU)来测定皮蛋之蛋白质营养价值，并与新鲜之鸭蛋和鸡蛋比较。