McDonald's China says its burgers are made of 100 percent beef after the fast food chain announced it will drop use of "pink slime", made from spare beef trimmings, cnr.cn reported Friday.

Ingredients for McDonald's burgers in the Chinese mainland are different from that in the US, and are free from "pink slime", said a unnamed staff in charge of McDonald's China's public relation department.

She told cnr.cn that McDonald's production process is in line with and above China's national standards. There are no additives to the beef during the process except for pepper and salt when it is cooked in the restaurants, she said.

McDonald's USA said it was discontinuing the use of "pink slime" in burger recipe, according to US media reports.