Impact of milk source on Qula quality – a comparative study of yak and cattle yak Qula - Qianyu Wang; Weinan Zhang; Shuqin Chen; Xiaojing Tian; Xuejie He; Jia Wei; Yumei Wei; Fumei Zhang; Tisong Liang; Li Song; Zilin Qiao; Xiaoyan Chen (International Journal of Gastronomy and Food Science, 2026)