Development and characterization of gelatin peptides and peptide‑calcium chelates from tuna processing by-products of skins and bones - Jing Xue; Feijia Xu; Weibo Lu; Lihong Yang; Jingjing Liang; Peiqing Mao; Lixiang Chen; Hongguo Yang; Kang Chen; Zejun Wang; Qing Shen (Food Chemistry, 2025)