Impact of zinc salts on heat-induced aggregation of natural actomyosin from yellow stripe trevally

► Aggregation of NAM was governed by heat, type and concentration of zinc salts. ► ZnSO4 induced aggregation of NAM more effectively than ZnCl2. ► Salt bridge, mediated by Zn2+, played a role in the aggregation of NAM. ► ZnSO4 can serve as promising additive to strengthen surimi gel.