Determination of volatile profile of citrus fruit by HS-SPME/GC-MS with oxidized NiTi fibers using two temperatures in the same extraction procedure

► Use of a robust SPME fiber obtained by the oxidation of NiTi rods with H2O2 solution. ► new SPME procedure that involves the use of two extraction temperatures in a single procedure. ► Determination of the volatile profile in citrus fruits.