“…Oven temperature programme started at 70 °C held for 4 min, then increased to 175 °C at a rate of 13 °C · min −1 and was held for 27 min, then increased to 215 °C at a rate of 4 °C · min −1 and was held for 31 min. Hydrogen was used as carrier gas with flux of 40 cm · s −1 as previously described by Barletta et al (2016). During the process of FA identification, four standards were used: standard C4-C24 FAs (Supelco ® TM 37, Bellefonte, PA, USA), vaccenic acid C18:1 trans-11 (V038-1G; Sigma-Aldrich, St. Louis, MO, USA), CLA C18:2 trans-10, cis-12 (UC-61M 100MG, NU-CHEK-PREP ® , Elysian, MN, USA) and CLA C18:2 cis-9, trans-11 (UC-60M 100MG NU-CHEK-PREP ® , Elysian, MN, USA).…”