shows the texture index defined in Eq. (5). The texture index of PEF + O-treated tissue F* was even higher than that of the fresh untreated (U) apple (F*≈1.3) and was noticeably higher than texture indices of OH + O-treated or O-treated samples. Enhancement of the texture of PEF + O-treated tissue can reflect deep penetration of aqueous glycerol solution inside the apple tissue,which is in accordancewith data obtained for PEF-treated sample subjected to supplementary osmotic treatment (Figs. 4, 6).