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The concentration of pomegranate juice and the corresponding effect of membrane wetting was studied through the non-thermal Osmotic Distillation technique using flat sheet PVDF and PTFE membranes. Analytical techniques like contact angle analysis, FTIR, SEM, AFM and pore geometry analysis revealed that the PVDF membrane was much prone to wetting as compared to PTFE membrane. In a total operational time of 24 h, the water flux and juice concentration attained values of 0.208 kg m⁻² hr⁻¹ and 18 ^oBrix, respectively in PVDF membrane and 0.935 kg m⁻² hr⁻¹ and 41 ^oBrix, respectively in PTFE membrane. After 24 h of continuous operation, the hydrophobicity declined by 29% in PVDF membrane as opposed to 6% in PTFE membrane, which was a clear sign of membrane wetting in the former case. Similarly, the normalized flux decline was 83% in PVDF membrane which was much higher as …