Effect of Goji Berries (Lycium Barbarum) Extract and Some Nanoparticles Loaded on Gelatin Film in Chemical Properties of Labneh

Abstract

This study is conducted to evaluate the effect of Lycium barbarum extract (Goji berries), Chitosan nanoparticle (ChNPs), titanium dioxide nanoparticle (TiO2 NPs) loaded on Gelatin films in terms of the chemical composition of labneh during different storage periods. The samples were divided into seven treatment procedures, include (T1) non-coated labneh, (T2) labneh coated with Gelatin membranes, (T3) labneh coated with Gelatin membranes and Lycium barbarum extract, (T4) labneh coated with Gelatin films and ChNPs, (T5) labneh coated with Gelatin films treated TiO2 NPs, (T6) Labneh coated with Gelatin films, Lycium barbarum, ChNPs, (T7) Labneh coated with Gelatin films, Lycium barbarum, TiO2 NPs. The results showed that the moisture percentage decreased significantly (p <0.05) untilthe end of the storage period, and treatment T6 was less in the rate of moisture loss (72.35%). It was also found that the ratios of protein, fat, ash, did not show significant differences at the time of one day compared with the two control samples T1 and T2, These percentages increased gradually as the duration of preservation was prolonged and reached their highest values at the time of 14 days. The pH values decreased significantly between (4.36-4.32) at the end of the storage period, compared with the two control samples T1 and T2, which were at 4.16 and 4.23, respectively. It was found that the fatty acid values of all treatments were significantly low compared with the control treatment T1 at the time of one dayThe free fatty acid ratios increased and reached their highest values between (0.29 - 0.32) for all treatments compared with the two control treatments T1 and T2 at the end of the storage period which amounted to (0.39 and 0.35) %.