Publications by authors named "Usama D Souka"

The amino acid sequence dictates protein folding and spatial structure, essential for understanding their behavior. Gelatin, important in industry and biomedicine, demands accurate source authentication due to ethical and dietary concerns. This study explores differentiating and quantifying bovine and pork gelatin using UPLC-QTOF and ATR-FTIR spectroscopy.

View Article and Find Full Text PDF

Lactoferrin is a multifunctional protein that has various biological activities and applications. However, different sources of lactoferrin may have different properties and characteristics. In this study, we hypothesized that ultra-performance liquid chromatography quadrupole time-of-flight mass spectroscopy (UPLC-QTOF-IMS) coupled with UNIFI software can differentiate bovine lactoferrin from camel lactoferrin based on the unique peptides produced by trypsin digestion.

View Article and Find Full Text PDF

Date palm fruit seed ( L.) extract (DSE), an under-utilized resource, is a rich source of polyphenols with high potency for disease prevention and antioxidative activities. For the first time, the present study demonstrated that DSE inhibits labile iron activity and DNA and BSA damage and inhibits acetylcholinesterase and tyrosinase activities.

View Article and Find Full Text PDF

This study was conducted to evaluate the quality of 11 honeys from arid regions for first time, and compare it with 5 different honeys from non-arid regions. Mean values obtained for physicochemical parameters were: pH 4.76 ± 0.

View Article and Find Full Text PDF
Article Synopsis
  • Honey is a rich source of natural antioxidants, lowering disease risks and highlighting its health benefits.
  • The study compared honeys from arid and non-arid regions, focusing on their polyphenolic content and antioxidant capacities.
  • Results indicated that some arid-region honeys had superior levels of phenolic compounds and stronger DNA damage inhibition compared to those from non-arid areas.
View Article and Find Full Text PDF