This study investigated the polyphenolic composition and antioxidant potential of Medjool date tissues (flesh and seeds) from two plantations in the Jordan Valley, using chromatographic (HPLC/DAD) and spectrophotometric methods (Folin-Ciocalteau and DPPH assays). Significant levels of phenolic compounds, including gallic acid, ferulic acid, tannins, and flavonoids, were identified. The analysis revealed that polyphenol concentrations in date pulp varied depending on plantation practices and environmental conditions. Additionally, date seed extracts exhibited substantially higher antiradical efficiency compared to flesh extracts. These findings highlight the excellent nutritional and health-promoting properties of Medjool dates. Furthermore, the research emphasizes the potential of date seeds and downgraded fruits for applications in nutraceuticals and functional foods, supporting sustainability and circular economy principles. The study underscores the significance of Medjool dates as a premium cultivar for health-oriented products and suggests strategies to enhance Palestinian date exports despite ongoing logistical and geopolitical challenges.

The homeopathic tincture of Taxus baccata L. is monographed in the current German Homeopathic Pharmacopoeia (HAB 2009). However, the described identification test is a common comparative TLC procedure that might be updated. The purpose of the current work was the quali-quantitative analysis by HPLC/DAD/MS of Taxus tincture. In this study we characterized polyphenolic compounds, in particular four hydroxycinnamic derivatives (0.85 mg/mL) and four flavonoids (quercetin and kaempferol 3-O-rutinoside and xylosyl glucosides); the total polyphenol content was 1.265 mg/mL of tincture. Starting from the official German Homeopathic Pharmacopoeia method of preparation, the aim of this work was to optimize a rapid and reproducible method for the analysis of herbal drugs and tincture, directly prepared in store or the herbalist's shop, to ensure safety and efficacy of the preparation. The procedure has to ensure validation, robustness of the results, and provide a quick response about the composition of compounds in the herbal drug preparation.