Development of functional yogurt fortified with microencapsulated Vitex agnus-castus L. Fruit extract: in vitro bioactivity-guided and in silico-validated approach
2025
Hanaa A. El-Hamshary | Lamiaa I. El-Nawasany | Osama Magouz | Amr Farouk | Sameh Awad | Ebtihal Khojah | Ahmed A. Zaky | Tamer M. El-Messery | Dina A. Amer
The present study aimed to develop a functional yogurt enriched with microencapsulated hydroethanolic extract of Vitex agnus-castus L. fruit. The extract showed potent antioxidant activity (85.98 % DPPH scavenging at 0.5 mg/mL; FRAP absorbance of 0.51 at 700 nm) and selective cytotoxicity against human prostate cancer (PC3), human epidermoid carcinoma (A431), human Caucasian breast adenocarcinoma (MCF7), and human hepatocellular carcinoma (HepG2) cells (IC₅₀: 38.27–80.97 µg/mL), with minimal impact on normal BJ1 fibroblasts. High-performance liquid chromatography with diode array detection (HPLC-DAD) analysis revealed catechin, quercetin, gallic acid, and chlorogenic acid as major phenolics. In silico molecular docking supported the observed bioactivity by illustrating interactions of key phytochemicals with cancer-related targets. To enhance stability and bioavailability, V. agnus-castus extract was encapsulated via complex coacervation using gum Arabic and whey protein. The resulting microcapsules demonstrated favorable encapsulation efficiency, physicochemical characteristics, and resistance to simulated gastrointestinal conditions. Incorporation into yogurt enhanced its nutritional value, texture, and sensory attributes. Overall, V. agnus-castus extract-loaded microcapsules show promise as functional food additives with antioxidant and anticancer potential.
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