“Antioxidant Profiling of Yemeni Varieties of Opuntia Ficus-Indica Pulp: Method Optimization, Validation, and Regional Evaluation”. Sana’a University Journal of Applied Sciences and Technology, vol. 4, no. 9, Sept. 2026, pp. 2464-7, https://doi.org/10.59628/jast.v4i9.3123.