Monir, Ashraq, Nidhal Mohammad, and Akram Thabet. 2014. “Study of O Catechins As Antioxidant Extract from Black, White Shada Seeds and Waste of Squeezed Grape”. Journal of Biotechnology Research Center 8 (2):57-63. https://doi.org/10.24126/jobrc.2014.8.2.332.