Galo, Gustavo Tomas, Ana Cristina Da Silva Lima, Karina Magro Machado, Lays Brandão Vieira, Vanessa Cabral Martins, Newton Libânio Ferreira, and Adriana Célia Lucarini. 2018. “STUDY OF EXTRACTION OF QUERCETIN FROM PURPLE ONION (Allium Ceppa L.) AND ITS USE AS A NATURAL FOOD PRESERVATIVE”. The Journal of Engineering and Exact Sciences 4 (1). Viçosa/MG, BR:0153-62. https://doi.org/10.18540/jcecvl4iss1pp0153-0162.