&lt;b&gt;Extraction of total polyphenols from hibiscus (&lt;i&gt;Hibiscus sabdariffa&lt;/i&gt; L.) and waxweed / ‘sete-sangrias’ (&lt;i&gt;Cuphea carthagenensis&lt;/i&gt;) and evaluation of their antioxidant potential
Acta Scientiarum. Technology/Acta scientiarum. Technology