<?xml version="1.0" encoding="utf-8"?><!DOCTYPE Zthes SYSTEM "http://zthes.z3950.org/xml/zthes-05.dtd">  <Zthes><term><termId>31316547</termId><termName>flavonoids</termName><termType>PT</termType><termNote><![CDATA[ Large group of heterocyclic compounds, providing many natural colorants. Many natural dyes and pigments (e.g., quercitron, anthocyanin) are flavonoids. ]]></termNote><termCreatedDate>2026-03-30 20:25:14</termCreatedDate><relation><relationType>UF</relationType><termId>31316548</termId><termName>flavonoid</termName><termType>ND</termType></relation><relation><relationType>BT</relationType><termId>31303850</termId><termName>plant pigment</termName><termType>PT</termType></relation><relation><relationType>NT</relationType><termId>31339855</termId><termName>anthocyanin</termName><termType>PT</termType></relation><relation><relationType>NT</relationType><termId>31339859</termId><termName>quercitron</termName><termType>PT</termType></relation></term>  </Zthes>