<?xml version="1.0" encoding="utf-8"?><!DOCTYPE Zthes SYSTEM "http://zthes.z3950.org/xml/zthes-05.dtd">  <Zthes><term><termId>31437151</termId><termName>turnsole</termName><termType>PT</termType><termNote><![CDATA[ A natural purple colorant and dye obtained from the seeds of Chrozophora tinctoria. It is not lightfast. Turnsole is an acid-base indicator dye that is red in acid and blue to violet in alkalis. It was used as a violet watercolor pigment in 14th century Italian manuscripts and as a purple textile dye from medieval times to the 17th century. It is used as a food colorant, as in Dutch cheese and certain liquors. ]]></termNote><termCreatedDate>2026-03-30 20:57:52</termCreatedDate><relation><relationType>BT</relationType><termId>31410940</termId><termName>vegetable dye</termName><termType>PT</termType></relation><relation><relationType>RT</relationType><termId>31468893</termId><termName>Chrozophora tinctoria</termName><termType>PT</termType></relation></term>  </Zthes>