<?xml version="1.0" encoding="utf-8"?><!DOCTYPE Zthes SYSTEM "http://zthes.z3950.org/xml/zthes-05.dtd">  <Zthes><term><termId>31305923</termId><termName>preservative</termName><termType>PT</termType><termNote><![CDATA[ Substance added to materials, natural science specimens, or foodstuffs to preserve them against deterioration, discoloration, or spoilage. In paint or adhesive, prevervatives are nonvolative chemicals added to prevent fermentation and mold growth. ]]></termNote><termCreatedDate>2026-03-30 20:22:18</termCreatedDate><relation><relationType>UF</relationType><termId>31305924</termId><termName>preservatives</termName><termType>ND</termType></relation><relation><relationType>BT</relationType><termId>31298939</termId><termName>materials by function</termName><termType>PT</termType></relation><relation><relationType>NT</relationType><termId>31320057</termId><termName>[preservative by composition or origin]</termName><termType>PT</termType></relation><relation><relationType>NT</relationType><termId>31320058</termId><termName>[preservative by function]</termName><termType>PT</termType></relation></term>  </Zthes>