<?xml version="1.0" encoding="utf-8"?><!DOCTYPE Zthes SYSTEM "http://zthes.z3950.org/xml/zthes-05.dtd">  <Zthes><term><termId>31320331</termId><termName>lactic acid</termName><termType>PT</termType><termNote><![CDATA[ Acid that occurs in sour milk as a thick water-soluble liquid. It is induced by bacterial decomposition of sugar, a process of fermentation; it may also be found in molasses, many fruits, beer and wine. Lactic acid is used in dyeing and leather processing.  ]]></termNote><termCreatedDate>2026-03-30 20:26:20</termCreatedDate><relation><relationType>UF</relationType><termId>31320332</termId><termName>acid, lactic</termName><termType>ND</termType></relation><relation><relationType>UF</relationType><termId>31320333</termId><termName>acid, milk</termName><termType>ND</termType></relation><relation><relationType>UF</relationType><termId>31320334</termId><termName>milk acid</termName><termType>ND</termType></relation><relation><relationType>BT</relationType><termId>31306060</termId><termName>acid</termName><termType>PT</termType></relation></term>  </Zthes>