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[o]" accesskey="o"><span class="vector-icon mw-ui-icon-logIn mw-ui-icon-wikimedia-logIn"></span> <span>Logi sisse</span></a></li> </ul> </div> </div> <div id="p-user-menu-anon-editor" class="vector-menu mw-portlet mw-portlet-user-menu-anon-editor" > <div class="vector-menu-heading"> Sisselogimata kasutaja leheküljed <a href="/wiki/Juhend:Sissejuhatus" aria-label="Lisateave redigeerimise kohta"><span>lisateave</span></a> </div> <div class="vector-menu-content"> <ul class="vector-menu-content-list"> <li id="pt-anoncontribs" class="mw-list-item"><a href="/wiki/Eri:Minu_kaast%C3%B6%C3%B6" title="Sellelt IP-aadressilt tehtud muudatuste loend [y]" accesskey="y"><span>Kaastöö</span></a></li><li id="pt-anontalk" class="mw-list-item"><a href="/wiki/Eri:Minu_aruteluleht" title="Arutelu sellelt IP-aadressilt tehtud muudatuste kohta [n]" accesskey="n"><span>Arutelu</span></a></li> </ul> </div> </div> </div> </div> </nav> </div> </header> </div> <div class="mw-page-container"> <div class="mw-page-container-inner"> <div class="vector-sitenotice-container"> <div id="siteNotice"><div id="mw-dismissablenotice-anonplace"></div><script>(function(){var node=document.getElementById("mw-dismissablenotice-anonplace");if(node){node.outerHTML="\u003Cdiv class=\"mw-dismissable-notice\"\u003E\u003Cdiv class=\"mw-dismissable-notice-close\"\u003E[\u003Ca tabindex=\"0\" role=\"button\"\u003Epeida\u003C/a\u003E]\u003C/div\u003E\u003Cdiv class=\"mw-dismissable-notice-body\"\u003E\u003C!-- CentralNotice --\u003E\u003Cdiv id=\"localNotice\" data-nosnippet=\"\"\u003E\u003Cdiv class=\"sitenotice\" lang=\"et\" dir=\"ltr\"\u003E\u003Cp\u003E\u003Cspan style=\"font-size:16px\"\u003E\u003Cspan typeof=\"mw:File\"\u003E\u003Cspan title=\"Teadus Vikipeediasse!\"\u003E\u003Cimg alt=\"Teadus Vikipeediasse!\" src=\"//upload.wikimedia.org/wikipedia/commons/thumb/1/1f/Logo_for_e-Science_Photo_Competition_v2_without_text.svg/90px-Logo_for_e-Science_Photo_Competition_v2_without_text.svg.png\" decoding=\"async\" width=\"90\" height=\"21\" class=\"mw-file-element\" srcset=\"//upload.wikimedia.org/wikipedia/commons/thumb/1/1f/Logo_for_e-Science_Photo_Competition_v2_without_text.svg/135px-Logo_for_e-Science_Photo_Competition_v2_without_text.svg.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/1/1f/Logo_for_e-Science_Photo_Competition_v2_without_text.svg/180px-Logo_for_e-Science_Photo_Competition_v2_without_text.svg.png 2x\" data-file-width=\"668\" data-file-height=\"154\" /\u003E\u003C/span\u003E\u003C/span\u003E Alanud on artiklivõistlus \u003Ca href=\"/wiki/Vikipeedia:Teadus_Vikipeediasse_2024\" title=\"Vikipeedia:Teadus Vikipeediasse 2024\"\u003E\u003Cb\u003ETeadus Vikipeediasse\u003C/b\u003E\u003C/a\u003E ning \u003Cb\u003E\u003Ca href=\"/wiki/Vikipeedia:Teadusfoto_pildikorje_2024\" title=\"Vikipeedia:Teadusfoto pildikorje 2024\"\u003Eteadusfoto pildikorje\u003C/a\u003E\u003C/b\u003E! 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Saadaval 37 keeles" > <label id="p-lang-btn-label" for="p-lang-btn-checkbox" class="vector-dropdown-label cdx-button cdx-button--fake-button cdx-button--fake-button--enabled cdx-button--weight-quiet cdx-button--action-progressive mw-portlet-lang-heading-37" aria-hidden="true" ><span class="vector-icon mw-ui-icon-language-progressive mw-ui-icon-wikimedia-language-progressive"></span> <span class="vector-dropdown-label-text">37 keelt</span> </label> <div class="vector-dropdown-content"> <div class="vector-menu-content"> <ul class="vector-menu-content-list"> <li class="interlanguage-link interwiki-af mw-list-item"><a href="https://af.wikipedia.org/wiki/Rasemiese_mengsel" title="Rasemiese mengsel – afrikaani" lang="af" hreflang="af" data-title="Rasemiese mengsel" data-language-autonym="Afrikaans" data-language-local-name="afrikaani" class="interlanguage-link-target"><span>Afrikaans</span></a></li><li class="interlanguage-link interwiki-ar mw-list-item"><a href="https://ar.wikipedia.org/wiki/%D9%85%D8%B2%D9%8A%D8%AC_%D8%B1%D8%A7%D8%B3%D9%8A%D9%85%D9%8A" title="مزيج راسيمي – araabia" lang="ar" hreflang="ar" data-title="مزيج راسيمي" data-language-autonym="العربية" data-language-local-name="araabia" class="interlanguage-link-target"><span>العربية</span></a></li><li class="interlanguage-link interwiki-id mw-list-item"><a href="https://id.wikipedia.org/wiki/Campuran_rasemat" title="Campuran rasemat – indoneesia" lang="id" hreflang="id" data-title="Campuran rasemat" data-language-autonym="Bahasa Indonesia" data-language-local-name="indoneesia" class="interlanguage-link-target"><span>Bahasa Indonesia</span></a></li><li class="interlanguage-link interwiki-ms mw-list-item"><a href="https://ms.wikipedia.org/wiki/Campuran_rasem" title="Campuran rasem – malai" lang="ms" hreflang="ms" data-title="Campuran rasem" data-language-autonym="Bahasa Melayu" data-language-local-name="malai" class="interlanguage-link-target"><span>Bahasa Melayu</span></a></li><li class="interlanguage-link interwiki-bg mw-list-item"><a href="https://bg.wikipedia.org/wiki/%D0%A0%D0%B0%D1%86%D0%B5%D0%BC%D0%B8%D1%87%D0%BD%D0%B0_%D1%81%D0%BC%D0%B5%D1%81" title="Рацемична смес – bulgaaria" lang="bg" hreflang="bg" data-title="Рацемична смес" data-language-autonym="Български" data-language-local-name="bulgaaria" class="interlanguage-link-target"><span>Български</span></a></li><li class="interlanguage-link interwiki-ca mw-list-item"><a href="https://ca.wikipedia.org/wiki/Mescla_rac%C3%A8mica" title="Mescla racèmica – katalaani" lang="ca" hreflang="ca" data-title="Mescla racèmica" data-language-autonym="Català" data-language-local-name="katalaani" class="interlanguage-link-target"><span>Català</span></a></li><li class="interlanguage-link interwiki-cs mw-list-item"><a href="https://cs.wikipedia.org/wiki/Racemick%C3%A1_sm%C4%9Bs" title="Racemická směs – tšehhi" lang="cs" hreflang="cs" data-title="Racemická směs" data-language-autonym="Čeština" data-language-local-name="tšehhi" class="interlanguage-link-target"><span>Čeština</span></a></li><li class="interlanguage-link interwiki-de mw-list-item"><a href="https://de.wikipedia.org/wiki/Racemat" title="Racemat – saksa" lang="de" hreflang="de" data-title="Racemat" data-language-autonym="Deutsch" data-language-local-name="saksa" class="interlanguage-link-target"><span>Deutsch</span></a></li><li class="interlanguage-link interwiki-en mw-list-item"><a href="https://en.wikipedia.org/wiki/Racemic_mixture" title="Racemic mixture – inglise" lang="en" hreflang="en" data-title="Racemic mixture" data-language-autonym="English" data-language-local-name="inglise" class="interlanguage-link-target"><span>English</span></a></li><li class="interlanguage-link interwiki-es mw-list-item"><a href="https://es.wikipedia.org/wiki/Mezcla_rac%C3%A9mica" title="Mezcla racémica – hispaania" lang="es" hreflang="es" data-title="Mezcla racémica" data-language-autonym="Español" data-language-local-name="hispaania" class="interlanguage-link-target"><span>Español</span></a></li><li class="interlanguage-link interwiki-eo mw-list-item"><a href="https://eo.wikipedia.org/wiki/Racema%C4%B5o" title="Racemaĵo – esperanto" lang="eo" hreflang="eo" data-title="Racemaĵo" data-language-autonym="Esperanto" data-language-local-name="esperanto" class="interlanguage-link-target"><span>Esperanto</span></a></li><li class="interlanguage-link interwiki-eu mw-list-item"><a href="https://eu.wikipedia.org/wiki/Nahaste_errazemiko" title="Nahaste errazemiko – baski" lang="eu" hreflang="eu" data-title="Nahaste errazemiko" data-language-autonym="Euskara" data-language-local-name="baski" class="interlanguage-link-target"><span>Euskara</span></a></li><li class="interlanguage-link interwiki-fa mw-list-item"><a href="https://fa.wikipedia.org/wiki/%D9%85%D8%AE%D9%84%D9%88%D8%B7_%D8%B1%D8%A7%D8%B3%D9%85%DB%8C%DA%A9" title="مخلوط راسمیک – pärsia" lang="fa" hreflang="fa" data-title="مخلوط راسمیک" data-language-autonym="فارسی" data-language-local-name="pärsia" class="interlanguage-link-target"><span>فارسی</span></a></li><li class="interlanguage-link interwiki-fr mw-list-item"><a href="https://fr.wikipedia.org/wiki/Rac%C3%A9mique" title="Racémique – prantsuse" lang="fr" hreflang="fr" data-title="Racémique" data-language-autonym="Français" data-language-local-name="prantsuse" class="interlanguage-link-target"><span>Français</span></a></li><li class="interlanguage-link interwiki-gl mw-list-item"><a href="https://gl.wikipedia.org/wiki/Mestura_rac%C3%A9mica" title="Mestura racémica – galeegi" lang="gl" hreflang="gl" data-title="Mestura racémica" data-language-autonym="Galego" data-language-local-name="galeegi" class="interlanguage-link-target"><span>Galego</span></a></li><li class="interlanguage-link interwiki-ko mw-list-item"><a href="https://ko.wikipedia.org/wiki/%EB%9D%BC%EC%84%B8%EB%AF%B8_%ED%98%BC%ED%95%A9%EB%AC%BC" title="라세미 혼합물 – korea" lang="ko" hreflang="ko" data-title="라세미 혼합물" data-language-autonym="한국어" data-language-local-name="korea" class="interlanguage-link-target"><span>한국어</span></a></li><li class="interlanguage-link interwiki-hy mw-list-item"><a href="https://hy.wikipedia.org/wiki/%D5%8C%D5%A1%D6%81%D5%A5%D5%B4%D5%A1%D5%BF%D5%B6%D5%A5%D6%80" title="Ռացեմատներ – armeenia" lang="hy" hreflang="hy" data-title="Ռացեմատներ" data-language-autonym="Հայերեն" data-language-local-name="armeenia" class="interlanguage-link-target"><span>Հայերեն</span></a></li><li class="interlanguage-link interwiki-hr mw-list-item"><a href="https://hr.wikipedia.org/wiki/Racemat" title="Racemat – horvaadi" lang="hr" hreflang="hr" data-title="Racemat" data-language-autonym="Hrvatski" data-language-local-name="horvaadi" class="interlanguage-link-target"><span>Hrvatski</span></a></li><li class="interlanguage-link interwiki-it mw-list-item"><a href="https://it.wikipedia.org/wiki/Racemo_(chimica)" title="Racemo (chimica) – itaalia" lang="it" hreflang="it" data-title="Racemo (chimica)" data-language-autonym="Italiano" data-language-local-name="itaalia" class="interlanguage-link-target"><span>Italiano</span></a></li><li class="interlanguage-link interwiki-he mw-list-item"><a href="https://he.wikipedia.org/wiki/%D7%AA%D7%A2%D7%A8%D7%95%D7%91%D7%AA_%D7%A8%D7%A6%D7%9E%D7%99%D7%AA" title="תערובת רצמית – heebrea" lang="he" hreflang="he" data-title="תערובת רצמית" data-language-autonym="עברית" data-language-local-name="heebrea" class="interlanguage-link-target"><span>עברית</span></a></li><li class="interlanguage-link interwiki-kk mw-list-item"><a href="https://kk.wikipedia.org/wiki/%D0%A0%D0%B0%D1%86%D0%B5%D0%BC%D0%B0%D1%82" title="Рацемат – kasahhi" lang="kk" hreflang="kk" data-title="Рацемат" data-language-autonym="Қазақша" data-language-local-name="kasahhi" class="interlanguage-link-target"><span>Қазақша</span></a></li><li class="interlanguage-link interwiki-nl mw-list-item"><a href="https://nl.wikipedia.org/wiki/Racemaat" title="Racemaat – hollandi" lang="nl" hreflang="nl" data-title="Racemaat" data-language-autonym="Nederlands" data-language-local-name="hollandi" class="interlanguage-link-target"><span>Nederlands</span></a></li><li class="interlanguage-link interwiki-ja mw-list-item"><a href="https://ja.wikipedia.org/wiki/%E3%83%A9%E3%82%BB%E3%83%9F%E4%BD%93" title="ラセミ体 – jaapani" lang="ja" hreflang="ja" data-title="ラセミ体" data-language-autonym="日本語" data-language-local-name="jaapani" class="interlanguage-link-target"><span>日本語</span></a></li><li class="interlanguage-link interwiki-pl mw-list-item"><a href="https://pl.wikipedia.org/wiki/Mieszanina_racemiczna" title="Mieszanina racemiczna – poola" lang="pl" hreflang="pl" data-title="Mieszanina racemiczna" data-language-autonym="Polski" data-language-local-name="poola" class="interlanguage-link-target"><span>Polski</span></a></li><li class="interlanguage-link interwiki-pt mw-list-item"><a href="https://pt.wikipedia.org/wiki/Mistura_rac%C3%A9mica" title="Mistura racémica – portugali" lang="pt" hreflang="pt" data-title="Mistura racémica" data-language-autonym="Português" data-language-local-name="portugali" class="interlanguage-link-target"><span>Português</span></a></li><li class="interlanguage-link interwiki-ro mw-list-item"><a href="https://ro.wikipedia.org/wiki/Amestec_racemic" title="Amestec racemic – rumeenia" lang="ro" hreflang="ro" data-title="Amestec racemic" data-language-autonym="Română" data-language-local-name="rumeenia" class="interlanguage-link-target"><span>Română</span></a></li><li class="interlanguage-link interwiki-ru mw-list-item"><a href="https://ru.wikipedia.org/wiki/%D0%A0%D0%B0%D1%86%D0%B5%D0%BC%D0%B0%D1%82" title="Рацемат – vene" lang="ru" hreflang="ru" data-title="Рацемат" data-language-autonym="Русский" data-language-local-name="vene" class="interlanguage-link-target"><span>Русский</span></a></li><li class="interlanguage-link interwiki-sk mw-list-item"><a href="https://sk.wikipedia.org/wiki/Racem%C3%A1t" title="Racemát – slovaki" lang="sk" hreflang="sk" data-title="Racemát" data-language-autonym="Slovenčina" data-language-local-name="slovaki" class="interlanguage-link-target"><span>Slovenčina</span></a></li><li class="interlanguage-link interwiki-sl mw-list-item"><a href="https://sl.wikipedia.org/wiki/Racemna_zmes" title="Racemna zmes – sloveeni" lang="sl" hreflang="sl" data-title="Racemna zmes" data-language-autonym="Slovenščina" data-language-local-name="sloveeni" class="interlanguage-link-target"><span>Slovenščina</span></a></li><li class="interlanguage-link interwiki-sr mw-list-item"><a href="https://sr.wikipedia.org/wiki/%D0%A0%D0%B0%D1%86%D0%B5%D0%BC%D1%81%D0%BA%D0%B0_%D0%BC%D0%BE%D0%B4%D0%B8%D1%84%D0%B8%D0%BA%D0%B0%D1%86%D0%B8%D1%98%D0%B0" title="Рацемска модификација – serbia" lang="sr" hreflang="sr" data-title="Рацемска модификација" data-language-autonym="Српски / srpski" data-language-local-name="serbia" class="interlanguage-link-target"><span>Српски / srpski</span></a></li><li class="interlanguage-link interwiki-sh mw-list-item"><a href="https://sh.wikipedia.org/wiki/Racemska_modifikacija" title="Racemska modifikacija – serbia-horvaadi" lang="sh" hreflang="sh" data-title="Racemska modifikacija" data-language-autonym="Srpskohrvatski / српскохрватски" data-language-local-name="serbia-horvaadi" class="interlanguage-link-target"><span>Srpskohrvatski / српскохрватски</span></a></li><li class="interlanguage-link interwiki-fi mw-list-item"><a href="https://fi.wikipedia.org/wiki/Raseeminen_seos" title="Raseeminen seos – soome" lang="fi" hreflang="fi" data-title="Raseeminen seos" data-language-autonym="Suomi" data-language-local-name="soome" class="interlanguage-link-target"><span>Suomi</span></a></li><li class="interlanguage-link interwiki-sv mw-list-item"><a href="https://sv.wikipedia.org/wiki/Racemat" title="Racemat – rootsi" lang="sv" hreflang="sv" data-title="Racemat" data-language-autonym="Svenska" data-language-local-name="rootsi" 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class="mw-list-item"><a href="/w/index.php?title=Ratsemaat&action=info" title="Lisateave selle lehekülje kohta"><span>Lehekülje teave</span></a></li><li id="t-cite" class="mw-list-item"><a href="/w/index.php?title=Eri:Sellele_lehek%C3%BCljele_viitamine&page=Ratsemaat&id=4037204&wpFormIdentifier=titleform" title="Teave sellele leheküljele viitamise kohta"><span>Viita leheküljele</span></a></li><li id="t-urlshortener" class="mw-list-item"><a href="/w/index.php?title=Eri:UrlShortener&url=https%3A%2F%2Fet.wikipedia.org%2Fwiki%2FRatsemaat"><span>Hangi lühendatud URL</span></a></li><li id="t-urlshortener-qrcode" class="mw-list-item"><a href="/w/index.php?title=Eri:QrCode&url=https%3A%2F%2Fet.wikipedia.org%2Fwiki%2FRatsemaat"><span>Laadi alla QR-kood</span></a></li> </ul> </div> </div> <div id="p-wikibase-otherprojects" class="vector-menu mw-portlet mw-portlet-wikibase-otherprojects" > <div class="vector-menu-heading"> Teistes projektides </div> <div class="vector-menu-content"> <ul class="vector-menu-content-list"> <li id="t-wikibase" class="wb-otherproject-link wb-otherproject-wikibase-dataitem mw-list-item"><a href="https://www.wikidata.org/wiki/Special:EntityPage/Q467717" title="Link andmehoidla seonduva üksuse juurde [g]" accesskey="g"><span>Andmeüksus</span></a></li> </ul> </div> </div> </div> </div> </div> </div> </nav> </div> </div> </div> <div class="vector-column-end"> <div class="vector-sticky-pinned-container"> <nav class="vector-page-tools-landmark" aria-label="Lehekülje tööriistad"> <div id="vector-page-tools-pinned-container" class="vector-pinned-container"> </div> </nav> <nav class="vector-appearance-landmark" aria-label="Ilme"> <div id="vector-appearance-pinned-container" class="vector-pinned-container"> <div id="vector-appearance" class="vector-appearance vector-pinnable-element"> <div class="vector-pinnable-header vector-appearance-pinnable-header vector-pinnable-header-pinned" data-feature-name="appearance-pinned" 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mw-parser-output" lang="et" dir="ltr"><p><b>Ratsemaat</b> ehk <b>ratseemiline segu</b> on <a href="/wiki/Kiraalne_molekul" title="Kiraalne molekul">kiraalsete</a> <a href="/wiki/Isomeer" class="mw-redirect" title="Isomeer">isomeersete</a> <a href="/wiki/Molekul" title="Molekul">molekulide</a> (<a href="/wiki/Enantiomeer" title="Enantiomeer">enantiomeeride</a>) segu võrdsetes hulkades. </p><p>Tavalistes <a href="/wiki/Keemiline_reaktsioon" title="Keemiline reaktsioon">keemilistes reaktsioonides</a>, kui moodustub <a href="/wiki/Kiraalkese" class="mw-redirect" title="Kiraalkese">kiraalkeskmega</a> molekul, saadakse enantiomeeride 1:1 segu. Enantiomeerid <a href="/wiki/Optiline_aktiivsus" title="Optiline aktiivsus">pööravad polariseeritud valguse tasandit</a> vastassuundades ja 1:1 segu korral võrdsel määral, seetõttu see segu <a href="/wiki/Optiline_aktiivsus" title="Optiline aktiivsus">optilist aktiivsust</a> ei oma. Peale eelnimetatu võivad mõnel juhul ratsemaadi füüsikalised omadused erineda puhaste enantiomeeride omadustest. Kõige sagedamini esineb segu <a href="/wiki/Sulamistemperatuur" title="Sulamistemperatuur">sulamistemperatuuri</a> erinevus, vahel ka <a href="/wiki/Keemistemperatuur" title="Keemistemperatuur">keemistemperatuuri</a> ja <a href="/wiki/Lahustuvus" title="Lahustuvus">lahustuvuse</a> erinevus. Farmakoloogias on täheldatud erinevusi retsemaatide ja puhaste enantiomeeride toimes. </p><p><b>Aratseemiline</b> ehk <b>mitteratseemiline</b> on aine, mis koosneb kiraalsetest molekulidest ja sisaldab ebavõrdses koguses enantiomeere. </p> <div class="mw-heading mw-heading2"><h2 id="Vaata_ka">Vaata ka</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Ratsemaat&veaction=edit&section=1" title="Muuda alaosa "Vaata ka"" class="mw-editsection-visualeditor"><span>muuda</span></a><span class="mw-editsection-divider"> | </span><a href="/w/index.php?title=Ratsemaat&action=edit&section=1" title="Muuda alaosa "Vaata ka" lähteteksti"><span>muuda lähteteksti</span></a><span class="mw-editsection-bracket">]</span></span></div> <ul><li><a href="/wiki/Enantiomeer" title="Enantiomeer">Enantiomeer</a></li> <li><a href="/wiki/Kiraalne_molekul" title="Kiraalne molekul">Kiraalne molekul</a></li></ul>    </div><noscript><img src="https://login.wikimedia.org/wiki/Special:CentralAutoLogin/start?type=1x1" alt="" width="1" height="1" style="border: none; position: absolute;"></noscript> <div class="printfooter" data-nosnippet="">Pärit leheküljelt "<a dir="ltr" href="https://et.wikipedia.org/w/index.php?title=Ratsemaat&oldid=4037204">https://et.wikipedia.org/w/index.php?title=Ratsemaat&oldid=4037204</a>"</div></div> <div id="catlinks" class="catlinks" data-mw="interface"><div id="mw-normal-catlinks" class="mw-normal-catlinks"><a href="/wiki/Eri:Kategooriad" title="Eri:Kategooriad">Kategooria</a>: <ul><li><a href="/wiki/Kategooria:Orgaaniline_keemia" title="Kategooria:Orgaaniline keemia">Orgaaniline keemia</a></li></ul></div></div> </div> </main> </div> <div class="mw-footer-container"> <footer id="footer" class="mw-footer" > <ul id="footer-info"> <li id="footer-info-lastmod"> Selle lehekülje viimane muutmine: 12:29, 30. oktoober 2014.</li> <li id="footer-info-copyright">Tekst on kasutatav vastavalt Creative Commonsi litsentsile "<a rel="nofollow" class="external text" href="https://creativecommons.org/licenses/by-sa/4.0/deed.et">Autorile viitamine + jagamine samadel tingimustel</a>"; sellele võivad lisanduda täiendavad tingimused. 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