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        <full_title>The Open Dentistry Journal</full_title>
        <abbrev_title>TODENTJ</abbrev_title>
        <issn media_type="print">1874-2106</issn>
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          <month>08</month>
          <day>31</day>
          <year>2017</year>
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        <journal_volume>
          <volume>11</volume>
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        <issue>1</issue>
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        <titles>
          <title>Comparison of Composition and Anticaries Effect of Galla Chinensis Extracts with Different Isolation Methods</title>
        </titles>
        <contributors>
          <person_name contributor_role="author" sequence="first">
            <given_name>Xuelian</given_name>
            <surname>Huang</surname>
          </person_name>
          <person_name contributor_role="author" sequence="additional">
            <given_name>Meng</given_name>
            <surname>Deng</surname>
          </person_name>
          <person_name contributor_role="author" sequence="additional">
            <given_name>Mingdong</given_name>
            <surname>Liu</surname>
          </person_name>
          <person_name contributor_role="author" sequence="additional">
            <given_name>Lei</given_name>
            <surname>Cheng</surname>
          </person_name>
          <person_name contributor_role="author" sequence="additional">
            <given_name>R.A.M.</given_name>
            <surname>Exterkate</surname>
          </person_name>
          <person_name contributor_role="author" sequence="additional">
            <given_name>Jiyao</given_name>
            <surname>Li</surname>
          </person_name>
          <person_name contributor_role="author" sequence="additional">
            <given_name>Xuedong</given_name>
            <surname>Zhou</surname>
          </person_name>
          <person_name contributor_role="author" sequence="additional">
            <given_name>Jacob. M.</given_name>
            <surname>Ten Cate</surname>
          </person_name>
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        <jats:abstract>
                <jats:sec>
                    <jats:title>Objectives:</jats:title>
                    <jats:p>
                        <jats:italic>Galla chinensis</jats:italic> water extract (GCE) has been demonstrated to inhibit dental caries by favorably shifting the demineralization/remineralization balance of enamel and inhibiting the biomass and acid formation of dental biofilm. The present study focused on the comparison of composition and anticaries effect of <jats:italic>Galla chinensis</jats:italic> extracts with different isolation methods, aiming to improve the efficacy of caries prevention.</jats:p>
                </jats:sec>
                <jats:sec>
                    <jats:title>Methods:</jats:title>
                    <jats:p>The composition of water extract (GCE), ethanol extract (eGCE) and commercial tannic acid was compared. High performance liquid chromatography coupled to electrospray ionization-time of flight-mass spectrometry (HPLC-ESI-TOF-MS) analysis was used to analyze the main ingredients. <jats:italic>In vitro</jats:italic> pH-cycling regime and polymicrobial biofilms model were used to assess the ability of different <jats:italic>Galla chinensis</jats:italic> extracts to inhibit enamel demineralization, acid formation and biofilm formation.</jats:p>
                </jats:sec>
                <jats:sec>
                    <jats:title>Results:</jats:title>
                    <jats:p>All the GCE, eGCE and tannic acid contained a high level of total phenolics. HPLC-ESI-TOF-MS analysis showed that the main in<jats:underline>g</jats:underline>redients of GCE were gallic acid (GA), while eGCE mainly contained 4-7 galloylglucopyranoses (GGs) and tannic acid mainly contained 5-10 GGs. Furthermore, eGCE and tannic acid showed a better effect on inhibiting enamel demineralization, acid formation and biofilm formation compared to GCE.</jats:p>
                </jats:sec>
                <jats:sec>
                    <jats:title>Conclusions:</jats:title>
                    <jats:p>
                        <jats:italic>Galla chinensis</jats:italic> extracts with higher tannin content were suggested to have higher potential to prevent dental caries.</jats:p>
                </jats:sec>
            </jats:abstract>
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          <first_page>447</first_page>
          <last_page>459</last_page>
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