Comparison of the Inhibition of Monoamine Oxidase and Butyrylcholinesterase Activities by Infusions from Green Tea and Some Citrus Peels
Identifieur interne : 000872 ( Pmc/Checkpoint ); précédent : 000871; suivant : 000873Comparison of the Inhibition of Monoamine Oxidase and Butyrylcholinesterase Activities by Infusions from Green Tea and Some Citrus Peels
Auteurs : Ayokunle O. Ademosun [Nigeria] ; Ganiyu Oboh [Nigeria]Source :
- International Journal of Alzheimer's Disease [ 2090-8024 ] ; 2014.
Abstract
This study sought to investigate the effect of infusions from green tea (
Url:
DOI: 10.1155/2014/586407
PubMed: 25243093
PubMed Central: 4138732
Affiliations:
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<author><name sortKey="Ademosun, Ayokunle O" sort="Ademosun, Ayokunle O" uniqKey="Ademosun A" first="Ayokunle O." last="Ademosun">Ayokunle O. Ademosun</name>
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<author><name sortKey="Oboh, Ganiyu" sort="Oboh, Ganiyu" uniqKey="Oboh G" first="Ganiyu" last="Oboh">Ganiyu Oboh</name>
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<sourceDesc><biblStruct><analytic><title xml:lang="en" level="a" type="main">Comparison of the Inhibition of Monoamine Oxidase and Butyrylcholinesterase Activities by Infusions from Green Tea and Some Citrus Peels</title>
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<author><name sortKey="Oboh, Ganiyu" sort="Oboh, Ganiyu" uniqKey="Oboh G" first="Ganiyu" last="Oboh">Ganiyu Oboh</name>
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<front><div type="abstract" xml:lang="en"><p>This study sought to investigate the effect of infusions from green tea (<italic>Camellia sinensis</italic>
) and some citrus peels [shaddock (<italic>Citrus maxima</italic>
), grapefruit (<italic>Citrus paradisi</italic>
), and orange (<italic>Citrus sinensis</italic>
)] on key enzymes relevant to the management of neurodegenerative conditions [monoamine oxidase (MAO) and butyrylcholinesterase (BChE)]. The total phenol contents and antioxidant activities as typified by their 2,2<sup>′</sup>
-azino-bis(3-ethylbenzthiazoline-6-sulphonic acid) (ABTS) radicals scavenging abilities, ferric reducing antioxidant properties, and Fe<sup>2+</sup>
chelating abilities were also investigated. Green tea had the highest total phenol (43.3 mg/g) and total flavonoid (16.4 mg/g) contents, when compared to orange [total phenol (19.6 mg/g), total flavonoid (6.5 mg/g)], shaddock [total phenol (16.3 mg/g), total flavonoid (5.2 mg/g)], and grapefruit [total phenol (17.7 mg/g), total flavonoid (5.9 mg/g)]. Orange (EC<sub>50</sub>
= 1.78 mg/mL) had the highest MAO inhibitory ability, while green tea had the least MAO inhibitory ability (EC<sub>50</sub>
= 2.56 mg/mL). Similarly, green tea had the least BChE inhibitory ability (EC<sub>50</sub>
= 5.43 mg/mL) when compared to the citrus peels' infusions. However, green tea infusions had the strongest highest ABTS radical scavenging ability, reducing power, and Fe<sup>2+</sup>
chelating ability. The inhibition of MAO and BChE activities by the green tea and citrus peels infusions could make them good dietary means for the prevention/management of neurodegenerative conditions.</p>
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<pmc article-type="research-article"><pmc-dir>properties open_access</pmc-dir>
<front><journal-meta><journal-id journal-id-type="nlm-ta">Int J Alzheimers Dis</journal-id>
<journal-id journal-id-type="iso-abbrev">Int J Alzheimers Dis</journal-id>
<journal-id journal-id-type="publisher-id">IJAD</journal-id>
<journal-title-group><journal-title>International Journal of Alzheimer's Disease</journal-title>
</journal-title-group>
<issn pub-type="ppub">2090-8024</issn>
<issn pub-type="epub">2090-0252</issn>
<publisher><publisher-name>Hindawi Publishing Corporation</publisher-name>
</publisher>
</journal-meta>
<article-meta><article-id pub-id-type="pmid">25243093</article-id>
<article-id pub-id-type="pmc">4138732</article-id>
<article-id pub-id-type="doi">10.1155/2014/586407</article-id>
<article-categories><subj-group subj-group-type="heading"><subject>Research Article</subject>
</subj-group>
</article-categories>
<title-group><article-title>Comparison of the Inhibition of Monoamine Oxidase and Butyrylcholinesterase Activities by Infusions from Green Tea and Some Citrus Peels</article-title>
</title-group>
<contrib-group><contrib contrib-type="author"><name><surname>Ademosun</surname>
<given-names>Ayokunle O.</given-names>
</name>
<xref ref-type="aff" rid="I1"></xref>
<xref ref-type="corresp" rid="cor1">*</xref>
</contrib>
<contrib contrib-type="author"><contrib-id contrib-id-type="orcid">http://orcid.org/0000-0001-5167-9779</contrib-id>
<name><surname>Oboh</surname>
<given-names>Ganiyu</given-names>
</name>
<xref ref-type="aff" rid="I1"></xref>
</contrib>
</contrib-group>
<aff id="I1">Functional Foods and Nutraceuticals Unit, Department of Biochemistry, Federal University of Technology, PMB 704, Akure 340001, Nigeria</aff>
<author-notes><corresp id="cor1">*Ayokunle O. Ademosun: <email>ayoademosun@yahoo.com</email>
</corresp>
<fn fn-type="other"><p>Academic Editor: Paula I. Moreira</p>
</fn>
</author-notes>
<pub-date pub-type="ppub"><year>2014</year>
</pub-date>
<pub-date pub-type="epub"><day>5</day>
<month>8</month>
<year>2014</year>
</pub-date>
<volume>2014</volume>
<elocation-id>586407</elocation-id>
<history><date date-type="received"><day>31</day>
<month>5</month>
<year>2014</year>
</date>
<date date-type="rev-recd"><day>6</day>
<month>7</month>
<year>2014</year>
</date>
<date date-type="accepted"><day>20</day>
<month>7</month>
<year>2014</year>
</date>
</history>
<permissions><copyright-statement>Copyright © 2014 A. O. Ademosun and G. Oboh.</copyright-statement>
<copyright-year>2014</copyright-year>
<license license-type="open-access"><license-p>This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.</license-p>
</license>
</permissions>
<abstract><p>This study sought to investigate the effect of infusions from green tea (<italic>Camellia sinensis</italic>
) and some citrus peels [shaddock (<italic>Citrus maxima</italic>
), grapefruit (<italic>Citrus paradisi</italic>
), and orange (<italic>Citrus sinensis</italic>
)] on key enzymes relevant to the management of neurodegenerative conditions [monoamine oxidase (MAO) and butyrylcholinesterase (BChE)]. The total phenol contents and antioxidant activities as typified by their 2,2<sup>′</sup>
-azino-bis(3-ethylbenzthiazoline-6-sulphonic acid) (ABTS) radicals scavenging abilities, ferric reducing antioxidant properties, and Fe<sup>2+</sup>
chelating abilities were also investigated. Green tea had the highest total phenol (43.3 mg/g) and total flavonoid (16.4 mg/g) contents, when compared to orange [total phenol (19.6 mg/g), total flavonoid (6.5 mg/g)], shaddock [total phenol (16.3 mg/g), total flavonoid (5.2 mg/g)], and grapefruit [total phenol (17.7 mg/g), total flavonoid (5.9 mg/g)]. Orange (EC<sub>50</sub>
= 1.78 mg/mL) had the highest MAO inhibitory ability, while green tea had the least MAO inhibitory ability (EC<sub>50</sub>
= 2.56 mg/mL). Similarly, green tea had the least BChE inhibitory ability (EC<sub>50</sub>
= 5.43 mg/mL) when compared to the citrus peels' infusions. However, green tea infusions had the strongest highest ABTS radical scavenging ability, reducing power, and Fe<sup>2+</sup>
chelating ability. The inhibition of MAO and BChE activities by the green tea and citrus peels infusions could make them good dietary means for the prevention/management of neurodegenerative conditions.</p>
</abstract>
</article-meta>
</front>
<floats-group><fig id="fig1" orientation="portrait" position="float"><label>Figure 1</label>
<caption><p>Monoamine oxidase inhibitory activity of infusions of green tea and some citrus peels. Values represent means ± standard deviation of triplicate readings.</p>
</caption>
<graphic xlink:href="IJAD2014-586407.001"></graphic>
</fig>
<fig id="fig2" orientation="portrait" position="float"><label>Figure 2</label>
<caption><p>Butyrylcholinesterase inhibitory activity of infusions of green tea and some citrus peels. Values represent means ± standard deviation of triplicate readings.</p>
</caption>
<graphic xlink:href="IJAD2014-586407.002"></graphic>
</fig>
<fig id="fig3" orientation="portrait" position="float"><label>Figure 3</label>
<caption><p>Fe<sup>2+</sup>
chelating abilities of infusions of green tea and some citrus peels. Values represent means ± standard deviation of triplicate readings.</p>
</caption>
<graphic xlink:href="IJAD2014-586407.003"></graphic>
</fig>
<fig id="fig4" orientation="portrait" position="float"><label>Figure 4</label>
<caption><p>ABTS∗ scavenging ability of infusions of green tea and some citrus peels.</p>
</caption>
<graphic xlink:href="IJAD2014-586407.004"></graphic>
</fig>
<table-wrap id="tab1" orientation="portrait" position="float"><label>Table 1</label>
<caption><p>Total phenolic and flavonoid contents of infusions of green tea and some citrus peels.</p>
</caption>
<table frame="hsides" rules="groups"><thead><tr><th align="left" rowspan="1" colspan="1">Sample </th>
<th align="center" rowspan="1" colspan="1">Total phenol (mg GAE/g)</th>
<th align="center" rowspan="1" colspan="1">Total flavonoid (mg QE/g)</th>
</tr>
</thead>
<tbody><tr><td align="left" rowspan="1" colspan="1">Green tea </td>
<td align="center" rowspan="1" colspan="1">43.3 ± 2.3<sup>a</sup>
</td>
<td align="center" rowspan="1" colspan="1">16.0 ± 2.1<sup>a</sup>
</td>
</tr>
<tr><td align="left" rowspan="1" colspan="1">Orange </td>
<td align="center" rowspan="1" colspan="1">19.6 ± 1.1<sup>b</sup>
</td>
<td align="center" rowspan="1" colspan="1"> 6.5 ± 1.2<sup>b</sup>
</td>
</tr>
<tr><td align="left" rowspan="1" colspan="1">Shaddock </td>
<td align="center" rowspan="1" colspan="1">16.3 ± 1.1<sup>b</sup>
</td>
<td align="center" rowspan="1" colspan="1"> 5.2 ± 0.9<sup>b</sup>
</td>
</tr>
<tr><td align="left" rowspan="1" colspan="1">Grapefruit </td>
<td align="center" rowspan="1" colspan="1">17.7 ± 1.2<sup>b</sup>
</td>
<td align="center" rowspan="1" colspan="1"> 5.9 ± 0.8<sup>b</sup>
</td>
</tr>
</tbody>
</table>
<table-wrap-foot><fn><p>Values represent means of triplicate. Values with the same alphabet along the same column are not significantly different (<italic>P</italic>
> 0.05).</p>
</fn>
<fn><p>GAE, gallic acid equivalents; QE, quercetin equivalents.</p>
</fn>
</table-wrap-foot>
</table-wrap>
<table-wrap id="tab2" orientation="portrait" position="float"><label>Table 2</label>
<caption><p>EC<sub>50</sub>
values of inhibition of monoamine oxidase, butyrylcholinesterase, and Fe<sup>2+</sup>
chelating abilities of green tea and some citrus peels' infusions.</p>
</caption>
<table frame="hsides" rules="groups"><thead><tr><th align="left" rowspan="1" colspan="1"> </th>
<th align="center" rowspan="1" colspan="1">Green tea </th>
<th align="center" rowspan="1" colspan="1">Orange</th>
<th align="center" rowspan="1" colspan="1">Grapefruit</th>
<th align="center" rowspan="1" colspan="1">Shaddock </th>
</tr>
</thead>
<tbody><tr><td align="left" rowspan="1" colspan="1">MAO inhibition </td>
<td align="center" rowspan="1" colspan="1">2.56 ± 0.09<sup>a</sup>
</td>
<td align="center" rowspan="1" colspan="1">1.78 ± 0.11<sup>b</sup>
</td>
<td align="center" rowspan="1" colspan="1">2.00 ± 0.08<sup>c</sup>
</td>
<td align="center" rowspan="1" colspan="1">1.93 ± 0.06<sup>c</sup>
</td>
</tr>
<tr><td align="left" rowspan="1" colspan="1">BChE inhibition </td>
<td align="center" rowspan="1" colspan="1">5.43 ± 0.10<sup>a</sup>
</td>
<td align="center" rowspan="1" colspan="1">3.61 ± 0.06<sup>b</sup>
</td>
<td align="center" rowspan="1" colspan="1">4.20 ± 0.09<sup>c</sup>
</td>
<td align="center" rowspan="1" colspan="1">4.42 ± 0.07<sup>d</sup>
</td>
</tr>
<tr><td align="left" rowspan="1" colspan="1">Fe<sup>2+</sup>
chelation </td>
<td align="center" rowspan="1" colspan="1">0.63 ± 0.11<sup>a</sup>
</td>
<td align="center" rowspan="1" colspan="1">0.72 ± 0.09<sup>b</sup>
</td>
<td align="center" rowspan="1" colspan="1">0.81 ± 0.07<sup>c</sup>
</td>
<td align="center" rowspan="1" colspan="1">0.82 ± 0.09<sup>c</sup>
</td>
</tr>
</tbody>
</table>
<table-wrap-foot><fn><p>Values represent means of triplicate. Values with the same alphabet along the same row are not significantly different (<italic>P</italic>
> 0.05).</p>
</fn>
</table-wrap-foot>
</table-wrap>
</floats-group>
</pmc>
<affiliations><list><country><li>Nigeria</li>
</country>
</list>
<tree><country name="Nigeria"><noRegion><name sortKey="Ademosun, Ayokunle O" sort="Ademosun, Ayokunle O" uniqKey="Ademosun A" first="Ayokunle O." last="Ademosun">Ayokunle O. Ademosun</name>
</noRegion>
<name sortKey="Oboh, Ganiyu" sort="Oboh, Ganiyu" uniqKey="Oboh G" first="Ganiyu" last="Oboh">Ganiyu Oboh</name>
</country>
</tree>
</affiliations>
</record>
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