<?xml version="1.0" encoding="UTF-8"?><xml><records><record><source-app name="Biblio" version="7.x">Drupal-Biblio</source-app><ref-type>17</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Kokoette Bassey</style></author><author><style face="normal" font="default" size="100%">Patience Mamabolo</style></author><author><style face="normal" font="default" size="100%">Mmamosheledi Mothibe</style></author><author><style face="normal" font="default" size="100%">Freddy Muganza</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Phytochemical Profiling and Chemical Marker Compounds Identification in Helichrysum caespititium: A Chemometrics and 2D Gas Chromatography Time of Flight Mass Spectrometry (GCxGC-TOF-MS) Perspective</style></title><secondary-title><style face="normal" font="default" size="100%">Pharmacognosy Journal</style></secondary-title></titles><keywords><keyword><style  face="normal" font="default" size="100%">Chemical markers</style></keyword><keyword><style  face="normal" font="default" size="100%">Chemometrics</style></keyword><keyword><style  face="normal" font="default" size="100%">GCxGC-TOF-MS</style></keyword><keyword><style  face="normal" font="default" size="100%">Helichrysum caespititium</style></keyword><keyword><style  face="normal" font="default" size="100%">Phytochemical profiling</style></keyword></keywords><dates><year><style  face="normal" font="default" size="100%">2021</style></year><pub-dates><date><style  face="normal" font="default" size="100%">March 2021</style></date></pub-dates></dates><volume><style face="normal" font="default" size="100%">13</style></volume><pages><style face="normal" font="default" size="100%">486-494</style></pages><language><style face="normal" font="default" size="100%">eng</style></language><abstract><style face="normal" font="default" size="100%">&lt;p class=&quot;rtejustify&quot;&gt;&lt;strong&gt;Introduction:&lt;/strong&gt; &lt;em&gt;Helichrysum caespititium &lt;/em&gt;is a medicinal plant indigenous to South Africa. Hitherto, only 2 compounds- caespititin and 2-methyl-4-[2’,4’,6’-trihydroxy-3’-(2-methylpropanoyl)-phenyl] but-2-enyl acetate have been reported from this species. Phytochemical profiling of the plant and identification of chemical markers are limited. &lt;strong&gt;Objectives: &lt;/strong&gt;Determining phytochemical profile of &lt;em&gt;H. caespititium&lt;/em&gt; and identifying the major marker compounds in its extracts. &lt;strong&gt;Methods:&lt;/strong&gt; A two-dimensional gas chromatography coupled with time-of-flight mass spectrometry (GCxGC-TOF-MS) was used to analyze &lt;em&gt;H. caespititium &lt;/em&gt;extracts (acetone, methanol, and dichloromethane). The marker compounds from the generated phytochemical fingerprints were identified using Column plots and chemometrics orthogonal partial least squares discriminant analysis (OPLS-DA). Polar acetone, methanol, and non-polar dichloromethane extracts were analyzed separately. &lt;strong&gt;Results and Discussions:&lt;/strong&gt; A total of 135 (12 from acetone, 13 from methanol, and 110 from dichloromethane extracts) compounds were identified in &lt;em&gt;H. caespititium&lt;/em&gt;. An OPLSDA score plot with R&lt;sup&gt;2&lt;/sup&gt; = 0.81 grouped the polar compounds into 2 clusters as phenolic and non-phenolic compounds, while a contribution plot from the score plot then nominated benzene[(methoxymethoxy)]methyl, 4-methyl-2,4-bis(p-hydroxyphenyl)penet- 1-ene, isoeugenol, and 3 4-dihydroxymandelic acid as marker compounds in the polar extracts. In a second plot with R&lt;sup&gt;2&lt;/sup&gt; = 0.67, the corresponding contribution plot accentuated 2-methyl-5- (fur-3-yl) pent-3-en-2-ol, 3,5-dimethyl-4-heptanone, 1,2-benzenedicarboxylic acid, dihexyl-1-(4- methylphenyl)-5(2-dimethyl aminothenyl)-1H-tetrazole, and 3,5-dimethyl-4-heptanone as the marker compounds in the dichloromethane extract. &lt;strong&gt;Conclusion: &lt;/strong&gt;This study recommends the use of the marker compounds as quality standard of raw materials and commercial products containing extracts or other forms of the South African &lt;em&gt;H. caespititium&lt;/em&gt;.&lt;/p&gt;
</style></abstract><issue><style face="normal" font="default" size="100%">2</style></issue><work-type><style face="normal" font="default" size="100%">Research Article</style></work-type><section><style face="normal" font="default" size="100%">486</style></section><auth-address><style face="normal" font="default" size="100%">&lt;p class=&quot;rtejustify&quot;&gt;&lt;strong&gt;Kokoette Bassey&lt;sup&gt;1,&lt;/sup&gt;*, Patience Mamabolo&lt;sup&gt;1&lt;/sup&gt;, Mmamosheledi Mothibe&lt;sup&gt;2&lt;/sup&gt;, Freddy Muganza&lt;sup&gt;3,4&lt;/sup&gt;&lt;/strong&gt;&lt;/p&gt;

&lt;p class=&quot;rtejustify&quot;&gt;&lt;sup&gt;1&lt;/sup&gt;Pharmaceutical Sciences Division, School of Pharmacy, Sefako Makgatho Health Sciences University. Molotlegi Street, Ga-Rankuwa 0204, Pretoria, SOUTH AFRICA.&lt;/p&gt;

&lt;p class=&quot;rtejustify&quot;&gt;&lt;sup&gt;2&lt;/sup&gt;Department of Pharmacology; Faculty of Pharmacy, Rhodes University. Artillery Road, Grahamstown 6139, P. O. Box 94 Grahamstown 6140, SOUTH AFRICA.&lt;/p&gt;

&lt;p class=&quot;rtejustify&quot;&gt;&lt;sup&gt;3&lt;/sup&gt;Bausch Health Pharmaceuticals, Steinbach, Manitoba, CANADA.&lt;/p&gt;

&lt;p class=&quot;rtejustify&quot;&gt;&lt;sup&gt;4&lt;/sup&gt;Providence University College and Theological Seminary, Otterborne, Manitoba, CANADA.&lt;/p&gt;
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