Chemical differentiation of Boswellia sacra and Boswellia carterii essential oils by gas chromatography and chiral gas chromatography–mass spectrometry

► Differentiation of Boswellia sacra and Boswellia carterii frankincense species. ► Chiral GC–MS of monoterpenes. ► Optical rotation of frankincense essential oils. ► Enantiomeric ratios of chiral compounds. Major botanical and scientific references currently identify two species of frankincense, Bo...

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Veröffentlicht in:Journal of Chromatography A 2012-10, Vol.1261, p.158-163
Hauptverfasser: Woolley, Cole L., Suhail, Mahmoud M., Smith, Brett L., Boren, Karen E., Taylor, Lindsey C., Schreuder, Marc F., Chai, Jeremiah K., Casabianca, Hervé, Haq, Sadqa, Lin, Hsueh-Kung, Al-Shahri, Ahmed A., Al-Hatmi, Saif, Young, D. Gary
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container_title Journal of Chromatography A
container_volume 1261
creator Woolley, Cole L.
Suhail, Mahmoud M.
Smith, Brett L.
Boren, Karen E.
Taylor, Lindsey C.
Schreuder, Marc F.
Chai, Jeremiah K.
Casabianca, Hervé
Haq, Sadqa
Lin, Hsueh-Kung
Al-Shahri, Ahmed A.
Al-Hatmi, Saif
Young, D. Gary
description ► Differentiation of Boswellia sacra and Boswellia carterii frankincense species. ► Chiral GC–MS of monoterpenes. ► Optical rotation of frankincense essential oils. ► Enantiomeric ratios of chiral compounds. Major botanical and scientific references currently identify two species of frankincense, Boswellia carterii and Boswellia sacra, as being synonymous. We evaluated the Somalian (B. carterii) and Omani/Yemeni (B. sacra) species by chemical analyses to determine if there were any minor or major differences between the two species of frankincense. Components identified with their average percent for B. sacra are α-thujene (0.6%), α-pinene (68.2%), camphene (2.1%), sabinene (2.9%), β-pinene (2.0%), myrcene (0.7%), limonene+β-phellandrene (6.2%). Components identified with their average percent for B. carterii are α-thujene (7.9%), α-pinene (37.3%), camphene (0.8%), sabinene (4.9%), β-pinene (1.8%), myrcene (7.3%), limonene+β-phellandrene (14.4%). Initially, GC–MS analysis did not reveal major statistical differences. However, optical rotation values, B. Sacra (+30.1°) and B. carterii (−13.3°), demonstrated a greater significant difference. Enantiomeric ratio (+)/(−) values of α-pinene for B. sacra and B. carterii are 8.24 and 0.68, respectively, were also calculated aiding our conclusion that B. sacra and B. carterii are not synonymous but rather two distinct and individual frankincense species.
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Components identified with their average percent for B. sacra are α-thujene (0.6%), α-pinene (68.2%), camphene (2.1%), sabinene (2.9%), β-pinene (2.0%), myrcene (0.7%), limonene+β-phellandrene (6.2%). Components identified with their average percent for B. carterii are α-thujene (7.9%), α-pinene (37.3%), camphene (0.8%), sabinene (4.9%), β-pinene (1.8%), myrcene (7.3%), limonene+β-phellandrene (14.4%). Initially, GC–MS analysis did not reveal major statistical differences. However, optical rotation values, B. Sacra (+30.1°) and B. carterii (−13.3°), demonstrated a greater significant difference. 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Gary</creatorcontrib><title>Chemical differentiation of Boswellia sacra and Boswellia carterii essential oils by gas chromatography and chiral gas chromatography–mass spectrometry</title><title>Journal of Chromatography A</title><addtitle>J Chromatogr A</addtitle><description>► Differentiation of Boswellia sacra and Boswellia carterii frankincense species. ► Chiral GC–MS of monoterpenes. ► Optical rotation of frankincense essential oils. ► Enantiomeric ratios of chiral compounds. Major botanical and scientific references currently identify two species of frankincense, Boswellia carterii and Boswellia sacra, as being synonymous. We evaluated the Somalian (B. carterii) and Omani/Yemeni (B. sacra) species by chemical analyses to determine if there were any minor or major differences between the two species of frankincense. Components identified with their average percent for B. sacra are α-thujene (0.6%), α-pinene (68.2%), camphene (2.1%), sabinene (2.9%), β-pinene (2.0%), myrcene (0.7%), limonene+β-phellandrene (6.2%). Components identified with their average percent for B. carterii are α-thujene (7.9%), α-pinene (37.3%), camphene (0.8%), sabinene (4.9%), β-pinene (1.8%), myrcene (7.3%), limonene+β-phellandrene (14.4%). Initially, GC–MS analysis did not reveal major statistical differences. However, optical rotation values, B. Sacra (+30.1°) and B. carterii (−13.3°), demonstrated a greater significant difference. 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Gary</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Chemical differentiation of Boswellia sacra and Boswellia carterii essential oils by gas chromatography and chiral gas chromatography–mass spectrometry</atitle><jtitle>Journal of Chromatography A</jtitle><addtitle>J Chromatogr A</addtitle><date>2012-10-26</date><risdate>2012</risdate><volume>1261</volume><spage>158</spage><epage>163</epage><pages>158-163</pages><issn>0021-9673</issn><eissn>1873-3778</eissn><abstract>► Differentiation of Boswellia sacra and Boswellia carterii frankincense species. ► Chiral GC–MS of monoterpenes. ► Optical rotation of frankincense essential oils. ► Enantiomeric ratios of chiral compounds. Major botanical and scientific references currently identify two species of frankincense, Boswellia carterii and Boswellia sacra, as being synonymous. We evaluated the Somalian (B. carterii) and Omani/Yemeni (B. sacra) species by chemical analyses to determine if there were any minor or major differences between the two species of frankincense. Components identified with their average percent for B. sacra are α-thujene (0.6%), α-pinene (68.2%), camphene (2.1%), sabinene (2.9%), β-pinene (2.0%), myrcene (0.7%), limonene+β-phellandrene (6.2%). Components identified with their average percent for B. carterii are α-thujene (7.9%), α-pinene (37.3%), camphene (0.8%), sabinene (4.9%), β-pinene (1.8%), myrcene (7.3%), limonene+β-phellandrene (14.4%). Initially, GC–MS analysis did not reveal major statistical differences. However, optical rotation values, B. Sacra (+30.1°) and B. carterii (−13.3°), demonstrated a greater significant difference. Enantiomeric ratio (+)/(−) values of α-pinene for B. sacra and B. carterii are 8.24 and 0.68, respectively, were also calculated aiding our conclusion that B. sacra and B. carterii are not synonymous but rather two distinct and individual frankincense species.</abstract><cop>Netherlands</cop><pub>Elsevier B.V</pub><pmid>22835693</pmid><doi>10.1016/j.chroma.2012.06.073</doi><tpages>6</tpages><orcidid>https://orcid.org/0000-0002-1207-829X</orcidid></addata></record>
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subjects alpha-pinene
Analytical chemistry
beta-pinene
Boswellia - chemistry
Boswellia carterii
Boswellia sacra
camphene
chemical analysis
Chemical Sciences
Chirality
Chromatography, Gas
essential oils
Frankincense
gas chromatography-mass spectrometry
Gas Chromatography-Mass Spectrometry - methods
GC–MS
myrcene
Oils, Volatile - analysis
Oils, Volatile - chemistry
Oman
Optical rotation
sabinene
Somalia
Stereoisomerism
title Chemical differentiation of Boswellia sacra and Boswellia carterii essential oils by gas chromatography and chiral gas chromatography–mass spectrometry
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