The Chemical Constituents and Biological Activities of Stem Bark Extract of Theobroma Cacao

1
Nwokonkwo, D.C
Nwokonkwo, D.C
2
Nwokonkwo
Nwokonkwo
3
D.C
D.C
4
Okeke
Okeke
5
G.N.
G.N.
1 Ebonyi State University Abakaliki, Nigeria

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GJSFR Volume 14 Issue E4

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The chemical composition of the extract of the stem bark of Theobroma cacao and its biological activity is hereby studied. Dried pulverised stem bark extract of Theobroma cacao was batch extracted with ethanol. This crude ethanol extract was screened for the presence of plant chemicals: the result showed the presence of alkaloid, tannin, saponin, glycoside, phenol, flavonoid and carboxylic acid. Four human pathogens; Escherichia coli, Pseudomonas aeruginosa, Streptococcus pnemoniae and Staphylococcus aureus were used in the test for the biological activity and were discovered to be susceptible to the crude extract. The extract was acidified with concentrated hydrochloric acid (HCl) and extracted with chloroform (CHCl 3 ). The organic layer was basified with 1 M sodium hydroxide (NaOH) solution and the alkaline layer treated with HCl.

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No external funding was declared for this work.

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The authors declare no conflict of interest.

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No ethics committee approval was required for this article type.

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Nwokonkwo, D.C. 2015. \u201cThe Chemical Constituents and Biological Activities of Stem Bark Extract of Theobroma Cacao\u201d. Global Journal of Science Frontier Research - E: Marine Science GJSFR-E Volume 14 (GJSFR Volume 14 Issue E4): .

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GJSFR Volume 14 Issue E4
Pg. 35- 40
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Crossref Journal DOI 10.17406/GJSFR

Print ISSN 0975-5896

e-ISSN 2249-4626

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January 31, 2015

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The chemical composition of the extract of the stem bark of Theobroma cacao and its biological activity is hereby studied. Dried pulverised stem bark extract of Theobroma cacao was batch extracted with ethanol. This crude ethanol extract was screened for the presence of plant chemicals: the result showed the presence of alkaloid, tannin, saponin, glycoside, phenol, flavonoid and carboxylic acid. Four human pathogens; Escherichia coli, Pseudomonas aeruginosa, Streptococcus pnemoniae and Staphylococcus aureus were used in the test for the biological activity and were discovered to be susceptible to the crude extract. The extract was acidified with concentrated hydrochloric acid (HCl) and extracted with chloroform (CHCl 3 ). The organic layer was basified with 1 M sodium hydroxide (NaOH) solution and the alkaline layer treated with HCl.

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The Chemical Constituents and Biological Activities of Stem Bark Extract of Theobroma Cacao

Nwokonkwo
Nwokonkwo
D.C
D.C
Okeke
Okeke
G.N.
G.N.

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