Plant constituents Plant extract
  Oreosyce africana (leaves) Piper capense (fruits)
Alkaloids + +
Phenols + +
Tannins - -
Phytosterols + -
Triterpenes + -
Flavonoids + +
Saponins + +
Glycosides + +
Phenolic glycoside + -
Cardiac glycosides + +
Free anthraquinone - +
Anthranoids - -
Chromophers + +
Protein and amino acid - -
Key: + = present; - = absent
Table 6: Preliminary phytochemical screening results for Oreosyce africana and Piper capense crude extracts.