Tristemma hirtum and Five Other Cameroonian Edible Plants with Weak or No Antibacterial Effects Modulate the Activities of Antibiotics against Gram-Negative Multidrug-Resistant Phenotypes

Table 2

Extraction yields and phytochemical composition of the plant extracts.

Plant extracts	Part used	Yields (%)	alk	pol	flav	anthr	tan	tri	ster	sap
Aframomum alboviolaceum	Stem	3.1	+	+	+	+	+	+	+	−
	Leaves	8.7	+	+	+	+	−	+	+	+
Aframomum letestuanum	Leaves	3.7	+	+	+	−	+	+	+	+
Cucurbita pepo	Pericarps	9.1	+	+	+	−	+	+	+	−
Physalis peruviana	Stem	4.05	+	+	−	+	+	+	+	−
Raphia hookeri	Pericarps	5.2	+	+	+	+	+	−	+	+
Tristemma hirtum	Leaves	10.4	−	+	+	+	−	+	+	+

−: absent; +: present. Yield was calculated as the ratio of the mass of the obtained methanol extract/mass of the plant powder. alk: alkaloids; anthr: anthraquinones; flav: flavonoids; pol: polyphenols; sap: saponins; ster: steroids; tan: tannins; tri: triterpenes.