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Table 2 Extraction yields, aspects and phytochemical composition of the plant extracts

From: In Vitro antibacterial and antibiotic-potentiation activities of four edible plants against multidrug-resistant gram-negative species

Scientific names

Part used

Yield* (%)

Physical aspect

Secondary metabolites

 
    

Alkaloids

Phenols

Tannins

Triterpenes

Steroids

Flavonoids

Anthraquinones

Anthocyanins

Saponins

Piper nigrum

Fruits

13.18

Brown sticky paste

+

+

+

-

-

+

+

-

-

Syzygium aromaticum

Fruits

9.49

Dark brown paste

+

-

-

-

-

+

-

-

-

Telfairia occidentalis

Leaves

11.58

Brown sticky paste

+

+

+

-

-

+

-

+

-

Vernonia amygdalina

Leaves

7.16

Green dark paste

+

+

+

-

+

+

-

-

+

  1. (+): Present; (−): Absent; *the yield was calculated as the ratio of the mass of the obtained methanol extract/mass of the plant powder.