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Table 2 Extraction yields and phytochemical composition of the studied plants

From: Antibiotic-potentiation activities of four Cameroonian dietary plants against multidrug-resistant Gram-negative bacteria expressing efflux pumps

Extract Capsicum frutescens Brassica oleacera var. butyris Brassica oleacera var. italica Basilicum polystachyon
Yield* (%) 7.22% 12.18% 7.31% 8.61%
Physical aspect Oily brown and viscous Oily brown and viscous Oily brown and viscous Compact
Alkaloids + + + +
Anthocyanins - - - -
Anthraquinones - - - -
Flavonoids + + + +
Phenols + + + +
Coumarins - - - +
Tannins - + + -
Triterpenes + + + +
Sterols + + + +
Saponins - + - +
  1. (+): Present; (-): Absent; *yield calculated as the ratio of the mass of the obtained methanol extract/mass of the plant powder.