Fig 5. Characterisation of levels of bioactives in fruit of Rubus sp. var Lochness in green, red and black fruit of inoculated (500 mL of 107c.f.u.mL-1 of P.fluorescens N21.4 every two weeks until production finished) and control plants.
A) Total phenolic content expressed as mg of gallic acid equivalents (GAE) per 100 g FW; B) Total flavonoid and proanthocyanin content expressed as mg catechin equivalents (CE) per 100 g FW. C) Total anthocyanin contents expressed as mg of cyanidin-3-glucoside equivalents (CGE) per 100 g FW; D) Scavenging activities (EC50) of the DPPH radical. The EC50 values represent the volume of extract required to reduce the absorbance of the DPPH radical by half. Data represent the mean ± SE. Lowercase letters indicate the statistical significance between treatments and controls according to the LSD test (p ≤ 0.05) (SE values are from 3 independent measurements of fruit from 60 different plants).