Cadmium Toxicity Affects Phytochemicals and Nutrient Elements Composition of Lettuce (Lactuca sativa L.)

Table 2

Effect of cadmium concentration on free radical scavenging assay (DPPH) and ferric reducing antioxidant power assay (FRAP), total flavonoids, and total phenolics in lettuce.

Treatment	DPPH scavenging (%)	FRAP assay (%)	Total flavonoids (mg CE/g)	Total phenolic (mg GAE/g)
Variety
BBL	67.53b	63.26b	4.34b	2.71b
Italian 167	82.30a	74.22a	5.55a	4.57a
Significance
Cadmium concentration (mg/L)
0	69.31d	63.31d	1.05e	1.20e
3	71.04d	65.25d	1.93d	1.85d
6	73.18c	68.37c	4.91c	3.55c
9	76.82b	71.12b	7.57b	5.04b
12	84.24a	75.63a	9.26a	6.57a
Significance
Interaction
Variety Cd	ns	ns	ns

Significant at 5%; highly significant at 1%; ns = not significant. Values within a column with the same letters are not significantly different (), means separation by LSD, 5%.