Table 5.

Endotoxin per unit of surface area of cucumber and tomato plants and other plant materials

Plant material	n	Endotoxin ng cm−2 surface
		Median	Range
Cucumber
Old leaves	2	956a	678–1233
Young leaves	2	2295a	1905–2685
Tomato
Young leaves	5	16a,b,c	3.4–7440
Straw
Barley	5	262b	127–645
Pot plant leaves
Euphorbia pulcherrina	2	3.5c	2.8–4.2
Kalanchoë blossfeldiana	2	4.3c	3.0–5.6
Grassula aborescensi	2	32c,b	24–40
Ficus bejamin	2	4.1c	3.2–5.0
Sansevieria trifasciata	2	228a,b	195–260

Median endotoxin concentrations per unit of area followed by the same letter are not statistically different. The four cucumber leaf samples are considered as four repeats (n = 4) in the statistical analysis.