Table 3. Thermal stability of Paeonia lactiflora seed extract

Concentrations (mg/disc)	Clear zone (mm)1) on plate
	Phytophthora cactorum
	No heat	121°C, 15 min
0.05	-2)	-
0.1	-	-
0.25	9.31±0.323)	8.23±0.26
0.5	11.86±0.34	10.13±0.58
1	14.33±0.98	12.75±1.13
1.5	16.14±0.56	14.07±0.88
2	17.86±1.03	16.24±0.78
2.5	18.80±1.01	17.41±0.75

Zone of inhibition showing no growth surrounding 8 mm filter paper disc saturated with 50 μL of test sample.
No inhibition zone was formed.
Standard error of three experiments.