Antimicrobial Compounds from Leaf Extracts of Jatropha curcas, Psidium guajava, and Andrographis paniculata

Table 5

Bacterial count and fungal growth at the end of vase life of Mokara Red orchid flowers in petri plates containing the flower preservative solution as affected by leaf extracts of Jatropha curcas, Psidium guajava, and Andrographis paniculata and 8-hydroxyquinoline citrate (8-HQC).

Treatment	Bacterial count	Fungal growth
	(cfu 10^8 mL^−1)^z	Diameter (mm)
Control, 8-HQC (125 mg/L)	None	None
J. curcas (15 mg/L)	158.00 ± 2.41a	18.45 ± 1.75b
P. guajava (15 mg/L)	75.00 ± 2.59b	25.25 ± 1.33a
A. paniculata (15 mg/L)	37.00 ± 1.64c	27.23 ± 1.49a

2% sucrose and 3% citric acid were added to each flower preservative solution. Data are means ± SE; .
Vase life ended when 30% of flowers appeared unattractive due to bud that remains closed and wilted, petal discoloration and wilting, floret epinasty and drop, and stem yellowing.
^zMeans followed by the same letter within each column are not significantly different by DMRT ().