Open Access

Table 1

Independent variables with corresponding codes.

Treatments code Solvents Ultrasonic time (min)
T1 Ethanol 10
T2 Ethanol 20
T3 Ethanol 30
T4 Methanol 10
T5 Methanol 20
T6 Methanol 30
T7 Water 10
T8 Water 20
T9 Water 30
T11 Essential oil

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