temperature to conclude effective extraction at the boil.
Therefore, it was desirable to find out whether applying
power ultrasonic will provide additional energy and thus
lower the temperature needed for dye extraction.
Expectedly, the extractability was found to increase as
the temperature increases up to 70 C, thereafter
a plateau started to appear up to 80 C as shown in
Fig. 5. This behavior reflects the additional enhancing
effect due to power ultrasonic that provides easy,
efficient route for dye extraction without the need to
boil the water as heating may lower the brightness of the
extracted dye. Similar results of ultrasonic dye extraction
using other natural dyes have been reported