High-Intensity Ultrasound-Assisted Extraction of Pectin from Mango Wastes at Different Maturity

Table 2

Analysis of chemical components of pectin extracted from mango peel after 20 min.

Ultrasound frequency	37 kHz			80 kHz
Maturity stage	0	2	4	0	2	4
Ash (%)
Free acidity (meq/g)
Methoxy (%)
Anhydrous galacturonic acid (%)