Effect of extraction temperature on the yield and quality of
pectin are presented in Table 6. Extraction of pectinwas carried out
at different temperatures keeping peel to extractant ratio of 1:30
(w/v), pH of extractant 2.0 and extraction period of 60 min. The
extraction was carried out at 70, 80, 90 and 98.7 C.
The yield of pectin increased significantly with the increase in
temperature of extraction from 70 C to 98.7 C. The total yield of
pectin was significantly less (4.39 g/100 g of dried peels) at 70 C.
As the extraction temperature increased the yield of pectin also
increased. The maximum pectin yield of 9.22 g/100 g was observed
at 98.7 C in first extraction and 5.6 g/100 g in the second extraction
(Table 6). The total yield of pectin from first and second extraction
was 14.82 g/100 g dried peel when extraction temperature was
98.7 C. Thus the yield of pectin was maximum when extraction
temperaturewas 98.7 C with two extractions. Similar observations
were reported for dried peels of mango var. Totapuri, Langra and
Chausa by Sudhakar Rao and Maini (1999).