Extraction of Pectin From Apple Pomace
Maria Helene Canteri-Schemin1
, Heloísa Cristina Ramos Fertonani2
, Nina Waszczynskyj3
and Gilvan Wosiacki2*
1Centro Federal de Educação Tecnológica do Paraná; Unidade de Ponta Grossa; Coordenação de Alimentos;
Ponta Grossa - PR - Brazil; 2 Universidade Estadual de Ponta Grossa; Departamento de Engenharia de Alimentos;
Av. Carlos Cavalcanti, 4748; 84030-900; Ponta Grossa - PR - Brazil; 3Universidade Federal do Paraná;
Departamento de Engenharia Química; Pós-Graduação em Tecnologia de Alimentos; Curitiba - PR - Brazil.
ABSTRACT
As apple-processing units are now in expansion in Brazil, industrial by-products like pomace play an important role
in pectin manufacture. The objective of this article was to determine a pratical follow-up to the extraction of pectin
from apple pomace and to characterize it in a laboratory, on a small scale, aiming at establishing the optimum
conditions for acid extraction. The highest yields were obtained when [1]apple pomace was dried and ground to
obtain an apple flour to be used as raw material, [2] citric or nitric acids were used and [3] when the citric acid
concentration was 6.2 g/100 ml and the time of reaction was 153 minutes. The apple variety in itself was not
significant in pectin yield. The degree of esterification (DE = 68.84 %) of the product obtained, as well as its
physical looks, show the success of pectin extraction.