Data/hora: 09/06/2024 16:51:27

Provedor de dados: | 52
País: | Brazil
Título: | Extraction model of low methoxyl pectin from apple pomace effects of acid concentration and time on the process and the product
Autores: | Fertonani,Heloísa Cristina Ramos; Scabio,Ardalla; Carneiro,Eliana Beleski Borba; Schemim,Maria Helene Canteri; Nogueira,Alessandro; Wosiacki,Gilvan.
Data: | 2009-02-01
Ano: | 2009
Palavras-chave: | Apple; Pectin; Extraction; LMP; Nitric acid.
Resumo: | In Brazil, one of the top apple producing countries in the world, apple processing is an increasing activity, with pomace as the main by-product. To extract pectin from pomace, factors affecting process and product should be studied for optimization. A model to produce LMP directly from dried apple pomace was established observing the effects of HNO3 concentration and the time of reaction at 97ºC, analyzed from a statistical and practical point of view. The model for gravimetric yield (R² =0.9834) predicts the highest value of 20.07 g/100 g (126 mM; 14.07 min) of a pectin with a degree of esterification of 48.49%. The model for degree of esterification of extracted pectin (R²= 0.9797) predicts the lowest value of 43.73% (200 mM; 10.07 min) with a yield of 16.77g/100 g. The results using the central coordinates (100 mM; 10 min) for gravimetric yield were 19.01 g/100 g and for the degree of esterification, 50.79%.
Tipo: | Info:eu-repo/semantics/article
Idioma: | Inglês
Identificador: | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132009000100023
Editor: | Instituto de Tecnologia do Paraná - Tecpar
Relação: | 10.1590/S1516-89132009000100023
Formato: | text/html
Fonte: | Brazilian Archives of Biology and Technology  v.52 n.1 2009
Fonte: | info:eu-repo/semantics/openAccess