Document Detail

Optimization of extraction of high-ester pectin from passion fruit peel (Passiflora edulis flavicarpa) with citric acid by using response surface methodology.
MedLine Citation:
PMID:  18083550     Owner:  NLM     Status:  MEDLINE    
A central composite design was employed to optimize the extraction of pectin with citric acid. The independent variables were citric acid concentration (0.086-2.91% w/v) and extraction time (17-102 min). The combined effect of these variables on the degree of esterification was investigated. Results have shown that the generated regression models adequately explained the data variation and significantly represented the actual relationship between the independent variables and the responses. Besides that, the citric acid concentration was the most important factor to affect the degree of esterification, as it exerted a significant influence on the dependent variable. Lower citric acid concentration increased the pectin degree of esterification. The surface response showed the relationships between the independent variables, and thus responses were generated. Through this surface, the satisfactory condition of 0.086% w/v citric acid for 60 min was established for extraction of high-ester yellow passion fruit pectin.
Eloi Sa Rovaris Pinheiro; Iolanda M D A Silva; Luciano V Gonzaga; Edna R Amante; Reinaldo F Teófilo; Márcia M C Ferreira; Renata D M C Amboni
Publication Detail:
Type:  Journal Article     Date:  2008-02-20
Journal Detail:
Title:  Bioresource technology     Volume:  99     ISSN:  0960-8524     ISO Abbreviation:  Bioresour. Technol.     Publication Date:  2008 Sep 
Date Detail:
Created Date:  2008-05-12     Completed Date:  2008-08-13     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  9889523     Medline TA:  Bioresour Technol     Country:  England    
Other Details:
Languages:  eng     Pagination:  5561-6     Citation Subset:  IM    
Departamento de Ciências e Tecnologia de Alimentos, Centro de Ciências Agrárias, Universidade Federal de Santa Catarina, Rod. Admar Gonzaga, 1346, Itacorubi, 88034-001 Florianópolis, SC, Brazil.
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MeSH Terms
Citric Acid / analysis
Indicators and Reagents
Passiflora / chemistry*
Pectins / chemistry,  isolation & purification*
Seeds / chemistry*
Surface Properties
Reg. No./Substance:
0/Indicators and Reagents; 0/Pectins; 77-92-9/Citric Acid; 9000-69-5/pectin

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