Influence of passion fruit albedo, citric acid, and the pulp/sugar ratio on the quality of banana preserves

• Main Authors: Igor Galvão Silva, Glêndara Aparecida de Souza Martins, Soraia Vilela Borges, Gerson Reginaldo Marques, Itamar Souza Regis
• Format: Article
• Language: English
• Published: Sociedade Brasileira de Ciência e Tecnologia de Alimentos 2012-06-01
• Series: Food Science and Technology
• Subjects: frutas; resíduos; qualidade; conservação
• Online Access: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-20612012000200010&lng=en&tlng=en

The objective of this research was to evaluate the effect of the citric acid concentration, pulp/sugar ratio, and albedo concentration of the passion fruit peel on physical, physiochemical, and sensorial characteristics of the 'Silver' banana preserves. A 2³ factorial design and 3 repetitions in the central point were used. The albedo concentration between 0 and 3% had significant influence on the reduction of the reducing sugars and on the decrease in titratable acidity. The increase in the pulp/sugar ratio exerted a negative effect on the pH and positive on the titratable acidity; the acid addition reduced the non-reducing sugar level. The sensorial evaluation and purchase intention indicated that the incorporation of a maximum of 1.5% albedo in formulations containing 50% pulp and 0.5% citric acid resulted in products with good acceptability in comparison with the formulation in which 60% pulp and an absence of acid or albedo is utilized.