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5-Hydroxymethylfurfural formation and color change in lactose-hydrolyzed Dulce de leche

Published online by Cambridge University Press:  11 December 2019

Júlia d'Almeida Francisquini
Affiliation:
Department of Food Technology, Federal University of Viçosa (UFV), 36570-900, Viçosa, MG, Brazil
Júlia Rocha
Affiliation:
Department of Food Technology, Federal University of Viçosa (UFV), 36570-900, Viçosa, MG, Brazil
Evandro Martins
Affiliation:
Department of Food Technology, Federal University of Viçosa (UFV), 36570-900, Viçosa, MG, Brazil
Rodrigo Stephani
Affiliation:
Department of Chemistry, Federal University of Juiz de Fora (UFJF), 36036-330, Juiz de Fora, MG, Brazil
Paulo Henrique Fonseca da Silva
Affiliation:
Department of Nutrition, Federal University of Juiz de Fora (UFJF), 36036-330, Juiz de Fora, MG, Brazil
Isis Rodrigues Toledo Renhe
Affiliation:
Candido Tostes Dairy Institute (EPAMIG) – Rua Tenente Luís de Freitas, 116, Santa Terezinha, 36045-560, Juiz de Fora, MG, Brazil
Ítalo Tuler Perrone*
Affiliation:
Department of pharmaceutical sciences, Federal University of Juiz de Fora (UFJF), Campus Universitário – Rua José Lourenço Kelmer, s/n – São Pedro, 36036-330, Juiz de Fora, MG, Brazil.
Antônio Fernandes de Carvalho
Affiliation:
Department of Food Technology, Federal University of Viçosa (UFV), 36570-900, Viçosa, MG, Brazil
*
Author for correspondence: Ítalo Tuler Perrone, Email: [email protected]

Abstract

The work described in this Research Communication concerns the production of Dulce de leche (DL), that is a traditional product from South America obtained by concentration. Maillard reaction (MR) products are mainly responsible for the formation of color and flavor in this product. Lactose-hydrolyzed products have been developed to supply consumer demand, but this hydrolysis may affect the flavor, color, taste, texture and even some nutritional aspects of the product. We studied the influence of different levels of lactose-hydrolysis, sucrose addition and initial pH on the development of MR, appraised by the determination of 5-hydroxymethylfurfural (HMF). A process simulator with multi-monitoring system was used to produce 15 DL. Box-Behnken 33 experimental design was applied for the three factors: pH, lactose-hydrolysis level and sucrose concentration. Lipids, protein, ashes, carbohydrates, water activity, dissolved solids, colorimetric analysis and HMF (free and total) are among the physicochemical attributes and MR indicators analyzed in this work. The products showed significant differences in composition but all the values were in agreement with the literature. Moreover, higher levels of lactose hydrolysis and higher pH presented a direct relation with the development of MR, observed by an increase in coloration (lower luminosity) and more formation of HMF, both free and total. The present study expands the knowledge about DL spread made of lactose-hydrolyzed milk, allowing the food industries to produce a lactose free DL with nutritional and sensory characteristics closer to the traditional product.

Type
Research Article
Copyright
Copyright © Hannah Dairy Research Foundation 2019

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