Artículos de revistas
Application Of Lipase And Monoglyceride In Fiber Enriched Pan Bread [aplicação De Lipase E Monoglicerídeo Em Pão De Forma Enriquecido Com Fibras]
Registro en:
Ciencia E Tecnologia De Alimentos. , v. 28, n. 1, p. 182 - 192, 2008.
1012061
10.1590/S0101-20612008000100027
2-s2.0-45849128678
Autor
Gandra K.M.
Del Bianchi M.
Godoy V.P.
Queiroz F.P.C.
Steel C.J.
Institución
Resumen
In this work, the application of lipase and monoglyceride in fiber enriched pan bread was studied, to verify the possibility of substituting the emulsifier by the enzyme. Initially, the main raw materials (flour and wheat bran) were characterized. The pan breads were produced using the straight dough method. A central composite rotational design was used, with two independent variables: i) lipase dosage; and ii) monoglyceride dosage and, in parallel, a control test was carried out (without the addition of lipase and monoglyceride) for comparison. The dependent variables or responses were the quality characteristics of the breads: i) specific volume; ii) sensory acceptance (appearance, texture, aroma and taste); and iii) shelf life evaluated by crumb moisture and firmness after one, four and seven days from baking. Within the ranges studied, it was possible to verify that only crumb moisture on the fourth and seventh days after processing was influenced by the variation of the lipase and monoglyceride dosages. In the sensory evaluation, it was observed that the average scores attributed to the control breads were lower than the lowest average of the experimental design trials, except for taste and aroma. As it was not possible to obtain mathematical models for all the responses, Assays 5 (1% monoglyceride), 7 (25 ppm lipase) and 9 (25 ppm lipase and 1% monoglyceride) of the experimental design, and the control test, were selected for the evaluation of the results by analysis of variance. In the conditions used and for the dosages of lipase (0 to 50 ppm) and monoglyceride (0 to 2%) used, the possibility to substitute monoglyceride by lipase in fiber enriched pan bread was verified. 28 1 182 192 (1995) AMERICAN ASSOCIATION OF CEREAL CHEMISTS. 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