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Abstract:

The color stability of pumpkin (Cucurbita moschata, Duchesne ex Poiret) puree of pH 4.00 and 5.00 containing potassium sorbate (KS), ascorbic acid (AA) or their mixture, packaged in polyethylene and in polyvinyl chloride-polyvinylidene chloride copolymer (PCPC) bags, was analyzed throughout the storage at 25 °C. Color changes were measured through lightness (L), redness (a), yellowness (b). Changes in a and b were mathematically modeled. In general, lightness, redness and yellowness diminished with storage time. The presence of KS diminished color loss of purees packed in PCPC bags and increased the discoloration of purees contained in polyethylene suggesting, in the first case, that KS oxidation diminished the available oxygen protecting carotenoids oxidation, and in the second case, the existence of a coupled oxidation between KS and carotenoids helped by the oxygen presence. Addition of AA to a puree of pH 4.00 containing KS and packed in polyethylene minimized the losses of redness and yellowness; probably as a consequence of the antioxidant action of AA. The increase in pH from 4.00 to 5.00 in the presence of KS significantly minimized color degradation of puree packed in PCPC. From the point of view of improving color stability, a convenient formulation could be a puree of pH 5.00 preserved with KS and packed in PCPC. © 2008 Swiss Society of Food Science and Technology.

Registro:

Documento: Artículo
Título:Color stability of pumpkin (Cucurbita moschata, Duchesne ex Poiret) puree during storage at room temperature: Effect of pH, potassium sorbate, ascorbic acid and packaging material
Autor:Gliemmo, M.F.; Latorre, M.E.; Gerschenson, L.N.; Campos, C.A.
Filiación:Departamento de Industrias, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Ciudad Universitaria, 1428, Argentina
Consejo Nacional de Investigaciones Científicas y Técnicas, Argentina
Palabras clave:Ascorbic; Color stability; Packaging; Pumpkin; Sorbate; Chemical oxygen demand; Color; Food preservation; Ketones; Nonmetals; Optical properties; Organic acids; Oxidation; Oxygen; Packaging materials; Polymers; Potassium; Sulfate minerals; Thermoplastics; Antioxidant action; Ascorbic; Ascorbic acid; Color changing; Color degradation; Color stability; Cucurbita moschata; Packaging; Potassium sorbate; Pumpkin; Room temperatures; Sorbate; Storage time; pH effects; Cucurbita moschata
Año:2009
Volumen:42
Número:1
Página de inicio:196
Página de fin:201
DOI: http://dx.doi.org/10.1016/j.lwt.2008.05.011
Título revista:LWT - Food Science and Technology
Título revista abreviado:LWT - Food Sci. Technol.
ISSN:00236438
CODEN:LBWTA
Registro:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00236438_v42_n1_p196_Gliemmo

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Citas:

---------- APA ----------
Gliemmo, M.F., Latorre, M.E., Gerschenson, L.N. & Campos, C.A. (2009) . Color stability of pumpkin (Cucurbita moschata, Duchesne ex Poiret) puree during storage at room temperature: Effect of pH, potassium sorbate, ascorbic acid and packaging material. LWT - Food Science and Technology, 42(1), 196-201.
http://dx.doi.org/10.1016/j.lwt.2008.05.011
---------- CHICAGO ----------
Gliemmo, M.F., Latorre, M.E., Gerschenson, L.N., Campos, C.A. "Color stability of pumpkin (Cucurbita moschata, Duchesne ex Poiret) puree during storage at room temperature: Effect of pH, potassium sorbate, ascorbic acid and packaging material" . LWT - Food Science and Technology 42, no. 1 (2009) : 196-201.
http://dx.doi.org/10.1016/j.lwt.2008.05.011
---------- MLA ----------
Gliemmo, M.F., Latorre, M.E., Gerschenson, L.N., Campos, C.A. "Color stability of pumpkin (Cucurbita moschata, Duchesne ex Poiret) puree during storage at room temperature: Effect of pH, potassium sorbate, ascorbic acid and packaging material" . LWT - Food Science and Technology, vol. 42, no. 1, 2009, pp. 196-201.
http://dx.doi.org/10.1016/j.lwt.2008.05.011
---------- VANCOUVER ----------
Gliemmo, M.F., Latorre, M.E., Gerschenson, L.N., Campos, C.A. Color stability of pumpkin (Cucurbita moschata, Duchesne ex Poiret) puree during storage at room temperature: Effect of pH, potassium sorbate, ascorbic acid and packaging material. LWT - Food Sci. Technol. 2009;42(1):196-201.
http://dx.doi.org/10.1016/j.lwt.2008.05.011