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EFFECT OF SWEET SOLUTES ON THE QUALITY OF A PUMPKIN PUREE (CUCURBITA MOSCHATA DUCHESNE EX POIRET) PRESERVED BY THE HURDLE TECHNOLOGY

2010; Wiley; Volume: 34; Issue: 6 Linguagem: Inglês

10.1111/j.1745-4549.2009.00435.x

1745-4549

María F. Gliemmo, María E. Latorre, Lía N. Gerschenson, Carmen A. Campos,

Botanical Research and Applications

Journal of Food Processing and PreservationVolume 34, Issue 6 p. 1024-1040 EFFECT OF SWEET SOLUTES ON THE QUALITY OF A PUMPKIN PUREE (CUCURBITA MOSCHATA DUCHESNE EX POIRET) PRESERVED BY THE HURDLE TECHNOLOGY M.F. GLIEMMO, M.F. GLIEMMO Departamento de IndustriasFacultad de Ciencias Exactas y NaturalesUniversidad de Buenos AiresCiudad Universitaria (1428)Ciudad Autónoma de Buenos Aires 1428, Argentina Consejo Nacional de Investigaciones Científicas y Técnicas de la República ArgentinaArgentinaSearch for more papers by this authorM.E. LATORRE, M.E. LATORRE Departamento de IndustriasFacultad de Ciencias Exactas y NaturalesUniversidad de Buenos AiresCiudad Universitaria (1428)Ciudad Autónoma de Buenos Aires 1428, Argentina Agencia Nacional de Promoción Científica y Tecnológica de la República ArgentinaArgentinaSearch for more papers by this authorL.N. GERSCHENSON, L.N. GERSCHENSON Departamento de IndustriasFacultad de Ciencias Exactas y NaturalesUniversidad de Buenos AiresCiudad Universitaria (1428)Ciudad Autónoma de Buenos Aires 1428, Argentina Consejo Nacional de Investigaciones Científicas y Técnicas de la República ArgentinaArgentinaSearch for more papers by this authorC.A. CAMPOS, Corresponding Author C.A. CAMPOS Departamento de IndustriasFacultad de Ciencias Exactas y NaturalesUniversidad de Buenos AiresCiudad Universitaria (1428)Ciudad Autónoma de Buenos Aires 1428, Argentina Consejo Nacional de Investigaciones Científicas y Técnicas de la República ArgentinaArgentina TEL/FAX: +54-11-45763366; EMAIL: carmen@di.fcen.uba.arSearch for more papers by this author M.F. GLIEMMO, M.F. GLIEMMO Departamento de IndustriasFacultad de Ciencias Exactas y NaturalesUniversidad de Buenos AiresCiudad Universitaria (1428)Ciudad Autónoma de Buenos Aires 1428, Argentina Consejo Nacional de Investigaciones Científicas y Técnicas de la República ArgentinaArgentinaSearch for more papers by this authorM.E. LATORRE, M.E. LATORRE Departamento de IndustriasFacultad de Ciencias Exactas y NaturalesUniversidad de Buenos AiresCiudad Universitaria (1428)Ciudad Autónoma de Buenos Aires 1428, Argentina Agencia Nacional de Promoción Científica y Tecnológica de la República ArgentinaArgentinaSearch for more papers by this authorL.N. GERSCHENSON, L.N. GERSCHENSON Departamento de IndustriasFacultad de Ciencias Exactas y NaturalesUniversidad de Buenos AiresCiudad Universitaria (1428)Ciudad Autónoma de Buenos Aires 1428, Argentina Consejo Nacional de Investigaciones Científicas y Técnicas de la República ArgentinaArgentinaSearch for more papers by this authorC.A. CAMPOS, Corresponding Author C.A. CAMPOS Departamento de IndustriasFacultad de Ciencias Exactas y NaturalesUniversidad de Buenos AiresCiudad Universitaria (1428)Ciudad Autónoma de Buenos Aires 1428, Argentina Consejo Nacional de Investigaciones Científicas y Técnicas de la República ArgentinaArgentina TEL/FAX: +54-11-45763366; EMAIL: carmen@di.fcen.uba.arSearch for more papers by this author First published: 27 August 2010 https://doi.org/10.1111/j.1745-4549.2009.00435.xCitations: 3Read the full textAboutPDF ToolsRequest permissionExport citationAdd to favoritesTrack citation ShareShare Give accessShare full text accessShare full-text accessPlease review our Terms and Conditions of Use and check box below to share full-text version of article.I have read and accept the Wiley Online Library Terms and Conditions of UseShareable LinkUse the link below to share a full-text version of this article with your friends and colleagues. Learn more.Copy URL Share a linkShare onFacebookTwitterLinked InRedditWechat Abstract ABSTRACT The effect of glucose and xylitol on the quality of a pumpkin puree preserved by the hurdle technology was studied. It was demonstrated that the addition of glucose or xylitol to depress water activity (Aw) to 0.98 was necessary to assure 3 weeks of microbial stability at 25C of a pH 4.00 pumpkin puree, containing potassium sorbate and submitted to vapor heat treatment. A decrease in a and b color parameters was observed during storage for both humectants. However, the use of a low oxygen permeability packaging such as polyvinyl chloride-polyvinylidene chloride copolymer instead of polyethylene protected the color. From a rheological point of view, xylitol diminished yield stress and consistency coefficient independently of storage time. The results obtained emphasize the advantage of the use of glucose as well as the importance of an appropriate choice of solutes to depress Aw in order to improve the quality of pumpkin puree. PRACTICAL APPLICATIONS Fresh pumpkins are very sensitive to microbial spoilage and to physiological and biochemical changes; thus, a preservation process is necessary to extend shelf life. In this study, a development of a minimally processed pumpkin puree was proposed and the color stability and rheological behavior were evaluated to improve the quality. The results obtained demonstrated that the addition of glucose (10.00% w/w) to a pH 4.00 pumpkin puree containing potassium sorbate (0.0120% w/w), steam cooked and packed in polyvinyl chloride-polyvinylidene chloride copolymer bags, assures the microbiological and color stability and prevents changes in the rheological behavior during a storage of 3 weeks at 25C. Citing Literature Volume34, Issue6December 2010Pages 1024-1040 RelatedInformation