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Recubrimiento comestible de pectina de tejocote y cera de candelilla en la conservación de hongo seta (Pleurotusostreatus) mínimamente procesado / María Azalia Lozano Grande

By: Contributor(s): Material type: TextLanguage: Spanish Summary language: English Chapingo, México : El autor, 2014Description: 125 hojas : ilustraciones, gráficas, tablas, fotos + 1 CD-ROMContent type:
  • texto
Media type:
  • no mediado
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  • volumen
Uniform titles:
  • Edible coating of tejocote pectin and candelilla wax in conservation of minimally processed mushroom (Pleurotus ostreatus). Español
Subject(s): Online resources: Dissertation note: Tesis (Maestro en Ciencias en Ciencia y Tecnología Agroalimentaria) -- UACh. Departamento de Ingeniería Agroindustrial, 2014 Abstract: El hongo Pleurotus ostreatus es un alimento muy nutritivo con gran potencial de comercializacion, sin embargo esta limitado por ser altamente perecedero y la poca informacion de otras tecnologias que incrementen la vida util. El objetivo de esta investigacion fue desarrollar y caracterizar peliculas de pectina de tejocote (PT55) o pectina comercial (PC) con cera de candelilla, evaluando propiedades viscoelasticas, mecanicas, de barrera, y su uso como recubrimiento para el hongo seta. El tipo y concentracion de pectina afecto significativamente (P.0.05) las propiedades evaluadas. El recubrimiento con 2% de PT55 y 0.1 CC produjo baja perdida de peso (1.2%), mayor firmeza de tejido (3N), mayor luminosidad (L*78), menor produccion de metabolitos anaerobios (6 Mmol/ml), y baja concentracion de CO2 en el envase (2%).Los recubrimientos con PT55 en comparacion con PC fueron efectivos, prolongando la vida util del hongo por 20 días. --Abstract: The fungus Pleurotus ostreatus is a very nutritious food with great marketing potential however it is limited by being a highly perishable product and little information of the other technologies that increase its lifetime. The objective of this research was to develop and characterize films of tejocote pectin (PT55) or commercial pectin (PC) with candelilla wax, which were evaluated by viscoelastic, mechanical and barrier properties, and their use as a coating for the mushroom. The type and concentration of pectin was significant (P=0.05) in evaluated properties. The coating with 2 % PT55 and 0.1 CC wax was the one which produced low weight loss (1.2 %) firmer tissue (3N), more luminosity (L 78), decreased production of anaerobic metabolites (6 mmol/ml), and low concentration of CO2 in the package (2%). The PT55 coatings compared with the PC control were effective to preserve fungus extending useful lifetime for 20 days.
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Cover image Item type Current library Home library Collection Shelving location Call number Materials specified Vol info URL Copy number Status Notes Date due Barcode Item holds Item hold queue priority Course reserves
Tesis digital Ingenieria Agroindustrial En línea Tesis digitales de Maestría Available 1201008863
CD Ingenieria Agroindustrial Tesis Tesis L693 2014 (Browse shelf(Opens below)) Ej. 2 Available (Préstamo 5 días) 1101008864
CD Ingenieria Agroindustrial Tesis Tesis L693 2014 (Browse shelf(Opens below)) Ej. 1 Available (Préstamo interno) 1101008863

El CD contiene reporte y artículo.

Tesis (Maestro en Ciencias en Ciencia y Tecnología Agroalimentaria) -- UACh. Departamento de Ingeniería Agroindustrial, 2014

Incluye bibliografías

El hongo Pleurotus ostreatus es un alimento muy nutritivo con gran potencial de comercializacion, sin embargo esta limitado por ser altamente perecedero y la poca informacion de otras tecnologias que incrementen la vida util. El objetivo de esta investigacion fue desarrollar y caracterizar peliculas de pectina de tejocote (PT55) o pectina comercial (PC) con cera de candelilla, evaluando propiedades viscoelasticas, mecanicas, de barrera, y su uso como recubrimiento para el hongo seta. El tipo y concentracion de pectina afecto significativamente (P.0.05) las propiedades evaluadas. El recubrimiento con 2% de PT55 y 0.1 CC produjo baja perdida de peso (1.2%), mayor firmeza de tejido (3N), mayor luminosidad (L*78), menor produccion de metabolitos anaerobios (6 Mmol/ml), y baja concentracion de CO2 en el envase (2%).Los recubrimientos con PT55 en comparacion con PC fueron efectivos, prolongando la vida util del hongo por 20 días. --

The fungus Pleurotus ostreatus is a very nutritious food with great marketing potential however it is limited by being a highly perishable product and little information of the other technologies that increase its lifetime. The objective of this research was to develop and characterize films of tejocote pectin (PT55) or commercial pectin (PC) with candelilla wax, which were evaluated by viscoelastic, mechanical and barrier properties, and their use as a coating for the mushroom. The type and concentration of pectin was significant (P=0.05) in evaluated properties. The coating with 2 % PT55 and 0.1 CC wax was the one which produced low weight loss (1.2 %) firmer tissue (3N), more luminosity (L 78), decreased production of anaerobic metabolites (6 mmol/ml), and low concentration of CO2 in the package (2%). The PT55 coatings compared with the PC control were effective to preserve fungus extending useful lifetime for 20 days.

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