CBL - Campus del Baix Llobregat

Projecte llegit

Títol: Aplicación de absorbentes de etileno a escala doméstica: Estudio de la vida útil y calidad de frutas y verduras frescas

Estudiant que ha llegit aquest projecte:

Tutor/Cotutor: ACHAERANDIO PUENTE, MARIA ISABEL

Departament: DEAB

Títol: Aplicación de absorbentes de etileno a escala doméstica: Estudio de la vida útil y calidad de frutas y verduras frescas

Data inici oferta: 03-02-2020      Data finalització oferta: 03-10-2020

Estudis d'assignació del projecte:
    GR ENG ALIMENT 2016

Lloc de realització:
EEABB

Paraules clau:
Etileno, envasado activo, permanganato de potasio, vegetales, post-cosecha

Descripció del contingut i pla d'activitats:
En este TFG se estudiará la aplicación de dos sitemas de absorbedores de etileno en la vida útil de frutas y verduras.
El primer sitema estudiará adsorbedores integrados en un equipo de refrigeración doméstico(nevera), mientras que en el segundo el sistema utilizado serán bolsas adsorbedoras individuales para envases reutilizables.
El objetivo será determinar el efecto de estos sistemas en la calidad de frutas y verduras de diferentes climaterio e intensidades respiratorias, para estudiar la viabilidad a nivel industrial de los propotipos ensayados.

Overview (resum en anglès): Currently, there is a tendency to extend the shelf life of vegetables and maintain their initial quality for a longer period of time. Both of these factors are affected by ethylene, which can cause unwanted changes in the appearance, texture and taste of fruits and vegetables. To avoid this, ethylene scavengers are used.
The objective of this study is to evaluate the efficiency of ethylene scavengers made by Bioconservación S.A. (based on KMnO4) in two systems, one integrated in refrigerators and the other in reusable containers. To do so, quality parameters were studied in climacteric fruits, non-climacteric fruits and vegetables. These parameters were: appearance and loss of weight in both systems, and firmness, total soluble solids and pH in the integrated system in refrigerators.
The results obtained indicate that, in both systems, the fruits and vegetables stored with the ethylene scavenger extended their shelf life and reduced their loss of quality. In all of the vegetables, the weight loss was higher in those that were not stored with the scavenger. Similar results were found for the loss of firmness. Regarding the appearance, the presence of the scavenger does not provide a significant improvement in the climacteric fruits along time in both systems. In non-climacteric fruits and vegetables, relevant results were obtained, increasing their shelf life by 4 to 10 days, depending on the vegetable. Even though the results of both systems with the scavenger were satisfactory, the reusable container system presented more efficiency, extending the shelf life of vegetables for a longer period of time.


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