A multidisciplinary protocol is here proposed to monitor the preservation of fresh pumpkin sam-ples (FP) using three commercial polymeric-films: A made of biodegradable cellophane from re-generated cellulose pulp; B from corn starch, cassava and eucalyptus, C made of polylactic acid from corn starch, and a polyethylene film used as reference (REF). Chemical, mechanical and mi-crobiological analyses were applied on packaging and fresh and packaged samples at different times. After a 11-days period NMR spectroscopy results showed a sucrose increase and a malic acid decrease in all the biofilms with respect to FP; fructose, glucose, galactose levels remained quite constant in biofilms B and C; the most abundant amino acids remained quite constant in biofilm A and decreased significantly in biofilm B. From microbiological analyses total microbial count was below the threshold value up to 7 days for samples in all the films, and 11 days for biofilm C. The lactic acid bacteria and yeasts and moulds counts were below the acceptability limit during the 11 days for all packages. In the case of biofilm C, the most promising packaging for microbiological point of view, the aroma analysis was also carried out. In the paper you can find all the analysis done and all the value found.

Commercial bio-packaging to preserve the quality and extend the shelf-life of vegetables. The case-study of pumpkin samples studied by a multimethodological approach / Di Matteo, Giacomo; Di Matteo, Paola; Sambucci, Matteo; Tirillo', Jacopo; Giusti, Anna Maria; Vinci, Giuliana; Gobbi, Laura; Prencipe, Sabrina A.; Salvo, Andrea; Ingallina, Cinzia; Spano, Mattia; Sobolev, Anatoly P.; Proietti, Noemi; Di Tullio, Valeria; Russo, Paola; Mannina, Luisa; Valente, Marco. - In: FOODS. - ISSN 2304-8158. - 10:(2021), pp. 1-24.

Commercial bio-packaging to preserve the quality and extend the shelf-life of vegetables. The case-study of pumpkin samples studied by a multimethodological approach

Giacomo Di Matteo
Primo
;
Paola Di Matteo
Secondo
;
Matteo Sambucci;Jacopo Tirillò;Anna Maria Giusti;Giuliana Vinci;Laura Gobbi;Sabrina A. Prencipe;Andrea Salvo;Cinzia Ingallina;Mattia Spano;Paola Russo
;
Luisa Mannina
Penultimo
;
Marco Valente
Ultimo
2021

Abstract

A multidisciplinary protocol is here proposed to monitor the preservation of fresh pumpkin sam-ples (FP) using three commercial polymeric-films: A made of biodegradable cellophane from re-generated cellulose pulp; B from corn starch, cassava and eucalyptus, C made of polylactic acid from corn starch, and a polyethylene film used as reference (REF). Chemical, mechanical and mi-crobiological analyses were applied on packaging and fresh and packaged samples at different times. After a 11-days period NMR spectroscopy results showed a sucrose increase and a malic acid decrease in all the biofilms with respect to FP; fructose, glucose, galactose levels remained quite constant in biofilms B and C; the most abundant amino acids remained quite constant in biofilm A and decreased significantly in biofilm B. From microbiological analyses total microbial count was below the threshold value up to 7 days for samples in all the films, and 11 days for biofilm C. The lactic acid bacteria and yeasts and moulds counts were below the acceptability limit during the 11 days for all packages. In the case of biofilm C, the most promising packaging for microbiological point of view, the aroma analysis was also carried out. In the paper you can find all the analysis done and all the value found.
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Utilizza questo identificativo per citare o creare un link a questo documento: http://hdl.handle.net/11573/1577423
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