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|Title: ||Estudo de revestimentos edíveis. Caracterização de algumas formulações e seus efeitos na conservação de frutos|
|Authors: ||Melgão, Catarina|
|Advisors: ||Agulheiro-Santos, Ana Cristina|
|Issue Date: ||Mar-2019|
|Abstract: ||Characterization of formulations and their effects on fruit
Edible coatings appear as post-harvest technology in maintaining fruit quality
and safety for a longer period of time. The present dissertation focuses on the physical
and chemical characterization of edible formulations based on chitosan at two
concentrations, 1% and 1.5%, dissolved in 0.5% acetic acid, with and without addition
of surfactant, and with the addition of chemical compounds of essential oils in the
form of solution and film and subsequent evaluation of the effect of some of these in
case studies with strawberries and cherries.
In the case of strawberries, the effectiveness of edible coatings was observed in
the increase of the post-harvest life time, with better results for the higher
concentrations of chitosan. The parameters that best expressed this effect were
weight loss, total soluble solids, texture and phenolic compounds.
In the case of cherry study this effect wasn’t verified.|
|Appears in Collections:||FIT - Formação Avançada - Teses de Mestrado|
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