Data/hora: 02/06/2024 16:21:29

Provedor de dados: | 111
País: | China
Título: | Development of chitosan-glucose and chitosan-citric complexes edible coating to improve tomatoes post-harvest quality
Autores: | A., El-Beltagy; Eissa, Ayman H. Amer; S., El-Sayed.
Data: | 2013-07-02
Ano: | 2013
Palavras-chave: | Agricultural Engineering and postharvest technology Chitosan; Edible Coating; Tomatoes; Firmness and Weight loss.
Resumo: | The effect of different shrimp chitosan molecular weights as well as shrimp chitosan complexes (chitosan-glucose and chitosan-citric) on the quality characteristics of the stored (at 7°C±2°C and 90% RH) tomato fruits (Lycopersicum esculentum) was investigated.  Coating tomatoes with high molecular weight chitosan (H.M.C.G) significantly improved firmness and weight loss.  The lowest weight loss was found in high molecular weight chitosan-glucose (H.M.C.G) treatment followed by the fruits coated with high molecular weight chitosan (HMC) and then uncoated tomato fruits.  Both molecular weights was clear on retarding the total acidity loss especially for stored tomato fruit coated with low molecular weight chitosan, while control tomatoes exhibited a larger reduction (p ≤ 0.05) in total acidity over storage.  Meanwhile, the increasing of cold storage time significantly (p ≥ 0.05) increased the pH in all uncoated and coated tomatoes.  Generally, no significant (P &gt; 0.05) difference was observed in pH, titratable acidity and total soluble solids (T.S.S.) as well as sensory attributes among the tomato fruits coated with chitosan, chitosan citric and chitosan glucose.  Meanwhile, the fruits coated with low molecular weight chitosan had a higher (p ≥ 0.05) T.S.S. compared with that coated by the high molecular weight chitosan.   Keywords: chitosan, edible coating, tomatoes, firmness and weight loss
Tipo: | Info:eu-repo/semantics/article
Idioma: | Inglês
Identificador: | http://www.cigrjournal.org/index.php/Ejounral/article/view/2392
Editor: | International Commission of Agricultural and Biosystems Engineering

Relação:

http://www.cigrjournal.org/index.php/Ejounral/article/view/2392/1783

http://www.cigrjournal.org/index.php/Ejounral/article/downloadSuppFile/2392/679

Formato: | application/pdf

Fonte:

Agricultural Engineering International: CIGR Journal; Vol 15, No 3 (2013): CIGR Journal; 208-216

1682-1130