| Full text | |
| Author(s): |
Manrich, Anny
;
Moreira, Francys K. V.
;
Otoni, Caio G.
;
Lorevice, Marcos V.
;
Martins, Maria A.
;
Mattoso, Luiz H. C.
Total Authors: 6
|
| Document type: | Journal article |
| Source: | Carbohydrate Polymers; v. 164, p. 83-91, MAY 15 2017. |
| Web of Science Citations: | 21 |
| Abstract | |
Cutin is the biopolyester that protects the extracellular layer of terrestrial plants against dehydration and environmental stresses. In this work, cutin was extracted from tomato processing waste and cast into edible films having pectin as a binding agent. The influences of cutin/pectin ratio (50/50 and 25/75), film-forming suspension pH, and casting method on phase dispersion, water resistance and affinity, and thermal and mechanical properties of films were investigated. Dynamic light scattering and scanning electron microscopy revealed that cutin phase aggregation was reduced by simply increasing pH. The 50/50 films obtained by casting neutral-pH suspensions presented uniform cutin dispersion within the pectin matrix. Consequently, these films exhibited lower water uptake and solubility than their acidic counterparts. The cutin/pectin films developed here were shown to mimic tomato peel itself with respect to mechanical strength and thermal stability. Such behavior was found to be virtually independent of pH and casting method. (C) 2017 Elsevier Ltd. All rights reserved. (AU) | |
| FAPESP's process: | 14/23098-9 - Study and optimization of natural fiber-reinforced edible polymer biocomposites formulated with fruit and vegetable processing wastes |
| Grantee: | Caio Gomide Otoni |
| Support Opportunities: | Scholarships in Brazil - Doctorate (Direct) |