当前位置： SCI文献检索 > INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES期刊下所有文献 > Physical, structural and thermal properties of composite edible films prepared from pearl millet starch and carrageenan gum: Process optimization using response surface methodology.

Physical, structural and thermal properties of composite edible films prepared from pearl millet starch and carrageenan gum: Process optimization using response surface methodology.

Abstract：

:The present study aimed at developing edible composite films from pearl millet starch (PMS) and carrageenan gum (CG) blends. Central composite rotatable design of response surface methodology was used to optimize concentrations of PMS (2-5%), carrageenan (1-3.5%) and glycerol (15-35%) for the development of composite film. The optimization was done on the basis of responses viz. thickness, water vapor permeability (WVP), solubility and tensile strength (TS). Both starch and carrageenan concentrations positively affected the TS of films, whereas the reverse trend was observed with increased concentration of glycerol. The optimum level of different parameters resulting in a composite film with maximum TS and lower WVP and solubility values were obtained under conditions of 4.9% starch, 5% carrageenan and 15.73% plasticizer concentrations. The melting temperature of optimized PMS/CG film was higher than PMS film. Morphological studies exhibited homogeneous structure of PMS film while PMS/CG composite film had rough, coarser and slightly irregular surface. The stretched regions in Fourier-transform infrared spectroscopy and Differential Scanning Calorimeter analysis confirmed the miscibility and thermal stability of different components of PMS/CG composite films. The results indicated that the developed optimized PMS/CG film possessed lower WVP, solubility but higher transparency and TS in comparison to PMS film.

journal_name

Int J Biol Macromol

journal_title

International journal of biological macromolecules

authors

Sandhu KS,Sharma L,Kaur M,Kaur R

doi

10.1016/j.ijbiomac.2019.09.111

subject

Has Abstract

pub_date

2020-01-15 00:00:00

pages

704-713

eissn

0141-8130

issn

1879-0003

pii

S0141-8130(18)36422-5

journal_volume

143

pub_type

杂志文章

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