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Frontiers of Agriculture in China

ISSN 1673-7334

ISSN 1673-744X(Online)

CN 11-5729/S

Front Agric Chin    2011, Vol. 5 Issue (4) : 649-654     DOI: 10.1007/s11703-011-1143-x
RESEARCH ARTICLE |
Study on filming of oxidized starch/PVA
Zhizhou CHEN(), Lin ZHANG, Lin WANG
College of Food Science and Technology, Agricultural University of Hebei; Hebei Agricultural Products Processing Engineering Technology Research Center, Baoding 071001, China
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Abstract  

In this study, oxidized starch was taken as raw material to prepare filming. Single factor and orthogonal experiments were conducted to investigate its properties. The results showed that the different concentrations of oxidized starch, glycerol, polyvinyl alcohol (PVA) and glutaraldehyde had significant effects on the properties of the oxidized starch/PVA films, among which the most important factor was glycerol, followed by the oxidized starch, PVA and glutaraldehyde. The optimum film-forming conditions were 6.0% oxidized starch, 6.0% PVA, 2.5% glycerol and 0.6% glutaraldehyde.

Keywords oxidized starch      filming      optimization of processing parameters     
Corresponding Authors: CHEN Zhizhou,Email:chenzhizhou2003@yahoo.com   
Issue Date: 05 December 2011
URL:  
http://academic.hep.com.cn/fag/EN/10.1007/s11703-011-1143-x     OR     http://academic.hep.com.cn/fag/EN/Y2011/V5/I4/649
Fig.1  Effects of different oxidized starch concentrations on tensile strength and breaking elongation.
Fig.2  Effects of different oxidized starch concentrations on light transmission rate.
Fig.3  Effects of different oxidized starch concentrations on water absorption.
Fig.4  Effects of different polyvinyl alcohol concentrations on tensile strength and breaking elongation.
Fig.5  Effects of different polyvinyl alcohol concentrations on light transmission rate.
Fig.6  Effects of different polyvinyl alcohol concentration on water absorption.
Fig.7  Effects of different glycerol concentrations on tensile strength and breaking elongation.
Fig.8  Effects of different glycerol concentration on light transmission rate.
Fig.9  Effects of different glycerol concentration on water absorption.
Fig.10  Effects of different glutaraldehyde concentrations on tensile strength and breaking elongation
Fig.11  Effects of different glutaraldehyde concentrations on light transmission rate
Fig.12  Effects of different glutaraldehyde concentration on water absorption
Experimental numberFactorsComprehensive evaluation
Oxidized starch A (%)PVA B (%)Glycerol C (%)Glutaraldehyde D (%)
11(6.0)1(5.0)1(2.5)1(0.5)60.80
212(5.5)2(3.0)2(0.55)64.10
313(6.0)3(3.5)3(0.6)64.88
42(6.5)12346.62
5223138.21
6231267.57
73(7.0)13233.80
8321361.75
9332144.14
T1189.78141.22190.12143.15-
T2152.40164.06154.86165.47-
T3139.69176.59136.89173.25-
R263.2647.0763.3747.72-
R250.8054.6951.6255.16-
R346.5658.8645.6357.75-
M16.7011.7917.7410.03-
Tab.1  Result and analysis of the filming orthogonal experiments
CombinationTensile strength (MPa)Elongation rate (%)Light transmission rate (%)Water absorption (%)Comprehensive evaluation
A1B3C1D325.36160.08%55.4562.78%71.56
A2B3C1D224.84158.00%55.1572.91%67.57
Tab.2  Test results of the filming parallel experiments
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