Abstract
The effect of gallic acid treatment on mechanical and water barrier properties in zein and zein–corn starch composite films was investigated. Four concentrations of corn starch (5 %, 10 %, 15 %, 20 %) were used in composite films making a final solid concentration of 6 % (w/v) in the film forming solution. One composite film containing 10 % corn starch was also prepared in absence of gallic acid for comparison purpose. Gallic acid treatment improved tensile strength (TS) and water vapor permeability (WVP) while solubility was increased in control zein films. On the other hand, gallic acid treatment significantly (p < 0.05) reduced TS and increased WVP in zein–corn starch composite films. Interestingly, mechanical and water barrier properties of composite films prepared in absence of gallic acid were comparatively better than gallic acid treated composite films. These findings provided useful insights in how each individual hydrocolloid in the composite film was differently affected by gallic acid treatment.
Funding statement: This work was financially supported by National 125 Program 2011BAD23B02, 2013AA1022207, NSFC31171686; NSFJiangSU-BK2012556; 111 Project B07029 and PCSIRT0627.
References
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©2016 by De Gruyter
Articles in the same Issue
- Frontmatter
- Research Articles
- Torque Measurement in Real Time during Mixing and Kneading of Bread Dough with High Content of Resistant Maize Starch and Enzymes
- A Novel Color Parametric Technique for Kinetic Evaluation of Thermal Degradation and Stability of Fresh-Cut Yacon Slices
- Modelling and Multi-objective Optimisation of the VHP Pouch Packaging Sterilisation Process
- Ultrasound-Assisted Rehydration of Dried Sea Cucumber (Stichopus japonicus) – Kinetics
- Change of Multiple-Layered Phospholipid Vesicles Produced by Electrostatic Deposition of Polymers during Storage
- Mechanical and Water Barrier Properties of Zein–Corn Starch Composite Films as Affected by Gallic Acid Treatment
- Hot-air Drying Kinetics of Yam Slices under Step Change in Relative Humidity
- Study of Spray-dried Yoghurt Production in a Pilot-scale Equipment Using Drying Agents to Reduce Wall Deposition
Articles in the same Issue
- Frontmatter
- Research Articles
- Torque Measurement in Real Time during Mixing and Kneading of Bread Dough with High Content of Resistant Maize Starch and Enzymes
- A Novel Color Parametric Technique for Kinetic Evaluation of Thermal Degradation and Stability of Fresh-Cut Yacon Slices
- Modelling and Multi-objective Optimisation of the VHP Pouch Packaging Sterilisation Process
- Ultrasound-Assisted Rehydration of Dried Sea Cucumber (Stichopus japonicus) – Kinetics
- Change of Multiple-Layered Phospholipid Vesicles Produced by Electrostatic Deposition of Polymers during Storage
- Mechanical and Water Barrier Properties of Zein–Corn Starch Composite Films as Affected by Gallic Acid Treatment
- Hot-air Drying Kinetics of Yam Slices under Step Change in Relative Humidity
- Study of Spray-dried Yoghurt Production in a Pilot-scale Equipment Using Drying Agents to Reduce Wall Deposition