Novel Dioscorea hispida starch-based hydrogels and their beneficial use as disinfectants

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Abstract

Starch-grafted polyacrylamide hydrogels were successfully prepared via chemical polymerization method in basic solution, which provides a homogeneous suspension in the reaction system. The results obtained from Fourier transform infrared-attenuated total reflectance confirmed that the monomer polyacrylamide was grafted onto the starch backbone as shown by the cross-linked peak at 1638 cm-1. Scanning electron microscopy showed that the morphology of starch-grafted polyacrylamide hydrogels has a highly porous structure which provides excellent water absorption capacity with a swelling ratio up to 124%. The X-ray diffraction showed no significant crystallization peaks, indicating that an amorphous hydrogel has been produced. Supported by differential scanning calorimetry, the highest transition glass temperature was observed at 101°C. The starch-grafted polyacrylamide hydrogel extracts inhibited Escherichia coli, Staphylococcus aureus, Saccharomyces cerevisiae, and Salmonella typhimurium growth The fish embryo toxicity test demonstrated that the hydrogel with 2:1 ratio of polyacrylamide: starch has an acceptable level of toxicity. This result indicates that the synthesized hydrogel is applicable for biological purposes with further modifications.

Original languageEnglish
Pages (from-to)42-59
Number of pages18
JournalJournal of Bioactive and Compatible Polymers
Volume31
Issue number1
DOIs
Publication statusPublished - 1 Jan 2016

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Disinfectants
Hydrogels
Starch
Polyacrylates
Hydrogel
Toxicity
Salmonella
Water absorption
Crystallization
Yeast
Fish
Escherichia coli
Swelling
Differential scanning calorimetry
Suspensions
Fourier transforms
Monomers
Polymerization
Infrared radiation
X ray diffraction

Keywords

  • antibacteria
  • dioscorine
  • Hydrogel
  • starch
  • toxicity

ASJC Scopus subject areas

  • Biomaterials
  • Polymers and Plastics
  • Materials Chemistry
  • Bioengineering

Cite this

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title = "Novel Dioscorea hispida starch-based hydrogels and their beneficial use as disinfectants",
abstract = "Starch-grafted polyacrylamide hydrogels were successfully prepared via chemical polymerization method in basic solution, which provides a homogeneous suspension in the reaction system. The results obtained from Fourier transform infrared-attenuated total reflectance confirmed that the monomer polyacrylamide was grafted onto the starch backbone as shown by the cross-linked peak at 1638 cm-1. Scanning electron microscopy showed that the morphology of starch-grafted polyacrylamide hydrogels has a highly porous structure which provides excellent water absorption capacity with a swelling ratio up to 124{\%}. The X-ray diffraction showed no significant crystallization peaks, indicating that an amorphous hydrogel has been produced. Supported by differential scanning calorimetry, the highest transition glass temperature was observed at 101°C. The starch-grafted polyacrylamide hydrogel extracts inhibited Escherichia coli, Staphylococcus aureus, Saccharomyces cerevisiae, and Salmonella typhimurium growth The fish embryo toxicity test demonstrated that the hydrogel with 2:1 ratio of polyacrylamide: starch has an acceptable level of toxicity. This result indicates that the synthesized hydrogel is applicable for biological purposes with further modifications.",
keywords = "antibacteria, dioscorine, Hydrogel, starch, toxicity",
author = "Imran Azman and {Abd. Mutalib}, Sahilah and {Mohd Yusoff}, {Siti Fairus} and Sa`Ariwijaya, {Mohd Shazrul Fazry} and Akram Noordin and Malina Kumaran and {Mat Lazim}, {Mohamad Azwani Shah}",
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AU - Azman, Imran

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AU - Sa`Ariwijaya, Mohd Shazrul Fazry

AU - Noordin, Akram

AU - Kumaran, Malina

AU - Mat Lazim, Mohamad Azwani Shah

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N2 - Starch-grafted polyacrylamide hydrogels were successfully prepared via chemical polymerization method in basic solution, which provides a homogeneous suspension in the reaction system. The results obtained from Fourier transform infrared-attenuated total reflectance confirmed that the monomer polyacrylamide was grafted onto the starch backbone as shown by the cross-linked peak at 1638 cm-1. Scanning electron microscopy showed that the morphology of starch-grafted polyacrylamide hydrogels has a highly porous structure which provides excellent water absorption capacity with a swelling ratio up to 124%. The X-ray diffraction showed no significant crystallization peaks, indicating that an amorphous hydrogel has been produced. Supported by differential scanning calorimetry, the highest transition glass temperature was observed at 101°C. The starch-grafted polyacrylamide hydrogel extracts inhibited Escherichia coli, Staphylococcus aureus, Saccharomyces cerevisiae, and Salmonella typhimurium growth The fish embryo toxicity test demonstrated that the hydrogel with 2:1 ratio of polyacrylamide: starch has an acceptable level of toxicity. This result indicates that the synthesized hydrogel is applicable for biological purposes with further modifications.

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