Synthesis, characterization, and antimicrobial efficacy of composite films from guar gum/sago starch/whey protein isolate loaded with carvacrol, citral and carvacrol-citral mixture

Autor: Kunal Pal, Preetam Sarkar, Chanda Vilas Dhumal
Rok vydání: 2019
Předmět:
Cycas
Bacterial Gastroenteritis
Materials science
Polymers
Acyclic Monoterpenes
0206 medical engineering
Biomedical Engineering
Biophysics
Bacillus cereus
Bioengineering
Microbial Sensitivity Tests
02 engineering and technology
Citral
Galactans
Whey protein isolate
Mannans
Biomaterials
chemistry.chemical_compound
X-Ray Diffraction
Tensile Strength
Materials Testing
Plant Gums
Spectroscopy
Fourier Transform Infrared
Ultimate tensile strength
Escherichia coli
Oils
Volatile
Carvacrol
Food science
Microscopy
Confocal
Guar gum
biology
Viscosity
Starch
Hydrogen-Ion Concentration
021001 nanoscience & nanotechnology
Antimicrobial
biology.organism_classification
020601 biomedical engineering
Anti-Bacterial Agents
Steam
Whey Proteins
Solubility
chemistry
biology.protein
Cymenes
Stress
Mechanical
0210 nano-technology
Zdroj: Journal of Materials Science: Materials in Medicine. 30
ISSN: 1573-4838
0957-4530
Popis: The aim of this research was to formulate antimicrobial, composite films of guar gum, sago starch, and whey protein isolate for the prophylaxis of the bacterial gastroenteritis. The model antibacterial agents incorporated were essential oils, namely, carvacrol, citral and their combination. The films became darker and brownish in color due to the entrapment of the oils. The surface of the oil-entrapped films was more rough and coarse compared to the control film. Confocal micrographs affirmed the uniform distribution of the oil droplets within the biopolymeric network. The highest crystallite size and lowest lattice strain were estimated in the citral-containing film. FTIR analysis demonstrated that the incorporation of citral increased the proportion of the β-sheet structures of the whey protein isolate within the film matrix. However, the film formulation containing combination of carvacrol and citral demonstrated the lowest water vapor transmission rate (WVTR), highest tensile strength, Young's modulus and work to failure. All the oil-containing films demonstrated good antibacterial potency against the model bacterial gastroenteritis causing bacteria, namely, Bacillus cereus and Escherichia coli. In gist, it can be concluded that the prepared antimicrobial films could be used for the prophylaxis of the bacterial gastroenteritis.
Databáze: OpenAIRE
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