Nisin-Loaded Ulvan Particles: Preparation and Characterization

Nisin is an attractive alternative to chemical preservatives in the food industry. It is a cationic peptide of 34 amino acid residues that exhibits antimicrobial activity against Gram-positive bacteria. To ensure nisin stability in food matrices, new nisin-loaded ulvan particles were developed by th...

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Bibliographic Details
Published in:Foods 2021-05, Vol.10 (5), p.1007
Main Authors: Gruskiene, Ruta, Kavleiskaja, Tatjana, Staneviciene, Ramune, Kikionis, Stefanos, Ioannou, Efstathia, Serviene, Elena, Roussis, Vassilios, Sereikaite, Jolanta
Format: Article
Language:English
Subjects:
Amino acids
Antiinfectives and antibacterials
Antimicrobial activity
Antimicrobial agents
Bacteria
Calorimetry
Differential scanning calorimetry
encapsulation
Food
Food industry
Food processing industry
Food science
Fourier transforms
Gram-negative bacteria
Gram-positive bacteria
Infrared spectroscopy
Lipids
Listeria
Nisin
Peptides
pH effects
Polyvinyl alcohol
Preservatives
Proteins
Surface charge
Thermogravimetric analysis
ulvan
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Summary:Nisin is an attractive alternative to chemical preservatives in the food industry. It is a cationic peptide of 34 amino acid residues that exhibits antimicrobial activity against Gram-positive bacteria. To ensure nisin stability in food matrices, new nisin-loaded ulvan particles were developed by the complexation method. The interaction of nisin with ulvan was demonstrated by FT-IR spectroscopy and differential scanning calorimetry. The encapsulation efficiency was calculated at different pH values within the range of 4.0–7.0 and was found to have the highest value at pH 7.0. The size and surface charge of particles fabricated at different concentrations of nisin and pH values were determined. Nisin-loaded ulvan particles exhibited antimicrobial activity against Gram-positive bacteria comparable to that of free nisin. Therefore, the developed complexes have the potential for application as biopreservatives in the food industry. For the first time, the potential of ulvan as a carrier of antimicrobial agent nisin was demonstrated.
ISSN:2304-8158
2304-8158
DOI:10.3390/foods10051007