Extract of common mallow (Malva sylvestris) petals incorporated in starch/tragacanth gum film as a halochromic indicator for monitoring of Nile tilapia (Oreochromis niloticus) fillet quality

This study aimed to use common mallow ( Malva sylvestris ) extract (EMS) with ratios of 0.0, 0.5, 1.0, and 2.0% as an indicator in the film produced from corn starch/tragacanth gum matrix using a casting method to monitor the freshness of Nile tilapia fillets stored at 4 °C. The results showed that...

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Bibliographic Details
Published in:Journal of food measurement & characterization 2024-06, Vol.18 (6), p.4161-4176
Main Authors: Noghani Bahambari, Fatemeh, Rajabi Islami, Houman, Shamsaie Mehrgan, Mehdi
Format: Article
Language:English
Subjects:
Ammonia
Anthocyanins
Chemistry
Chemistry and Materials Science
Chemistry/Food Science
Color
Colorimetry
Engineering
Fillets
Food Science
Fourier transforms
Freshness
Halochromism
Infrared spectra
Malva neglecta
Malva sylvestris
Moisture content
Monitoring methods
Oreochromis niloticus
Original Paper
Packaging
Permeability
pH effects
Starch
Tilapia
Tragacanth
Ultimate tensile strength
Water content
Water vapor
X-ray diffraction
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Summary:This study aimed to use common mallow ( Malva sylvestris ) extract (EMS) with ratios of 0.0, 0.5, 1.0, and 2.0% as an indicator in the film produced from corn starch/tragacanth gum matrix using a casting method to monitor the freshness of Nile tilapia fillets stored at 4 °C. The results showed that the total anthocyanin content of EMS was 1185.6 ± 0.58 mg cyanidin-3-glucoside Kg −1 . The starch/tragacanth gum films incorporated with 0.5 and 1.0% EMS were sensitive to the 0.8 and 1.4 M ammonia and their color changed after 20 min of exposure, while starch/tragacanth gum film incorporated with 2.0% EMS showed no visible color change in the presence of 0.2, 0.8 and 1.4% M ammonia. The Fourier transform infrared and X-ray diffraction spectra of the colorimetric films showed that EMS was successfully immobilized into the starch/tragacanth gum matrix. The moisture content and water solubility were significantly lower in the films containing EMS compared to those with no EMS supplementation. With increasing EMS concentration, water vapor permeability and ultimate tensile strength significantly decreased with the lowest values observed in films incorporated with 2.0% EMS (p 
ISSN:2193-4126
2193-4134
DOI:10.1007/s11694-024-02484-z