Journal
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
Volume 201, Issue -, Pages 641-652Publisher
ELSEVIER
DOI: 10.1016/j.ijbiomac.2022.01.073
Keywords
Solanum lycopersicum; Hydrocolloids blend; Fruit storage quality
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This study tested a novel combination of hydrocolloid gum arabic (GA) and carboxymethyl cellulose (CMC) as a coating to extend the postharvest life of tomatoes. The results showed that the biocomposite hydrocolloid coating reduced weight loss, decay percentage, and stress markers in tomato fruits. It also preserved bioactive compounds, color, and enzymatic ROS scavenging mechanism, and delayed senescence by maintaining cell wall fractions.
This study tested a novel combination of hydrocolloid gum arabic (GA) and carboxymethyl cellulose (CMC) to extend postharvest life of tomatoes. For this purpose, tomato fruits were coated with GA 10%, CMC 0.5% and GA 10% + CMC 0.5%, and stored for 20 days at 20 C and 90 +/-& nbsp;2% RH. Application of biocomposite hydrocolloid coating reduced physiological weight loss, respiration rate, ethylene production, decay percentage and stress markers viz. malondialdehyde and hydrogen peroxide. Biocomposite hydrocolloid coating inhibited change in bioactive compounds (phenolics, ascorbic acid, and lycopene), color, organic acids, soluble sugars and up regulated enzymatic ROS scavenging mechanism in tomato fruit more than GA or CMC coating. Moreover, biocomposite coatings delayed senescence by reducing activity of cell wall degrading enzymes and maintaining cell wall fractions. Conclusively, the biocomposite coating based on GA and CMC was superior to their individual coating in prolonging ripening phase, delaying senescence and increasing the acceptability of tomato fruits for longer duration.
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