Edible Coating Using a Chitosan-Based Colloid Incorporating Grapefruit Seed Extract for Cherry Tomato Safety and Preservation
| Autor: | Kyung Bin Song, Seung Jo Lee, Jin Sung Won, Hyeon Hwa Park, Seacheol Min |
|---|---|
| Rok vydání: | 2017 |
| Předmět: |
biology
Chemistry food and beverages Titratable acid 04 agricultural and veterinary sciences engineering.material Bacterial growth Grapefruit seed extract biology.organism_classification 040401 food science Lycopene 040501 horticulture Chitosan chemistry.chemical_compound 0404 agricultural biotechnology Coating Cherry tomato engineering Postharvest Food science 0405 other agricultural sciences Food Science |
| Zdroj: | Journal of Food Science. 83:138-146 |
| ISSN: | 0022-1147 |
| DOI: | 10.1111/1750-3841.14002 |
| Popis: | Grapefruit seed extract (GSE)‐containing chitosan‐based coating was developed and applied to cherry tomatoes to protect them from Salmonellainvasion and improve their storability. The coating colloids were produced by mixing a chitosan colloid (1% [w/w] chitosan) with GSE at various concentrations (0.5%, 0.7%, 1.0%, and 1.2% [w/w]) using high‐shear mixing (10000 rpm, 2 min). Coatings with chitosan colloids containing GSE at 0.0%, 0.5%, 0.7%, and 1.0% (w/w) inactivated Salmonellaon cherry tomatoes by 1.0 ± 0.3, 1.2 ± 0.3, 1.6 ± 0.1, and 2.0 ± 0.3 log CFU/cherry tomato, respectively. Coatings both with and without GSE (1.0%) effectively inhibited the growth of Salmonellaand total mesophilic aerobes, reduced CO2generation, and retarded titratable acidity decrease during storage at 10 and 25 °C. The advantage of incorporating GSE in the formulation was demonstrated by delayed microorganism growth and reduced weight loss at 25 °C. The chitosan‐GSE coating did not affect lycopene concentration, color, and sensory properties (P> 0.05). Chitosan‐GSE coating shows potential for improving the microbiological safety and storability of cherry tomatoes, with stronger efficacy at 25 °C than that of chitosan coating without GSE. A novel chitosan coating containing grape fruit seed extract (GSE) improved the microbiological safety against Salmonellaand storability of cherry tomatoes without altering their flavor, demonstrating its strong potential as an effective postharvest technology. Chitosan coating containing GSE might be preferable over chitosan coating without GSE for application to tomatoes that are stored at room temperature in that it more effectively inhibits microbial growth and weight loss than the coating without GSE at 25 °C. |
| Databáze: | OpenAIRE |
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