Impact of Sweet Potato Starch-Based Nanocomposite Films Activated With Thyme Essential Oil on the Shelf-Life of Baby Spinach Leaves
| Autor: | Salam A. Ibrahim, Aseel T. Issa, Reza Tahergorabi |
|---|---|
| Rok vydání: | 2017 |
| Předmět: |
0301 basic medicine
Salmonella Health (social science) Population Plant Science lcsh:Chemical technology medicine.disease_cause Shelf life Health Professions (miscellaneous) Microbiology Article sweet potato starch law.invention 03 medical and health sciences 0404 agricultural biotechnology law Botany Escherichia coli medicine antimicrobial films Salmonella Typhimurium baby spinach leaves lcsh:TP1-1185 Food science education Potato starch Essential oil education.field_of_study 030109 nutrition & dietetics biology Chemistry food and beverages 04 agricultural and veterinary sciences biology.organism_classification Antimicrobial 040401 food science Food packaging Spinach Food Science |
| Zdroj: | Foods Foods; Volume 6; Issue 6; Pages: 43 Foods, Vol 6, Iss 6, p 43 (2017) |
| ISSN: | 2304-8158 |
| DOI: | 10.3390/foods6060043 |
| Popis: | Salmonella Typhimurium (S. Typhi) and Escherichia coli (E. coli) have been responsible for an increasing number of outbreaks linked to fresh produce, such as baby spinach leaves, in the last two decades. More recently, antimicrobial biodegradable packaging systems have been attracting much attention in the food packaging industry as eco-friendly alternatives to conventional plastic packaging. The objective of this study was to evaluate the effect of antibacterial nanocomposite films on inoculated spinach leaves and on the sensory properties of these leaves during eight days of refrigerated storage. In this study, an antibacterial film comprised of sweet potato starch (SPS), montmorillonite (MMT) nanoclays and thyme essential oil (TEO) as a natural antimicrobial agent was developed. Our results showed that the incorporation of TEO in the film significantly (p < 0.05) reduced the population of E. coli and S. Typhi on fresh baby spinach leaves to below detectable levels within five days, whereas the control samples without essential oil maintained approximately 4.5 Log colony forming unit (CFU)/g. The sensory scores for spinach samples wrapped in films containing TEO were higher than those of the control. This study thus suggests that TEO has the potential to be directly incorporated into a SPS film to prepare antimicrobial nanocomposite films for food packaging applications. |
| Databáze: | OpenAIRE |
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