Journal
LWT-FOOD SCIENCE AND TECHNOLOGY
Volume 152, Issue -, Pages -Publisher
ELSEVIER
DOI: 10.1016/j.lwt.2021.112427
Keywords
Hydrogel; Cyclodextrin inclusion complexes; Cross-linked; Packaging; Preservation
Categories
Funding
- State Key Laboratory of Utilization of Woody Oil Resources [2019XK 2002]
- National Natural Science Foundation of China [31972172]
- Natural Science Foundation of Jiangsu Province [BK20201417]
- Jiangsu Province Research Fund [JNHB-131]
- Jiangsu University Research Fund [11JDG050]
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The study developed an antibacterial packaging material by incorporating methyl-beta-cyclodextrin/Satureja montana L. essential oil inclusion complexes into soy soluble polysaccharide hydrogel. The results showed that the hydrogel had a more compact structure and improved hardness and antibacterial activity with the addition of the complexes.
As an emerging packaging material, hydrogels have been attracting attention to inhibit foodborne pathogens by encapsulating antimicrobial substances. Herein, an antibacterial packaging material was prepared via incorporation of methyl-beta-cyclodextrin/Satureja montana L. essential oil inclusion complexes (MCD/SEO-ICs) into soy soluble polysaccharide (MCD/SEO-SSPS) hydrogel. During, the addition of 1-(3-dimethylaminopropyl)-3-ethylcarbodiimide hydrochloride (EDC) and N-hydroxysuccinimide (NHS) facilitated the formation of amido linkage between -NH2 and -COOH. Compared with SSPS hydrogel, the MCD/SEO-SSPS hydrogel exhibited a more compact structure. What's more, physical characterization indicated that combining MCD/SEO-ICs with SSPS could improve the hardness, adhesiveness and springiness of hydrogel. More importantly, a good antibacterial activity of SPSS hydrogel was obtained with the addition of MCD/SEO-ICs. On this basis, the application test demonstrated that the prepared MCD/SEO-SSPS hydrogel could reduce the visible count of Staphylococcus aureus (S. aureus) in meat samples by 3.5 Log CFU/g during 7-days storage, which retained the freshness of chilled pork and extended the shelf life. The above results indicated that MCD/SEO-SSPS hydrogel can be used as a safe and effective active packaging material for chilled meat preservation.
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