Yiwei Wang

Bio: Yiwei Wang is an academic researcher from Jiangsu University. The author has contributed to research in topics: Self-healing hydrogels. The author has an hindex of 1, co-authored 1 publications receiving 2 citations.

Antibacterial efficacy of Satureja montana L. essential oil encapsulated in methyl-β-cyclodextrin/soy soluble polysaccharide hydrogel and its assessment as meat preservative

Abstract: 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-β-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.

Nanocarriers for Sustainable Active Packaging: An Overview during and Post COVID-19

Abstract: Lockdown has been installed due to the fast spread of COVID-19, and several challenges have occurred. Active packaging was considered a sustainable option for mitigating risks to food systems during COVID-19. Biopolymeric-based active packaging incorporating the release of active compounds with antimicrobial and antioxidant activity represents an innovative solution for increasing shelf life and maintaining food quality during transportation from producers to consumers. However, food packaging requires certain physical, chemical, and mechanical performances, which biopolymers such as proteins, polysaccharides, and lipids have not satisfied. In addition, active compounds have low stability and can easily burst when added directly into biopolymeric materials. Due to these drawbacks, encapsulation into lipid-based, polymeric-based, and nanoclay-based nanocarriers has currently captured increased interest. Nanocarriers can protect and control the release of active compounds and can enhance the performance of biopolymeric matrices. The aim of this manuscript is to provide an overview regarding the benefits of released active compound-loaded nanocarriers in developing sustainable biopolymeric-based active packaging with antimicrobial and antioxidant properties. Nanocarriers improve physical, chemical, and mechanical properties of the biopolymeric matrix and increase the bioactivity of released active compounds. Furthermore, challenges during the COVID-19 pandemic and a brief post-COVID-19 scenario were also mentioned.