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Biodegradable Poly(ε-Caprolactone) Active Films Loaded with MSU-X Mesoporous Silica for the Release of α-Tocopherol. Polymers (Basel) 2020; 12:polym12010137. [PMID: 31935865 PMCID: PMC7022599 DOI: 10.3390/polym12010137] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2019] [Revised: 12/30/2019] [Accepted: 01/01/2020] [Indexed: 01/07/2023] Open
Abstract
In this study, new active PCL (poly(ε-caprolactone)) films containing α-tocopherol (TOC) and MSU-X mesoporous silica were prepared by melt blending. The studied additives were directly incorporated into the polymer matrix or by impregnating TOC into MSU-X silica (PCL-IMP). Thermal, optical, oxygen and water barrier properties as well as oxidation onset parameters, were studied. Films containing MSU-X and/or TOC showed a significant increase in oxidative onset temperature (OOT) and oxidative induction time (OIT), improving thermal stability against materials oxidation by the addition of mesoporous silica and TOC into the polymer matrix. In addition, the effect of MSU-X addition on the migration behaviour of α-tocopherol from active films was investigated at 40 °C using 50% (v/v) ethanol as fatty food simulant, showing PCL-IMP films the lower release content and diffusion coefficient (3.5 × 10−15 cm2 s−1). Moreover, radical scavenging (DPPH and ABTS) and antibacterial activity against E. coli and S. aureus were favoured by the release of α-tocopherol in the developed films. The obtained results have demonstrated the potential of the new PCL-based active formulations for TOC controlled release in antioxidant and antibacterial food packaging applications.
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Chen X, Long Q, Zhu L, Lu LX, Sun LN, Pan L, Lu LJ, Yao WR. A Double-Switch Temperature-Sensitive Controlled Release Antioxidant Film Embedded with Lyophilized Nanoliposomes Encapsulating Rosemary Essential Oils for Solid Food. MATERIALS (BASEL, SWITZERLAND) 2019; 12:E4011. [PMID: 31816839 PMCID: PMC6926696 DOI: 10.3390/ma12234011] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/03/2019] [Revised: 11/27/2019] [Accepted: 11/29/2019] [Indexed: 11/23/2022]
Abstract
In order to match the solid food oxidation during logistics and storage process under severe high temperature, a double-switch temperature-sensitive controlled release antioxidant film embedded with lyophilized nanoliposomes encapsulating rosemary essential oils (REOs) was prepared. The double switch temperature at 35.26 and 56.98 °C was achieved by development of a temperature sensitive polyurethane (TSPU) film. With biaxially oriented polyethylene terephthalate (BOPET) as a barrier layer, the intelligent complex film was prepared via coating the TSPU embedded with lyophilized nanoliposomes encapsulating REOs on BOPET. The results indicate that the REO is well encapsulated in nanoliposomes with encapsulation efficiency (EE) of 67.3%, high stability and lasting antioxidant effect during 60 days. The incorporation of lyophilized nanoliposomes containing REOs into TSPU remains the double-switch temperature-sensitive characteristic of the prepared TSPU. In agreement with porosity and WVTR results, the diffusion coefficient (D) of the antioxidant complex film sharply increases respectively at two switching temperatures, indicating that the intelligent double-switch temperature-sensitive controlled release property is functioning. Furthermore, compared with films directly added with REO, the lower Ds of films added with lyophilized nanoliposomes encapsulating REOs provides a longer-lasting antioxidant activity. Thus, the acquired controlled release antioxidant film sensitive to temperature at 39.56 and 56.00 °C can be potentially applied for protection of solid food during distribution and storage process under severe high temperatures.
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Affiliation(s)
- Xi Chen
- Department of Packaging Engineering, Jiangnan University, Wuxi 214122, China (L.-N.S.); (L.P.)
| | - Qing Long
- Department of Packaging Engineering, Jiangnan University, Wuxi 214122, China (L.-N.S.); (L.P.)
| | - Lei Zhu
- China National Center for Food Safety Risk Assessment, Beijing 100022, China
| | - Li-Xin Lu
- Department of Packaging Engineering, Jiangnan University, Wuxi 214122, China (L.-N.S.); (L.P.)
- Key Laboratory of Advanced Food Manufacturing Equipment and Technology of Jiangsu Province, Jiangnan University, Wuxi 214122, China
| | - Li-Nan Sun
- Department of Packaging Engineering, Jiangnan University, Wuxi 214122, China (L.-N.S.); (L.P.)
| | - Liao Pan
- Department of Packaging Engineering, Jiangnan University, Wuxi 214122, China (L.-N.S.); (L.P.)
- Key Laboratory of Advanced Food Manufacturing Equipment and Technology of Jiangsu Province, Jiangnan University, Wuxi 214122, China
| | - Li-Jing Lu
- Department of Packaging Engineering, Jiangnan University, Wuxi 214122, China (L.-N.S.); (L.P.)
- Key Laboratory of Advanced Food Manufacturing Equipment and Technology of Jiangsu Province, Jiangnan University, Wuxi 214122, China
| | - Wei-Rong Yao
- State Key Laboratory of Food Science and Technology, Jiangnan University, Wuxi 214122, China;
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Dong Z, Luo C, Guo Y, Ahmed I, Pavase TR, Lv L, Li Z, Lin H. Characterization of new active packaging based on PP/LDPE composite films containing attapulgite loaded with Allium sativum essence oil and its application for large yellow croaker (Pseudosciaena crocea) fillets. Food Packag Shelf Life 2019. [DOI: 10.1016/j.fpsl.2019.100320] [Citation(s) in RCA: 29] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Zhang Y, Zhang Y, Zhu Z, Jiao X, Shang Y, Wen Y. Encapsulation of Thymol in Biodegradable Nanofiber via Coaxial Eletrospinning and Applications in Fruit Preservation. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2019; 67:1736-1741. [PMID: 30676718 DOI: 10.1021/acs.jafc.8b06362] [Citation(s) in RCA: 68] [Impact Index Per Article: 13.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
The application of the nanofiber film in the field of food preservation was an emerging research direction in recent years. With the functionalization of nanofibers, the quality and safety of food can be better guaranteed. In the present work, thymol as an antibacterial agent was encapsulated into poly(lactide- co-glycolide) to form core-shell nanofibers by coaxial electrospinning. With such a core-shell nanofiber film, thymol can be slowly released to headspace between food and the nanofiber film, inhibiting the growth of bacteria on the surface of food. The morphology and core-shell structure of nanofibers were confirmed by scanning electron microscopy and transmission electron microscopy. The antibacterial and fruit preservation abilities of the nanofiber film were tested on strawberries. Studies have shown that it can effectively inhibit the growth of bacteria, fungi, and yeast and extend the shelf life of fruit. This novel antibacterial packaging material with excellent biocompatibility, biodegradability, and good sustained release performance would have a broad application prospect in the field of food preservation.
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Affiliation(s)
- Yibo Zhang
- College of Chemistry and Environmental Science , Hebei University , Baoding , Hebei 071002 , People's Republic of China
| | - Ye Zhang
- College of Chemistry and Environmental Science , Hebei University , Baoding , Hebei 071002 , People's Republic of China
| | - Zhu Zhu
- School of Chemistry and Bioengineering , University of Science and Technology Beijing , Beijing 100083 , People's Republic of China
| | - Xiangyu Jiao
- School of Chemistry and Bioengineering , University of Science and Technology Beijing , Beijing 100083 , People's Republic of China
| | - Yanli Shang
- College of Chemistry and Environmental Science , Hebei University , Baoding , Hebei 071002 , People's Republic of China
| | - Yongqiang Wen
- School of Chemistry and Bioengineering , University of Science and Technology Beijing , Beijing 100083 , People's Republic of China
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