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Dai H, Lv T, Liu S, Luo Y, Wang Y, Wang H, Ma L, Wu J, Zhang Y. Preparation of nanocellulose light porous material adsorbed with tannic acid and its application in fresh-keeping pad. Food Chem 2024; 444:138676. [PMID: 38335683 DOI: 10.1016/j.foodchem.2024.138676] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2023] [Revised: 01/25/2024] [Accepted: 02/02/2024] [Indexed: 02/12/2024]
Abstract
This study fabricated nanocellulose lightweight porous material (TOCNF-G-LPM-TA) as absorbent fresh-keeping pad for meat products, using TEMPO-oxidized cellulose nanofibril (TOCNF) and gelatin as structural skeleton and tannic acid (TA) as antibacterial component of TOCNF lightweight porous material (TOCNF-G-LPM). The adsorption kinetics, capacity and mechanism of TOCNF-G-LPM in different initial concentrations of TA solutions were investigated, the antioxidant and antibacterial properties of TOCNF-G-LPM-TA and its fresh-keeping effect on refrigerated pork at 4 ℃ were studied. Due to strong hydrogen bonding and porous structure, TOCNF-G-LPM exhibited excellent TA adsorption ability (230 mg/g) conforming with pseudo-second-order kinetic and Langmuir isotherm models. TA endowed TOCNF-G-LPM with good antioxidant and antibacterial activities. According to changes in appearance, pH and TVB-N values of pork during storage at 4 ℃, TOCNF-G-LPM-TA effectively extended the shelf life of refrigerated pork. This work provides a facile method for preparing nanocellulose based absorbent fresh-keeping pads.
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Affiliation(s)
- Hongjie Dai
- College of Food Science, Southwest University, Chongqing 400715, China; Chongqing Key Laboratory of Speciality Food Co-Built by Sichuan and Chongqing, Chongqing 400715, China
| | - Tianyi Lv
- College of Food Science, Southwest University, Chongqing 400715, China
| | - Siyi Liu
- College of Food Science, Southwest University, Chongqing 400715, China
| | - Yuyuan Luo
- College of Food Science, Southwest University, Chongqing 400715, China
| | - Yuxi Wang
- College of Food Science, Southwest University, Chongqing 400715, China
| | - Hongxia Wang
- College of Food Science, Southwest University, Chongqing 400715, China
| | - Liang Ma
- College of Food Science, Southwest University, Chongqing 400715, China; Chongqing Key Laboratory of Speciality Food Co-Built by Sichuan and Chongqing, Chongqing 400715, China
| | - Jihong Wu
- China Food Flavor and Nutrition Health Innovation Center, Beijing Technology and Business University, Beijing 100048, China
| | - Yuhao Zhang
- College of Food Science, Southwest University, Chongqing 400715, China; Chongqing Key Laboratory of Speciality Food Co-Built by Sichuan and Chongqing, Chongqing 400715, China.
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2
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Rayees R, Gani A, Noor N, Ayoub A, Ashraf ZU. General approaches to biopolymer-based Pickering emulsions. Int J Biol Macromol 2024; 267:131430. [PMID: 38599428 DOI: 10.1016/j.ijbiomac.2024.131430] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2023] [Revised: 03/26/2024] [Accepted: 04/04/2024] [Indexed: 04/12/2024]
Abstract
Pickering emulsion is a type of emulsion that uses solid particles or colloidal particles as emulsifiers rather than surfactants to adhere at oil-water interface. Pickering emulsions have gathered significant research attention recently due to their excellent stability and wide range of potential uses compared to traditional emulsions. Major advancements have been made in development of innovative Pickering emulsions using different colloidal particles by various techniques including homogenization, emulsification and ultrasonication. Use of biopolymer particles gives Pickering emulsions a more escalating possibilities. In this review paper, we seek to present a critical overview of development in food-grade particles that have been utilized to create Pickering emulsions with a focus on techniques and application of Pickering emulsions. Particularly, we have evaluated protein, lipid, polysaccharide-based particles and microalgal proteins that have emerged in recent years with respect to their potential to stabilize and add novel functionalities to Pickering emulsions. Some preparation methods of Pickering emulsions in brief, applications of Pickering emulsions are also highlighted. Encapsulation and delivery of bioactive compounds, fat substitutes, film formation and catalysis are potential applications of Pickering emulsions. Pickering double emulsions, nutraceutical and bioactive co-delivery, and preparation of porous materials are among research trends of food-grade Pickering emulsions.
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Affiliation(s)
- Rahiya Rayees
- Department of Food Science and Technology, University of Kashmir, Hazratbal, Srinagar 190006, Jammu & Kashmir, India
| | - Adil Gani
- Department of Food Science and Technology, University of Kashmir, Hazratbal, Srinagar 190006, Jammu & Kashmir, India.
| | - Nairah Noor
- Department of Food Science and Technology, University of Kashmir, Hazratbal, Srinagar 190006, Jammu & Kashmir, India
| | - Aneesa Ayoub
- Department of Food Science and Technology, University of Kashmir, Hazratbal, Srinagar 190006, Jammu & Kashmir, India
| | - Zanoor Ul Ashraf
- Department of Food Science and Technology, University of Kashmir, Hazratbal, Srinagar 190006, Jammu & Kashmir, India
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3
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Niu X, Wan Z, Mhatre SE, Ye Y, Lu Y, Gao G, Bai L, Rojas OJ. Structured Emulgels by Interfacial Assembly of Terpenes and Nanochitin. ACS NANO 2023; 17:25542-25551. [PMID: 38078623 DOI: 10.1021/acsnano.3c09533] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/27/2023]
Abstract
Interfacial assemblies formed by colloidal complexation are effective in multiphase stabilization, as shown in structured liquids and Pickering emulgels. Herein, we demonstrate a type of biobased colloidal system that spontaneously stabilizes an organic phase in a continuous hydrogel phase. Specifically, a triterpene extracted from bark (betulin, BE) is added to an organic phase containing a coniferous resin (rosin acid, a diterpene). BE is shown to take part in strong noncovalent interactions with the nanochitin dispersed in the aqueous (hydrogel) phase, leading to a complex of high interfacial activity. The viscoelastic response of the system is rationalized by the presence of a superstable structured dual network. When used as a templating material, the emulgel develops into structured liquids and cryogels. The herein introduced all-biobased type of nanoparticle surfactant system forms a gel ("emulsion-filled" with "aggregated droplets") that features the functional benefits of both betulin and nanochitin.
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Affiliation(s)
- Xun Niu
- Bioproducts Institute, Department of Chemical and Biological Engineering, Department of Wood Science and Department of Chemistry, University of British Columbia, 2360 East Mall, Vancouver, British Columbia V6T 1Z4, Canada
| | - Zhangmin Wan
- Bioproducts Institute, Department of Chemical and Biological Engineering, Department of Wood Science and Department of Chemistry, University of British Columbia, 2360 East Mall, Vancouver, British Columbia V6T 1Z4, Canada
| | - Sameer E Mhatre
- Bioproducts Institute, Department of Chemical and Biological Engineering, Department of Wood Science and Department of Chemistry, University of British Columbia, 2360 East Mall, Vancouver, British Columbia V6T 1Z4, Canada
| | - Yuhang Ye
- Bioproducts Institute, Department of Chemical and Biological Engineering, Department of Wood Science and Department of Chemistry, University of British Columbia, 2360 East Mall, Vancouver, British Columbia V6T 1Z4, Canada
| | - Yi Lu
- Bioproducts Institute, Department of Chemical and Biological Engineering, Department of Wood Science and Department of Chemistry, University of British Columbia, 2360 East Mall, Vancouver, British Columbia V6T 1Z4, Canada
| | - Guang Gao
- Life Sciences Institute Imaging Core Facility, Life Sciences Institute, University of British Columbia, Vancouver, British Columbia V6T 1Z3, Canada
| | - Long Bai
- Key Laboratory of Bio-based Material Science & Technology (Ministry of Education), Northeast Forestry University, Harbin 150040, People's Republic of China
| | - Orlando J Rojas
- Bioproducts Institute, Department of Chemical and Biological Engineering, Department of Wood Science and Department of Chemistry, University of British Columbia, 2360 East Mall, Vancouver, British Columbia V6T 1Z4, Canada
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4
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Li J, Zhao S, Zhu Q, Zhang H. Characterization of chitosan-gelatin cryogel templates developed by chemical crosslinking and oxidation resistance of camellia oil cryogel-templated oleogels. Carbohydr Polym 2023; 315:120971. [PMID: 37230613 DOI: 10.1016/j.carbpol.2023.120971] [Citation(s) in RCA: 10] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2023] [Revised: 04/17/2023] [Accepted: 04/29/2023] [Indexed: 05/27/2023]
Abstract
In this study, chitosan-gelatin conjugates were prepared by chemical crosslinking of tannic acid. The cryogel templates were developed through freeze-drying and immersed in camellia oil to construct cryogel-templated oleogels. Chemical crosslinking resulted in apparent colour changes and improved emulsion-related/rheological properties on conjugates. The cryogel templates with different formulas exhibited different microstructures with high porosities (over 96 %), and crosslinked samples might have higher hydrogen bonding strength. Tannic acid crosslinking also led to enhanced thermal stabilities and mechanical properties. Cryogel templates could reach a considerable oil absorption capacity of up to 29.26 g/g and prevent oil from leaking effectively. The obtained oleogels with high tannic acid content possessed outstanding antioxidant abilities. After 8 days of rapid oxidation at 40 °C, Oleogels with a high degree of crosslinking owned the lowest POV and TBARS values (39.74 nmol/kg, and 24.40 μg/g, respectively). This study indicates that the involvement of chemical crosslinking would favor the preparation and the application potential of cryogel-templated oleogels, and the tannic acid in the composite biopolymer systems could act as both the crosslinking agent and the antioxidant.
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Affiliation(s)
- Jiawen Li
- Zhejiang Key Laboratory for Agro-Food Processing, College of Biosystems Engineering and Food Science, Zhejiang University, Hangzhou 310058, China
| | - Shunan Zhao
- Zhejiang Key Laboratory for Agro-Food Processing, College of Biosystems Engineering and Food Science, Zhejiang University, Hangzhou 310058, China
| | - Qinyi Zhu
- Zhejiang Key Laboratory for Agro-Food Processing, College of Biosystems Engineering and Food Science, Zhejiang University, Hangzhou 310058, China
| | - Hui Zhang
- Zhejiang Key Laboratory for Agro-Food Processing, College of Biosystems Engineering and Food Science, Zhejiang University, Hangzhou 310058, China; Innovation Center of Yangtze River Delta, Zhejiang University, Jiaxing 314102, China.
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Yang D, Feng Y, Yao X, Zhao B, Li D, Liu N, Fang Y, Midgley A, Liu D, Katsuyoshi N. Recent advances in bioactive nanocrystal-stabilized Pickering emulsions: Fabrication, characterization, and biological assessment. Compr Rev Food Sci Food Saf 2023; 22:946-970. [PMID: 36546411 DOI: 10.1111/1541-4337.13096] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2022] [Revised: 10/07/2022] [Accepted: 12/01/2022] [Indexed: 12/24/2022]
Abstract
Numerous literatures have shown the advantages of Pickering emulsion (PE) for the delivery of bioactive ingredients in the fields of food, medicine, and cosmetics, among others. On this basis, the multi-loading mode of bioactives (internal phase encapsulation and/or loading at the interface) in small molecular bioactives nanocrystal-stabilized PE (BNC-PE) enables them higher loading efficiencies, controlled release, and synergistic or superimposed effects. Therefore, BNC-PE offers an efficacious delivery system. In this review, we briefly summarize BNC-PE fabrication and characterization, with a focus on the processes of possible evolution and absorption of differentially applied BNC-PE when interacting with the body. In addition, methods of monitoring changes and absorption of BNC-PE in vivo, from the nanomaterial perspective, are also introduced. The purpose of this review is to provide an accessible and comprehensive methodology for the characterization and evaluation of BNC-PE after formulation and preparation, especially in relation to biological assessment and detailed mechanisms throughout the absorption process of BNC-PE in vivo.
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Affiliation(s)
- Dan Yang
- School of Food Science and Engineering, Shaanxi University of Science and Technology, Xi'an, Shaanxi, China
- School of Biomedical and Pharmaceutical Science, Shaanxi University of Science and Technology, Xi'an, Shaanxi, China
| | - Yuqi Feng
- School of Food Science and Engineering, Shaanxi University of Science and Technology, Xi'an, Shaanxi, China
- School of Biomedical and Pharmaceutical Science, Shaanxi University of Science and Technology, Xi'an, Shaanxi, China
| | - Xiaolin Yao
- School of Food Science and Engineering, Shaanxi University of Science and Technology, Xi'an, Shaanxi, China
- School of Biomedical and Pharmaceutical Science, Shaanxi University of Science and Technology, Xi'an, Shaanxi, China
| | - Baofu Zhao
- School of Food Science and Engineering, Shaanxi University of Science and Technology, Xi'an, Shaanxi, China
- School of Biomedical and Pharmaceutical Science, Shaanxi University of Science and Technology, Xi'an, Shaanxi, China
| | - Dan Li
- School of Food Science and Engineering, Shaanxi University of Science and Technology, Xi'an, Shaanxi, China
- School of Biomedical and Pharmaceutical Science, Shaanxi University of Science and Technology, Xi'an, Shaanxi, China
| | - Ning Liu
- School of Food Science and Engineering, Shaanxi University of Science and Technology, Xi'an, Shaanxi, China
- School of Biomedical and Pharmaceutical Science, Shaanxi University of Science and Technology, Xi'an, Shaanxi, China
| | - Yapeng Fang
- Department of Food Science and Engineering, School of Agriculture and Biology, Shanghai Jiao Tong University, Shanghai, China
| | - Adam Midgley
- Key Laboratory of Bioactive Materials (MoE), College of Life Sciences, Nankai University, Tianjin, China
| | - Dechun Liu
- Institute of Medical Research, Northwestern Polytechnical University, Xi'an, Shaanxi, China
| | - Nishinari Katsuyoshi
- Glyn O. Phillips Hydrocolloid Research Centre, School of Bioengineering and Food Science, Hubei University of Technology, Wuhan, China
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6
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High yield production of chitin nanocrystals via hydrochloric acid vapor pre-treatment. Colloids Surf A Physicochem Eng Asp 2022. [DOI: 10.1016/j.colsurfa.2022.128567] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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7
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Tavasoli S, Liu Q, Jafari SM. Development of Pickering emulsions stabilized by hybrid biopolymeric particles/nanoparticles for nutraceutical delivery. Food Hydrocoll 2022. [DOI: 10.1016/j.foodhyd.2021.107280] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
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8
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A soft Pickering emulsifier made from chitosan and peptides endows stimuli-responsiveness, bioactivity and biocompatibility to emulsion. Carbohydr Polym 2022; 277:118768. [PMID: 34893215 DOI: 10.1016/j.carbpol.2021.118768] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2021] [Revised: 10/04/2021] [Accepted: 10/05/2021] [Indexed: 01/09/2023]
Abstract
Polymeric Pickering emulsifiers may bring new insights to emulsion theory and practice due to their soft characters. Herein, a group of soft Pickering emulsifiers, chitosan-casein hydrophobic peptides nanoparticles (CS-CHP NPs) were prepared with a non-covalent anti-solvent procedure. The CS-CHP NPs provided the contact angles of 37.2°-87.4°, stabilizing O/W or W/O emulsions with enhanced thermal stability, endowing the emulsion with pH and CO2/N2 responsiveness. The emulsifying behavior and mechanism presented by CS-CHP NPs were different from that of ordinary hard Pickering emulsifiers, where the appropriate contact angle was 37.2° instead of 87.4° for stabilizing O/W emulsions. Moreover, the nanoparticles possess antioxidant, antibacterial activities and excellent biocompatibility. DPPH and ABTS scavenging activity of the CS-CHP NPs were >220% of that of CS NPs. The last, the emulsion provided high-efficient encapsulation of curcumin, making the soft Pickering emulsifiers a group candidate for drug delivery in food, cosmetics and pharmaceutical industry.
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9
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Wang Y, Wang S, Li R, Wang Y, Xiang Q, Qiu S, Xu W, Bai Y. Synergistic effect of corn fiber gum and chitosan in stabilization of oil in water emulsion. Lebensm Wiss Technol 2022. [DOI: 10.1016/j.lwt.2021.112592] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
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10
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Abebe MW, Kim H. Methylcellulose/tannic acid complex particles coated on alginate hydrogel scaffold via Pickering for removal of methylene blue from aqueous and quinoline from non-aqueous media. CHEMOSPHERE 2022; 286:131597. [PMID: 34293568 DOI: 10.1016/j.chemosphere.2021.131597] [Citation(s) in RCA: 13] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/11/2021] [Revised: 07/12/2021] [Accepted: 07/16/2021] [Indexed: 06/13/2023]
Abstract
Adsorbents reported for liquid phase decontamination under both aqueous and non-aqueous media are all dispersed phase sorbents that further require a tedious separation step post adsorption. Herein, a monolith, highly porous, and mechanically robust scaffold was synthesized for the adsorption of pollutants from both aqueous and non-aqueous media with facile separation and regeneration. Methylcellulose-tannic acid complex particles were prepared and systematically decorated on the surface of interpenetrating polymer network (IPN) scaffold via Pickering emulsion. Due to the surface coating of the particles, plausible amphiphilic adsorption of quinoline (QUI) and methylene blue (MB) was achieved from fuel and water, respectively. The hydroxyl (OH-) and carboxyl (COOH-) groups of tannic acid, alginate, and polyacrylic acid created hydrogen bonding, electrostatic interaction, acid-base interaction, and π-π stacking. Maximum adsorption capacity of 791.17 mg/g MB and 460.92 mg/g QUI was recorded with facile separation, excellent adsorbent regeneration, and reusability. Although both followed the pseudo-second-order adsorption kinetic model, a different mechanism was identified to govern the adsorption under aqueous and non-aqueous environment i.e. only the surface particles were active for QUI adsorption while the scaffold was also involved for MB adsorption.
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Affiliation(s)
- Medhen W Abebe
- Department of Energy Science and Technology, Environmental Waste Recycle Institute, Myongji University, Yongin, Gyeonggi-do 17058, Republic of Korea
| | - Hern Kim
- Department of Energy Science and Technology, Environmental Waste Recycle Institute, Myongji University, Yongin, Gyeonggi-do 17058, Republic of Korea.
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11
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Dai H, Chen Y, Zhang S, Feng X, Cui B, Ma L, Zhang Y. Enhanced Interface Properties and Stability of Lignocellulose Nanocrystals Stabilized Pickering Emulsions: The Leading Role of Tannic Acid. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2021; 69:14650-14661. [PMID: 34813326 DOI: 10.1021/acs.jafc.1c04930] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
Cellulose and tannin are both abundant and biodegradable biopolymers, whose integrations show great potential in the food field due to their nutritional properties and biological activity. Here, lignocellulose nanocrystals (LCNC) isolated from pineapple peel were complexed with tannic acid (TA) through hydrogen-bonding interaction to prepare the LCNC/TA complex for stabilizing Pickering emulsions. Introducing TA decreased the interfacial tension (23.8-20.1 mN/m) and water contact angle (83.2-56.2°) with the LCNC/TA ratio ranging from 1:0 to 1:0.8 (w/w) but increased the size of the LCNC/TA complex. The droplet size of emulsions decreased from 115.0 to 51.3 μm accompanied by improved rheological properties. The emulsions stabilized by the LCNC/TA complex exhibited higher storage and environmental stabilities than those stabilized by LCNC alone. Interestingly, TA effectively promoted the interfacial adsorption of LCNC to build a stronger interfacial layer. The emulsion network structure was enhanced due to the formation of hydrogen-bonding interaction between LCNC and TA in the continuous phase.
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Affiliation(s)
- Hongjie Dai
- College of Food Science, Southwest University, No. 2, Tiansheng Road, Beibei District, Chongqing 400715, China
| | - Yuan Chen
- College of Food Science, Southwest University, No. 2, Tiansheng Road, Beibei District, Chongqing 400715, China
| | - Shumin Zhang
- College of Food Science, Southwest University, No. 2, Tiansheng Road, Beibei District, Chongqing 400715, China
| | - Xin Feng
- College of Food Science, Southwest University, No. 2, Tiansheng Road, Beibei District, Chongqing 400715, China
| | - Bo Cui
- State Key Laboratory of Biobased Material and Green Papermaking, Qilu University of Technology, Shandong Academy of Sciences, Jinan 250353, China
| | - Liang Ma
- College of Food Science, Southwest University, No. 2, Tiansheng Road, Beibei District, Chongqing 400715, China
- Key Laboratory of Luminescence Analysis and Molecular Sensing (Southwest University), Ministry of Education, Chongqing 400715, China
| | - Yuhao Zhang
- College of Food Science, Southwest University, No. 2, Tiansheng Road, Beibei District, Chongqing 400715, China
- Key Laboratory of Luminescence Analysis and Molecular Sensing (Southwest University), Ministry of Education, Chongqing 400715, China
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Cai M, Zhang G, Li C, Chen X, Cui H, Lin L. Pleurotus eryngii polysaccharide nanofiber containing pomegranate peel polyphenol/chitosan nanoparticles for control of E. coli O157:H7. Int J Biol Macromol 2021; 192:939-949. [PMID: 34662654 DOI: 10.1016/j.ijbiomac.2021.10.069] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2021] [Revised: 10/06/2021] [Accepted: 10/09/2021] [Indexed: 02/07/2023]
Abstract
Pomegranate peel polyphenols (PPP), which are natural, safe, and green antibacterial agents, were introduced and embedded in chitosan to form stable nanoparticles. The PPP@chitosan nanoparticles (PPP@CNPs) were further electrospun into nanofibers based on Pleurotus eryngii polysaccharide (PEP). The preferable distribution of particle size, polydispersity index, and zeta potential was realized through the addition of PPP at 3 mg/mL, which achieved the highest encapsulation rate of 23.71 ± 0.51%. The tensile strength and elongation at break of nanofibers reached 15.76 MPa and 0.69% with the addition of 1% PEP through electrospinning. The results of scanning electron microscopy (SEM) and atomic force microscopy (AFM) demonstrated that the addition of nanoparticles increased the diameter of PEP nanofibers from 148 nm to 163 nm, and the surface roughness of the fibers also increased. Meanwhile, the addition of nanoparticles improved the thermal stability of PEP nanofibers. PPP@CNPs/PEP nanofibers can inhibit the growth of E. coli O157:H7 on pork and cucumber surfaces during the five-days storage, and the inhibition rates were all above 95%. Besides, the nanofibers did not have any impact on the color and texture of foods.
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Affiliation(s)
- Meihong Cai
- School of Food and Biological Engineering, Jiangsu University, Zhenjiang 212013, China
| | - Gang Zhang
- School of Food and Biological Engineering, Jiangsu University, Zhenjiang 212013, China
| | - Changzhu Li
- State Key Laboratory of Utilization of Woody Oil Resource, Hunan Academy of Forestry, Changsha 410007, China
| | - Xiaochen Chen
- School of Food and Biological Engineering, Jiangsu University, Zhenjiang 212013, China
| | - Haiying Cui
- School of Food and Biological Engineering, Jiangsu University, Zhenjiang 212013, China.
| | - Lin Lin
- School of Food and Biological Engineering, Jiangsu University, Zhenjiang 212013, China; State Key Laboratory of Utilization of Woody Oil Resource, Hunan Academy of Forestry, Changsha 410007, China.
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Alexandraki S, Leontidis E. Towards the systematic design of multilayer O/W emulsions with tannic acid as an interfacial antioxidant. RSC Adv 2021; 11:23616-23626. [PMID: 35479771 PMCID: PMC9036574 DOI: 10.1039/d1ra03512f] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2021] [Accepted: 06/30/2021] [Indexed: 11/21/2022] Open
Abstract
This work discusses the possibility of designing multilayer oil-in-water emulsions to introduce the maximum possible amount of an antioxidant at the droplet interfaces for the optimal protection of a linseed oil core against oxidation, using a systematic three-step colloidal procedure. An antioxidant (here Tannic Acid - TA) is chosen and its interactions with a primary emulsifier (here Bovine Serum Albumin - BSA) and several polysaccharides are first examined in solution using turbidity measurements. As a second step, LbL deposition on solid surfaces is used to determine which of the polysaccharides to combine with BSA and tannic acid in a multilayer system to ensure maximum presence of tannic acid in the films. From UV-vis and polarization modulation infrared reflection-absorption (PM-IRRAS) spectroscopic measurements it is suggested that the best components to use in a multilayer emulsion droplet, together with BSA and TA, are chitosan and pectin. BSA, chitosan and pectin are subsequently used for the formation of three-layer linseed oil emulsions, and tannic acid is introduced into any of the three layers as an antioxidant. The effect of the exact placement of tannic acid on the oxidative stabilization of linseed oil is assessed by monitoring the fluorescence of Nile red, dissolved in the oil droplets, under the attack of radicals generated in the aqueous phase of the emulsion. From the results it appears that the three-stage procedure presented here can serve to identify successful combinations of interfacial components of multilayer emulsions. It is also concluded that the exact interfacial placement of the antioxidant plays an important role in the oxidative stabilization of the valuable oil core.
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Affiliation(s)
- Savvia Alexandraki
- Department of Chemistry, University of Cyprus P. O Box 20537 Nicosia 1678 Cyprus
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