1
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Lu Y, Mehling M, Huan S, Bai L, Rojas OJ. Biofabrication with microbial cellulose: from bioadaptive designs to living materials. Chem Soc Rev 2024; 53:7363-7391. [PMID: 38864385 DOI: 10.1039/d3cs00641g] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/13/2024]
Abstract
Nanocellulose is not only a renewable material but also brings functions that are opening new technological opportunities. Here we discuss a special subset of this material, in its fibrillated form, which is produced by aerobic microorganisms, namely, bacterial nanocellulose (BNC). BNC offers distinct advantages over plant-derived counterparts, including high purity and high degree of polymerization as well as crystallinity, strength, and water-holding capacity, among others. More remarkably, beyond classical fermentative protocols, it is possible to grow BNC on non-planar interfaces, opening new possibilities in the assembly of advanced bottom-up structures. In this review, we discuss the recent advances in the area of BNC-based biofabrication of three-dimensional (3D) designs by following solid- and soft-material templating. These methods are shown as suitable platforms to achieve bioadaptive constructs comprising highly interlocked biofilms that can be tailored with precise control over nanoscale morphological features. BNC-based biofabrication opens applications that are not possible by using traditional manufacturing routes, including direct ink writing of hydrogels. This review emphasizes the critical contributions of microbiology, colloid and surface science, as well as additive manufacturing in achieving bioadaptive designs from living matter. The future impact of BNC biofabrication is expected to take advantage of material and energy integration, residue utilization, circularity and social latitudes. Leveraging existing infrastructure, the scaleup of biofabrication routes will contribute to a new generation of advanced materials rooted in exciting synergies that combine biology, chemistry, engineering and material sciences.
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Affiliation(s)
- Yi Lu
- Bioproducts Institute, Department of Chemical and Biological Engineering, The University of British Columbia, Vancouver, BC, V6T 1Z3, Canada.
| | - Marina Mehling
- Bioproducts Institute, Department of Chemical and Biological Engineering, The University of British Columbia, Vancouver, BC, V6T 1Z3, Canada.
| | - Siqi Huan
- Key Laboratory of Bio-Based Material Science and Technology (Ministry of Education), Northeast Forestry University, Harbin 150040, China.
| | - Long Bai
- Key Laboratory of Bio-Based Material Science and Technology (Ministry of Education), Northeast Forestry University, Harbin 150040, China.
| | - Orlando J Rojas
- Bioproducts Institute, Department of Chemical and Biological Engineering, The University of British Columbia, Vancouver, BC, V6T 1Z3, Canada.
- Department of Chemistry, The University of British Columbia, Vancouver, BC, V6T 1Z1, Canada.
- Department of Wood Science, The University of British Columbia, Vancouver, BC, V6T 1Z4, Canada
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2
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Hosseini M, Babayekhorasani F, Guo Z, Liang K, Chen V, Spicer PT. Propulsion, deformation, and confinement response of hollow nanocellulose millimotors. J Colloid Interface Sci 2022; 628:435-445. [PMID: 35998466 DOI: 10.1016/j.jcis.2022.08.035] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2022] [Revised: 07/26/2022] [Accepted: 08/05/2022] [Indexed: 11/30/2022]
Abstract
HYPOTHESIS Micromotor and nanomotor particles are typically made using dense solid particles that can sediment or be trapped in confined flow environments. Creation of much larger motors should be possible if a very low-density system is used with sufficient strength to carry liquid and still experience propulsive motion. Light, dense millimotors should also be able to deform more than dense solid ones in constrictions. EXPERIMENTS Millimotors are created from permeable capsules of bacterial cellulose that are coated with catalse-containing metal-organic frameworks, enabling reactive propulsion in aqueous hydrogen peroxide. The motion of the motors is quantified using particle tracking and the deformation is measured using microcapillary compression and flow through confined channels. FINDINGS Two different propulsion mechanisms are dominant depending on the motor surface chemistry: oxygen bubbles are expelled from hydrophilic millimotors, driving motion via recoil force and buoyancy. Hydrophobic millimotors remain attached to growing bubbles and move by buoyancy alone. Despite their large size, the low-density capsules compress to pass through contractions that would impede and be blocked by solid motors. The sparse structure but relatively large size of the motors enables them to transport significant volumes of liquid using minimal solid mass as a motor support structure.
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Affiliation(s)
- Maryam Hosseini
- School of Chemical Engineering, University of New South Wales, Sydney, NSW, Australia
| | | | - Ziyi Guo
- School of Chemical Engineering, University of New South Wales, Sydney, NSW, Australia
| | - Kang Liang
- School of Chemical Engineering, University of New South Wales, Sydney, NSW, Australia
| | - Vicki Chen
- School of Chemical Engineering, University of Queensland, Queensland 4072, Australia
| | - Patrick T Spicer
- School of Chemical Engineering, University of New South Wales, Sydney, NSW, Australia.
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3
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Shi H, Hossain KMZ, Califano D, Callaghan C, Ekanem EE, Scott JL, Mattia D, Edler KJ. Stable Cellulose Nanofibril Microcapsules from Pickering Emulsion Templates. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2022; 38:3370-3379. [PMID: 35261240 PMCID: PMC9007535 DOI: 10.1021/acs.langmuir.1c03025] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 11/12/2021] [Revised: 02/22/2022] [Indexed: 06/14/2023]
Abstract
Electrostatic attractions are essential in any complex formation between the nanofibrils of the opposite charge for a specific application, such as microcapsule production. Here, we used cationized cellulose nanofibril (CCNF)-stabilized Pickering emulsions (PEs) as templates, and the electrostatic interactions were induced by adding oxidized cellulose nanofibrils (OCNFs) at the oil-water interface to form microcapsules (MCs). The oppositely charged cellulose nanofibrils enhanced the solidity of interfaces, allowing the encapsulation of Nile red (NR) in sunflower oil droplets. Microcapsules exhibited a low and controlled release of NR at room temperature. Furthermore, membrane emulsification was employed to scale up the preparation of microcapsules with sunflower oil (SFO) encapsulated by CCNF/OCNF complex networks.
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Affiliation(s)
- Hui Shi
- Department
of Chemistry, University of Bath, Claverton Down, Bath BA2
7AY, U.K.
- Centre
for Sustainable Chemical Technologies, University
of Bath, Claverton Down, Bath BA2 7AY, U.K.
| | - Kazi M. Zakir Hossain
- Department
of Chemistry, University of Bath, Claverton Down, Bath BA2
7AY, U.K.
- Centre
for Sustainable Chemical Technologies, University
of Bath, Claverton Down, Bath BA2 7AY, U.K.
| | - Davide Califano
- Department
of Chemistry, University of Bath, Claverton Down, Bath BA2
7AY, U.K.
- Centre
for Sustainable Chemical Technologies, University
of Bath, Claverton Down, Bath BA2 7AY, U.K.
| | - Ciaran Callaghan
- Centre
for Sustainable Chemical Technologies, University
of Bath, Claverton Down, Bath BA2 7AY, U.K.
- Department
of Chemical Engineering, University of Bath, Claverton Down, Bath BA2
7AY, U.K.
| | - Ekanem E. Ekanem
- Department
of Chemical Engineering, University of Bath, Claverton Down, Bath BA2
7AY, U.K.
| | - Janet L. Scott
- Department
of Chemistry, University of Bath, Claverton Down, Bath BA2
7AY, U.K.
- Centre
for Sustainable Chemical Technologies, University
of Bath, Claverton Down, Bath BA2 7AY, U.K.
| | - Davide Mattia
- Department
of Chemical Engineering, University of Bath, Claverton Down, Bath BA2
7AY, U.K.
| | - Karen J. Edler
- Department
of Chemistry, University of Bath, Claverton Down, Bath BA2
7AY, U.K.
- Centre
for Sustainable Chemical Technologies, University
of Bath, Claverton Down, Bath BA2 7AY, U.K.
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4
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Le TNQ, Tran NN, Escribà-Gelonch M, Serra CA, Fisk I, McClements DJ, Hessel V. Microfluidic encapsulation for controlled release and its potential for nanofertilisers. Chem Soc Rev 2021; 50:11979-12012. [PMID: 34515721 DOI: 10.1039/d1cs00465d] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Nanotechnology is increasingly being utilized to create advanced materials with improved or new functional attributes. Converting fertilizers into a nanoparticle-form has been shown to improve their efficacy but the current procedures used to fabricate nanofertilisers often have poor reproducibility and flexibility. Microfluidic systems, on the other hand, have advantages over traditional nanoparticle fabrication methods in terms of energy and materials consumption, versatility, and controllability. The increased controllability can result in the formation of nanoparticles with precise and complex morphologies (e.g., tuneable sizes, low polydispersity, and multi-core structures). As a result, their functional performance can be tailored to specific applications. This paper reviews the principles, formation, and applications of nano-enabled delivery systems fabricated using microfluidic approaches for the encapsulation, protection, and release of fertilizers. Controlled release can be achieved using two main routes: (i) nutrients adsorbed on nanosupports and (ii) nutrients encapsulated inside nanostructures. We aim to highlight the opportunities for preparing a new generation of highly versatile nanofertilisers using microfluidic systems. We will explore several main characteristics of microfluidically prepared nanofertilisers, including droplet formation, shell fine-tuning, adsorbate fine-tuning, and sustained/triggered release behavior.
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Affiliation(s)
- Tu Nguyen Quang Le
- School of Chemical Engineering and Advanced Materials, The University of Adelaide, Adelaide, SA 5005, Australia. .,Faculty of Chemical Engineering, Ho Chi Minh City University of Technology, Ho Chi Minh City, Vietnam
| | - Nam Nghiep Tran
- School of Chemical Engineering and Advanced Materials, The University of Adelaide, Adelaide, SA 5005, Australia. .,School of Chemical Engineering, Can Tho University, Can Tho City, Vietnam
| | - Marc Escribà-Gelonch
- Higher Polytechnic Engineering School, University of Lleida, Igualada (Barcelona), 08700, Spain
| | - Christophe A Serra
- Université de Strasbourg, CNRS, Institut Charles Sadron UPR 22, F-67000 Strasbourg, France
| | - Ian Fisk
- Division of Food, Nutrition and Dietetics, School of Biosciences, University of Nottingham, Loughborough, LE12 5RD, UK.,The University of Adelaide, North Terrace, Adelaide, South Australia, Australia
| | | | - Volker Hessel
- School of Chemical Engineering and Advanced Materials, The University of Adelaide, Adelaide, SA 5005, Australia. .,School of Engineering, University of Warwick, Library Rd, Coventry, UK
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5
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Carvalho JPF, Silva ACQ, Silvestre AJD, Freire CSR, Vilela C. Spherical Cellulose Micro and Nanoparticles: A Review of Recent Developments and Applications. NANOMATERIALS (BASEL, SWITZERLAND) 2021; 11:2744. [PMID: 34685185 PMCID: PMC8537411 DOI: 10.3390/nano11102744] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/20/2021] [Revised: 10/07/2021] [Accepted: 10/09/2021] [Indexed: 12/27/2022]
Abstract
Cellulose, the most abundant natural polymer, is a versatile polysaccharide that is being exploited to manufacture innovative blends, composites, and hybrid materials in the form of membranes, films, coatings, hydrogels, and foams, as well as particles at the micro and nano scales. The application fields of cellulose micro and nanoparticles run the gamut from medicine, biology, and environment to electronics and energy. In fact, the number of studies dealing with sphere-shaped micro and nanoparticles based exclusively on cellulose (or its derivatives) or cellulose in combination with other molecules and macromolecules has been steadily increasing in the last five years. Hence, there is a clear need for an up-to-date narrative that gathers the latest advances on this research topic. So, the aim of this review is to portray some of the most recent and relevant developments on the use of cellulose to produce spherical micro- and nano-sized particles. An attempt was made to illustrate the present state of affairs in terms of the go-to strategies (e.g., emulsification processes, nanoprecipitation, microfluidics, and other assembly approaches) for the generation of sphere-shaped particles of cellulose and derivatives thereof. A concise description of the application fields of these cellulose-based spherical micro and nanoparticles is also presented.
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Affiliation(s)
| | | | | | | | - Carla Vilela
- Department of Chemistry, CICECO—Aveiro Institute of Materials, University of Aveiro, 3810-193 Aveiro, Portugal; (J.P.F.C.); (A.C.Q.S.); (A.J.D.S.); (C.S.R.F.)
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6
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Kim J, Hyun J. Soft Magnetostrictive Actuator String with Cellulose Nanofiber Skin. ACS APPLIED MATERIALS & INTERFACES 2021; 13:43904-43913. [PMID: 34495638 DOI: 10.1021/acsami.1c09410] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
The formation of cellulose nanofibrous skin with a colloidal suspension is challenging due to the diffusion of colloidal particles and bacteria to the bulk and a limited supply of oxygen for bacteria in the liquid culture environment. A composite-actuating string was fabricated with magnetic nanoparticles (MNPs) and Gluconacetobacter xylinus in a solid matrix of hydrophobic microparticles. G. xylinus synthesizes a dense skin layer of cellulose nanofibers enclosing MNPs in the solid matrix to form an actuator string responsive to an external magnetic field. The nanofibrous actuator string is transformable to fit the diverse shapes of tubular structures in cross section due to its softness and plastic deformability, which reduce friction and stress against the walls of organ tissues. The nanofibrous skin string is bendable at an acute angle by magnetic actuation and is applicable as an endoscopic guidewire to reach a target deep inside a model kidney structure.
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Affiliation(s)
- Jaehwan Kim
- Department of Biosystems and Biomaterials Science and Engineering, Seoul National University, Seoul 08826, Republic of Korea
- Department of Agriculture, Forestry, and Bioresources, Seoul National University, Seoul 08826, Republic of Korea
| | - Jinho Hyun
- Department of Biosystems and Biomaterials Science and Engineering, Seoul National University, Seoul 08826, Republic of Korea
- Department of Agriculture, Forestry, and Bioresources, Seoul National University, Seoul 08826, Republic of Korea
- Research Institute of Agriculture and Life Sciences, Seoul National University, Seoul 08826, Republic of Korea
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7
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Kim J, Shin S, Hyun J. Controlled production of soft magnetic hydrogel beads by biosynthesis of bacterial cellulose. J IND ENG CHEM 2021. [DOI: 10.1016/j.jiec.2021.05.016] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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8
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Pepicelli M, Binelli MR, Studart AR, Rühs PA, Fischer P. Self-Grown Bacterial Cellulose Capsules Made through Emulsion Templating. ACS Biomater Sci Eng 2021; 7:3221-3228. [PMID: 34190548 DOI: 10.1021/acsbiomaterials.1c00399] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Microcapsules made of synthetic polymers are used for the release of cargo in agriculture, food, and cosmetics but are often difficult to be degraded in the environment. To diminish the environmental impact of microcapsules, we use the biofilm-forming ability of bacteria to grow cellulose-based biodegradable microcapsules. The present work focuses on the design and optimization of self-grown bacterial cellulose capsules. In contrast to their conventionally attributed pathogenic role, bacteria and their self-secreted biofilms represent a multifunctional class of biomaterials. The bacterial strain used in this work, Gluconacetobacter xylinus, is able to survive and proliferate in various environmental conditions by forming biofilms as part of its lifecycle. Cellulose is one of the main components present in these self-secreted protective layers and is known for its outstanding mechanical properties. Provided enough nutrients and oxygen, these bacteria and the produced cellulose are able to self-assemble at the interface of any given three-dimensional template and could be used as a novel stabilization concept for water-in-oil emulsions. Using a microfluidic setup for controlled emulsification, we demonstrate that bacterial cellulose capsules can be produced with tunable size and monodispersity. Furthermore, we show that successful droplet stabilization and bacterial cellulose formation are functions of the bacteria concentration, droplet size, and surfactant type. The obtained results represent the first milestone in the production of self-assembled biodegradable cellulose capsules to be used in a vast range of applications such as flavor, fragrance, agrochemicals, nutrients, and drug encapsulation.
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Affiliation(s)
- Martina Pepicelli
- Institute of Food, Nutrition and Health, ETH Zurich, Zurich 8092, Switzerland
| | - Marco R Binelli
- Complex Materials, Department of Materials, ETH Zurich, Zurich 8093, Switzerland
| | - André R Studart
- Complex Materials, Department of Materials, ETH Zurich, Zurich 8093, Switzerland
| | - Patrick A Rühs
- Complex Materials, Department of Materials, ETH Zurich, Zurich 8093, Switzerland
| | - Peter Fischer
- Institute of Food, Nutrition and Health, ETH Zurich, Zurich 8092, Switzerland
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9
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Birnbaum DP, Manjula‐Basavanna A, Kan A, Tardy BL, Joshi NS. Hybrid Living Capsules Autonomously Produced by Engineered Bacteria. ADVANCED SCIENCE (WEINHEIM, BADEN-WURTTEMBERG, GERMANY) 2021; 8:2004699. [PMID: 34141524 PMCID: PMC8188213 DOI: 10.1002/advs.202004699] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 12/04/2020] [Revised: 03/10/2021] [Indexed: 06/12/2023]
Abstract
Bacterial cellulose (BC) has excellent material properties and can be produced sustainably through simple bacterial culture, but BC-producing bacteria lack the extensive genetic toolkits of model organisms such as Escherichia coli (E. coli). Here, a simple approach is reported for producing highly programmable BC materials through incorporation of engineered E. coli. The acetic acid bacterium Gluconacetobacter hansenii is cocultured with engineered E. coli in droplets of glucose-rich media to produce robust cellulose capsules, which are then colonized by the E. coli upon transfer to selective lysogeny broth media. It is shown that the encapsulated E. coli can produce engineered protein nanofibers within the cellulose matrix, yielding hybrid capsules capable of sequestering specific biomolecules from the environment and enzymatic catalysis. Furthermore, capsules are produced which can alter their own bulk physical properties through enzyme-induced biomineralization. This novel system uses a simple fabrication process, based on the autonomous activity of two bacteria, to significantly expand the functionality of BC-based living materials.
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Affiliation(s)
- Daniel P. Birnbaum
- John A. Paulson School of Engineering and Applied SciencesHarvard UniversityCambridgeMA02138USA
- Department of Chemistry and Chemical BiologyNortheastern UniversityBostonMA02115USA
- Wyss Institute for Biologically Inspired EngineeringHarvard UniversityBostonMA02115USA
| | - Avinash Manjula‐Basavanna
- Department of Chemistry and Chemical BiologyNortheastern UniversityBostonMA02115USA
- Wyss Institute for Biologically Inspired EngineeringHarvard UniversityBostonMA02115USA
| | - Anton Kan
- Wyss Institute for Biologically Inspired EngineeringHarvard UniversityBostonMA02115USA
| | - Blaise L. Tardy
- Department of Bioproducts and BiosystemsAalto UniversityEspooFI‐00076Finland
| | - Neel S. Joshi
- Department of Chemistry and Chemical BiologyNortheastern UniversityBostonMA02115USA
- Wyss Institute for Biologically Inspired EngineeringHarvard UniversityBostonMA02115USA
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10
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Dhand AP, Poling-Skutvik R, Osuji CO. Simple production of cellulose nanofibril microcapsules and the rheology of their suspensions. SOFT MATTER 2021; 17:4517-4524. [PMID: 33710229 DOI: 10.1039/d1sm00225b] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
Microcapsules are commonly used in applications ranging from therapeutics to personal care products due to their ability to deliver encapsulated species through their porous shells. Here, we demonstrate a simple and scalable approach to fabricate microcapsules with porous shells by interfacial complexation of cellulose nanofibrils and oleylamine, and investigate the rheological properties of suspensions of the resulting microcapsules. The suspensions of neat capsules are viscous liquids whose viscosity increases with volume fraction according to a modified Kreiger-Dougherty relation with a maximum packing fraction of 0.74 and an intrinsic viscosity of 4.1. When polyacrylic acid (PAA) is added to the internal phase of the microcapsules, however, the suspensions become elastic and display yield stresses with power-law dependencies on capsule volume fraction and PAA concentration. The elasticity appears to originate from associative microcapsule interactions induced by PAA that is contained within and incorporated into the microcapsule shell. These results demonstrate that it is possible to tune the rheological properties of microcapsule suspensions by changing only the composition of the internal phase, thereby providing a novel method to tailor complex fluid rheology.
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Affiliation(s)
- Abhishek P Dhand
- Department of Chemical and Biomolecular Engineering, University of Pennsylvania, Philadelphia, PA 19104, USA.
| | - Ryan Poling-Skutvik
- Department of Chemical Engineering, University of Rhode Island, Kingston, RI 02881, USA.
| | - Chinedum O Osuji
- Department of Chemical and Biomolecular Engineering, University of Pennsylvania, Philadelphia, PA 19104, USA.
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11
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Mu XT, Li Y, Ju XJ, Yang XL, Xie R, Wang W, Liu Z, Chu LY. Microfluidic Fabrication of Structure-Controlled Chitosan Microcapsules via Interfacial Cross-Linking of Droplet Templates. ACS APPLIED MATERIALS & INTERFACES 2020; 12:57514-57525. [PMID: 33301686 DOI: 10.1021/acsami.0c14656] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
In this work, a simple and flexible method for the fabrication of chitosan microcapsules with controllable structures and functions via the interfacial cross-linking reaction of the water-in-oil (W/O) emulsion templates is developed. The interfacial cross-linking reactions of chitosan and terephthalaldehyde (TPA) in W/O emulsion templates are comprehensively studied. The interfacial cross-linking reactions of the droplet templates in both batchwise and continuous conditions are studied. A poly(dimethylsiloxane) (PDMS) droplet-capture microfluidic chip is fabricated to investigate the interfacial reaction in continuous conditions online. In this study, the size and shell thickness of the microcapsules are affected by the preparation condition, such as the template size, emulsifier concentration, TPA concentration, and cross-linking time. Moreover, the size and shell thickness changes of chitosan microcapsules prepared in continuous conditions are much faster than those prepared in batchwise conditions. By regulating the preparation parameters, the microcapsules with controllable structures are fabricated in both batchwise and continuous conditions. The drug release behaviors of the microcapsules with controllable structures are studied. Furthermore, by adding magnetic nanoparticles to the aqueous solution, magnetic-responsive microcapsules are fabricated easily. This work provides valuable guidance for the controllable fabrication of chitosan microcapsules with designed structures and functions via single emulsion templates.
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Affiliation(s)
- Xiao-Ting Mu
- School of Chemical Engineering, Sichuan University, Chengdu, Sichuan 610065, P. R. China
| | - Yao Li
- School of Chemical Engineering, Sichuan University, Chengdu, Sichuan 610065, P. R. China
| | - Xiao-Jie Ju
- School of Chemical Engineering, Sichuan University, Chengdu, Sichuan 610065, P. R. China
- State Key Laboratory of Polymer Materials Engineering, Sichuan University, Chengdu, Sichuan 610065, P. R. China
| | - Xiu-Lan Yang
- School of Chemical Engineering, Sichuan University, Chengdu, Sichuan 610065, P. R. China
| | - Rui Xie
- School of Chemical Engineering, Sichuan University, Chengdu, Sichuan 610065, P. R. China
- State Key Laboratory of Polymer Materials Engineering, Sichuan University, Chengdu, Sichuan 610065, P. R. China
| | - Wei Wang
- School of Chemical Engineering, Sichuan University, Chengdu, Sichuan 610065, P. R. China
- State Key Laboratory of Polymer Materials Engineering, Sichuan University, Chengdu, Sichuan 610065, P. R. China
| | - Zhuang Liu
- School of Chemical Engineering, Sichuan University, Chengdu, Sichuan 610065, P. R. China
- State Key Laboratory of Polymer Materials Engineering, Sichuan University, Chengdu, Sichuan 610065, P. R. China
| | - Liang-Yin Chu
- School of Chemical Engineering, Sichuan University, Chengdu, Sichuan 610065, P. R. China
- State Key Laboratory of Polymer Materials Engineering, Sichuan University, Chengdu, Sichuan 610065, P. R. China
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12
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Leonaviciene G, Leonavicius K, Meskys R, Mazutis L. Multi-step processing of single cells using semi-permeable capsules. LAB ON A CHIP 2020; 20:4052-4062. [PMID: 33006353 DOI: 10.1039/d0lc00660b] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Droplet microfluidics technology provides a powerful approach to isolate and process millions of single cells simultaneously. Despite many exciting applications that have emerged based on this technology, workflows based on multi-step operations, including molecular biology and cell-based phenotypic screening assays, cannot be easily adapted to droplet format. Here, we present a microfluidics-based technique to isolate single cells, or biological samples, into semi-permeable hydrogel capsules and perform multi-step biological workflows on thousands to millions of individual cells simultaneously. The biochemical reactions are performed by changing the aqueous buffer surrounding the capsules, without needing sophisticated equipment. The semi-permeable nature of the capsules' shell retains large encapsulated biomolecules (such as genome) while allowing smaller molecules (such as proteins) to passively diffuse. In contrast to conventional hydrogel bead assays, the approach presented here improves bacterial cell retention during multi-step procedures as well as the efficiency of biochemical reactions. We showcase two examples of capsule use for single genome amplification of bacteria, and expansion of individual clones into isogenic microcolonies for later screening for biodegradable plastic production.
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Affiliation(s)
- Greta Leonaviciene
- Institute of Biotechnology, Life Science Centre, Vilnius University, 7 Sauletekio av., Vilnius, LT-10257, Lithuania.
| | - Karolis Leonavicius
- Institute of Biotechnology, Life Science Centre, Vilnius University, 7 Sauletekio av., Vilnius, LT-10257, Lithuania.
| | - Rolandas Meskys
- Institute of Biochemistry, Life Science Centre, Vilnius University, 7 Sauletekio av., Vilnius, LT-10257, Lithuania
| | - Linas Mazutis
- Institute of Biotechnology, Life Science Centre, Vilnius University, 7 Sauletekio av., Vilnius, LT-10257, Lithuania.
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13
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Lombardo S, Villares A. Engineered Multilayer Microcapsules Based on Polysaccharides Nanomaterials. Molecules 2020; 25:E4420. [PMID: 32993007 PMCID: PMC7582779 DOI: 10.3390/molecules25194420] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2020] [Revised: 09/23/2020] [Accepted: 09/24/2020] [Indexed: 12/18/2022] Open
Abstract
The preparation of microcapsules composed by natural materials have received great attention, as they represent promising systems for the fabrication of micro-containers for controlled loading and release of active compounds, and for other applications. Using polysaccharides as the main materials is receiving increasing interest, as they constitute the main components of the plant cell wall, which represent an ideal platform to mimic for creating biocompatible systems with specific responsive properties. Several researchers have recently described methods for the preparation of microcapsules with various sizes and properties using cell wall polysaccharide nanomaterials. Researchers have focused mostly in using cellulose nanomaterials as structural components in a bio-mimetic approach, as cellulose constitutes the main structural component of the plant cell wall. In this review, we describe the microcapsules systems presented in the literature, focusing on the works where polysaccharide nanomaterials were used as the main structural components. We present the methods and the principles behind the preparation of these systems, and the interactions involved in stabilizing the structures. We show the specific and stimuli-responsive properties of the reported microcapsules, and we describe how these characteristics can be exploited for specific applications.
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Wang M, Li R, Feng X, Dang C, Dai F, Yin X, He M, Liu D, Qi H. Cellulose Nanofiber-Reinforced Ionic Conductors for Multifunctional Sensors and Devices. ACS APPLIED MATERIALS & INTERFACES 2020; 12:27545-27554. [PMID: 32458678 DOI: 10.1021/acsami.0c04907] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Ionic conductors are normally prepared from water-based materials in the solid form and feature a combination of intrinsic transparency and stretchability. The sensitivity toward humidity inevitably leads to dehydration or deliquescence issues, which will limit the long-term use of ionic conductors. Here, a novel ionic conductor based on natural bacterial cellulose (BC) and polymerizable deep eutectic solvents (PDESs) is developed for addressing the abovementioned drawbacks. The superstrong three-dimensional nanofiber network and strong interfacial interaction endow the BC-PDES ionic conductor with significantly enhanced mechanical properties (tensile strength of 8 × 105 Pa and compressive strength of 6.68 × 106 Pa). Furthermore, compared to deliquescent PDESs, BC-PDES composites showed obvious mechanical stability, which maintain good mechanical properties even when exposed to high humidity for 120 days. These materials were demonstrated to possess multiple sensitivity to external stimulus, such as strain, pressure, bend, and temperature. Thus, they can easily serve as supersensitive sensors to recognize physical activity of humans such as limb movements, throat vibrations, and handwriting. Moreover, the BC-PDES ionic conductors can be used in flexible, patterned electroluminescent devices. This work provides an efficient strategy for making cellulose-based sustainable and functional ionic conductors which have broad application in artificial flexible electronics and other products.
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Affiliation(s)
- Ming Wang
- State Key Laboratory of Pulp and Paper Engineering, South China University of Technology, Guangzhou 510641, China
| | - Renai Li
- State Key Laboratory of Pulp and Paper Engineering, South China University of Technology, Guangzhou 510641, China
| | - Xiao Feng
- State Key Laboratory of Pulp and Paper Engineering, South China University of Technology, Guangzhou 510641, China
| | - Chao Dang
- State Key Laboratory of Pulp and Paper Engineering, South China University of Technology, Guangzhou 510641, China
| | - Fanglin Dai
- State Key Laboratory of Pulp and Paper Engineering, South China University of Technology, Guangzhou 510641, China
| | - Xueqiong Yin
- Provincial Fine Chemical Engineering Research Center, Hainan University, Haikou, Hainan 570228, P. R. China
| | - Minghui He
- State Key Laboratory of Pulp and Paper Engineering, South China University of Technology, Guangzhou 510641, China
| | - Detao Liu
- State Key Laboratory of Pulp and Paper Engineering, South China University of Technology, Guangzhou 510641, China
| | - Haisong Qi
- State Key Laboratory of Pulp and Paper Engineering, South China University of Technology, Guangzhou 510641, China
- Guangdong Engineering Research Center for Green Fine Chemicals, Guangzhou 510640, China
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15
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Kaganyuk M, Mohraz A. Shear-induced deformation and interfacial jamming of solid-stabilized droplets. SOFT MATTER 2020; 16:4431-4443. [PMID: 32322857 DOI: 10.1039/d0sm00374c] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/21/2023]
Abstract
We use rheo-microscopy to directly investigate the dynamics of solid-stabilized droplets subjected to shear flow of a surrounding bulk fluid. In our system, the stabilizing particles are weakly attractive through the continuous fluid phase and along the droplet interface. Under shear, droplets stabilized by these particles at near-complete surface coverage exhibit a number of previously unforeseen phenomena, including negative-then-positive deviations from the predictions of Taylor and the behavior of bare droplets, evolution toward spherocylindrical shapes, and an earlier onset of rupture than their bare counterparts, which we explain in light of the weak attractive interparticle interactions along the droplet interface. We also demonstrate the formation of long-lived anisotropic particle-coated droplets by flow cessation, and provide evidence that this is due to the formation of a jammed, disordered particle network along the interface at surface coverage lower than the starting conditions. Importantly, these newly observed phenomena are shown to be sensitive to the droplets' initial surface coverage. Our findings provide new technologically-relevant insights into the physics of particle-coated droplets under fluidic or other external stresses, and introduce avenues for future research to better understand the roles of interparticle interactions and surface coverage in mediating the interfacial rheology of particle-laden interfaces and solid-stabilized emulsions.
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Affiliation(s)
- M Kaganyuk
- Department of Chemical and Biomolecular Engineering, University of California, Irvine, California 92697-2580, USA.
| | - A Mohraz
- Department of Chemical and Biomolecular Engineering, University of California, Irvine, California 92697-2580, USA.
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