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Search for "biopolymers" in Full Text gives 29 result(s) in Beilstein Journal of Nanotechnology.
Curcumin-loaded albumin submicron particles with potential as a cancer therapy: an in vitro study
Beilstein J. Nanotechnol. 2023, 14, 1127–1140, doi:10.3762/bjnano.14.93
- Na2CO3 solutions in the presence of albumin [26][27]. This approach has been shown to have high effectiveness for entrapping various biopolymers (e.g., proteins and hemoglobin) into carbonate particles before dissolving with EDTA to obtain pure biopolymer submicron particles. The CCD technique is a
- HSA-MPs reflects the negative charge of the albumin biopolymers [26]. In fact, in the cationic HSA-MPs with negative charges, CUR loading did not alter the zeta potential of CUR-HSA-MPs. Furthermore, particles with negative surface charge exhibit the enhanced permeability and retention (EPR) effect
Nanoarchitectonics to entrap living cells in silica-based systems: encapsulations with yolk–shell and sepiolite nanomaterials
Beilstein J. Nanotechnol. 2023, 14, 522–534, doi:10.3762/bjnano.14.43
- biocompatible nanocomposites by assembly to diverse biopolymers [5][27][28] that can be of crucial advantage for entrapment and viability of the cells. Initial entrapping trials using sepiolite clay derivatives have yielded encouraging results. Hence, this approach has been considered here [29]. On the other
- carcinogenicity and can be considered biocompatible, which allows its use in fields related to health and food, such as pharmaceuticals, biomedicine, and animal feed [34]. The clay modification with nanometre-scale biopolymers leads to bionanocomposite materials, which are considered as promising
- microorganisms with a clay mineral such as sepiolite and other silica-based porous materials as summarized in Figure 5. Silicate-based bionanocomposites derived from fibrous sepiolite silicate assembled with alginate and chitosan biopolymers have been tested as support of cyanobacteria and compared regarding the
Single-step extraction of small-diameter single-walled carbon nanotubes in the presence of riboflavin
Beilstein J. Nanotechnol. 2022, 13, 1564–1571, doi:10.3762/bjnano.13.130
- and discard toxic residual surfactants, which would otherwise limit biological applications. Biopolymers such as DNA and RNA have been widely proven to disperse SWCNTs. Nucleic acids even exhibit sequence-dependent wrapping around nanotubes with different chiralities [12][13][14][15]. The remarkable
Bioselectivity of silk protein-based materials and their bio-inspired applications
Beilstein J. Nanotechnol. 2022, 13, 902–921, doi:10.3762/bjnano.13.81
- interactions (e.g., van der Waals forces), and adhesive chemistry of biopolymers (various types of glues) [5]. On the level of tissues, multiple cell types work together to perform complex tasks, based on their hierarchical arrangement governing the exchange of information between different cell types. To
Micro- and nanotechnology in biomedical engineering for cartilage tissue regeneration in osteoarthritis
Beilstein J. Nanotechnol. 2022, 13, 363–389, doi:10.3762/bjnano.13.31
- . Cell culture in 3D matrices, unlike 2D cultures, provides the opportunity to include and recruit the necessary bioactive molecules for proper cell function [177]. In addition to biopolymers, which provide structural integrity and stability, ECM consists of protein motifs and full-length proteins
Bacterial safety study of the production process of hemoglobin-based oxygen carriers
Beilstein J. Nanotechnol. 2022, 13, 114–126, doi:10.3762/bjnano.13.8
- possible applications for these microparticles. For example, enzyme particles have been produced to be used as microreactors or biosensors [4]. This method can also represent a promising approach to the production of drug carriers by the precipitation of favorable biopolymers and corresponding surface
The role of deep eutectic solvents and carrageenan in synthesizing biocompatible anisotropic metal nanoparticles
Beilstein J. Nanotechnol. 2021, 12, 924–938, doi:10.3762/bjnano.12.69
- ]. These additional properties enabled carrageenan to emerge as a suitable alternative for other biocompatible molecules and biopolymers. Similar to DESs, carrageenan is also biocompatible. A good understanding of its role as a green component for synthesizing nanomaterial for biological applications is
Comprehensive review on ultrasound-responsive theranostic nanomaterials: mechanisms, structures and medical applications
Beilstein J. Nanotechnol. 2021, 12, 808–862, doi:10.3762/bjnano.12.64
Multilayer capsules made of weak polyelectrolytes: a review on the preparation, functionalization and applications in drug delivery
Beilstein J. Nanotechnol. 2020, 11, 508–532, doi:10.3762/bjnano.11.41
- biopolymers. The selection of a sacrificial template for capsule formation, the driving forces involved, the encapsulation of a variety of cargo and release based on different internal and external stimuli have also been addressed. We describe recent perspectives and obstacles of weak polyelectrolyte
- also been seen in natural biopolymers such as polypeptides, polynucleotides, lipids and polysaccharides as they are biodegradable under common physiological conditions via enzymatic and pH induced degradation [8]. The advantage of LbL-assembled capsules lies in the versatility of interactions (e.g
- to easy engineering of the properties. Although recent interest has been shown in exploring weak PE system with biopolymers for several applications, their unique responsiveness and advantages are not yet addressed in detail. With the emerging applications of weak PEs, it is imperative to accurately
High-tolerance crystalline hydrogels formed from self-assembling cyclic dipeptide
Beilstein J. Nanotechnol. 2019, 10, 1894–1901, doi:10.3762/bjnano.10.184
- conditions, including in the presence of charged biopolymers, extreme acid/base environments, and changing thermal conditions. Such high tolerance enables the crystalline hydrogels to be applied in the complex and harsh environments of electrochemistry. In addition, this study demonstrates that the self
- hydrogel with crystal features and close-knit three-dimensional network structures. Importantly, the C-WY hydrogel exhibited adjustable rheological properties, excellent stability, and high tolerance under various conditions, including in the presence of charged biopolymers (poly-ʟ-lysine (PLL), alginate
- of the C-WY hydrogel, charged biopolymers, including positively charged PLL and negatively charged HA and ALG, were selected for co-incubation with the hydrogel. The mechanical properties, including modulus (G’, G’’), shear-thinning behavior, and self-healing capability, improved after the
Layered double hydroxide/sepiolite hybrid nanoarchitectures for the controlled release of herbicides
Beilstein J. Nanotechnol. 2019, 10, 1679–1690, doi:10.3762/bjnano.10.163
- in vitro tests of MCPA release, confirming the improvement of retention properties. For a better control in the MCPA release, the hybrid nanoarchitectures were also combined with mixtures of alginate–zein biopolymers [36] to improve the retention properties. Results and Discussion MCPA-LDH/sepiolite
- prepared following the following procedure adapted from Alcântara and co-workers [36]: i) The required amount of alginate to achieve a final total concentration of 2% in biopolymers was dissolved in 83 mL of water previously heated at 60 °C; ii) the required amount of zein (17% of the total biopolymer mass
Multicomponent bionanocomposites based on clay nanoarchitectures for electrochemical devices
Beilstein J. Nanotechnol. 2019, 10, 1303–1315, doi:10.3762/bjnano.10.129
- , MWCNTs and poly(vinyl alcohol) [25], sepiolite, graphene nanoplatelets, and biopolymers (e.g., alginate, gelatine) [26] and cellulose or foams of microfibrillated cellulose and starch [47], which exhibit Young’s moduli in the range from 0.1 to 9 GPa. The high stiffness of these materials has been
- PBS at 30 °C, after which 93% of the initial power was retained. Conclusion This work reports a preliminary study showing the viability to integrate nanoclays, biopolymers, and graphene-based conducting components into homogeneous multifunctional nanoarchitectured materials. The presence of sepiolite
Liquid-crystalline nanoarchitectures for tissue engineering
Beilstein J. Nanotechnol. 2018, 9, 205–215, doi:10.3762/bjnano.9.22
- levels of biosystems, from simple biopolymers, subcellular organelles, single cells, and macroscopic tissues to bulky organs. Especially, biological tissues and cells have long been known to exhibit liquid crystal (LC) orders or their structural analogues. Inspired by those native architectures, there
- hydrophobic molecular interactions [25][26][27]. Even simple solutions of purified biopolymers and biocolloids, considered as rod-like particles, may exhibit multiple phases of self-organization depending on the rod concentration, ionic conditions, confinements, and shear forces [28][29]. Figure 1 shows an
- [36] and drug delivery systems [37]. For tissue regeneration, the mostly studied biomaterials are collagen and chitin, which are, respectively, protein-based and glucose-based biopolymers [38][39]. When denatured, collagen and chitin can be transformed into gelatin and chitosan, respectively, which
Humidity-dependent wound sealing in succulent leaves of Delosperma cooperi – An adaptation to seasonal drought stress
Beilstein J. Nanotechnol. 2018, 9, 175–186, doi:10.3762/bjnano.9.20
- healing phase can also be found individually [1]. Self-sealing and self-healing can be characterised by various functional principles, such as physical, chemical and/or biological principles, and can take place on one or more hierarchical levels, namely organs, tissues, cells and extracellular biopolymers
Cationic PEGylated polycaprolactone nanoparticles carrying post-operation docetaxel for glioma treatment
Beilstein J. Nanotechnol. 2017, 8, 1446–1456, doi:10.3762/bjnano.8.144
- from Sigma-Aldrich, USA. Chitosan (Protasan® G 113, MW < 200 kDa, deacetylation degree 75–90%) was purchased from FMC Biopolymers, Norway. HpC (Klucel™ hydroxypropylcellulose) was purchased from Ashland, USA. The model anticancer drug, docetaxel (purity 97%), was purchased from Fluka, Switzerland
The longstanding challenge of the nanocrystallization of 1,3,5-trinitroperhydro-1,3,5-triazine (RDX)
Beilstein J. Nanotechnol. 2017, 8, 452–466, doi:10.3762/bjnano.8.49
- biopolymers produced by ASES have been reported since the 1990s by Reverchon [55] and Dixon et al. [56]. Nevertheless, that technique can still be used on NC-based composites due to its polymer-like behavior. Solution-enhanced dispersion by supercritical fluid (SEDS) The solution-enhanced dispersion by
Template-controlled piezoactivity of ZnO thin films grown via a bioinspired approach
Beilstein J. Nanotechnol. 2017, 8, 296–303, doi:10.3762/bjnano.8.32
- composite nacre with its remarkable mechanical stability [37]. The growth of the inorganic, polycrystalline aragonite platelets is directed by biopolymers. This organic template leads to oriented attachment of the CaCO3 crystallites so that a preferred orientation along the c-axis arises [38]. According to
Intercalation and structural aspects of macroRAFT agents into MgAl layered double hydroxides
Beilstein J. Nanotechnol. 2016, 7, 2000–2012, doi:10.3762/bjnano.7.191
- matrices [5][6][7]. For instance, hybrid LDH involving amino acids, peptides, nucleosides, nucleic acids [8][9][10], biopolymers [11][12] and various drugs [13][14][15] were investigated to develop efficient systems for therapeutic applications [16][17]. Various dyes (sulfonated spyrospiran, methyl orange
3D solid supported inter-polyelectrolyte complexes obtained by the alternate deposition of poly(diallyldimethylammonium chloride) and poly(sodium 4-styrenesulfonate)
Beilstein J. Nanotechnol. 2016, 7, 197–208, doi:10.3762/bjnano.7.18
- polyelectrolytes, biopolymers – such as peptides, proteins and nucleic acids – colloidal particles, carbon nanotubes, and/or microgels [8][9][10], which confers to this method an almost unlimited chemical versatility. Even though the method frequently makes use of electrostatic interactions, the multilayers can
Chemical bath deposition of textured and compact zinc oxide thin films on vinyl-terminated polystyrene brushes
Beilstein J. Nanotechnol. 2016, 7, 102–110, doi:10.3762/bjnano.7.12
- deposition processes for ZnO nanostructures. For example, biopolymers can control the mineralization and the structure formation of inorganic materials in an aqueous environment. Biopolymeric templates and their structure-inducing properties are in the focus of many recent works and issued in a recent
Green and energy-efficient methods for the production of metallic nanoparticles
Beilstein J. Nanotechnol. 2015, 6, 2354–2376, doi:10.3762/bjnano.6.243
- synthesis of metallic NPs, using biopolymers such as chitosan can eliminate the need to use capping agents [56][86][99]. Catalysis: Selecting proper catalytic reactions can enhance the overall efficiency of the process by decreasing the activation energy and increasing product selectivity. These advantages
- stable in NaCl solution. However, they are aggregated in the presence of NaNO3 or NaH2PO4 [141]. Laudenslager et al. used CTS and carboxymethyl chitosan (CMC) as stabilizing agent for production of Pt, Au and Ag NPs. These two biopolymers gave similar size distributions, while CMC showed higher
Towards multifunctional inorganic materials: biopolymeric templates
Beilstein J. Nanotechnol. 2015, 6, 1698–1699, doi:10.3762/bjnano.6.172
- structure formation of inorganic components in an aqueous environment. Accordingly, composites made of inorganic solids (i.e., calcium phosphate or carbonate) and biopolymers are formed. Furthermore, the resulting combination of inorganic and bioorganic components yields biominerals with unique
Biopolymer colloids for controlling and templating inorganic synthesis
Beilstein J. Nanotechnol. 2014, 5, 2129–2138, doi:10.3762/bjnano.5.222
- Laura C. Preiss Katharina Landfester Rafael Munoz-Espi Max Planck Institute for Polymer Research, Ackermannweg 10, 55128 Mainz, Germany 10.3762/bjnano.5.222 Abstract Biopolymers and biopolymer colloids can act as controlling agents and templates not only in many processes in nature, but also in a
- wide range of synthetic approaches. Inorganic materials can be either synthesized ex situ and later incorporated into a biopolymer structuring matrix or grown in situ in the presence of biopolymers. In this review, we focus mainly on the latter case and distinguish between the following possibilities
- : (i) biopolymers as controlling agents of nucleation and growth of inorganic materials; (ii) biopolymers as supports, either as molecular supports or as carrier particles acting as cores of core–shell structures; and (iii) so-called “soft templates”, which include on one hand stabilized droplets
Controlling mechanical properties of bio-inspired hydrogels by modulating nano-scale, inter-polymeric junctions
Beilstein J. Nanotechnol. 2014, 5, 887–894, doi:10.3762/bjnano.5.101
- general approach for creating novel catecholaminergic derivatives of biopolymers such as alginate, hyaluronic acid, chitosan, dextran, and other synthetic or proteineous materials for a variety of applications. Quinone, an oxidized form of catechol, is reactive to nucleophiles such as hydroxyl, amine, and
Cyclodextrin-poly(ε-caprolactone) based nanoparticles able to complex phenolphthalein and adamantyl carboxylate
Beilstein J. Nanotechnol. 2014, 5, 651–657, doi:10.3762/bjnano.5.76
- Daniela Ailincai Helmut Ritter Centre of Advanced Research in Bionanoconjugates and Biopolymers, “Petru Poni” Institute of Macromolecular Chemistry of Romanian Academy, 41A Aleea Grigore Ghica Voda, 700487 Iasi, Romania Heinrich-Heine-Universität, Institut für Organische Chemie und Makromolekulare
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