Creation of regenerated cellulose microspheres with diameter ranging from micron to millimeter for chromatography applications

The potential application of flavor encapsulation comprising regenerated porous cellulose particles (RPC) as core and carboxymethyl cellulose (CMC) as wall was investigated using L-menthol as a model flavor. RPC was prepared by sol-gel transition method and characterized by Fourier-transform infrared (FTIR) spectra, scanning electron microscopy (SEM) and micromeritics instruments. The results revealed that the RPC showed the particle size about 300-500 lm as well as the specific surface area about 8.7 m 2 /g. Based on high adsorptive capability, RPC could encapsulate menthol well and offer high encapsulation yield. The menthol content of RPC-menthol complexes (RPCM) was measured by gas chromatogram (GC) and showed the maximum content of about 12 % menthol with the encapsulation efficiency of 70 %. Besides, RPC provided comparable flavor retention as microcrystalline cellulose during storage under relative humidity of 80 % at 25°C. CMC was then used to modify RPCM and the construction of RPCM-CMC was confirmed by FTIR and SEM. The studies showed that CMC wall on RPCM surface had no influence on the menthol content and encapsulation efficiency in encapsulation process, but provided a significant increase in menthol retention during storage depending on the content of CMC in RPCM-CMC. Moreover, the stability test at various temperatures showed that both RPCM and RPCM-CMC were stable at room temperature and released flavor at temperatures common in food processing. It was concluded that RPC and CMC modification shows great potential as flavor encapsulant.

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“…The RPC particles were prepared according to the previous method [23]. A solution with NaOH/urea/H 2 O (7:12:81 by weight) was cooled to -12°C.…”

Section: Preparation Of Regenerated Porous Cellulose Particlesmentioning

confidence: 99%

An investigation of flavor encapsulation comprising of regenerated cellulose as core and carboxymethyl cellulose as wall

Tan

Dai

et al. 2013

Iran Polym J

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“…Cellulose is hydrophilic in nature and tends to absorb high proportion of water due to the large number of hydroxyl groups. The great amount of intermolecular hydrogen bonds in cellulose chains can be broken and modified for various purposes (Luo & Zhang 2010a;Ruan et al 2004;Zhang et al 2005). The hydroxyl groups in cellulose are the main focus in the modification of cellulose to be used in the formation of regenerated cellulose materials (Chen et al 2006;Yang et al 2001).…”

Section: Introductionmentioning

confidence: 99%

“…Cellulose dissolution process involves the breaking of inter and intra hydrogen bonds between the cellulose chains and destruction of crystals along the cellulose chains to produce cellulose solution (Luo & Zhang 2010a;Ruan et al 2004;Zhang et al 2005). An ecofriendly solvent has been introduced which consists of alkaline (LiOH or NaOH) and urea which able to dissolve cellulose at low temperature and shorter time .…”

Section: Introductionmentioning

confidence: 99%

Preparation and Characterizaiton of Fe3O4/Regenerated Cellulose Membrane

Kaco

Baharin

Zakaria³

et al. 2017

JSM

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“…Other applications relying on structured porous hydrogels, such as stationary phases for liquid chromatography [10][11][12][13], membranes or microfluid devices are other possible application ranges for highly structured cellulosic materials [14]. However, processability, and especially "printability" is strongly limited by the necessity of using an appropriate solvent to shape cellulose, as it is not melt-processable [15], and thus, the 3D printing of cellulose is mostly unexplored.…”

Section: Introductionmentioning

confidence: 99%

3D Printing Cellulose Hydrogels Using LASER Induced Thermal Gelation

Huber

Clucas

Vilmay

et al. 2018

JMMP

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A 3D printer was developed for the 3D printing of cellulose hydrogels using open source software and simple 3D printer hardware. Using a temperature-based sol-gel transition of cellulose dissolved in aqueous solutions of sodium hydroxide (NaOH) and urea, a three-dimensional gel can be created by moving a focused laser beam across a bath of the cellulose solution and lowering the print stage after every layer. A line width of 100-150 µm and layer thickness of 25 µm of the printed part could be achieved. No delamination between printed layers occurred and no additional support material was needed to create free hanging structures due to suspending the printed part in printing liquid. By adding cellulose powder to the solution, the gelation temperature, the gel strength and stiffness can be manipulated while maintaining a high internal porosity of the gel. A laser power of 100 mW was found to produce the highest quality print with an accurate representation of the previously designed part. Lower power settings (80 mW) produced insufficient gelation and as a result reduced print accuracy while higher power settings (120 mW) caused the gel to burn.

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Creation of regenerated cellulose microspheres with diameter ranging from micron to millimeter for chromatography applications

Cited by 103 publications

References 48 publications

An investigation of flavor encapsulation comprising of regenerated cellulose as core and carboxymethyl cellulose as wall

An investigation of flavor encapsulation comprising of regenerated cellulose as core and carboxymethyl cellulose as wall

Preparation and Characterizaiton of Fe3O4/Regenerated Cellulose Membrane

3D Printing Cellulose Hydrogels Using LASER Induced Thermal Gelation

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