Green preparation and characterization of size-controlled nanocrystalline cellulose via ultrasonic-assisted enzymatic hydrolysis

Cui, Shaoning; Zhang, Shuangling; Ge, Shengju; Xiong, Liu; Sun, Qingjie

doi:10.1016/j.indcrop.2016.01.019

Cited by 167 publications

(91 citation statements)

References 30 publications

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“…The results imply that cellulose particles tend to crush during ultrasonic processing. Similar results were obtained previously by Cui, Zhang, Ge, Xiong, and Sun (2016), Guo, Guo, Wang, andYin (2016), andSriBala, Chennuru, Mahapatra, andVinu (2016), showing that the size of cellulose samples was decreased via ultrasonic-assisted acid/enzyme/alkaline.…”

Section: Morphology and Particle Size Distributionsupporting

confidence: 90%

Preparation of cellulose with controlled molecular weight via ultrasonic treatment improves cholesterol‐binding capacity

Yan

Liu

et al. 2019

J Food Process Preserv

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The effect of ultrasonic treatment was evaluated to develop an efficient preparation method of cellulose with controllable molecular weight (Mw) and preferable functional properties. Our results showed that the physical approach could prominently reduce the mean Mw of cellulose from 68.07 to 6.82 KDa via 30‐hr ultrasonic treatment. The morphology and structure of the samples were characterized using Fourier transform infrared spectroscopy, X‐ray diffraction, scanning electron microscope (SEM), and laser diffraction, indicating a slight change in structure and notable modification in morphology caused by ultrasonic treatment. Interestingly, the ultrasonic‐treated cellulose exhibited much better physicochemical properties. For example, with a 30‐hr ultrasonic treatment, the cholesterol‐binding capacities of cellulose were increased about 2.42‐fold at pH 7.0 and 1.96‐fold at pH 2.0. The findings demonstrated that cellulose treated by ultrasonic processing could have a great potential for applications in the biomedical and food industries. Practical applications As a major source of insoluble fiber, cellulose has already been recommended for its possible benefits to human health, leading to numerous efforts for its applications in food industry and biomedical engineering. In this work, we successfully controlled Wm of cellulose via ultrasonic treatment, and the ultrasonic‐treated cellulose exhibited improved functional and physicochemical properties. The positive effect of ultrasound may be useful for functional modification and utilization of cellulose.

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Section: Morphology and Particle Size Distributionsupporting

confidence: 90%

Preparation of cellulose with controlled molecular weight via ultrasonic treatment improves cholesterol‐binding capacity

Yan

Liu

et al. 2019

J Food Process Preserv

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“…In Figure (a), the peaks observed in the region around 3380 cm −1 were assigned to the stretching vibrations of OH groups. The band around 1060 cm −1 was associated with C─O─C stretches of cellulose, which is the characteristic FTIR spectra of CNC, as shown in other study . After CNC was modified by KH792, two weak peaks of C─NH 2 were observed at 3292 and 3342 cm −1 , respectively, and the characteristic peak corresponding to the OH groups disappeared.…”

Section: Resultssupporting

confidence: 72%

Property improvement of nanocellulose‐reinforced proton exchange nanocomposite membrane coated with tetraethyl orthosilicate

Zhao

Wei

et al. 2019

J. Polym. Sci. Part A: Polym. Chem.

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Study on proton exchange membrane (PEM) with the aim toward excellent battery performance of PEM for fuel cells has attracted increasing attention. In this work, nanocellulose (CNC) aminated by KH792 noted as NN was prepared. CNC or NN/sulfophenylated poly(ether ether ketone ketone) (sPEEKK) nanocomposite membrane (SN) or (SNN) were produced by solution mixing. SNN was further coated with tetraethyl orthosilicate (TEOS) to obtain SNNT. The properties of sPEEKK, SN, SNN, and SNNT membranes were thoroughly investigated. The proton conductivity of SN4 was 0.22 S·cm−1 at 90 °C, while a proton conductivity of 0.30 S·cm−1 was obtained for SNN4, and an even higher value of 0.36 S·cm−1 at 90 °C was obtained for the TEOS‐coated SNN4 (SNN4T). Meanwhile, SNN4T showed high thermal stability, and its Td5 was as high as 318.2 °C. Furthermore, the composite membrane coated with TEOS also presented excellent oxidative stability. The mass of SNN2T after treated in Fenton agent for 1 h at 80 °C was still retained 96.2%, and it was not fully dissolved until 11 h. It was illustrated that aminated CNC/sPEEKK nanocomposite membranes coated with TEOS is a kind of promising materials as PEMs for fuel cells. © 2019 Wiley Periodicals, Inc. J. Polym. Sci., Part A: Polym. Chem. 2019, 57, 2190–2200

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“…13 Previous studies have examined the enzymatic hydrolysis of starch material using α-amylase and amyloglucosidase, [14][15][16][17][18] but the comparison between addition of these enzymes separately or in combination as hydrolyzing agents for algal starch has not been studied yet. The enzymatic hydrolysis of cellulosic material has been extensively investigated, [19][20][21][22][23] but there has been no attempt to describe the role of β-glucosidase in the hydrolysis of algal cellulose to glucose. Moreover, only a few studies have used mixed microalgae for biofuel production.…”

Section: Enzymatic Hydrolysis Of Algaementioning

confidence: 99%

Synergism of cellulases and amylolytic enzymes in the hydrolysis of microalgal carbohydrates

Shokrkar

Ebrahimi

2018

Biofuels Bioprod Bioref

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This study aimed to evaluate the synergism of cellulases and amylolytic enzymes in the hydrolysis of microalgal carbohydrates for bioethanol production. The effect of β‐glucosidase on the hydrolysis of algal cellulose, and the comparison between the effect of the addition of α‐amylase and amyloglucosidase separately or together on the hydrolysis of algal starch, have not been described previously. Results showed that β‐glucosidases promoted the enzymatic hydrolysis of algal cellulose as a result of the increase in the glucose production rate and the decrease in the inhibition by cellobiose. It was also beneficial to carry out the hydrolysis of algal starch using the mixture of α‐amylase and amyloglucosidase. The results obtained revealed that, in enzymatic hydrolysis experiments, simultaneous treatment with Celluclast 1.5 L, β‐glucosidase, α‐amylase, and amyloglucosidase was a promising strategy to reduce the hydrolysis time required to achieve a higher yield of glucose. Subsequently, fermentation of enzymatic hydrolysates of microalgae using Saccharomyces cerevisiae showed a yield of 0.126 g ethanol / g dried algae. © 2018 Society of Chemical Industry and John Wiley & Sons, Ltd

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Green preparation and characterization of size-controlled nanocrystalline cellulose via ultrasonic-assisted enzymatic hydrolysis

Cited by 167 publications

References 30 publications

Preparation of cellulose with controlled molecular weight via ultrasonic treatment improves cholesterol‐binding capacity

Preparation of cellulose with controlled molecular weight via ultrasonic treatment improves cholesterol‐binding capacity

Property improvement of nanocellulose‐reinforced proton exchange nanocomposite membrane coated with tetraethyl orthosilicate

Synergism of cellulases and amylolytic enzymes in the hydrolysis of microalgal carbohydrates

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