From molasses to syrup: Engineering ultrafiltration membrane surface to improve invertase reusability

Decolorization is important for wastewater treatment and product purification. Compared to an adsorption method using activated carbon and ion-exchange resin, nanofiltration (NF) is a sustainable technique for decolorization because it enables dyes/pigments recovery (rather than disposal as waste) via a simpler and greener approach. However, the large-scale application of NF for decolorization is limited by insufficient separation selectivity and operational stability of the commercially available NF membranes as well as incomplete NF-based decolorization processes. Many efforts, therefore, have been dedicated to developing high-performance NF membranes for decolorization and establishing an integrated process for increasing resource recovery efficiency. This review summarizes recent progress on NF membrane fabrication and applications in dye wastewater treatment and bioproduct manufacturing. Besides, the existing challenges and future research directions in NF for decolorization are pointed out. This review is expected to provide an overview and guidance on the development of eligible NF membranes and processes for decolorization to achieve cleaner production.

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Section: Applications Of Nf Membrane For Decolorizationmentioning

confidence: 99%

Nanofiltration for Decolorization: Membrane Fabrication, Applications and Challenges

Cao

Chen

Feng

et al. 2020

Ind. Eng. Chem. Res.

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“…Combining the efficient enzymatic reactions with the membrane separation technology, enzyme membrane reactors (EMRs) have been widely applied in oligosaccharides production in recent years. − In addition, membrane fouling is also an efficient strategy for enzyme immobilization without complicated chemical modification compared with other immobilization methods . Best of all, the membrane of EMR not only acts as the place where the enzyme biochemical reaction takes place but also performs as a physical barrier allowing permeation of molecules under a certain size .…”

Section: Introductionmentioning

confidence: 99%

“…22−29 In addition, membrane fouling is also an efficient strategy for enzyme immobilization without complicated chemical modification compared with other immobilization methods. 22 Best of all, the membrane of EMR not only acts as the place where the enzyme biochemical reaction takes place but also performs as a physical barrier allowing permeation of molecules under a certain size. 30 Thus, an integrated enzymatic catalysis and product separation process may simultaneously achieve chitinase reuse and high chitin oligosaccharides production, which is of great significance and high commercial value.…”

Section: ■ Introductionmentioning

confidence: 99%

Construction of an Immobilized Enzyme Membrane Reactor for Efficient and Sustainable Conversion of Ionic Liquid/Ultrasound-Pretreated Chitin

Mao

2022

ACS Sustainable Chem. Eng.

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In this study, an immobilized enzyme membrane reactor (EMR) was constructed and applied into the hydrolysis of chitin for the first time. Chitinase from Streptomyces albolongus ATCC 27414 (SaChiA4) was immobilized on the support layer of the regenerated cellulose ultrafiltration membrane (1 kDa) via adsorption with an immobilization efficiency of approximately 100%. Through pre-treatment with ionic liquid, 1-ethyl-3methylimidazolium acetate ([Emim][OAc]) and ultrasound, the conversion rate of chitin achieved 100% in a biocatalytic membrane (loaded with 13.24 U/cm 2 SaChiA4) flow-through cycle operated at 40 °C, 200 rpm, and 2.5 bar for about 14 h. The SaChiA4 EMR maintained a high chitin conversion rate of 75.60% after five continuous reaction cycles at 40 °C. After storage at 4 °C for 30 days, the conversion rate remained 68.95% in the fourth reaction cycle. This biocatalytic UF membrane reactor could show potential in efficient and sustainable conversion of chitin.

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“…Invertase surface changes are a simple and adaptable way to increase the membrane's surface characteristics and thus its reusability. (J. Wang and J. Luo et al, 2020) [4] Raw honey contains invertase, which is utilised for heating and timing purposes. (Huseyin Sahin and Sevgi Kolayli et al, 2020) [5] Fructofurunoside is another name for invertase.…”

Section: Introductionmentioning

confidence: 99%

Invertase enzyme

Siddiqa¹,

Amin²

2022

Int. J. Adv. Biochem. Res.

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The enzyme known as invertase catalysis the conversion of sucrose into glucose and fructose (EC 3.2.1.26). The best source of invertase is yeast. Internal and exterior in vertases are the two varieties found in S. cerevisiae. Invertase catalyses the hydrolysis of sucrose into fructose and glucose. Pharmaceuticals, analytical measuring probes, and yeast species detection ELISA kits all include this invertase. Immobilization of the invertase naturally is what is meant by this. Different levels of glycoprotein polymerization, glycosylation, and phosphorylation make bacteria invertase unique. A range of gram-positive and gram-negative organisms, including Zymomonas mobilis, and Bacillus strains, produce invertase. Comparing fungal growth to the time course of invertase synthesis by fungi, which ranged from 24 to 192 hours, was analysed. Twenty-four-hour intervals were used to measure the invertase activity. The biological characteristics that were looked at in this study included the amount of invertase-producing bacteria and soil invertase activity. Invertase is used to replace traditional acid hydrolysis.

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From molasses to syrup: Engineering ultrafiltration membrane surface to improve invertase reusability

Cited by 12 publications

References 39 publications

Nanofiltration for Decolorization: Membrane Fabrication, Applications and Challenges

Nanofiltration for Decolorization: Membrane Fabrication, Applications and Challenges

Construction of an Immobilized Enzyme Membrane Reactor for Efficient and Sustainable Conversion of Ionic Liquid/Ultrasound-Pretreated Chitin

Invertase enzyme

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