1
|
Duan X, Luan S. Efficient secreted expression of natural intracellular β-galactosidase from Bacillus aryabhattai via non-classical protein secretion pathway in Bacillus subtilis. Int J Biol Macromol 2023; 248:125758. [PMID: 37453640 DOI: 10.1016/j.ijbiomac.2023.125758] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2023] [Revised: 06/20/2023] [Accepted: 07/07/2023] [Indexed: 07/18/2023]
Abstract
In this study, the natural intracellular β-galactosidase (lacZBa) from Bacillus aryabhattai was expressed extracellularly in Bacillus subtilis. Sec and Tat signal peptides from different secretion pathways were incorporated to facilitate extracellular secretion of lacZBa, resulting in a yield of only 0.54 U/mL. Interestingly, it was discovered that lacZBa could be efficiently expressed and secreted in B. subtilis via a non-classical secretory pathway without the need for a signal peptide. The extracellular activity and secretion ratio were 5.3 U/mL and 65 %, respectively. Compared to E. coli, the expression of lacZBa in B. subtilis resulted in increased acid resistance and higher pH stability and thermostability, with a 1.7-fold increase in half-life at 50 °C and pH 6.0. Additionally, we combined single-factor experiments and response surface methodology to enhance extracellular expression of β-galactosidase in shake-flasks. The resulting optimal medium contained 4.46 % glucose, 1.47 % corn steep liquor, 1.5 % beef extract, 0.82 % CaCl2, and 0.1 % MgSO4. Under optimal conditions, the yield of extracellularly secreted β-galactosidase at the shake flask level was 17.41 U/mL, representing a 32.2-fold increase in initial extracellular enzyme activity. This study represents the first successful report of natural intracellular β-galactosidase being expressed through the non-classical secretory pathway in B. subtilis.
Collapse
Affiliation(s)
- Xuguo Duan
- College of Light Industry and Food Engineering, Nanjing Forestry University, Nanjing, Jiangsu 210037, China.
| | - Shuyue Luan
- College of Light Industry and Food Engineering, Nanjing Forestry University, Nanjing, Jiangsu 210037, China
| |
Collapse
|
2
|
Experimental Study on the Efficiency Improvement of Flat Plate Solar Collectors Using Hybrid Nanofluids Graphene/Waste Cotton. ENERGIES 2022. [DOI: 10.3390/en15072309] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
Flat plate solar collectors can easily be termed as the most vastly studied alternative energy transforming and generating technology of the twenty-first century. As the world is racing towards the fourth industrial revolution (Industry 4.0), more and more energy is being consumed for mega projects to be materialized. Electronic devices are not only confined to conventional intermittent and costlier electric energy, but also fuel. Solar energy is now being shared to work smart devices, transform electric energy, and operate automobiles, aeronautics, water heating, and space heating. Traditional flat plate solar collectors can only occupy 50–60% of their thermal efficiency, resulting in less heat generation and a low thermal performance because of using a common absorber made of copper tubing compared to a high conductive metal sheet (copper or aluminum). To ameliorate the thermal efficiency of the solar collector, it is imperative to find a superior alternative heat exchanger that will result in improved thermal performance of the solar collector. In this study, light has been shed in terms of substituting conventional heat absorbers with crystal nano-cellulose (CNC) and a graphene hybrid. An empirical comparison has been drawn by comparing the familiar 0.3% base fluid, 0.5% graphene, and CNC separately, as well as 0.3%, 0.5% CNC, and graphene hybrids at different temperatures. Remarkably, this work has proven that a CNC and graphene hybrid fluid with a volumetric fraction of 0.5% concentration and at a high temperature of 80 °C, gave astounding results for improved thermal conductivity, viscosity, and other parameters. CNC and graphene hybrid nanofluid can be a superior substitute for a conventional base fluid, resulting in prolific thermal performance.
Collapse
|
3
|
Gao Y, Shah K, Kwok I, Wang M, Rome LH, Mahendra S. Immobilized fungal enzymes: Innovations and potential applications in biodegradation and biosynthesis. Biotechnol Adv 2022; 57:107936. [PMID: 35276253 DOI: 10.1016/j.biotechadv.2022.107936] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2021] [Revised: 02/28/2022] [Accepted: 03/03/2022] [Indexed: 01/10/2023]
Abstract
Microbial enzymes catalyze various reactions inside and outside living cells. Among the widely studied enzymes, fungal enzymes have been used for some of the most diverse purposes, especially in bioremediation, biosynthesis, and many nature-inspired commercial applications. To improve their stability and catalytic ability, fungal enzymes are often immobilized on assorted materials, conventional as well as nanoscale. Recent advances in fungal enzyme immobilization provide effective and sustainable approaches to achieve improved environmental and commercial outcomes. This review aims to provide a comprehensive overview of commonly studied fungal enzymes and immobilization technologies. It also summarizes recent advances involving immobilized fungal enzymes for the degradation or assembly of compounds used in the manufacture of products, such as detergents, food additives, and fossil fuel alternatives. Furthermore, challenges and future directions are highlighted to offer new perspectives on improving existing technologies and addressing unexplored fields of applications.
Collapse
Affiliation(s)
- Yifan Gao
- Department of Civil and Environmental Engineering, University of California, Los Angeles, CA 90095, United States
| | - Kshitjia Shah
- Department of Civil and Environmental Engineering, University of California, Los Angeles, CA 90095, United States
| | - Ivy Kwok
- Department of Civil and Environmental Engineering, University of California, Los Angeles, CA 90095, United States
| | - Meng Wang
- Department of Civil and Environmental Engineering, University of Pittsburgh, Pittsburgh, PA 15260, United States
| | - Leonard H Rome
- Department of Biological Chemistry, David Geffen School of Medicine, University of California, Los Angeles, CA 90095, United States; California NanoSystems Institute, University of California, Los Angeles, CA 90095, United States
| | - Shaily Mahendra
- Department of Civil and Environmental Engineering, University of California, Los Angeles, CA 90095, United States; California NanoSystems Institute, University of California, Los Angeles, CA 90095, United States.
| |
Collapse
|
4
|
Hackenhaar CR, Spolidoro LS, Flores EEE, Klein MP, Hertz PF. Batch synthesis of galactooligosaccharides from co-products of milk processing using immobilized β-galactosidase from Bacillus circulans. BIOCATALYSIS AND AGRICULTURAL BIOTECHNOLOGY 2021. [DOI: 10.1016/j.bcab.2021.102136] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
|
5
|
Damin BIS, Kovalski FC, Fischer J, Piccin JS, Dettmer A. Challenges and perspectives of the β-galactosidase enzyme. Appl Microbiol Biotechnol 2021; 105:5281-5298. [PMID: 34223948 DOI: 10.1007/s00253-021-11423-7] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2021] [Revised: 06/20/2021] [Accepted: 06/22/2021] [Indexed: 11/29/2022]
Abstract
The enzyme β-galactosidase has great potential for application in the food and pharmaceutical industries due to its ability to perform the hydrolysis of lactose, a disaccharide present in milk and in dairy by-products. It can be used in free form, in batch processes, or in immobilized form, which allows continuous operation and provides greater enzymatic stability. The choice of method and support for enzyme immobilization is essential, as the performance of the biocatalyst is strongly influenced by the properties of the material used and by the interaction mechanisms between support and enzyme. Therefore, this review showed the main enzyme immobilization techniques, and the most used supports for the constitution of biocatalysts. Also, materials with the potential for immobilization of β-galactosidases and the importance of their biotechnological application are presented. KEY POINTS: • The main methods of immobilization are physical adsorption, covalent bonding, and crosslinking. • The structural conditions of the supports are determining factors in the performance of the biocatalysts. • Enzymatic hydrolysis plays an important role in the biotechnology industry.
Collapse
Affiliation(s)
- B I S Damin
- Faculty of Agronomy and Veterinary Medicine (FAMV), Postgraduate Program in Food Science and Technology (PPGCTA), University of Passo Fundo (UPF), Passo Fundo, RS, Brazil
| | - F C Kovalski
- Faculty of Engineering and Architecture (FEAR), Chemical Engineering Course, University of Passo Fundo (UPF), Passo Fundo, RS, Brazil
| | - J Fischer
- Institute of Exact Sciences and Geosciences (ICEG), Chemical Course, University of Passo Fundo (UPF), Passo Fundo, RS, Brazil.
| | - J S Piccin
- Faculty of Agronomy and Veterinary Medicine (FAMV), Postgraduate Program in Food Science and Technology (PPGCTA), University of Passo Fundo (UPF), Passo Fundo, RS, Brazil
| | - A Dettmer
- Faculty of Agronomy and Veterinary Medicine (FAMV), Postgraduate Program in Food Science and Technology (PPGCTA), University of Passo Fundo (UPF), Passo Fundo, RS, Brazil
| |
Collapse
|
6
|
Erol K, Arslan Akveran G, Köse K, Ali Köse D. Reducing lactose content of milk from livestock and humans via lactose imprinted poly(2-hydroxyethyl methacrylate-N-methacryloyl-i-aspartic acid) cryogels. JOURNAL OF POLYMER ENGINEERING 2021. [DOI: 10.1515/polyeng-2020-0176] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
Abstract
Lactase, which can cause lactose intolerance in its deficiency, is a vital enzyme concerning digestion. To overcome lactose intolerance for patients with digestion problem depending of this kind of issue, lactose in food should be removed. In this study, lactose imprinted poly(2-hydroxyethyl methacrylate-N-methacryloyl-l-aspartic acid), poly(HEMA-MAsp), cryogels were synthesized to reduce the amount of lactose content of milk samples. Occurrence of desired bounds, structural integrity, and surface characteristics were analyzed via Fourier transform infrared spectroscopy (FT-IR), nuclear magnetic resonance (NMR), scanning electron microscope (SEM), micro computed tomography (CT), and confocal microscope methods. Water retention characteristic were tested in solution with different electrolytic nature. Adsorption parameters were optimized in an aqueous medium. The adsorption performance of imprinted cryogels was studied in milk samples obtained from cow, sheep, goat, buffalo, and from human volunteers at different intervals after birth. Amount of lactose adsorbed in aqueous media and milk sample from humans were 322 (56.7%) and 179.5 (5.94%) mg lactose/g polymer, respectively. Selectivity studies revealed an approximately 8-fold increase in adsorption rate of molecularly imprinted cryogels as compared to that of nonimprinted cryogels. In addition, competitive adsorption was conducted using lactose-imprinted cryogels in aqueous media containing lactose, glucose, and galactose molecules resulting in adsorption rates of 220.56, 57.87, and 61.65 mg biomolecule/g polymer, respectively.
Collapse
Affiliation(s)
- Kadir Erol
- Department of Property Protection and Safety , Osmancık Ö. D. Vocational School, Hitit University , Çorum , Turkey
| | - Gönül Arslan Akveran
- Department of Food Processing , Alaca Avni Çelik Vocational School, Hitit University , Çorum , Turkey
| | - Kazım Köse
- Department of Joint Courses , Hitit University , Çorum 19030 , Turkey
| | - Dursun Ali Köse
- Department of Chemistry , Faculty of Science and Arts, Hitit University , Çorum , Turkey
| |
Collapse
|
7
|
Li Y, Deng B, Chen H, Yang S, Sun B. A ratiometric fluorescent probe for the detection of β-galactosidase and its application. RSC Adv 2021; 11:13341-13347. [PMID: 35423855 PMCID: PMC8697631 DOI: 10.1039/d1ra00739d] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2021] [Accepted: 04/01/2021] [Indexed: 11/21/2022] Open
Abstract
Herein, a coumarin fluorescent probe (Probe 1) was developed for the ratiometric detection of β-galactosidase (β-gal) activity. The detection range was 0–0.1 U mL−1 and 0.2–0.8 U mL−1, and the limit of detection (LOD) was 0.0054 U mL−1. Moreover, the luminous intensity of Probe 1 increased gradually with increase in β-gal activity. It could be observed under 254 nm UV irradiation by the naked eye. Furthermore, this method only required a small amount of sample (20 μL) and a short analytical time (30 min) for the detection of β-gal activity with a low LOD. Probe 1 was successfully used to detect β-gal activity in real fruit samples, and can be applied to the quantitative and qualitative detection of β-gal activity. A ratiometric fluorescent probe was successfully used as a tool to determine β-galactosidase activity in fruits.![]()
Collapse
Affiliation(s)
- Yanan Li
- Beijing Key Laboratory of Flavor Chemistry
- Beijing Technology and Business University
- Beijing 100048
- China
| | - Bing Deng
- Beijing Key Laboratory of Flavor Chemistry
- Beijing Technology and Business University
- Beijing 100048
- China
| | - Haitao Chen
- Beijing Key Laboratory of Flavor Chemistry
- Beijing Technology and Business University
- Beijing 100048
- China
| | - Shaoxiang Yang
- Beijing Key Laboratory of Flavor Chemistry
- Beijing Technology and Business University
- Beijing 100048
- China
| | - Baoguo Sun
- Beijing Key Laboratory of Flavor Chemistry
- Beijing Technology and Business University
- Beijing 100048
- China
| |
Collapse
|
8
|
Rico-Rodríguez F, Villamiel M, Ruiz-Aceituno L, Serrato JC, Montilla A. Effect of the lactose source on the ultrasound-assisted enzymatic production of galactooligosaccharides and gluconic acid. ULTRASONICS SONOCHEMISTRY 2020; 67:104945. [PMID: 32278244 DOI: 10.1016/j.ultsonch.2019.104945] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/23/2019] [Revised: 12/17/2019] [Accepted: 12/21/2019] [Indexed: 06/11/2023]
Abstract
It is well known that one of the main problems in galactooligosaccharide production (GOS) via tranglycosylation of lactose is the presence of monosaccharides that contribute to increasing the glycaemic index, as is the case of glucose. In this work, as well as studying the effect of ultrasound (US) on glucose oxidase (Gox) activation during gluconic acid (GA) production, we have carried out an investigation into the selective oxidation of glucose to gluconic acid in multienzymatic reactions (β-galactosidase (β-gal) and Gox) assisted by power US using different sources of lactose as substrate (lactose solution, whey permeate, cheese whey). In terms of the influence of matrix on GOS and GA production, lactose solution gave the best results, followed by cheese whey and whey permeate, salt composition being the most influential factor. The highest yields of GOS production with the lowest glucose concentration and highest GA production were obtained with lactose solution in multienzymatic systems in the presence of ultrasound (30% amplitude) when Gox was added after 1 h of treatment with β-gal. This work demonstrates the ability of US to enhance efficiently the obtainment of prebiotic mixtures of low glycaemic index.
Collapse
Affiliation(s)
- Fabián Rico-Rodríguez
- Departamento de Ingeniería Química y Ambiental, Facultad de Ingeniería. Universidad Nacional de Colombia - Sede Bogotá, Carrera 30 N° 45-03 Bogotá, Colombia
| | - Mar Villamiel
- Instituto de Investigación en Ciencias de la Alimentación (CIAL) (CSIC-UAM) CEI (CSIC+UAM), Nicolás Cabrera, 9, Campus de la Universidad Autónoma de Madrid, 28049 Madrid, Spain.
| | - Laura Ruiz-Aceituno
- Instituto de Investigación en Ciencias de la Alimentación (CIAL) (CSIC-UAM) CEI (CSIC+UAM), Nicolás Cabrera, 9, Campus de la Universidad Autónoma de Madrid, 28049 Madrid, Spain
| | - Juan Carlos Serrato
- Departamento de Ingeniería Química y Ambiental, Facultad de Ingeniería. Universidad Nacional de Colombia - Sede Bogotá, Carrera 30 N° 45-03 Bogotá, Colombia
| | - Antonia Montilla
- Instituto de Investigación en Ciencias de la Alimentación (CIAL) (CSIC-UAM) CEI (CSIC+UAM), Nicolás Cabrera, 9, Campus de la Universidad Autónoma de Madrid, 28049 Madrid, Spain
| |
Collapse
|
9
|
Novel fluorescent probe for the ratiometric detection of β-galactosidase and its application in fruit. Food Chem 2020; 328:127112. [DOI: 10.1016/j.foodchem.2020.127112] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/12/2020] [Revised: 05/19/2020] [Accepted: 05/20/2020] [Indexed: 11/19/2022]
|
10
|
de Souza TC, de Sousa Fonseca T, de Sousa Silva J, Lima PJM, Neto CACG, Monteiro RRC, Rocha MVP, de Mattos MC, dos Santos JCS, Gonçalves LRB. Modulation of lipase B from Candida antarctica properties via covalent immobilization on eco-friendly support for enzymatic kinetic resolution of rac-indanyl acetate. Bioprocess Biosyst Eng 2020; 43:2253-2268. [DOI: 10.1007/s00449-020-02411-8] [Citation(s) in RCA: 25] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2020] [Accepted: 07/15/2020] [Indexed: 01/24/2023]
|
11
|
Taheri-Kafrani A, Kharazmi S, Nasrollahzadeh M, Soozanipour A, Ejeian F, Etedali P, Mansouri-Tehrani HA, Razmjou A, Yek SMG, Varma RS. Recent developments in enzyme immobilization technology for high-throughput processing in food industries. Crit Rev Food Sci Nutr 2020; 61:3160-3196. [PMID: 32715740 DOI: 10.1080/10408398.2020.1793726] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Abstract
The demand for food and beverage markets has increased as a result of population increase and in view of health awareness. The quality of products from food processing industry has to be improved economically by incorporating greener methodologies that enhances the safety and shelf life via the enzymes application while maintaining the essential nutritional qualities. The utilization of enzymes is rendered more favorable in industrial practices via the modification of their characteristics as attested by studies on enzyme immobilization pertaining to different stages of food and beverage processing; these studies have enhanced the catalytic activity, stability of enzymes and lowered the overall cost. However, the harsh conditions of industrial processes continue to increase the propensity of enzyme destabilization thus shortening their industrial lifespan namely enzyme leaching, recoverability, uncontrollable orientation and the lack of a general procedure. Innovative studies have strived to provide new tools and materials for the development of systems offering new possibilities for industrial applications of enzymes. Herein, an effort has been made to present up-to-date developments on enzyme immobilization and current challenges in the food and beverage industries in terms of enhancing the enzyme stability.
Collapse
Affiliation(s)
- Asghar Taheri-Kafrani
- Department of Biotechnology, Faculty of Biological Science and Technology, University of Isfahan, Isfahan, Iran
| | - Sara Kharazmi
- Department of Biotechnology, Faculty of Biological Science and Technology, University of Isfahan, Isfahan, Iran
| | | | - Asieh Soozanipour
- Department of Biotechnology, Faculty of Biological Science and Technology, University of Isfahan, Isfahan, Iran
| | - Fatemeh Ejeian
- Department of Biotechnology, Faculty of Biological Science and Technology, University of Isfahan, Isfahan, Iran
| | - Parisa Etedali
- Department of Biotechnology, Faculty of Biological Science and Technology, University of Isfahan, Isfahan, Iran
| | | | - Amir Razmjou
- Department of Biotechnology, Faculty of Biological Science and Technology, University of Isfahan, Isfahan, Iran
| | - Samaneh Mahmoudi-Gom Yek
- Department of Chemistry, Faculty of Science, University of Qom, Qom, Iran.,Department of Chemistry, Bu-Ali Sina University, Hamedan, Iran
| | - Rajender S Varma
- Regional Centre of Advanced Technologies and Materials, Palacky University, Olomouc, Czech Republic
| |
Collapse
|
12
|
Glyoxyl-Activated Agarose as Support for Covalently Link Novo-Pro D: Biocatalysts Performance in the Hydrolysis of Casein. Catalysts 2020. [DOI: 10.3390/catal10050466] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022] Open
Abstract
This study aimed to evaluate the performance of a commercial protease (Novo-Pro D (NPD)), both in soluble and immobilized forms, in the hydrolysis of proteins (using casein as model protein). Immobilization of the protease NPD on 6% agarose activated with glyoxyl groups for 24 h at 20 °C and pH 10.0 allowed preparing immobilized biocatalyst with around 90% immobilization yield, 92% recovered activity versus small substrate, and a thermal stability 5.3-fold higher than the dialyzed soluble enzyme at 50 °C and pH 8.0. Immobilization times longer than 24 h lead to a decrease in the recovered activity and did not improve the biocatalyst stability. At 50 °C and pH 6.5, the immobilized NPD was around 20-fold more stable than the dialyzed soluble protease. Versus casein, the immobilized NDP presented a 10% level of activity, but it allowed hydrolyzing casein (26 g/L) at 50 °C and pH 6.5 up to a 40% degree of hydrolysis (DH) after 2 h reaction, while under the same conditions, only a 34% DH was achieved with soluble NPD. In addition, the immobilized NPD showed good reusability, maintaining the DH of casein for at least ten 2h-reaction batches.
Collapse
|
13
|
|
14
|
Xavier JR, Ramana KV, Sharma RK. β-galactosidase: Biotechnological applications in food processing. J Food Biochem 2018. [DOI: 10.1111/jfbc.12564] [Citation(s) in RCA: 41] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Janifer Raj Xavier
- Food Biotechnology Division, Defence Food Research Laboratory; Defence Research and Development Organization; Mysore Karnataka India
| | - Karna Venkata Ramana
- Food Biotechnology Division, Defence Food Research Laboratory; Defence Research and Development Organization; Mysore Karnataka India
| | - Rakesh Kumar Sharma
- Defence Food Research Laboratory; Defence Research and Development Organization; Mysore Karnataka India
| |
Collapse
|
15
|
Azevedo RD, Amaral IP, Ferreira AC, Espósito TS, Bezerra RS. Use of fish trypsin immobilized onto magnetic-chitosan composite as a new tool to detect antinutrients in aquafeeds. Food Chem 2018; 257:302-309. [DOI: 10.1016/j.foodchem.2018.03.034] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2017] [Revised: 03/08/2018] [Accepted: 03/08/2018] [Indexed: 10/17/2022]
|
16
|
Maltose Production Using Starch from Cassava Bagasse Catalyzed by Cross-Linked β-Amylase Aggregates. Catalysts 2018. [DOI: 10.3390/catal8040170] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022] Open
|
17
|
Batista K, Silva C, Fernandes P, Campos I, Fernandes K. Development of a new bioaffinity stationary phase for lactose removal using a lactose-binding lectin immobilized onto polyaniline. Sep Purif Technol 2017. [DOI: 10.1016/j.seppur.2017.05.019] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
|
18
|
Mono- and heterofunctionalized silica magnetic microparticles (SMMPs) as new carriers for immobilization of lipases. ACTA ACUST UNITED AC 2016. [DOI: 10.1016/j.molcatb.2017.04.002] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
|
19
|
Sen P, Bhattacharjee C, Bhattacharya P. Experimental studies and two-dimensional modelling of a packed bed bioreactor used for production of galacto-oligosaccharides (GOS) from milk whey. Bioprocess Biosyst Eng 2016; 39:361-80. [DOI: 10.1007/s00449-015-1516-2] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2015] [Accepted: 11/24/2015] [Indexed: 11/29/2022]
|
20
|
Biró E, Budugan D, Todea A, Péter F, Klébert S, Feczkó T. Recyclable solid-phase biocatalyst with improved stability by sol–gel entrapment of β-d-galactosidase. ACTA ACUST UNITED AC 2016. [DOI: 10.1016/j.molcatb.2015.11.006] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
|
21
|
Sen P, Choudhury N, Dutta M, Bhattacharya R. Studies On hydrolysis of skimmed milk using immobilized β-galactosidase in a membrane reactor. ACTA ACUST UNITED AC 2016. [DOI: 10.1016/j.matpr.2016.10.021] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
|
22
|
Tan IS, Lee KT. Immobilization of β-glucosidase from Aspergillus niger on κ-carrageenan hybrid matrix and its application on the production of reducing sugar from macroalgae cellulosic residue. BIORESOURCE TECHNOLOGY 2015; 184:386-394. [PMID: 25465785 DOI: 10.1016/j.biortech.2014.10.146] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/29/2014] [Revised: 10/27/2014] [Accepted: 10/29/2014] [Indexed: 06/04/2023]
Abstract
A novel concept for the synthesis of a stable polymer hybrid matrix bead was developed in this study. The beads were further applied for enzyme immobilization to produce stable and active biocatalysts with low enzyme leakage, and high immobilization efficiency, enzyme activity, and recyclability. The immobilization conditions, including PEI concentration, activation time and pH of the PEI solution were investigated and optimized. All formulated beads were characterized for its functionalized groups, composition, surface morphology and thermal stability. Compared with the free β-glucosidase, the immobilized β-glucosidase on the hybrid matrix bead was able to tolerate broader range of pH values and higher reaction temperature up to 60 °C. The immobilized β-glucosidase was then used to hydrolyse pretreated macroalgae cellulosic residue (MCR) for the production of reducing sugar and a hydrolysis yield of 73.4% was obtained. After repeated twelve runs, immobilized β-glucosidase retained about 75% of its initial activity.
Collapse
Affiliation(s)
- Inn Shi Tan
- School of Chemical Engineering, Universiti Sains Malaysia, Engineering Campus, Seri Ampangan, 14300 Nibong Tebal, Pulau Pinang, Malaysia
| | - Keat Teong Lee
- School of Chemical Engineering, Universiti Sains Malaysia, Engineering Campus, Seri Ampangan, 14300 Nibong Tebal, Pulau Pinang, Malaysia.
| |
Collapse
|
23
|
Bezerra CS, de Farias Lemos CMG, de Sousa M, Gonçalves LRB. Enzyme immobilization onto renewable polymeric matrixes: Past, present, and future trends. J Appl Polym Sci 2015. [DOI: 10.1002/app.42125] [Citation(s) in RCA: 71] [Impact Index Per Article: 7.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Affiliation(s)
- Camilla Salviano Bezerra
- Departamento de Engenharia Química; Universidade Federal do Ceará; Campus do Pici, Bloco 709, Fortaleza Ceará 60440-554 Brazil
| | | | - Marylane de Sousa
- Departamento de Engenharia Química; Universidade Federal do Ceará; Campus do Pici, Bloco 709, Fortaleza Ceará 60440-554 Brazil
| | - Luciana Rocha Barros Gonçalves
- Departamento de Engenharia Química; Universidade Federal do Ceará; Campus do Pici, Bloco 709, Fortaleza Ceará 60440-554 Brazil
| |
Collapse
|
24
|
Palai T, Kumar A, Bhattacharya PK. Kinetic studies and model development for the formation of galacto-oligosaccharides from lactose using synthesized thermo-responsive bioconjugate. Enzyme Microb Technol 2015; 70:42-9. [DOI: 10.1016/j.enzmictec.2014.12.010] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/24/2014] [Revised: 12/04/2014] [Accepted: 12/20/2014] [Indexed: 01/13/2023]
|
25
|
Process engineering studies of free and micro-encapsulated β-galactosidase in batch and packed bed bioreactors for production of galactooligosaccharides. Biochem Eng J 2014. [DOI: 10.1016/j.bej.2014.05.006] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
|
26
|
Immobilized alcalase alkaline protease on the magnetic chitosan nanoparticles used for soy protein isolate hydrolysis. Eur Food Res Technol 2014. [DOI: 10.1007/s00217-014-2301-1] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
|