1
|
Salunkhe JD, Patil SV. Improved naringinase double screen plate assay: progress towards the perfect screening. Nat Prod Res 2023:1-4. [PMID: 37746709 DOI: 10.1080/14786419.2023.2260067] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2023] [Accepted: 09/09/2023] [Indexed: 09/26/2023]
Abstract
Naringinase is an important enzyme for commercial purposes due to its dual activity as both α-l-rhamnosidase and β-d-glucosidase. The traditional method for screening microbes that produce naringinase involves growing them on naringin agar, but this method has limitations and result in false positive results. This is because the growth on the naringin agar plate could be due to the presence of other organisms that produce rhamnosidase or other glucosidases, or those that use agar as a carbon source, rather than actual naringinase producers. To address these limitations, a double screen plate assay was developed using synthetic substrates, to separately test for β-d-glucosidase and α-l-rhamnosidase activity. The presence of a yellow zone of p-nitrophenol indicates the action of these enzymes, and the intensity of the yellow colour zone indicates the potential for naringinase production. This new screening method is a significant improvement in identifying real naringinase producers and represents progress towards a more reliable screening assay.
Collapse
Affiliation(s)
- Jitendra D Salunkhe
- School of Life Sciences, Kavayitri Bahinabai Chaudhari North Maharashtra University, Jalgaon, Maharashtra, India
| | - Satish V Patil
- School of Life Sciences, Kavayitri Bahinabai Chaudhari North Maharashtra University, Jalgaon, Maharashtra, India
| |
Collapse
|
2
|
Imam H, Hill K, Reid A, Mix S, Marr PC, Marr AC. Supramolecular Ionic Liquid Gels for Enzyme Entrapment. ACS SUSTAINABLE CHEMISTRY & ENGINEERING 2023; 11:6829-6837. [PMID: 37180026 PMCID: PMC10170508 DOI: 10.1021/acssuschemeng.3c00517] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 01/27/2023] [Revised: 04/21/2023] [Indexed: 05/15/2023]
Abstract
Reported herein is an entrapment method for enzyme immobilization that does not require the formation of new covalent bonds. Ionic liquid supramolecular gels are formed containing enzymes that can be shaped into gel beads and act as recyclable immobilized biocatalysts. The gel was formed from two components, a hydrophobic phosphonium ionic liquid and a low molecular weight gelator derived from the amino acid phenylalanine. Gel-entrapped lipase from Aneurinibacillus thermoaerophilus was recycled for 10 runs over 3 days without loss of activity and retained activity for at least 150 days. The procedure does not form covalent bonds upon gel formation, which is supramolecular, and no bonds are formed between the enzyme and the solid support.
Collapse
Affiliation(s)
- Hasan
T. Imam
- School
of Chemistry and Chemical Engineering, Queen’s
University Belfast, UK, David Keir Building, Stranmillis Road, Belfast, Northern Ireland, United Kingdom BT9 5AG
| | - Kyle Hill
- School
of Chemistry and Chemical Engineering, Queen’s
University Belfast, UK, David Keir Building, Stranmillis Road, Belfast, Northern Ireland, United Kingdom BT9 5AG
| | - Andrew Reid
- School
of Chemistry and Chemical Engineering, Queen’s
University Belfast, UK, David Keir Building, Stranmillis Road, Belfast, Northern Ireland, United Kingdom BT9 5AG
| | - Stefan Mix
- Department
of Biocatalysis, Almac Bioscience, Almac
Group, Almac House, 20 Seagoe Industrial Estate, Craigavon, Belfast, Northern Ireland, United Kingdom BT63 5QD
| | - Patricia C. Marr
- School
of Chemistry and Chemical Engineering, Queen’s
University Belfast, UK, David Keir Building, Stranmillis Road, Belfast, Northern Ireland, United Kingdom BT9 5AG
- E-mail:
| | - Andrew C. Marr
- School
of Chemistry and Chemical Engineering, Queen’s
University Belfast, UK, David Keir Building, Stranmillis Road, Belfast, Northern Ireland, United Kingdom BT9 5AG
- E-mail:
| |
Collapse
|
3
|
Gupta AK, Rather MA, Mishra P. Design and development of laboratory scale batch type device for debittering of bitter citrus juice. J FOOD PROCESS ENG 2023. [DOI: 10.1111/jfpe.14265] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Affiliation(s)
- Arun Kumar Gupta
- Department of Food Engineering and Technology Tezpur University Tezpur Assam India
- Department of Life Sciences (Food Technology) Graphic Era (Deemed to be) University Dehradun Uttarakhand India
| | - Muzamil Ahmad Rather
- Department of Molecular Biology and Biotechnology Tezpur University Tezpur Assam India
| | - Poonam Mishra
- Department of Food Engineering and Technology Tezpur University Tezpur Assam India
| |
Collapse
|
4
|
|
5
|
Kumar Gupta A, Pratim Sahu P, Mishra P. Ultrasound aided debittering of bitter variety of citrus fruit juice: Effect on chemical, volatile profile and antioxidative potential. ULTRASONICS SONOCHEMISTRY 2021; 81:105839. [PMID: 34871912 PMCID: PMC8649891 DOI: 10.1016/j.ultsonch.2021.105839] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/20/2021] [Revised: 11/15/2021] [Accepted: 11/17/2021] [Indexed: 05/26/2023]
Abstract
In the present study, sonication assisted debittering of pomelo fruit juice was carried out and the effect of sonication along with resin/enzyme on the chemical, phytochemical and volatile composition of juice was also investigated. The optimum conditions for sonication coupled debittering using resin were 50 kHz, 2 min, and 45 ℃ while 50 kHz, 60 min, and 60 ℃ were obtained for enzyme hydrolysis. Sonication treatment not only reduced the debittering time but also enhanced the adsorption and hydrolysis of naringin by 17% and 20% in resin and enzyme respectively. In addition, enzymatic activity was also improved and weakened C-O bonds in naringin. At the same time, sonication significantly affected the bioactive compounds of juice, chemical composition, and volatile compounds of juice. Flavor compounds including octanal, linalool, citral, and ethyl butyrate were enhanced by sonication-assisted enzymatic treated juice.
Collapse
Affiliation(s)
- Arun Kumar Gupta
- Department of Food Engineering and Technology, Tezpur University, Tezpur, Assam, India
| | - Partha Pratim Sahu
- Department of Electrical and Communication Engineering, Tezpur University, Assam, India
| | - Poonam Mishra
- Department of Food Engineering and Technology, Tezpur University, Tezpur, Assam, India.
| |
Collapse
|
6
|
Wang X, Enomoto R, Murakami Y. Ionic additive strategy to control nucleation and generate larger single crystals of 3D covalent organic frameworks. Chem Commun (Camb) 2021; 57:6656-6659. [PMID: 34128021 DOI: 10.1039/d1cc01857d] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
To generate large single crystals of 3D covalent organic frameworks, the active use of ionic additives, which can greatly impact crystal size, is proposed. The crystal size ranking was found to be in accordance with the Hofmeister series and Gutmann donor number, providing a useful strategy to enhance crystal size and, consequently, generate COF-300 single crystals of >200 μm in size.
Collapse
Affiliation(s)
- Xiaohan Wang
- School of Engineering, Tokyo Institute of Technology, 2-12-1 Ookayama, Meguro-ku, Tokyo 152-8552, Japan.
| | - Riku Enomoto
- School of Engineering, Tokyo Institute of Technology, 2-12-1 Ookayama, Meguro-ku, Tokyo 152-8552, Japan.
| | - Yoichi Murakami
- School of Engineering, Tokyo Institute of Technology, 2-12-1 Ookayama, Meguro-ku, Tokyo 152-8552, Japan. and PRESTO, JST, 4-1-8 Honcho, Kawaguchi, Saitama 332-0012, Japan
| |
Collapse
|
7
|
Gupta AK, Yumnam M, Medhi M, Koch P, Chakraborty S, Mishra P. Isolation and characterization of naringinase enzyme and its application in debittering of Pomelo juice (
Citrus grandis
): A comparative study with macroporous resin. J FOOD PROCESS PRES 2021. [DOI: 10.1111/jfpp.15380] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Affiliation(s)
- Arun Kumar Gupta
- Department of Food Engineering and Technology Tezpur University Tezpur India
| | - Monica Yumnam
- Department of Food Engineering and Technology Tezpur University Tezpur India
| | - Manisha Medhi
- Department of Food Engineering and Technology Tezpur University Tezpur India
| | - Parismita Koch
- Department of Food Engineering and Technology Tezpur University Tezpur India
| | - Sourav Chakraborty
- Department of Food Engineering and Technology Tezpur University Tezpur India
| | - Poonam Mishra
- Department of Food Engineering and Technology Tezpur University Tezpur India
| |
Collapse
|
8
|
Zhao H. What do we learn from enzyme behaviors in organic solvents? - Structural functionalization of ionic liquids for enzyme activation and stabilization. Biotechnol Adv 2020; 45:107638. [PMID: 33002582 DOI: 10.1016/j.biotechadv.2020.107638] [Citation(s) in RCA: 29] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2020] [Revised: 09/05/2020] [Accepted: 09/25/2020] [Indexed: 12/16/2022]
Abstract
Enzyme activity in nonaqueous media (e.g. conventional organic solvents) is typically lower than in water by several orders of magnitude. There is a rising interest of developing new nonaqueous solvent systems that are more "water-like" and more biocompatible. Therefore, we need to learn from the current state of nonaqueous biocatalysis to overcome its bottleneck and provide guidance for new solvent design. This review firstly focuses on the discussion of how organic solvent properties (such as polarity and hydrophobicity) influence the enzyme activity and stability, and how these properties impact the enzyme's conformation and dynamics. While hydrophobic organic solvents usually lead to the maintenance of enzyme activity, solvents carrying functional groups like hydroxys and ethers (including crown ethers and cyclodextrins) can lead to enzyme activation. Ionic liquids (ILs) are designable solvents that can conveniently incorporate these functional groups. Therefore, we systematically survey these ether- and/or hydroxy-functionalized ILs, and find most of them are highly compatible with enzymes leading to high activity and stability. In particular, ILs carrying both ether and tert-alcohol groups are among the most enzyme-activating solvents. Future direction is to learn from enzyme behaviors in both water and nonaqueous media to design biocompatible "water-like" solvents.
Collapse
Affiliation(s)
- Hua Zhao
- Department of Chemistry and Biochemistry, University of Northern Colorado, Greeley, CO 80639, United States.
| |
Collapse
|
9
|
Akintunde JK, Akintola TE, Adenuga GO, Odugbemi ZA, Adetoye RO, Akintunde OG. Naringin attenuates Bisphenol-A mediated neurotoxicity in hypertensive rats by abrogation of cerebral nucleotide depletion, oxidative damage and neuroinflammation. Neurotoxicology 2020; 81:18-33. [PMID: 32810514 DOI: 10.1016/j.neuro.2020.08.001] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2020] [Revised: 08/04/2020] [Accepted: 08/06/2020] [Indexed: 02/07/2023]
Abstract
We examined whether active fruit naringin can reduce the risk of BPA-mediated neurotoxicity in L-NAME induced hypertensive rats and whether the modulation could be linked to improvement of brain NO signaling. Male albino rats were randomly distributed into eight (n = 7) groups. Group I was control animals, Group II was orally-treated with L-NAME, Group III was orally treated with 100 mg/kg BPA, Group IV was orally-treated with L-NAME +100 mg/kg BPA. Group V was orally-administered with L-NAME +80 mg/kg NAR. Group VI was orally-administered with 100 mg/kg BPA +80 mg/kg NAR. Group VII was orally-administered with L-NAME+100 mg/kg BPA +80 mg/kg NAR. Lastly, group VIII was orally-treated with 80 mg/kg NAR. The treatment lasted for 14 days. Sub-acute exposure to L-NAME and BPA induced hypertension and mediated-neuroinflammation at CA-2 and CA-4 of hippocampus cells. It was evident by increase in PDE-51 and enzymes of ATP hydrolysis (ATPase, ADPase and AMPase) with corresponding upsurge in cholinergic (AChE and BuChE), dopaminergic (MAO-A) and adenosinergic (ADA) enzymes as well as movement disorder. The hypertensive-mediated neurotoxicity was related to alteration of NO signaling and higher release of pro-inflammatory cytokines (TNF-α and IL-1β), apoptotic proteins (P53 and caspace-9) and facilitated entry of T-lymphocytes (CD43+) into CNS through blood brain barrier potentiated by antigen presenting cells. Hence, these features of BPA-mediated neurotoxicity in L-NAME induced hypertensive rats were prohibited by co-administration of NAR through production of neuro-inflammatory mediators, stabilizing neurotransmitter enzymes, normalizing NO signaling and improving brain histology.
Collapse
Affiliation(s)
- J K Akintunde
- Applied Biochemistry and Molecular Toxicology Research Group, Department of Biochemistry, College of Biosciences, Federal University of Agriculture, Abeokuta, Nigeria.
| | - T E Akintola
- Applied Biochemistry and Molecular Toxicology Research Group, Department of Biochemistry, College of Biosciences, Federal University of Agriculture, Abeokuta, Nigeria
| | - G O Adenuga
- Applied Biochemistry and Molecular Toxicology Research Group, Department of Biochemistry, College of Biosciences, Federal University of Agriculture, Abeokuta, Nigeria
| | - Z A Odugbemi
- Applied Biochemistry and Molecular Toxicology Research Group, Department of Biochemistry, College of Biosciences, Federal University of Agriculture, Abeokuta, Nigeria; Department of Physiology and Biochemistry, College of Veterinary Medicine, Federal University of Agriculture, Abeokuta, Nigeria
| | - R O Adetoye
- Applied Biochemistry and Molecular Toxicology Research Group, Department of Biochemistry, College of Biosciences, Federal University of Agriculture, Abeokuta, Nigeria
| | - O G Akintunde
- Department of Physiology and Biochemistry, College of Veterinary Medicine, Federal University of Agriculture, Abeokuta, Nigeria
| |
Collapse
|
10
|
Bodakowska-Boczniewicz J, Garncarek Z. Immobilization of Naringinase from Aspergillus Niger on a Magnetic Polysaccharide Carrier. Molecules 2020; 25:E2731. [PMID: 32545562 PMCID: PMC7356055 DOI: 10.3390/molecules25122731] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2020] [Revised: 06/10/2020] [Accepted: 06/10/2020] [Indexed: 02/07/2023] Open
Abstract
Naringinase is an enzymatic complex used in the deglycosylation of compounds with a high application potential in the food and pharmaceutical industries. The aim of the study was to immobilize naringinase from Aspergillus niger KMS on a magnetic carrier obtained on the basis of carob gum activated by polyethyleneimine. Response surface methodology was used to optimize naringinase immobilization taking into account the following factors: pH, immobilization time, initial concentration of naringinase and immobilization temperature. The adsorption of the enzyme on a magnetic carrier was a reversible process. The binding force of naringinase was increased by crosslinking the enzyme with the carrier using dextran aldehyde. The crosslinked enzyme had better stability in an acidic environment and at a higher temperature compared to the free form. The immobilization and stabilization of naringinase by dextran aldehyde on the magnetic polysaccharide carrier lowered the activation energy, thus increasing the catalytic capacity of the investigated enzyme and increasing the activation energy of the thermal deactivation process, which confirms higher stability of the immobilized enzyme in comparison with free naringinase. The preparation of crosslinked naringinase retained over 80% of its initial activity after 10 runs of naringin hydrolysis from fresh and model grapefruit juice.
Collapse
Affiliation(s)
| | - Zbigniew Garncarek
- Department of Biotechnology and Food Analysis, Wroclaw University of Economics and Business, 53–345 Wroclaw, Poland;
| |
Collapse
|
11
|
Akintunde JK, Akintola TE, Hammed MO, Amoo CO, Adegoke AM, Ajisafe LO. Naringin protects against Bisphenol-A induced oculopathy as implication of cataract in hypertensive rat model. Biomed Pharmacother 2020; 126:110043. [PMID: 32172062 DOI: 10.1016/j.biopha.2020.110043] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2020] [Revised: 02/14/2020] [Accepted: 02/23/2020] [Indexed: 12/12/2022] Open
Abstract
People who have experienced high blood pressure are at greater risk of susceptibility to other health problems including oculopathy. The patients with these experiences do not have adequate treatment and those who do; spend much funds on the drug purchase. The study examines the protective effect of naringin (NRG) against ocular impairment in L-NAME induced hypertensive rat on exposure to a cellular disruptor. Fifty-six adult male albino rats were randomly distributed into eight (n = 7) groups. Group I: control animals, Group II was treated with Nω-nitro-L-arginine methyl ester hydrochloride (L-NAME), Group III was treated with 50 mg/kg Bisphenol-A, Group IV was treated with L-NAME +50 mg/kg Bisphenol-A. Group V was administered with L-NAME +80 mg/kg NRG. Group VI was administered with 50 Mg/kg BPA + 80 mg/kg NRG. Group VII was administered with L-NAME+50 mg/kg Bisphenol-A +80 mg/kg NRG. Lastly, group VIII was treated with 80 mg/kg NRG alone for 14 days. Naringin prevented hypertension and ocular dysfunction by depleting the activities of angiotensin-converting enzymes, arginase, aldose-reductase and phosphodiesterase-51 (PDE-51) with corresponding down-regulation of inflammatory markers including TNF-α and IL-B. Moreover, ocular impairment was remarkably reduced by NRG as manifested by the decreased activities of AChE, BuChE, MAO-A and enzymes of ATP hydrolysis (ATPase, ADPase, AMPase) and adenosine deaminase with resultant increased NO level. Also, ocular expression of CD43 transcript, caspaace-9 and tumor suppressor P53 proteins were suppressed on treatment with NRG. This study corroborates the view that NRG may be a useful therapy in alleviating inflammatory markers, apoptosis and metabolic nucleotides disorders via the NOS/cGMP/PKG signaling pathways in hypertensive rat model on exposure to a cellular disruptor.
Collapse
Affiliation(s)
- J K Akintunde
- Applied Biochemistry and Molecular Toxicology Research Group, Department of Biochemistry, College of Biosciences, Federal University of Agriculture, Abeokuta, Nigeria.
| | - T E Akintola
- Applied Biochemistry and Molecular Toxicology Research Group, Department of Biochemistry, College of Biosciences, Federal University of Agriculture, Abeokuta, Nigeria
| | - M O Hammed
- Applied Biochemistry and Molecular Toxicology Research Group, Department of Biochemistry, College of Biosciences, Federal University of Agriculture, Abeokuta, Nigeria
| | - C O Amoo
- Applied Biochemistry and Molecular Toxicology Research Group, Department of Biochemistry, College of Biosciences, Federal University of Agriculture, Abeokuta, Nigeria
| | - A M Adegoke
- Cancer Research and Molecular Biology Laboratories, Department of Biochemistry, Faculty of Basic Medical Sciences, College of Medicine, University of Ibadan, Nigeria
| | - L O Ajisafe
- Cancer Research and Molecular Biology Laboratories, Department of Biochemistry, Faculty of Basic Medical Sciences, College of Medicine, University of Ibadan, Nigeria
| |
Collapse
|
12
|
Li WN, Fan DD. Biocatalytic strategies for the production of ginsenosides using glycosidase: current state and perspectives. Appl Microbiol Biotechnol 2020; 104:3807-3823. [DOI: 10.1007/s00253-020-10455-9] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2020] [Revised: 01/31/2020] [Accepted: 02/07/2020] [Indexed: 12/22/2022]
|
13
|
Ottone C, Romero O, Aburto C, Illanes A, Wilson L. Biocatalysis in the winemaking industry: Challenges and opportunities for immobilized enzymes. Compr Rev Food Sci Food Saf 2020; 19:595-621. [PMID: 33325181 DOI: 10.1111/1541-4337.12538] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2019] [Revised: 12/02/2019] [Accepted: 12/17/2019] [Indexed: 12/18/2022]
Abstract
Enzymes are powerful catalysts already being used in a large number of industrial processes. Impressive advantages in enzyme catalysts improvement have occurred in recent years aiming to improve their performance under harsh operation conditions far away from those of their cellular habitat. Production levels of the winemaking industry have experienced a remarkable increase, and technological innovations have been introduced for increasing the efficiency at different process steps or for improving wine quality, which is a key issue in this industry. Enzymes, such as pectinases and proteases, have been traditionally used, and others, such as glycosidases, have been more recently introduced in the modern wine industry, and many dedicated studies refer to the improvement of enzyme performance under winemaking conditions. Within this framework, a thorough review on the role of enzymes in winemaking is presented, with special emphasis on the use of immobilized enzymes as a significant strategy for catalyst improvement within an industry in which enzymes play important roles that are to be reinforced paralleling innovation.
Collapse
Affiliation(s)
- Carminna Ottone
- Escuela de Ingeniería Bioquímica, Pontificia Universidad Católica de Valparaíso, Valparaíso, Chile
| | - Oscar Romero
- Escuela de Ingeniería Bioquímica, Pontificia Universidad Católica de Valparaíso, Valparaíso, Chile
| | - Carla Aburto
- Escuela de Ingeniería Bioquímica, Pontificia Universidad Católica de Valparaíso, Valparaíso, Chile
| | - Andrés Illanes
- Escuela de Ingeniería Bioquímica, Pontificia Universidad Católica de Valparaíso, Valparaíso, Chile
| | - Lorena Wilson
- Escuela de Ingeniería Bioquímica, Pontificia Universidad Católica de Valparaíso, Valparaíso, Chile
| |
Collapse
|
14
|
Elgharbawy AA, Moniruzzaman M, Goto M. Recent advances of enzymatic reactions in ionic liquids: Part II. Biochem Eng J 2020. [DOI: 10.1016/j.bej.2019.107426] [Citation(s) in RCA: 37] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
|
15
|
Xu WJ, Huang YK, Li F, Wang DD, Yin MN, Wang M, Xia ZN. Improving β-glucosidase biocatalysis with deep eutectic solvents based on choline chloride. Biochem Eng J 2018. [DOI: 10.1016/j.bej.2018.07.002] [Citation(s) in RCA: 34] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
|
16
|
Martins SL, Albuquerque BF, Nunes MAP, Ribeiro MHL. Exploring magnetic and imprinted cross-linked enzyme aggregates of rhamnopyranosidase in microbioreactors. BIORESOURCE TECHNOLOGY 2018; 249:704-712. [PMID: 29091856 DOI: 10.1016/j.biortech.2017.10.078] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/31/2017] [Revised: 10/15/2017] [Accepted: 10/19/2017] [Indexed: 06/07/2023]
Abstract
The goal of this work was the development of magnetic cross link enzyme aggregates (mCLEAs) of rhamnopyranosidase (Rhmnase), prepared by chemical cross-linking with functionalized magnetite nanoparticles for glycompounds biosynthesis in microbioreactors (specially design 24-well microplate and mini-packed bed). Rhamnopyranosidase (EC number 3.2.1.40) present high potential in glycocompounds production, with applications in food and pharmaceutical industries. The influence of precipitants, cross-linkers, temperature and time on (m)CLEAs@Rhmnase development were optimized. Biocatalyst activity was accessed in the hydrolysis of 4',5,7-trihydroxyflavanone-7-rhamnoglucoside and kinetic constants in the deglycosylation reaction were evaluated. Rhmnase operational stability was enhanced in mCLEAs, retaining almost 90% initial activity after 7 cycles of 24 h each. In a mini-packed bed bioreactor a maximum volumetric productivity of 140 μmol/L.h was attained. In this bioreactor the operational stability of mCLEAs@Rhmnase were evaluated at a flow rate of 5 mL/h during 5 days and a residual activity of 95% was observed.
Collapse
Affiliation(s)
- Samuel L Martins
- Faculdade Farmácia, Universidade Lisboa, Av. Prof. Gama Pinto, 1649-003 Lisboa, Portugal; CIPAN - Companhia Industrial Produtora de Antibióticos, SA, Portugal
| | - Barbara F Albuquerque
- Faculdade Farmácia, Universidade Lisboa, Av. Prof. Gama Pinto, 1649-003 Lisboa, Portugal; Escola Superior de Tecnologia do Barreiro, Instituto Politécnico Setúbal, Portugal
| | - Mário A P Nunes
- Faculdade Farmácia, Universidade Lisboa, Av. Prof. Gama Pinto, 1649-003 Lisboa, Portugal
| | - Maria H L Ribeiro
- Faculdade Farmácia, Universidade Lisboa, Av. Prof. Gama Pinto, 1649-003 Lisboa, Portugal; Research Institute for Medicines (iMed.ULisboa), Faculdade Farmácia, Universidadede Lisboa, Av. Prof. Gama Pinto, 1649-003 Lisboa, Portugal.
| |
Collapse
|
17
|
Immobilization of purified β-glucuronidase on ZnO nanoparticles for efficient biotransformation of glycyrrhizin in ionic liquid/buffer biphasic system. Chem Eng Sci 2017. [DOI: 10.1016/j.ces.2016.12.074] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
|
18
|
Immobilization of Glycoside Hydrolase Families GH1, GH13, and GH70: State of the Art and Perspectives. Molecules 2016; 21:molecules21081074. [PMID: 27548117 PMCID: PMC6274110 DOI: 10.3390/molecules21081074] [Citation(s) in RCA: 39] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2016] [Revised: 08/11/2016] [Accepted: 08/12/2016] [Indexed: 12/20/2022] Open
Abstract
Glycoside hydrolases (GH) are enzymes capable to hydrolyze the glycosidic bond between two carbohydrates or even between a carbohydrate and a non-carbohydrate moiety. Because of the increasing interest for industrial applications of these enzymes, the immobilization of GH has become an important development in order to improve its activity, stability, as well as the possibility of its reuse in batch reactions and in continuous processes. In this review, we focus on the broad aspects of immobilization of enzymes from the specific GH families. A brief introduction on methods of enzyme immobilization is presented, discussing some advantages and drawbacks of this technology. We then review the state of the art of enzyme immobilization of families GH1, GH13, and GH70, with special attention on the enzymes β-glucosidase, α-amylase, cyclodextrin glycosyltransferase, and dextransucrase. In each case, the immobilization protocols are evaluated considering their positive and negative aspects. Finally, the perspectives on new immobilization methods are briefly presented.
Collapse
|
19
|
Cui P, Dou TY, Li SY, Lu JX, Zou LW, Wang P, Sun YP, Hao DC, Ge GB. Highly selective and efficient biotransformation of linarin to produce tilianin by naringinase. Biotechnol Lett 2016; 38:1367-73. [PMID: 27146204 DOI: 10.1007/s10529-016-2116-1] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2016] [Accepted: 04/27/2016] [Indexed: 01/14/2023]
Abstract
OBJECTIVES To develop a practical method to prepare tilianin by highly selective and efficient hydrolysis of the C-7 rhamnosyl group from linarin. RESULTS Naringinase was utilized to selectively catalyze the formation of tilianin using linarin as the starting material. The reaction conditions, including temperature, pH, metal ions, substrate concentration and enzyme concentration, were optimized. At 60 °C, naringinase showed enhanced α-L-rhamnosidase activity while the β-D-glucosidase activity was abrogated. The addition of Mg(2+), Fe(2+) and Co(2+) was also beneficial for selective biotransformation of linarin to tilianin. Under the optimized conditions (pH 7.0 at 60 °C), linarin could be nearly completely transformed to tilianin with excellent selectivity (>98.9 %), while that of the by-product acacetin was less than 1.1 %. In addition, the structure of target product tilianin was fully characterized by HR-MS and (1)H-NMR. CONCLUSION A highly selective and efficient biotransformation of linarin to tilianin was developed by the proper control of incubation temperature, which enhanced the α-L-rhamnosidase activity of naringinase and blocked its β-D-glucosidase activity.
Collapse
Affiliation(s)
- Pan Cui
- Laboratory of Pharmaceutical Resource Discovery, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian, 116023, China.,University of Chinese Academy of Sciences, Beijing, 100043, China
| | - Tong-Yi Dou
- Laboratory of Pharmaceutical Resource Discovery, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian, 116023, China.,University of Chinese Academy of Sciences, Beijing, 100043, China
| | - Shi-Yang Li
- Laboratory of Pharmaceutical Resource Discovery, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian, 116023, China
| | - Jun-Xia Lu
- Laboratory of Pharmaceutical Resource Discovery, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian, 116023, China
| | - Li-Wei Zou
- Laboratory of Pharmaceutical Resource Discovery, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian, 116023, China
| | - Ping Wang
- Laboratory of Pharmaceutical Resource Discovery, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian, 116023, China
| | - Yan-Ping Sun
- Laboratory of Pharmaceutical Resource Discovery, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian, 116023, China
| | - Da-Cheng Hao
- School of Environment and Chemical Engineering, Dalian Jiaotong University, Dalian, 116028, China
| | - Guang-Bo Ge
- Laboratory of Pharmaceutical Resource Discovery, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian, 116023, China.
| |
Collapse
|
20
|
The Protective Effect of Naringin against Bleomycin-Induced Pulmonary Fibrosis in Wistar Rats. Pulm Med 2016; 2016:7601393. [PMID: 26977316 PMCID: PMC4764747 DOI: 10.1155/2016/7601393] [Citation(s) in RCA: 40] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2015] [Revised: 12/23/2015] [Accepted: 01/14/2016] [Indexed: 12/22/2022] Open
Abstract
The aim of the current study was to investigate the protective effect of naringin on bleomycin-induced pulmonary fibrosis in rats. Twenty-four Wistar rats randomly divided into four groups (control, bleomycin alone, bleomycin + naringin 40, and bleomycin + naringin 80) were used. Rats were administered a single dose of bleomycin (5 mg/kg; via the tracheal cannula) alone or followed by either naringin 40 mg/kg (orally) or naringin 80 mg/kg (orally) or water (1 mL, orally) for 14 days. Rats and lung tissue were weighed to determine the lung index. TNF-α and IL-1β levels, hydroxyproline content, and malondialdehyde (MDA) levels were assayed. Glutathione peroxidase (GSH-Px) and superoxide dismutase (SOD) activities were determined. Tissue sections were stained with hematoxylin-eosin, Masson's trichrome, and 0.1% toluidine blue. TNF-α, IL-1β, and MDA levels and hydroxyproline content significantly increased (p < 0.01) and GPx and SOD activities significantly decreased in bleomycin group (p < 0.01). Naringin at a dose of 80 mg/kg body weight significantly decreased TNF-α and IL-1β activity, hydroxyproline content, and MDA level (p < 0.01) and increased GPx and SOD activities (p < 0.05). Histological evidence supported the results. These results show that naringin has the potential of reducing the toxic effects of bleomycin and may provide supportive therapy for conventional treatment methods for idiopathic pulmonary fibrosis.
Collapse
|
21
|
Zhao H. Protein Stabilization and Enzyme Activation in Ionic Liquids: Specific Ion Effects. JOURNAL OF CHEMICAL TECHNOLOGY AND BIOTECHNOLOGY (OXFORD, OXFORDSHIRE : 1986) 2016; 91:25-50. [PMID: 26949281 PMCID: PMC4777319 DOI: 10.1002/jctb.4837] [Citation(s) in RCA: 186] [Impact Index Per Article: 23.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/31/2015] [Accepted: 10/12/2015] [Indexed: 05/08/2023]
Abstract
There are still debates on whether the hydration of ions perturbs the water structure, and what is the degree of such disturbance; therefore, the origin of Hofmeister effect on protein stabilization continues being questioned. For this reason, it is suggested to use the 'specific ion effect' instead of other misleading terms such as Hofmeister effect, Hofmeister series, lyotropic effect, and lyotropic series. In this review, we firstly discuss the controversial aspect of inorganic ion effects on water structures, and several possible contributors to the specific ion effect of protein stability. Due to recent overwhelming attraction of ionic liquids (ILs) as benign solvents in many enzymatic reactions, we further evaluate the structural properties and molecular-level interactions in neat ILs and their aqueous solutions. Next, we systematically compare the specific ion effects of ILs on enzyme stability and activity, and conclude that (a) the specificity of many enzymatic systems in diluted aqueous IL solutions is roughly in line with the traditional Hofmeister series albeit some exceptions; (b) however, the specificity follows a different track in concentrated or neat ILs because other factors (such as hydrogen-bond basicity, nucelophilicity, and hydrophobicity, etc) are playing leading roles. In addition, we demonstrate some examples of biocatalytic reactions in IL systems that are guided by the empirical specificity rule.
Collapse
Affiliation(s)
- Hua Zhao
- Department of Chemistry and Forensic Science, Savannah State University, Savannah, GA 31404, USA
| |
Collapse
|
22
|
Immobilization of Candida rugosa lipase onto an eco-friendly support in the presence of ionic liquid. Bioprocess Biosyst Eng 2014; 38:805-14. [DOI: 10.1007/s00449-014-1322-2] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/09/2014] [Accepted: 11/03/2014] [Indexed: 11/27/2022]
|
23
|
Zhang J, Wang D, Pan J, Wang J, Zhao H, Li Q, Zhou X. Efficient resveratrol production by immobilized β-glucosidase on cross-linked chitosan microsphere modified by l-lysine. ACTA ACUST UNITED AC 2014. [DOI: 10.1016/j.molcatb.2014.03.003] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
|
24
|
DiCosimo R, McAuliffe J, Poulose AJ, Bohlmann G. Industrial use of immobilized enzymes. Chem Soc Rev 2013; 42:6437-74. [DOI: 10.1039/c3cs35506c] [Citation(s) in RCA: 897] [Impact Index Per Article: 81.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
|
25
|
de Souza RL, de Faria ELP, Figueiredo RT, Freitas LDS, Iglesias M, Mattedi S, Zanin GM, dos Santos OAA, Coutinho JAP, Lima ÁS, Soares CMF. Protic ionic liquid as additive on lipase immobilization using silica sol-gel. Enzyme Microb Technol 2012; 52:141-50. [PMID: 23410924 DOI: 10.1016/j.enzmictec.2012.12.007] [Citation(s) in RCA: 33] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2012] [Revised: 12/16/2012] [Accepted: 12/17/2012] [Indexed: 01/09/2023]
Abstract
Ionic liquids (ILs) have evolved as a new type of non-aqueous solvents for biocatalysis, mainly due to their unique and tunable physical properties. A number of recent review papers have described a variety of enzymatic reactions conducted in IL solutions, on the other hand, to improve the enzyme's activity and stability in ILs; major methods being explored include the enzyme immobilization (on solid support, sol-gel, etc.), protic ionic liquids used as an additive process. The immobilization of the lipase from Burkholderia cepacia by the sol-gel technique using protic ionic liquids (PIL) as additives to protect against inactivation of the lipase due to release of alcohol and shrinkage of the gel during the sol-gel process was investigated in this study. The influence of various factors such as the length of the alkyl chain of protic ionic liquids (monoethanolamine-based) and a concentration range between 0.5 and 3.0% (w/v) were evaluated. The resulting hydrophobic matrices and immobilized lipases were characterised with regard to specific surface area, adsorption-desorption isotherms, pore volume (V(p)) and size (d(p)) according to nitrogen adsorption and scanning electron microscopy (SEM), physico-chemical properties (thermogravimetric - TG, differential scanning calorimetry - DSC and Fourier transform infrared spectroscopy - FTIR) and the potential for ethyl ester and emulsifier production. The total activity yields (Y(a)) for matrices of immobilized lipase employing protic ionic liquids as additives always resulted in higher values compared with the sample absent the protic ionic liquids, which represents 35-fold increase in recovery of enzymatic activity using the more hydrophobic protic ionic liquids. Compared with arrays of the immobilized biocatalyst without additive, in general, the immobilized biocatalyst in the presence of protic ionic liquids showed increased values of surface area (143-245 m(2) g(-1)) and pore size (19-38 Å). Immobilization with protic ionic liquids also favoured reduced mass loss according to TG curves (always less than 42.9%) when compared to the immobilized matrix without protic ionic liquids (45.1%), except for the sample containing 3.0% protic ionic liquids (46.5%), verified by thermogravimetric analysis. Ionic liquids containing a more hydrophobic alkyl group in the cationic moiety were beneficial for recovery of the activity of the immobilized lipase. The physico-chemical characterization confirmed the presence of the enzyme and its immobilized derivatives obtained in this study by identifying the presence of amino groups, and profiling enthalpy changes of mass loss.
Collapse
Affiliation(s)
- Ranyere Lucena de Souza
- UNIT, Universidade Tiradentes, Instituto de Tecnologia e Pesquisa-ITP, Av. Murilo Dantas, 300, Prédio do ITP, Farolândia, Aracaju, SE, Brazil
| | | | | | | | | | | | | | | | | | | | | |
Collapse
|
26
|
Souza RL, Resende WC, Barão CE, Zanin GM, de Castro HF, Santos OA, Fricks AT, Figueiredo RT, Lima ÁS, Soares CM. Influence of the use of Aliquat 336 in the immobilization procedure in sol–gel of lipase from Bacillus sp. ITP-001. ACTA ACUST UNITED AC 2012. [DOI: 10.1016/j.molcatb.2012.05.013] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
|
27
|
Ursoiu A, Paul C, Kurtán T, Péter F. Sol-gel entrapped Candida antarctica lipase B--a biocatalyst with excellent stability for kinetic resolution of secondary alcohols. Molecules 2012; 17:13045-61. [PMID: 23124473 PMCID: PMC6268352 DOI: 10.3390/molecules171113045] [Citation(s) in RCA: 38] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2012] [Revised: 10/15/2012] [Accepted: 10/30/2012] [Indexed: 11/19/2022] Open
Abstract
Sol-gel entrapment is an efficient immobilization technique that allows preparation of robust and highly stable biocatalysts. Lipase from Candida antarctica B was immobilized by sol-gel entrapment and by sol-gel entrapment combined with adsorption on Celite 545, using a ternary silane precursor system. After optimization of the immobilization protocol, the best enzyme loading was 17.4 mg/g support for sol-gel entrapped lipase and 10.7 mg/g support for samples obtained by entrapment and adsorption. Sol-gel immobilized enzymes showed excellent values of enantiomeric ratio E and activity when ionic liquid 1-octyl-3-methyl-imidazolium tetrafluoroborate was used as additive. Immobilization increased the stability of the obtained biocatalysts in several organic solvents. Excellent operational stability was obtained for the immobilized lipase, maintaining unaltered catalytic activity and enantioselectivity during 15 reuse cycles. The biocatalysts were characterized using scanning electron microscopy (SEM) and fluorescence microscopy. The improved catalytic efficiency of entrapped lipases recommends their application for large-scale kinetic resolution of optically active secondary alcohols.
Collapse
Affiliation(s)
- Anca Ursoiu
- Faculty of Industrial Chemistry and Environmental, University “Politehnica” of Timisoara, C. Telbisz 6, 300001 Timisoara, Romania; (A.U.); (C.P.)
| | - Cristina Paul
- Faculty of Industrial Chemistry and Environmental, University “Politehnica” of Timisoara, C. Telbisz 6, 300001 Timisoara, Romania; (A.U.); (C.P.)
| | - Tibor Kurtán
- Department of Organic Chemistry, University of Debrecen, Debrecen 4032, Egyetem tér 1, Hungary;
| | - Francisc Péter
- Faculty of Industrial Chemistry and Environmental, University “Politehnica” of Timisoara, C. Telbisz 6, 300001 Timisoara, Romania; (A.U.); (C.P.)
- Author to whom correspondence should be addressed; ; Tel.: +40-256-404-216; Fax: +40-256-403-060
| |
Collapse
|
28
|
Zhou H, Yang L, Li W, Wang F, Li W, Zhao J, Liang X, Liu H. Immobilizing Penicillin G Acylase Using Silica-Supported Ionic Liquids: The Effects of Ionic Liquid Loadings. Ind Eng Chem Res 2012. [DOI: 10.1021/ie301843v] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Huacong Zhou
- State Key
Laboratory of Biochemical Engineering, Key Laboratory of Green Process
and Engineering, Institute of Process Engineering, Chinese Academy of Sciences, Beijing 100190, China
- Graduate School of Chinese Academy of Sciences, Beijing, 100039, China
| | - Liangrong Yang
- State Key
Laboratory of Biochemical Engineering, Key Laboratory of Green Process
and Engineering, Institute of Process Engineering, Chinese Academy of Sciences, Beijing 100190, China
| | - Wei Li
- Department of Chemistry, Capital Normal University, Beijing, 100048, China
| | - Fuchun Wang
- State Key
Laboratory of Biochemical Engineering, Key Laboratory of Green Process
and Engineering, Institute of Process Engineering, Chinese Academy of Sciences, Beijing 100190, China
- Graduate School of Chinese Academy of Sciences, Beijing, 100039, China
| | - Wensong Li
- State Key
Laboratory of Biochemical Engineering, Key Laboratory of Green Process
and Engineering, Institute of Process Engineering, Chinese Academy of Sciences, Beijing 100190, China
- Graduate School of Chinese Academy of Sciences, Beijing, 100039, China
| | - Junmei Zhao
- State Key
Laboratory of Biochemical Engineering, Key Laboratory of Green Process
and Engineering, Institute of Process Engineering, Chinese Academy of Sciences, Beijing 100190, China
| | - Xiangfeng Liang
- State Key
Laboratory of Biochemical Engineering, Key Laboratory of Green Process
and Engineering, Institute of Process Engineering, Chinese Academy of Sciences, Beijing 100190, China
| | - Huizhou Liu
- State Key
Laboratory of Biochemical Engineering, Key Laboratory of Green Process
and Engineering, Institute of Process Engineering, Chinese Academy of Sciences, Beijing 100190, China
| |
Collapse
|
29
|
Tang S, Baker GA, Zhao H. Ether- and alcohol-functionalized task-specific ionic liquids: attractive properties and applications. Chem Soc Rev 2012; 41:4030-66. [PMID: 22456483 PMCID: PMC3341508 DOI: 10.1039/c2cs15362a] [Citation(s) in RCA: 348] [Impact Index Per Article: 29.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
In recent years, the designer nature of ionic liquids (ILs) has driven their exploration and exploitation in countless fields among the physical and chemical sciences. A fair measure of the tremendous attention placed on these fluids has been attributed to their inherent designer nature. And yet, there are relatively few examples of reviews that emphasize this vital aspect in an exhaustive or meaningful way. In this critical review, we systematically survey the physicochemical properties of the collective library of ether- and alcohol-functionalized ILs, highlighting the impact of ionic structure on features such as viscosity, phase behavior/transitions, density, thermostability, electrochemical properties, and polarity (e.g. hydrophilicity, hydrogen bonding capability). In the latter portions of this review, we emphasize the attractive applications of these functionalized ILs across a range of disciplines, including their use as electrolytes or functional fluids for electrochemistry, extractions, biphasic systems, gas separations, carbon capture, carbohydrate dissolution (particularly, the (ligno)celluloses), polymer chemistry, antimicrobial and antielectrostatic agents, organic synthesis, biomolecular stabilization and activation, and nanoscience. Finally, this review discusses anion-functionalized ILs, including sulfur- and oxygen-functionalized analogs, as well as choline-based deep eutectic solvents (DESs), an emerging class of fluids which can be sensibly categorized as semi-molecular cousins to the IL. Finally, the toxicity and biodegradability of ether- and alcohol-functionalized ILs are discussed and cautiously evaluated in light of recent reports. By carefully summarizing literature examples on the properties and applications of oxy-functional designer ILs up till now, it is our intent that this review offers a barometer for gauging future advances in the field as well as a trigger to spur further contemplation of these seemingly inexhaustible and--relative to their potential--virtually untouched fluids. It is abundantly clear that these remarkable fluidic materials are here to stay, just as certain design rules are slowly beginning to emerge. However, in fairness, serendipity also still plays an undeniable role, highlighting the need for both expanded in silico studies and a beacon to attract bright, young researchers to the field (406 references).
Collapse
Affiliation(s)
- Shaokun Tang
- Key Laboratory for Green Chemical Technology of Ministry of Education, School of Chemical Engineering & Technology, Tianjin University, Tianjin 300072, China
| | - Gary A. Baker
- Department of Chemistry, University of Missouri-Columbia, Columbia, MO 65211, USA
| | - Hua Zhao
- Chemistry Program, Savannah State University, Savannah, GA 31404, USA
| |
Collapse
|
30
|
Li H, Bhadury PS, Song B, Yang S. Immobilized functional ionic liquids: efficient, green, and reusable catalysts. RSC Adv 2012. [DOI: 10.1039/c2ra21310a] [Citation(s) in RCA: 175] [Impact Index Per Article: 14.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022] Open
|
31
|
Identification of suitable ionic liquids for application in the enzymatic hydrolysis of rutin by an automated screening. Appl Microbiol Biotechnol 2011; 93:2301-8. [PMID: 22159609 DOI: 10.1007/s00253-011-3749-6] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2011] [Revised: 11/02/2011] [Accepted: 11/17/2011] [Indexed: 10/14/2022]
Abstract
An automated method in milliliter scale was developed for the screening of process parameters concerning the hydrolysis of the flavonoid rutin catalyzed by the rhamnosidase activity of naringinase from Penicillium decumbens. Besides the effect of additives such as ionic liquids and low molecular salts, the productivity in a multiple phase system as well as the recyclability of the enzyme in repetitive batches were studied. The hydrophobic ionic liquid (IL) trihexyl(tetradecyl)phosphonium bis(trifluormethylsulfonyl)imide [P(h(3))t][Tf(2)N] was identified to combine the most favorable characteristics out of 23 investigated ILs with regard to enzyme compatibility, substrate solubility and enzyme partition coefficient. Also, for the corresponding cations 1-ethyl-3-methylimidazolium [EMIM], 1-butyl-3-methylimidazolium [BMIM], 1-butyl-1-methylpyrrolidinium [BMPL] and 1-octyl-3-methylimidazolium [OMIM], the entity with the [Tf(2)N] anion was best tolerated by the naringinase. With increasing IL content, higher space time yields with up to 1.5 g/(L h) for 80% (v/v) [P(h(3))t][Tf(2)N] were achieved. Enhanced specific enzyme activity was observed in the presence of Ca(2+) ions. By addition of [P(h(3))t][Tf(2)N] and calcium chloride, the reactive aqueous phase was successfully used in three repetitive batches with full conversion.
Collapse
|
32
|
Figueira JDA, Dias FFG, Sato HH, Fernandes P. Screening of Supports for the Immobilization of β-Glucosidase. Enzyme Res 2011; 2011:642460. [PMID: 21915374 PMCID: PMC3170910 DOI: 10.4061/2011/642460] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2011] [Revised: 07/13/2011] [Accepted: 07/13/2011] [Indexed: 11/20/2022] Open
Abstract
A set of supports were screened for the immobilization of a partially purified extract of β-glucosidase from Aspergillus sp. These supports, namely, Eupergit, Amberlite, alginate, gelatin, polyvinyl alcohol- (PVA-) based matrices (Lentikats), and sol-gel, have proved effective for the implementation of some other enzyme-based processes. The initial criterion for selection of promising supports prior to further characterization relied on the retention of the catalytic activity following immobilization. Based on such criterion, where immobilization in sol-gel and in Lentikats outmatched the remaining approaches, those two systems were further characterized. Immobilization did not alter the pH/activity profile, whereas the temperature/activity profile was improved when sol-gel support was assayed. Both thermal and pH stability were improved as a result of immobilization. An increase in the apparent KM (Michaelis constant) was observed following immobilization, suggesting diffusion limitations.
Collapse
Affiliation(s)
- Joelise de Alencar Figueira
- Department of Bioengineering, Higher Technical Institute (IST), Avenida Rovisco Pais, 1049-001 Lisboa, Portugal
| | | | | | | |
Collapse
|
33
|
Naringinases: occurrence, characteristics, and applications. Appl Microbiol Biotechnol 2011; 90:1883-95. [DOI: 10.1007/s00253-011-3176-8] [Citation(s) in RCA: 61] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/19/2010] [Revised: 02/08/2011] [Accepted: 02/09/2011] [Indexed: 12/26/2022]
|