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Haneef INHM, Buys YF, Shaffiar NM, Abdul Hamid AM, Shaharuddin SIS, Fitriani. Composition optimization of PLA/PPC/HNT nanocomposites for mandibular fixation plate using single-factor experimental design. J Mech Behav Biomed Mater 2022; 135:105423. [DOI: 10.1016/j.jmbbm.2022.105423] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2022] [Revised: 08/15/2022] [Accepted: 08/17/2022] [Indexed: 10/31/2022]
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Tazi K, Jamai L, Seddouk L, Ettayebi M, Mohammed AM, Aleya L, Idrissi AJ. Improving carbohydrate accumulation in Chlamydomonas debaryana induced by sulfur starvation using response surface methodology. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2022; 29:23949-23962. [PMID: 34817813 DOI: 10.1007/s11356-021-17583-3] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/19/2021] [Accepted: 11/13/2021] [Indexed: 06/13/2023]
Abstract
Most methods that promote carbohydrate production negatively affect cell growth and microalgal biomass production. This study explores, in a two-stage cultivation strategy, in Chlamydomonas debaryana the optimization of certain culture conditions for high carbohydrate production without loss of biomass. In the first stage, the interaction between sodium bicarbonate supplementation, aeration, and different growth periods was optimized using the response surface methodology (RMS). The 3-factor Box-Behnken design (BBD) was applied, and a second-order polynomial regression analysis was used to analyze the experimental data. The results showed that 0.45 g L-1 of sodium bicarbonate combined with a good aerated agitation (0.6 L min-1) and a cultivation period of 18 days are optimal to produce 5.02 g L-1 of biomass containing 43% of carbohydrates.Under these optimized growth conditions, accumulation of carbohydrates was studied using different modes of nutritional stress. The results indicated that carbohydrate content was improved and the maximum accumulation (about 60% of the dry weight) was recorded under sulfur starvation with only a 14% reduction in biomass as compared to control. This study showed promising results as to biomass production and carbohydrate yield by the microalgae C. debaryana in view of production of third-generation biofuels.
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Affiliation(s)
- Karima Tazi
- Laboratory of Biotechnology, Conservation and Valorization of Natural Resources, Faculty of Sciences DM, Sidi Mohammed Ben Abdellah, University of Fez, P.O. Box 1796, Atlas-Fez, Morocco
| | - Latifa Jamai
- Biodiversity-Bioenergy-Environment (BBE) Research Group, Faculty of Sciences, SMBA University of Fez, Fez, Morocco
| | - Loubna Seddouk
- Laboratory of Biotechnology, Conservation and Valorization of Natural Resources, Faculty of Sciences DM, Sidi Mohammed Ben Abdellah, University of Fez, P.O. Box 1796, Atlas-Fez, Morocco
| | - Mohamed Ettayebi
- Biodiversity-Bioenergy-Environment (BBE) Research Group, Faculty of Sciences, SMBA University of Fez, Fez, Morocco
| | - Alaoui-Mhamdi Mohammed
- Laboratory of Biotechnology, Conservation and Valorization of Natural Resources, Faculty of Sciences DM, Sidi Mohammed Ben Abdellah, University of Fez, P.O. Box 1796, Atlas-Fez, Morocco
- Biodiversity-Bioenergy-Environment (BBE) Research Group, Faculty of Sciences, SMBA University of Fez, Fez, Morocco
| | - Lotfi Aleya
- CNRS 6249-Université de Franche-Comté, 16, route de Gray, F-25030, Besançon cedex, France.
| | - Abdellatif Janati Idrissi
- Laboratory of Biotechnology, Conservation and Valorization of Natural Resources, Faculty of Sciences DM, Sidi Mohammed Ben Abdellah, University of Fez, P.O. Box 1796, Atlas-Fez, Morocco
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Zhao B, Zhou L, Ma L, He Y, Gao J, Li D, Jiang Y. Co-immobilization of glucose oxidase and catalase in silica inverse opals for glucose removal from commercial isomaltooligosaccharide. Int J Biol Macromol 2017; 107:2034-2043. [PMID: 29051100 DOI: 10.1016/j.ijbiomac.2017.10.074] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/22/2017] [Revised: 10/06/2017] [Accepted: 10/12/2017] [Indexed: 10/18/2022]
Abstract
In this work, glucose oxidase (GOD) and catalase (CAT) were co-immobilized on novel silica inverse opals (IO-SiO2) through sol-gel process. The immobilized bi-enzyme system named GOD/CAT@IO-SiO2 was successfully fabricated and characterized. Morphology characterization indicated that GOD/CAT@IO-SiO2 had hierarchical porous structure, and the pore diameter of macroporous and mesoporous were 500±50nm and 6.8nm, respectively. The macrospores were connected through windows of 100±30nm. The results of stability tests indicated that both acid (or base) resistance and thermal tolerance of GOD/CAT@IO-SiO2 were improved. When GOD/CAT@IO-SiO2 was used to remove glucose from commercial isomaltooligosaccharide (IMO), the immobilized bi-enzyme system exhibited the good performance. The removal efficiency of glucose reached up to 98.97% under the conditions of GOD/CAT activity ratio of 1:30, the amount of enzyme of 68.8mg, reaction time of 9.39h, reaction temperature of 35.2°C and pH of 7.05. After reused 6 times, 79.19% of removal efficiency could be still retained. The present work demonstrates that the immobilized bi-enzyme (GOD/CAT@IO-SiO2) is not only a very promising system for glucose removal but also has great potential for applications in production of gluconic acid, preparation of biosensors, enzyme bioreactors, etc.
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Affiliation(s)
- Bin Zhao
- School of Chemical Engineering and Technology, Hebei University of Technology, Tianjin 300130, China
| | - Liya Zhou
- School of Chemical Engineering and Technology, Hebei University of Technology, Tianjin 300130, China.
| | - Li Ma
- School of Chemical Engineering and Technology, Hebei University of Technology, Tianjin 300130, China
| | - Ying He
- School of Chemical Engineering and Technology, Hebei University of Technology, Tianjin 300130, China
| | - Jing Gao
- School of Chemical Engineering and Technology, Hebei University of Technology, Tianjin 300130, China
| | - Dan Li
- School of Chemical Engineering and Technology, Hebei University of Technology, Tianjin 300130, China
| | - Yanjun Jiang
- School of Chemical Engineering and Technology, Hebei University of Technology, Tianjin 300130, China; National-Local Joint Engineering Laboratory for Energy Conservation of Chemical Process Integration and Resources Utilization, Hebei University of Technology, Tianjin 300130, China.
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Karambeigi MS, Abbassi R, Roayaei E, Emadi MA. Emulsion flooding for enhanced oil recovery: Interactive optimization of phase behavior, microvisual and core-flood experiments. J IND ENG CHEM 2015. [DOI: 10.1016/j.jiec.2015.04.019] [Citation(s) in RCA: 78] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Ma YJ, Yuan XZ, Xin-Peng, Hou-Wang, Huang HJ, Shan-Bao, Huan-Liu, Xiao ZH, Zeng GM. The pseudo-ternary phase diagrams and properties of anionic–nonionic mixed surfactant reverse micellar systems. J Mol Liq 2015. [DOI: 10.1016/j.molliq.2014.12.043] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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Glucose oxidase and catalase co-immobilization on biosynthesized nanoporous SiO2 for removal of dissolved oxygen in water: Corrosion controlling of boilers. J IND ENG CHEM 2014. [DOI: 10.1016/j.jiec.2013.10.016] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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