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El-Sayed MH, Gomaa AERF, Atta OM, Hassane AMA. Characteristics and kinetics of thermophilic actinomycetes' amylase production on agro-wastes and its application for ethanol fermentation. World J Microbiol Biotechnol 2024; 40:255. [PMID: 38926189 DOI: 10.1007/s11274-024-04009-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2024] [Accepted: 04/29/2024] [Indexed: 06/28/2024]
Abstract
Thermophilic actinomycetes are commonly found in extreme environments and can thrive and adapt to extreme conditions. These organisms exhibit substantial variation and garnered significant interest due to their remarkable enzymatic activities. This study evaluated the potential of Streptomyces griseorubens NBR14 and Nocardiopsis synnemataformans NBRM9 strains to produce thermo-stable amylase via submerged fermentation using wheat and bean straw. The Box-Behnken design was utilized to determine the optimum parameters for amylase biosynthesis. Subsequently, amylase underwent partial purification and characterization. Furthermore, the obtained hydrolysate was applied for ethanol fermentation using Saccharomyces cerevisiae. The optimal parameters for obtaining the highest amylase activity by NBR14 (7.72 U/mL) and NBRM9 (26.54 U/mL) strains were found to be 40 and 30 °C, pH values of 7, incubation time of 7 days, and substrate concentration (3 and 2 g/100 mL), respectively. The NBR14 and NBRM9 amylase were partially purified, resulting in specific activities of 251.15 and 144.84 U/mg, as well as purification factors of 3.91 and 2.69-fold, respectively. After partial purification, the amylase extracted from NBR14 and NBRM9 showed the highest activity level at pH values of 9 and 7 and temperatures of 50 and 60 °C, respectively. The findings also indicated that the maximum velocity (Vmax) for NBR14 and NBRM9 amylase were 57.80 and 59.88 U/mL, respectively, with Km constants of 1.39 and 1.479 mM. After 48 h, bioethanol was produced at concentrations of 5.95 mg/mL and 9.29 mg/mL from hydrolyzed wheat and bean straw, respectively, through fermentation with S. cerevisiae. Thermophilic actinomycetes and their α-amylase yield demonstrated promising potential for sustainable bio-ethanol production from agro-byproducts.
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Affiliation(s)
- Mohamed H El-Sayed
- Department of Biology, College of Science and Arts-Rafha, Northern Border University, Arar, Saudi Arabia
- Department of Botany and Microbiology, Faculty of Science, Al-Azhar University, Cairo, 11884, Egypt
| | - Abd El-Rahman F Gomaa
- Department of Botany and Microbiology, Faculty of Science, Assiut Branch, Al-Azhar University, Assiut, 71524, Egypt.
- The Key Laboratory of Biotechnology for Medicinal Plants of Jiangsu Province, School of Life Science, Jiangsu Normal University, Xuzhou, Jiangsu, China.
| | - Omar Mohammad Atta
- Department of Botany and Microbiology, Faculty of Science, Assiut Branch, Al-Azhar University, Assiut, 71524, Egypt
| | - Abdallah M A Hassane
- Department of Botany and Microbiology, Faculty of Science, Assiut Branch, Al-Azhar University, Assiut, 71524, Egypt.
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Najar IN, Sharma P, Das R, Tamang S, Mondal K, Thakur N, Gandhi SG, Kumar V. From waste management to circular economy: Leveraging thermophiles for sustainable growth and global resource optimization. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2024; 360:121136. [PMID: 38759555 DOI: 10.1016/j.jenvman.2024.121136] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/07/2023] [Revised: 04/24/2024] [Accepted: 05/09/2024] [Indexed: 05/19/2024]
Abstract
Waste of any origin is one of the most serious global and man-made concerns of our day. It causes climate change, environmental degradation, and human health problems. Proper waste management practices, including waste reduction, safe handling, and appropriate treatment, are essential to mitigate these consequences. It is thus essential to implement effective waste management strategies that reduce waste at the source, promote recycling and reuse, and safely dispose of waste. Transitioning to a circular economy with policies involving governments, industries, and individuals is essential for sustainable growth and waste management. The review focuses on diverse kinds of environmental waste sources around the world, such as residential, industrial, commercial, municipal services, electronic wastes, wastewater sewerage, and agricultural wastes, and their challenges in efficiently valorizing them into useful products. It highlights the need for rational waste management, circularity, and sustainable growth, and the potential of a circular economy to address these challenges. The article has explored the role of thermophilic microbes in the bioremediation of waste. Thermophiles known for their thermostability and thermostable enzymes, have emerged to have diverse applications in biotechnology and various industrial processes. Several approaches have been explored to unlock the potential of thermophiles in achieving the objective of establishing a zero-carbon sustainable bio-economy and minimizing waste generation. Various thermophiles have demonstrated substantial potential in addressing different waste challenges. The review findings affirm that thermophilic microbes have emerged as pivotal and indispensable candidates for harnessing and valorizing a range of environmental wastes into valuable products, thereby fostering the bio-circular economy.
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Affiliation(s)
- Ishfaq Nabi Najar
- Fermentation and Microbial Biotechnology Division, CSIR IIIM, Jammu, India
| | - Prayatna Sharma
- Department of Microbiology, School of Life Sciences, Sikkim University, Gairigaon, Tadong, Gangtok, 737102, Sikkim, India
| | - Rohit Das
- Department of Microbiology, School of Life Sciences, Sikkim University, Gairigaon, Tadong, Gangtok, 737102, Sikkim, India
| | - Sonia Tamang
- Department of Microbiology, School of Life Sciences, Sikkim University, Gairigaon, Tadong, Gangtok, 737102, Sikkim, India
| | | | - Nagendra Thakur
- Department of Microbiology, School of Life Sciences, Sikkim University, Gairigaon, Tadong, Gangtok, 737102, Sikkim, India
| | | | - Vinod Kumar
- Fermentation and Microbial Biotechnology Division, CSIR IIIM, Jammu, India.
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Ben Hadj Hmida B, Ben Mabrouk S, Fendri A, Hmida-Sayari A, Sayari A. Optimization of newly isolated Bacillus cereus α-amylase production using orange peels and crab shells and application in wastewater treatment. 3 Biotech 2024; 14:119. [PMID: 38524238 PMCID: PMC10959860 DOI: 10.1007/s13205-024-03962-3] [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: 11/23/2023] [Accepted: 02/22/2024] [Indexed: 03/26/2024] Open
Abstract
A newly isolated amylolytic strain was identified as Bacillus cereus spH1 based on 16S and 16-23S gene sequencing (Accession numbers OP811441.1 and OP819558, respectively), optimization strategies, using one variable at time (OVAT) and Plackett-Burman design, were employed to improve the alpha-amylase (α-amylase) production. Condition inferred revealed that the optimal physical parameters for maximum enzyme production were 30 °C, pH 7.5, and 12 h of incubation, using tryptone, malt extract, orange (Citrus sinensis) peels, crab (Portunus segnis) shells, calcium, and sodium chloride (NaCl) as culture medium. The full factorial design (FFD) model was observed to possess a predicted R2 and adjusted R2 values of 0.9788 and 0.9862, respectively, and it can effectively predict the response variables (p = 0). Following such efforts, α-amylase activity was increased 141.6-folds, ranging from 0.06 to 8.5 U/mL. The ideal temperature and pH for the crude enzyme activity were 65 °C and 7.5, respectively. The enzyme exhibited significant stability, with residual activity over 90% at 55 °C. The maltose was the only product generated during the starch hydrolysis. Moreover, the Bacillus cereus spH1 strain and its α-amylase were used in the treatment of effluents from the pasta industry. Germination index percentages of 143% and 139% were achieved when using the treated effluent with α-amylase and the strain, respectively. This work proposes the valorization of agro-industrial residues to improve enzyme production and to develop a green and sustainable approach that holds great promise for environmental and economic challenges.
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Affiliation(s)
- Bouthaina Ben Hadj Hmida
- Laboratoire de Biochimie et de Génie Enzymatique des Lipases (LBGEL), ENIS, University of Sfax, Route Soukra, 3038 Sfax, Tunisia
| | - Sameh Ben Mabrouk
- Laboratoire de Biochimie et de Génie Enzymatique des Lipases (LBGEL), ENIS, University of Sfax, Route Soukra, 3038 Sfax, Tunisia
| | - Ahmed Fendri
- Laboratoire de Biochimie et de Génie Enzymatique des Lipases (LBGEL), ENIS, University of Sfax, Route Soukra, 3038 Sfax, Tunisia
| | - Aïda Hmida-Sayari
- Laboratoire de Biotechnologie Microbienne et d’Ingénierie des Enzymes (LBMIE), Centre de Biotechnologie de Sfax (CBS), University of Sfax, Route Sidi Mansour, 3018 Sfax, Tunisia
| | - Adel Sayari
- Laboratoire de Biochimie et de Génie Enzymatique des Lipases (LBGEL), ENIS, University of Sfax, Route Soukra, 3038 Sfax, Tunisia
- Department of Biological Sciences, College of Science, University of Jeddah, 23890 Jeddah, Saudi Arabia
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Bocker R, Silva EK. Pulsed electric field technology as a promising pre-treatment for enhancing orange agro-industrial waste biorefinery. RSC Adv 2024; 14:2116-2133. [PMID: 38196909 PMCID: PMC10775899 DOI: 10.1039/d3ra07848e] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2023] [Accepted: 12/24/2023] [Indexed: 01/11/2024] Open
Abstract
In the processing of orange juice, 50-70% of the fresh fruit weight is converted into organic waste. Orange processing waste (OPW) primarily consists of peels, seeds, and pulp. Improper disposal of this residue can lead to greenhouse gas emissions, environmental pollution, and the wastage of natural resources. To address this ecological issues, recent research has focused on developing innovative process designs to maximize the valorization of OPW through biorefinery strategies. However, the current challenge in implementing these methods for industrial waste management is their significant energy consumption. In response to these challenges, recent studies have explored the potential of employing pulsed electric field (PEF) technology as a pre-treatment to improve energy efficiency in biorefinery processes. This non-thermal and emerging technology can enhance the mass transfer of intracellular components via electroporation of cell walls, thereby resulting in shorter processing times, lower energy inputs, greater retention of thermosensitive components, and higher extraction yields. In this regard, this review offers a comprehensive discussion on the innovative biorefinery strategies to the valorization of OPW, with a specific focus on recent studies assessing the technical feasibility of methodologies for the extraction of phytochemical compounds, dehydration processes, and bioconversion methods. Recent studies that discussed the potential of PEF technology to reduce energy demand by increasing the mass transfer of biological tissues were emphasized.
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Affiliation(s)
- Ramon Bocker
- Faculdade de Engenharia de Alimentos (FEA), Universidade Estadual de Campinas (UNICAMP) Rua Monteiro Lobato, 80 Campinas-SP CEP:13083-862 Brazil
| | - Eric Keven Silva
- Faculdade de Engenharia de Alimentos (FEA), Universidade Estadual de Campinas (UNICAMP) Rua Monteiro Lobato, 80 Campinas-SP CEP:13083-862 Brazil
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Chong JWR, Tang DYY, Leong HY, Khoo KS, Show PL, Chew KW. Bridging artificial intelligence and fucoxanthin for the recovery and quantification from microalgae. Bioengineered 2023; 14:2244232. [PMID: 37578162 PMCID: PMC10431731 DOI: 10.1080/21655979.2023.2244232] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2023] [Revised: 07/30/2023] [Accepted: 07/31/2023] [Indexed: 08/15/2023] Open
Abstract
Fucoxanthin is a carotenoid that possesses various beneficial medicinal properties for human well-being. However, the current extraction technologies and quantification techniques are still lacking in terms of cost validation, high energy consumption, long extraction time, and low yield production. To date, artificial intelligence (AI) models can assist and improvise the bottleneck of fucoxanthin extraction and quantification process by establishing new technologies and processes which involve big data, digitalization, and automation for efficiency fucoxanthin production. This review highlights the application of AI models such as artificial neural network (ANN) and adaptive neuro fuzzy inference system (ANFIS), capable of learning patterns and relationships from large datasets, capturing non-linearity, and predicting optimal conditions that significantly impact the fucoxanthin extraction yield. On top of that, combining metaheuristic algorithm such as genetic algorithm (GA) can further improve the parameter space and discovery of optimal conditions of ANN and ANFIS models, which results in high R2 accuracy ranging from 98.28% to 99.60% after optimization. Besides, AI models such as support vector machine (SVM), convolutional neural networks (CNNs), and ANN have been leveraged for the quantification of fucoxanthin, either computer vision based on color space of images or regression analysis based on statistical data. The findings are reliable when modeling for the concentration of pigments with high R2 accuracy ranging from 66.0% - 99.2%. This review paper has reviewed the feasibility and potential of AI for the extraction and quantification purposes, which can reduce the cost, accelerate the fucoxanthin yields, and development of fucoxanthin-based products.
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Affiliation(s)
- Jun Wei Roy Chong
- Department of Chemical and Environmental Engineering, Faculty of Science and Engineering, University of Nottingham Malaysia, Jalan Broga, Semenyih, Selangor Darul Ehsan, Malaysia
| | - Doris Ying Ying Tang
- Department of Chemical and Environmental Engineering, Faculty of Science and Engineering, University of Nottingham Malaysia, Jalan Broga, Semenyih, Selangor Darul Ehsan, Malaysia
| | - Hui Yi Leong
- ISCO (Nanjing) Biotech-Company, Nanjing, Jiangning, China
| | - Kuan Shiong Khoo
- Department of Chemical Engineering and Materials Science, Yuan Ze University, Taoyuan, Taiwan
- Faculty of Allied Health Sciences, Chettinad Hospital and Research Institute, Chettinad Academy of Research and Education, Kelambakkam, Tamil Nadu, India
| | - Pau Loke Show
- Department of Chemical Engineering, Khalifa University, Abu Dhabi, United Arab Emirates
| | - Kit Wayne Chew
- School of Chemistry, Chemical Engineering and Biotechnology, Nanyang Technological University, Singapore, Singapore
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Dobariya A, Mankad GP, Ramavat H, Singh SP. Efficacy of the Fruit and Vegetable Peels as Substrates for the Growth and Production of α-Amylases in Marine Actinobacteria. Appl Biochem Biotechnol 2023; 195:7603-7623. [PMID: 37067678 DOI: 10.1007/s12010-023-04422-z] [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] [Accepted: 02/17/2023] [Indexed: 04/18/2023]
Abstract
Enzymes from haloalkaliphilic microorganisms have recently focused attention on their potential and suitability in various applications. In this study, the growth and production of extracellular amylases in the marine actinomycetes, using kitchen waste as the raw starch source, have been investigated. Actinobacteria were isolated from the seawater of the Kachhighadi Coast near Dwarika, Gujarat. Seven Actinobacterial isolates of pre-monsoon, monsoon, and post-monsoon seasons belonging to different strains of Nocardiopsis genera were screened and selected for amylase production. The amylase production was initially assessed on the solid media supplemented with the extracts of different fruits and vegetable peels as a substrate by agar plate assay. The strains Kh-2(13), Kh-2(1), and Kh-3(12) produced maximum amylase with potato peel as a substrate, while no significant differences were found with the media containing other peels. Nevertheless, all strains produced amylases at a significant level with other raw substrates as well. For the optimization of the growth and enzyme production, the selected two isolates Kh-2(13) and Kh-3(12) of the monsoon and winter seasons were cultivated in a liquid medium under the submerged fermentation conditions, with potato peel as a substrate. In both organisms, the optimum amylase production was observed in the stationary phase of growth. For amylase production, the effect of different physical and chemical parameters was evaluated. The optimum growth and amylase production was achieved in 2% inoculum size, at pH 8.0, 28℃, and 5% salt concentration. On the basis of the amylase production index (API) (a ratio of the amylase units and cell growth), both isolates produced significant amylase with the only extract of potato peels, without any other supplements. The trends further indicated that while additional complex sources, such as yeast extract and peptone can enhance the cell growth of the actinobacteria, the amylase production remained unaltered. The study projects the significance of waste raw materials for the production of enzymes in extremophilic microorganisms.
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Affiliation(s)
- Ankita Dobariya
- UGC-CAS Department of Biosciences, Saurashtra University, Rajkot, 360005, India
- M.V.M. Sci and H. Sci. College Rajkot, Rajkot, 360001, India
| | - Gira P Mankad
- M.V.M. Sci and H. Sci. College Rajkot, Rajkot, 360001, India
| | - Hasti Ramavat
- UGC-CAS Department of Biosciences, Saurashtra University, Rajkot, 360005, India
| | - Satya P Singh
- UGC-CAS Department of Biosciences, Saurashtra University, Rajkot, 360005, India.
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Alloun W, Berkani M, Benaissa A, Shavandi A, Gares M, Danesh C, Lakhdari D, Ghfar AA, Chaouche NK. Waste valorization as low-cost media engineering for auxin production from the newly isolated Streptomyces rubrogriseus AW22: Model development. CHEMOSPHERE 2023; 326:138394. [PMID: 36925000 DOI: 10.1016/j.chemosphere.2023.138394] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/26/2023] [Revised: 02/26/2023] [Accepted: 03/11/2023] [Indexed: 06/18/2023]
Abstract
Indole-3-acetic acid (IAA) represents a crucial phytohormone regulating specific tropic responses in plants and functions as a chemical signal between plant hosts and their symbionts. The Actinobacteria strain of AW22 with high IAA production ability was isolated in Algeria for the first time and was characterized as Streptomyces rubrogriseus through chemotaxonomic analysis and 16 S rDNA sequence alignment. The suitable medium for a maximum IAA yield was engineered in vitro and in silico using machine learning-assisted modeling. The primary low-cost feedstocks comprised various concentrations of spent coffee grounds (SCGs) and carob bean grounds (CBGs) extracts. Further, we combined the Box-Behnken design from response surface methodology (BBD-RSM) with artificial neural networks (ANNs) coupled with the genetic algorithm (GA). The critical process parameters screened via Plackett-Burman design (PBD) served as BBD and ANN-GA inputs, with IAA yield as the output variable. Analysis of the putative IAA using thin-layer chromatography (TLC) and (HPLC) revealed Rf values equal to 0.69 and a retention time of 3.711 min, equivalent to the authentic IAA. AW 22 achieved a maximum IAA yield of 188.290 ± 0.38 μg/mL using the process parameters generated by the ANN-GA model, consisting of L-Trp, 0.6%; SCG, 30%; T°, 25.8 °C; and pH 9, after eight days of incubation. An R2 of 99.98%, adding to an MSE of 1.86 × 10-5 at 129 epochs, postulated higher reliability of ANN-GA-approach in predicting responses, compared with BBD-RSM modeling exhibiting an R2 of 76.28%. The validation experiments resulted in a 4.55-fold and 4.46-fold increase in IAA secretion, corresponding to ANN-GA and BBD-RSM models, respectively, confirming the validity of both models.
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Affiliation(s)
- Wiem Alloun
- Laboratory of Mycology, Biotechnology and Microbial Activity (LaMyBAM), Department of Applied Biology, Constantine 1 University, BP, 325, Aïn El Bey, Constantine, 25017, Algeria.
| | - Mohammed Berkani
- Biotechnology Laboratory, National Higher School of Biotechnology, Ali Mendjeli University City, BP E66, 25100, Constantine, Algeria.
| | - Akila Benaissa
- Pharmaceutical Research and Sustainable Development Laboratory (ReMeDD), Department of Pharmaceutical Engineering, Faculty of Process Engineering, Constantine 3 University, Constantine, 25000, Algeria
| | - Amin Shavandi
- 3BIO-BioMatter Unit, École Polytechnique de Bruxelles, Université Libre de Bruxelles (ULB), Avenue F.D. Roosevelt, 50-CP 165/61, 1050, Brussels, Belgium
| | - Maroua Gares
- Laboratory of Mycology, Biotechnology and Microbial Activity (LaMyBAM), Department of Applied Biology, Constantine 1 University, BP, 325, Aïn El Bey, Constantine, 25017, Algeria
| | - Camellia Danesh
- The University of Johannesburg, Department of Chemical Engineering, P.O. Box 17011, Doornfontein, 2088, South Africa.
| | - Delloula Lakhdari
- Biotechnology Laboratory, National Higher School of Biotechnology, Ali Mendjeli University City, BP E66, 25100, Constantine, Algeria; Research Center in Industrial Technologies CRTI, P.O. Box 64, Cheraga 16014, Algiers, Algeria
| | - Ayman A Ghfar
- Department of Chemistry, College of Science, King Saud University, P.O. Box 2455, Riyadh, 11451, Saudi Arabia
| | - Noreddine Kacem Chaouche
- Laboratory of Mycology, Biotechnology and Microbial Activity (LaMyBAM), Department of Applied Biology, Constantine 1 University, BP, 325, Aïn El Bey, Constantine, 25017, Algeria
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Saha SP, Ghosh S, Mazumdar D, Ghosh S, Ghosh D, Sarkar MM, Roy S. Valorization of banana peel into α-amylase using one factor at a time (OFAT) assisted artificial neural network (ANN) and its partial purification, characterization, and kinetics study. FOOD BIOSCI 2023. [DOI: 10.1016/j.fbio.2023.102533] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/07/2023]
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Boudjelal F, Zitouni A, Bouras N, Spröer C, Klenk HP, Smaoui S, Mathieu F. Rare Halophilic Nocardiopsis from Algerian Saharan Soils as Tools for Biotechnological Processes in Pharmaceutical Industry. BIOMED RESEARCH INTERNATIONAL 2023; 2023:1061176. [PMID: 37284028 PMCID: PMC10241594 DOI: 10.1155/2023/1061176] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 12/14/2022] [Revised: 05/01/2023] [Accepted: 05/15/2023] [Indexed: 06/08/2023]
Abstract
The Sahara Desert, one of the most extreme ecosystems in the planet, constitutes an unexplored source of microorganisms such as mycelial bacteria. In this study, we investigated the diversity of halophilic actinobacteria in soils collected from five regions of the Algerian Sahara. A total of 23 halophilic actinobacterial strains were isolated by using a humic-vitamin agar medium supplemented with 10% NaCl. The isolated halophilic strains were subjected to taxonomic analysis using a polyphasic approach, which included morphological, chemotaxonomic, physiological (numerical taxonomy), and phylogenetic analyses. The isolates showed abundant growth in CMA (complex medium agar) and TSA (tryptic soy agar) media containing 10% NaCl, and chemotaxonomic characteristics were consistent with their assignment to the genus Nocardiopsis. Analysis of the 16S rRNA sequence of 23 isolates showed five distinct clusters and a similarity level ranging between 98.4% and 99.8% within the Nocardiopsis species. Comparison of their physiological characteristics with the nearest species showed significant differences with the closely related species. Halophilic Nocardiopsis isolated from Algerian Sahara soil represents a distinct phyletic line suggesting a potential new species. Furthermore, the isolated strains of halophilic Nocardiopsis were screened for their antagonistic properties against a broad spectrum of microorganisms by the conventional agar method (agar cylinders method) and found to have the capacity to produce bioactive secondary metabolites. Except one isolate (AH37), all isolated Nocardiopsis showed moderate to high biological activities against Pseudomonas syringae and Salmonella enterica, and some isolates showed activities against Agrobacterium tumefaciens, Serratia marcescens, and Klebsiella pneumoniae. However, no isolates were active against Bacillus subtilis, Aspergillus flavus, or Aspergillus niger. The obtained finding implies that the unexplored extreme environments such as the Sahara contain many new bacterial species as a novel drug source for medical and industrial applications.
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Affiliation(s)
- Farida Boudjelal
- Laboratoire de Biologie des Systèmes Microbiens (LBSM), Ecole Normale Supérieure de Kouba, Algiers, Algeria
- Faculty of Biological Sciences (FSB), University of Sciences and Technologies Houari Boumediene (USTHB), BP 32 El Alia, Bab Ezzouar, 16111 Algiers, Algeria
| | - Abdelghani Zitouni
- Laboratoire de Biologie des Systèmes Microbiens (LBSM), Ecole Normale Supérieure de Kouba, Algiers, Algeria
| | - Noureddine Bouras
- Laboratoire de Biologie des Systèmes Microbiens (LBSM), Ecole Normale Supérieure de Kouba, Algiers, Algeria
- Laboratoire de Valorisation et Conservation des Écosystèmes Arides (LVCEA), Faculté des Sciences de la Nature et de la Vie et Sciences de la Terre, Université de Ghardaia, Ghardaia, Algeria
| | - Cathrin Spröer
- Department Bioinformatics and Databases, Leibniz Institute DSMZ-German Collection of Microorganisms and Cell Cultures GmbH, Brunswick, Germany
| | - Hans-Peter Klenk
- School of Natural and Environmental Sciences, Newcastle University, Newcastle upon Tyne, UK
| | - Slim Smaoui
- Laboratory of Microbial Biotechnology and Engineering Enzymes (LMBEE), Center of Biotechnology of Sfax (CBS), University of Sfax, Road of Sidi Mansour Km 6, P.O. Box 1177 3018 Sfax, Tunisia
| | - Florence Mathieu
- Laboratoire de Génie Chimique, UMR 5503 CNRS/INPT/UPS, INP-ENSAT, 1, Université de Toulouse, Avenue de l'Agrobiopôle, 31326 Castanet-Tolosan, France
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The Disposition of Bioactive Compounds from Fruit Waste, Their Extraction, and Analysis Using Novel Technologies: A Review. Processes (Basel) 2022. [DOI: 10.3390/pr10102014] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Fruit waste contains several bioactive components such as polyphenols, polysaccharides, and numerous other phytochemicals, including pigments. Furthermore, new financial opportunities are created by using fruit ‘leftovers’ as a basis for bioactivities that may serve as new foods or food ingredients, strengthening the circular economy’s properties. From a technical standpoint, organic phenolic substances have become more appealing to industry, in addition to their application as nutritional supplements or functional meals. Several extraction methods for recovering phenolic compounds from fruit waste have already been published, most of which involve using different organic solvents. However, there is a growing demand for eco-friendly and sustainable techniques that result in phenolic-rich extracts with little ecological impact. Utilizing these new and advanced green extraction techniques will reduce the global crisis caused by fruit waste management. Using modern techniques, fruit residue is degraded to sub-zero scales, yielding bio-based commodities such as bioactive elements. This review highlights the most favorable and creative methods of separating bioactive materials from fruit residue. Extraction techniques based on environmentally friendly technologies such as bioreactors, enzyme-assisted extraction, ultrasound-assisted extraction, and their combination are specifically covered.
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Taşçı T, Küçükyıldız G, Hepyalçın S, Ciğeroğlu Z, Şahin S, Vasseghian Y. Boron removal from aqueous solutions by chitosan/functionalized-SWCNT-COOH: Development of optimization study using response surface methodology and simulated annealing. CHEMOSPHERE 2022; 288:132554. [PMID: 34648780 DOI: 10.1016/j.chemosphere.2021.132554] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/06/2021] [Revised: 10/03/2021] [Accepted: 10/10/2021] [Indexed: 06/13/2023]
Abstract
Boron contamination in water resources (especially drinking waters and agricultural land) is a major problem for the ecosystem. In this study, a novel synthesized chitosan/functionalized-SWCNT-COOH was prepared to separate boron (as boric acid) from aqueous solutions. Scanning electron microscopy (SEM) and X-ray diffraction (XRD) analysis revealed that SWCNT was dispersed in chitosan homogenously. Moreover, this study has related to the constrained optimization problem with an engineering approach. Response surface method (RSM) with face-centered central composite design (FCCCD) was chosen for maximizing the adsorption capacity as well as determining optimal independent factors such as pH, adsorbent dose, and concentration of boric acid. The optimized response (adsorption capacity) was reached 62.16 mg g-1 under the optimal conditions (98.77 mg L-1 of boric acid concentration, pH of 5.46 and 76 min). The present study has indicated that the synthesized material can be used as an adsorbent for eliminating boric acid from aqueous solutions depending on its high adsorbent capacity to remove boron and has better performance than existing adsorbents. Furthermore, simulated annealing (SA) optimization technique was used to compare the findings of RSM. Moreover, the selected optimization techniques were compared with error functions. The optimal conditions derived from SA were 91.17 mg L-1 of boric acid concentration, pH of 5.86, and 76.17 min. The optimal adsorption capacity of SA was found to be 62.06 mg g-1. These results revealed that the predictions of the two models are very close to each other.
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Affiliation(s)
- Tolga Taşçı
- Uşak University, Engineering Faculty, Department of Chemical Engineering, Uşak, 64300, Turkey
| | - Gürkan Küçükyıldız
- Uşak University, Engineering Faculty, Department of Electrical and Electronics Engineering, Uşak, 64300, Turkey
| | - Selin Hepyalçın
- Uşak University, Engineering Faculty, Department of Chemical Engineering, Uşak, 64300, Turkey
| | - Zeynep Ciğeroğlu
- Uşak University, Engineering Faculty, Department of Chemical Engineering, Uşak, 64300, Turkey.
| | - Selin Şahin
- Istanbul University-Cerrahpaşa, Engineering Faculty, Department of Chemical Engineering, Istanbul, Turkey
| | - Yasser Vasseghian
- Department of Chemical Engineering, Quchan University of Technology, Quchan, Iran.
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12
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Berkani M, Vasseghian Y, Le VT, Dragoi EN, Mousavi Khaneghah A. The Fenton-like reaction for Arsenic removal from groundwater: Health risk assessment. ENVIRONMENTAL RESEARCH 2021; 202:111698. [PMID: 34273366 DOI: 10.1016/j.envres.2021.111698] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/13/2021] [Revised: 07/02/2021] [Accepted: 07/06/2021] [Indexed: 06/13/2023]
Abstract
In this paper, the heterogeneous Fenton like-reaction for Arsenic-contaminated groundwater remediation based on the performance of FeSO4 as an efficient and green catalyst and CaO2 as a source of H2O2 was investigated. To intensify the heterogeneous Fenton process, three oxidants were tested: sodium percarbonate (SPC), sodium persulfate (SPS), and calcium peroxide (CP). The results showed that CP and SPC had a synergetic effect on the rate of Arsenic degradation, while SPS had an antagonistic effect. On the other hand, inorganic ions such as Na+, Mg2+ have a very low impact on the Arsenic removal efficiency, while the anions Cl- and NO3- exhibited significant inhibition of Arsenic degradation. This effect may be imputed to the reaction and conversion of hydroxyl (HO•) radicals to less reactive. Thus, HCO3- and humic acid dramatically raised the degradation rate. Also, the response Surface method based on Box-Behnken design was applied to examine the suitable modeling, and optimized condition of the Fenton like-reaction process, the maximum Arsenic removal efficiency of 94.91% is obtained when [Fe3+]0 = 1.97 mM, [CaO2]0 = 1.74 mM and initial pH = 4.67. The obtained results showed that the Fenton-like reaction is an effective and reliable process for arsenic removal from groundwater with low non-carcinogenic risk (HQ) and carcinogenic risk (CR) values.
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Affiliation(s)
- Mohammed Berkani
- Laboratoire Biotechnologies, Ecole Nationale Supérieure de Biotechnologie, Ville Universitaire Ali Mendjeli, BP E66 25100, Constantine, Algeria
| | - Yasser Vasseghian
- Department of Chemical Engineering, Quchan University of Technology, Quchan, Iran.
| | - Van Thuan Le
- Center for Advanced Chemistry, Institute of Research and Development, Duy Tan University, 03 Quang Trung, Da Nang 550000, Viet Nam; The Faculty of Environmental and Chemical Engineering, Duy Tan University, 03 Quang Trung, Da Nang 550000, Viet Nam.
| | - Elena-Niculina Dragoi
- Faculty of Chemical Engineering and Environmental Protection "Cristofor Simionescu", "Gheorghe Asachi" Technical University, Iasi, Bld Mangeron no 73, 700050, Romania
| | - Amin Mousavi Khaneghah
- Department of Food Science and Nutrition, Faculty of Food Engineering, State University of Campinas (UNICAMP), 13083-862, Campinas, São Paulo, Brazil.
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13
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Núñez-Delgado A, Dominguez JR, Zhou Y, Race M, Domingo JL. New research on reduction and/or elimination of hazardous substances in the design, manufacture and application of chemical products. ENVIRONMENTAL RESEARCH 2021; 201:111601. [PMID: 34181926 DOI: 10.1016/j.envres.2021.111601] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
The Virtual Special Issue (VSI) "New research on reduction and/or elimination of hazardous substances in the design, manufacture and application of chemical products" was initially associated to the "International Conference on Green Chemistry and Sustainable Engineering, GreenChem-20" that was postponed due to the COVID-19 pandemic. Anyway, the international conference will take place in the near future. However, the VSI was maintained in this journal, received a high number of submissions, and selected manuscripts have been accepted after peer-reviewing. The published papers constitute a set of high-quality contributions, which, in the future, could be complemented with others related to additional conferences about similar topics. In this editorial piece, the Editors include brief comments on papers accepted for publication in the Special Issue, as well as additional aspects of interest related to the subject.
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Affiliation(s)
- Avelino Núñez-Delgado
- Dept. Soil Sci. and Agric. Chem., Univ. Santiago de Compostela, Engineering Polytech. School, Campus Univ. S/n, 27002, Lugo, Spain.
| | - Joaquín R Dominguez
- Department of Chemical Engineering and Physical Chemistry, University of Extremadura, Spain
| | - Yaoyu Zhou
- College of Resources and Environment, Hunan Agricultural University, Changsha, 410128, Hunan Province, China
| | - Marco Race
- Department of Civil and Mechanical Engineering, University of Cassino and Southern Lazio, Via di Biasio 43, 03043, Cassino, Italy
| | - José L Domingo
- Laboratory of Toxicology and Environmental Health, School of Medicine, IISPV, Universitat Rovira I Virgili, Reus, Spain
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