Article
Green & Sustainable Science & Technology
Niwas Kumar, Chiranjib Banerjee, Jo-Shu Chang, Pratyoosh Shukla
Summary: Environmental pollution and freshwater crisis are driving the development of new ideas in wastewater treatment. Microalgae show great potential in treating wastewater by efficiently removing pollutants and producing valuable biomass. This review discusses the characteristics of different types of wastewater, challenges in microalgal cultivation systems, and recent advances in microalgae-based wastewater remediation. The review also highlights the potential of sustainable production of industrially important products from microalgal biomass through wastewater bioremediation.
JOURNAL OF CLEANER PRODUCTION
(2022)
Article
Biotechnology & Applied Microbiology
Claudia Capusoni, Immacolata Serra, Silvia Donzella, Concetta Compagno
Summary: Phytic acid is an anti-nutritional compound that can chelate proteins and ions. Phytases are enzymes that catalyze the degradation of phytic acid and are used in industrial processes. After screening 21 yeast species, it was found that phytases from Cyberlindnera jadinii, Kluyveromyces marxianus, and Torulaspora delbrueckeii showed promising activities with tolerance to high temperature and acidic pH. This suggests that these enzymes could be effectively utilized in feed and food-related industries.
FRONTIERS IN BIOENGINEERING AND BIOTECHNOLOGY
(2021)
Article
Food Science & Technology
Serafina Lidia Vilanculos, Ulf Svanberg, Thomas Andlid
Summary: Iron deficiency anemia is a common problem in developing countries due to the consumption of cereals containing high levels of phytate, which can inhibit the absorption of iron and zinc. This study aimed to reduce the phytate content in composite flour bread by adding phytase-producing yeasts during the baking process. The results showed that all three high-phytase yeasts tested effectively reduced the phytate content in the bread. When specific yeast extracts were added, the phytate reduction was even more significant, resulting in enhanced bioavailability of iron and zinc.
FOOD SCIENCE & NUTRITION
(2023)
Article
Food Science & Technology
Tahseena Naaz, Kalpana Sharma, Arpita Roy, Abhilasha Singh Mathuriya, Vineeta Yadav, Soumya Pandit, Mudassir Hasan, Jigisha Anand, Sanket Joshi, Rohit Sharma
Summary: In this study, a methyl orange-degrading bacterium Escherichia coli (E. coli) was isolated from cow dung and its efficiency in degrading methyl orange was investigated. The co-culturing of E. coli and a pre-cultured strain of Pseudomonas aeruginosa in a microbial fuel cell (MFC) resulted in simultaneous electricity production and methyl orange degradation. The study also analyzed the electrochemical characteristics and parameters affecting the degradation efficiency and power density. The results confirmed the effectiveness of E. coli in degrading methyl orange and demonstrated the potential of MFC for wastewater treatment and energy production.
FOOD AND CHEMICAL TOXICOLOGY
(2023)
Article
Environmental Sciences
Mysoon M. Al-Ansari, Hicham Benabdelkamel, Latifah Al-Humaid
Summary: This study investigated the simultaneous production of electricity and bioremediation of sulfadiazine in wastewater using microbial fuel cells (MFCs) and an open circuit system. Results showed that MFCs had high removal efficiency of sulfadiazine and COD, as well as significant impact on the reduction of total phosphorus content in wastewater. However, at higher antibiotic concentrations, reduced microbial activity may lead to inadequate degradation of antibiotics.
Article
Food Science & Technology
Natalie Mayer, Niklas Widderich, Marvin Scherzinger, Paul Bubenheim, Martin Kaltschmitt
Summary: In order to address the scarcity of mineral phosphorus resources and environmental issues arising from enhanced P losses, this study investigates the mechanical separation of phosphorus-rich grain fractions from wheat, rye, barley, and oats for reduced organic P content in animal feed. The utilization of the separated organic P, which is in the form of inositol P, for sustainable phosphorus management is also evaluated. The study finds that specific layers in the grains contain the highest concentrations of inositol P and phytase activity, and their removal could significantly reduce organic P content.
FOOD AND BIOPROCESS TECHNOLOGY
(2023)
Article
Agriculture, Dairy & Animal Science
Moritz Novotny, Vera Sommerfeld, Jochen Krieg, Imke Kuehn, Korinna Huber, Markus Rodehutscord
Summary: A comparison between 3-week-old female turkeys and broilers was conducted to investigate the impact of species, dietary P, Ca, and phytase levels on gut mucosal phosphatase activity, InsP6 degradation, nutrient digestibility, and myo-inositol concentrations. The results showed that both species have similar intrinsic capacity for phytate degradation when fed low P and Ca diets, but differ in InsP degradation and nutrient digestibility in certain segments of the digestive tract.
Article
Agriculture, Dairy & Animal Science
Moritz Novotny, Vera Sommerfeld, Jochen Krieg, Imke Kuehn, Korinna Huber, Markus Rodehutscord
Summary: This study compared female turkeys and broilers at 6 weeks of age to assess the impact of species, dietary P, Ca, and phytase levels on InsP6 degradation, phosphatase activity, P and Ca digestibility, and myo-inositol concentrations. Different diets were fed to the animals for 7 days, and samples were collected from various parts of the digestive tract. The results showed differences in phytate degradation between turkeys and broilers, which could be attributed to age-related changes in the digestive tract.
Article
Microbiology
Yash S. Raval, Abdelrhman Mohamed, Jayawant N. Mandrekar, Cody Fisher, Kerryl E. Greenwood-Quaintance, Haluk Beyenal, Robin Patel
Summary: This study assessed the in vitro antibiofilm activity of an H2O2-producing electrochemical bandage against commonly encountered yeast species. The results showed that the e-bandage effectively reduced viable cell counts of yeast biofilms and caused damage to the cell membrane, as well as a decrease in ATP levels. Therefore, the e-bandage has potential as a new topical treatment approach for fungal wound infections.
ANTIMICROBIAL AGENTS AND CHEMOTHERAPY
(2022)
Article
Microbiology
Marie Kodedova, Vojtech Liska, Jiri Mosinger, Hana Sychrova
Summary: In this study, sulfonated polystyrene nanoparticles encapsulating a tetraphenylporphyrin photosensitizer were found to exhibit strong antifungal effects. Activation of the photosensitizer by visible light generated singlet oxygen, enhancing its antifungal action. Additionally, the presence of potassium iodide further potentiated the antifungal activity by producing I2/I3-. The nanoparticles showed no dark toxicity and demonstrated a broad spectrum of antifungal photodynamic effects.
MICROBIOLOGICAL RESEARCH
(2023)
Article
Microbiology
Monica Ganan, Silje B. Lorentzen, Peter Gaustad, Morten Sorlie
Summary: C32 demonstrates concentration-dependent inhibition of Candida biofilms, reducing viable cells and metabolic activity, while also inhibiting new biofilm formation. When used in combination with fluconazole or miconazole, a synergistic effect on biofilm reduction is observed, indicating the potential of C32 as an alternative therapeutic agent to combat antifungal resistance.
Article
Agricultural Engineering
Hao Luo, Zi-Jun Zhao, Rong Huang, Zhao-Bao Wang, Jian-Qun Lin, Lin-Xu Chen
Summary: Efficient biodiesel production from biomass is crucial for the transition to green energy. This study proposes a strategy to solve the temperature incongruity in biodiesel production by developing thermotolerant yeast strains. Through adaptive laboratory evolution and plasma mutagenesis, a thermotolerant strain capable of growing at high temperatures was obtained. Selecting high lipid content cells resulted in increased lipid accumulation capacity. The use of this strain in simultaneous saccharification fermentation of pretreated corn stover at elevated temperatures yielded high lipid generation efficiency. This study provides a new method and strain for high thermotolerance and high biodiesel-production yeasts.
INDUSTRIAL CROPS AND PRODUCTS
(2023)
Article
Environmental Sciences
Hongyuhang Ni, Aman Khan, Zi Yang, Yuxin Gong, Gohar Ali, Pu Liu, Fengjuan Chen, Xiangkai Li
Summary: This study found that using wood carbon electrode in MFC can effectively enhance the removal efficiency of Cr(VI), and it has higher power density and specific surface area compared to traditional carbon materials like carbon cloth and felt.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2022)
Article
Environmental Sciences
Dinesh Bejjanki, K. Muthukumar, T. K. Radhakrishnan, Arun Alagarsamy, Arivalagan Pugazhendhi, Samsudeen Naina Mohamed
Summary: This study successfully demonstrated the use of Oscillatoria sp. as a biocatalyst in the cathode chamber for enhancing salinity removal, electricity generation, and wastewater treatment in the MDC. The results showed maximum open circuit voltage of 652 +/- 10 mV, COD removal efficiency of 80.2 +/- 0.5%, and desalination efficiency of 65.8 +/- 0.5% were achieved with the use of biocathode during dairy wastewater treatment and desalination process.
SCIENCE OF THE TOTAL ENVIRONMENT
(2021)
Article
Engineering, Environmental
Karla Ilic Durdic, Raluca Ostafe, Olivera Prodanovic, Aleksandra Durdevic Delmas, Nikolina Popovic, Rainer Fischer, Stefan Schillberg, Radivoje Prodanovic
Summary: Enzymatic degradation of azo dyes is a promising alternative to traditional chemical and physical remediation methods. By conducting protein engineering on lignin peroxidase, mutants with improved efficiency in breaking down azo dyes were selected. Cell wall fragments coated with mutant LiP enzymes maintained high dye degradation activity in multiple reaction cycles.
FRONTIERS OF ENVIRONMENTAL SCIENCE & ENGINEERING
(2021)
Article
Biochemistry & Molecular Biology
Ivo Bardarov, Mario Mitov, Desislava Ivanova, Yolina Hubenova
BIOELECTROCHEMISTRY
(2018)
Article
Electrochemistry
Yolina Hubenova, Eleonora Hubenova, Blagoy Burdin, Daria Vladikova, Mario Mitov
ELECTROCHIMICA ACTA
(2019)
Article
Chemistry, Physical
Elitsa Chorbadzhiyska, Ivo Bardarov, Yolina Hubenova, Mario Mitov
Article
Biochemistry & Molecular Biology
Yolina Hubenova, Eleonora Hubenova, Mario Mitov
BIOELECTROCHEMISTRY
(2020)
Article
Electrochemistry
Mario Mitov, Ivo Bardarov, Elitsa Chorbadzhiyska, Krassimir L. Kostov, Yolina Hubenova
Summary: The study presents the proof-of-principle of metal recovery using microbial electrochemical snorkel (MES) for the first time. Experimental comparison of MES setups with and without proton exchange membrane (PEM) isolation and MFC revealed that MES shows superior performance in copper removal and recovery efficiency, surpassing MFC in copper regeneration.
ELECTROCHEMISTRY COMMUNICATIONS
(2021)
Article
Biochemistry & Molecular Biology
Yolina Hubenova, Galin Borisov, Evelina Slavcheva, Mario Mitov
Summary: A novel strain of Gram-positive bacteria Paenibacillus profundus YoMME was identified to possess exoelectrogenicity, capable of generating electricity. The bioanodes formed by this bacteria showed good performance in microbial fuel cells and microbial electrolysis cells, assisting electrolysis processes at a significantly lower voltage to produce hydrogen gas.
BIOELECTROCHEMISTRY
(2022)
Article
Electrochemistry
Mario Mitov, Elitsa Chorbadzhiyska, Ivo Bardarov, Krassimir L. Kostov, Yolina Hubenova
Summary: This study demonstrates the use of microbial electrochemical snorkel (MES) for silver recovery from aqueous solutions for the first time. The results show that MES mode is more advantageous than MFC mode in terms of silver removal and recovery.
ELECTROCHIMICA ACTA
(2022)
Article
Microbiology
Yolina Hubenova, Eleonora Hubenova, Yordan Manasiev, Slavil Peykov, Mario Mitov
Summary: In this study, the draft genome sequence of Paenibacillus profundus YoMME, isolated from the anodic biofilm of a sediment microbial fuel cell, was reported. This bacterium is recognized as one of the few exoelectrogenic Gram-positive bacteria capable of extracellular electron transfer.
MICROBIOLOGY RESOURCE ANNOUNCEMENTS
(2022)
Article
Biochemistry & Molecular Biology
Yolina Hubenova, Elitsa Chorbadzhiyska, Krassimir L. Kostov, Mario Mitov
Summary: The applicability of microbial electrochemical technologies for gold recovery was investigated. It was found that the microbial electrochemical snorkel (MES) mode outperforms the traditional two-chamber microbial fuel cell (MFC) mode in terms of gold removal and recovery. Additionally, gold can be recovered from printed circuit board waste using MES.
BIOELECTROCHEMISTRY
(2023)
Article
Electrochemistry
Yolina Hubenova, Mina Todorova, Rumyana Bakalska, Mario Mitov
Summary: This study examined the spectral and electrochemical properties of three newly synthesized stilbazolium dyes with an enlarged 3t-conjugated system. The dyes were synthesized through Knoevenagel condensation and their composition was confirmed by NMR spectroscopy, elemental analysis, and IR spectroscopy. The solvatochromism, optical band-gap values, HOMO, LUMO energy levels, and electrochemical oxidation/reduction mechanism of the dyes were investigated using UV-Vis and fluorescence spectroscopy, cyclic voltammetry, differential pulse voltammetry, and electrochemical impedance spectroscopy.
Article
Electrochemistry
Yolina Hubenova, Eleonora Hubenova, Mario Mitov
Summary: This study investigates the use of the rootless duckweed Wolffia globosa as a biocatalyst in Plant-based Biofuel Cells (P-BFC) for electricity generation. It is found that W. globosa can produce an electric current, and its metabolic changes lead to increased carbohydrate and protein content. This suggests that W. globosa can be a potential catalyst for P-BFCs.
JOURNAL OF ELECTROCHEMICAL SCIENCE AND ENGINEERING
(2023)
