Article
Environmental Sciences
Neha Arora, George P. Philippidis
Summary: The study reveals that Chlorella vulgaris exhibits better nutrient stress tolerance and redox balancing under mixotrophic conditions, leading to higher biomass and lipid production.
SCIENCE OF THE TOTAL ENVIRONMENT
(2021)
Article
Environmental Sciences
Yabo Sun, Menghan Shi, Tao Lu, Dan Ding, Yingqiang Sun, Yupeng Yuan
Summary: Galdieria sulphuraria, a thermophilic and acidophilic microalga, shows potential in efficiently removing negative charged PtCl62- complex. The accumulation of PtCl62- complexes in EPS and algae cells may be decomposed to PtCl4, indicating successful bio-removal from wastewater.
SCIENCE OF THE TOTAL ENVIRONMENT
(2021)
Article
Plant Sciences
Pablo Perez Saura, Malika Chabi, Amelie Corato, Pierre Cardol, Claire Remacle
Summary: The study found that there was no significant difference in the biomass, fatty acid composition, protein, and storage carbohydrate contents of the extremophilic red microalga Galdieria sulphuraria 074W when grown in heterotrophy compared to photoautotrophic condiitons. However, the presence of glucose resulted in a decrease in pigment content, while the presence of glycerol did not. Transcriptome analysis revealed the transcriptional response of the cells to light and dark environments, as well as the involvement of horizontally transferred gene families in response to the availability of different organic and inorganic sources.
FRONTIERS IN PLANT SCIENCE
(2022)
Article
Biotechnology & Applied Microbiology
Paride Salvatore Occhipinti, Flavia Del Signore, Stefano Canziani, Cinzia Caggia, Valeria Mezzanotte, Narcis Ferrer-Ledo
Summary: The growth of polyextremophile red microalga Galdieria sulphuraria ACUF 064 was studied under mixotrophy and heterotrophy using buttermilk as a carbon source. The results showed no significant differences in growth when lactose, glucose, or galactose were used as carbon sources. However, the biomass yield on carbon was 70% higher in mixotrophy than heterotrophy for galactose and lactose, while it was similar for glucose. This study suggests that lactose-containing substrates such as buttermilk hold promise for the growth of G. sulphuraria while valorizing industrial effluent.
JOURNAL OF APPLIED PHYCOLOGY
(2023)
Article
Plant Sciences
Gilles Curien, Dagmar Lyska, Erika Guglielmino, Phillip Westhoff, Janina Janetzko, Marianne Tardif, Clement Hallopeau, Sabine Brugiere, Davide Dal Bo, Johan Decelle, Benoit Gallet, Denis Falconet, Michele Carone, Claire Remacle, Myriam Ferro, Andreas P. M. Weber, Giovanni Finazzi
Summary: It has been shown that G. sulphuraria can grow under different nutritional modes; under mixotrophic conditions, the addition of organic carbon can alleviate the inorganic carbon limitation in photosynthesis.
Article
Environmental Sciences
C. Manfredi, A. J. Amoruso, C. Ciniglia, M. Iovinella, M. Palmieri, C. Lubritto, A. El Hassanin, S. J. Davis, M. Trifuoggi
Summary: The biosorption of trivalent Lanthanides from aqueous solutions onto Galdieria sulphuraria lifeless cells was studied. The experiments were conducted at 25 degrees C in 0.5 M NaCl. Ln3+ biosorption was found to be optimal in the pH range of 5-6, with adsorption capacities ranging from 80 mu mol/g to 130 mu mol/g (dry weight). The study highlights specific molecular interactions between Ln3+ ions and functional groups on G. sulphuraria surface.
Article
Biotechnology & Applied Microbiology
Shanglei Pan, Kyleigh L. Dixon, Tabish Nawaz, Ashiqur Rahman, Thinesh Selvaratnam
Summary: This study found that 20% LL performed the best for the growth of Galdieria sulphuraria, with significantly higher biomass and growth rate compared to other dilutions. Addition of phosphorus increased the removal rate of ammoniacal-nitrogen, and N/P mass ratios ranging from 25:1 to 100:1 achieved almost 100% removal efficiency.
ALGAL RESEARCH-BIOMASS BIOFUELS AND BIOPRODUCTS
(2021)
Article
Biotechnology & Applied Microbiology
A. Sanchez-Zurano, S. Villaro-Cos, M. Ciardi, F. G. Acien-Fernandez, J. M. Fernandez-Sevilla, T. Lafarga
Summary: This study evaluates the potential use of Chlorella vulgaris for recovering nutrients from cheese whey and its impact on biomass production. The results show that Chlorella vulgaris can efficiently recover organic matter and nutrients from cheese whey, providing a sustainable alternative for the dairy industry.
JOURNAL OF APPLIED PHYCOLOGY
(2023)
Article
Energy & Fuels
Fateme Banihashemi, Amr F. M. Ibrahim, Shuguang Deng, Jerry Y. S. Lin
Summary: This study investigates the pyrolysis/gasification process of Galdieria sulphuraria and demonstrates its potential as a low-cost and sustainable energy resource for producing high-quality oil and syngas. The results show that temperature significantly affects the product yield, conversion rate, and gas composition. Catalytic gasification at low temperatures produces hydrogen-enriched syngas and high HHV bio-oil with lower oxygen and nitrogen content.
BIOENERGY RESEARCH
(2023)
Article
Chemistry, Medicinal
Annalisa Ambrosino, Annalisa Chianese, Carla Zannella, Simona Piccolella, Severina Pacifico, Rosa Giugliano, Gianluigi Franci, Antonino De Natale, Antonino Pollio, Gabriele Pinto, Anna De Filippis, Massimiliano Galdiero
Summary: In recent decades, there has been a significant increase in interest in bioactive compounds derived from natural sources. Aquatic or terrestrial organisms have the ability to produce secondary metabolites with various biological properties, such as anticancer, antioxidant, anti-inflammatory, and antimicrobial activities. This study focused on the extremophilic microalga Galdieria sulphuraria as a potential producer of bioactive compounds with antiviral activity. The algal extract showed strong antiviral activity against enveloped viruses, particularly HSV-2 and HCoV-229E, while no activity was observed against the non-enveloped poliovirus. Chemical analysis revealed the presence of primary fatty acid amides (PFAA) in the extract. These findings suggest the potential role of the algal extract as an antiviral agent and warrant further purification and exploration.
Article
Biotechnology & Applied Microbiology
Fabian Abiusi, Pedro Monino Fernandez, Stefano Canziani, Marcel Janssen, Rene H. Wijffels, Maria Barbosa
Summary: G. sulphuraria is a polyextremophilic microalga that can thrive in multiple extreme environments. Mixotrophy can enhance biomass productivity and concentration.
ALGAL RESEARCH-BIOMASS BIOFUELS AND BIOPRODUCTS
(2022)
Article
Biotechnology & Applied Microbiology
Fabian Abiusi, Egbert Trompetter, Hugo Hoenink, Rene H. Wijffels, Marcel Janssen
Summary: The study showed that Galdieria sulphuraria can be cultivated with high productivity in an environment with pH 1.7 and organic carbon, and that biomass productivity is higher in mixotrophic cultivation compared to autotrophic cultivation. Mixotrophy allows for efficient recycling of oxygen and CO2 within the cells, leading to less waste of substrate carbon.
ALGAL RESEARCH-BIOMASS BIOFUELS AND BIOPRODUCTS
(2021)
Article
Agricultural Engineering
Anne Karolin Thielemann, Sergiy Smetana, Daniel Pleissner
Summary: The study aimed to evaluate the global warming potential and resource efficiency of producing 1 kg dry algal biomass powder, finding that using hydrolyzed food waste resulted in a carbon footprint 11% higher than using conventional glucose.
BIORESOURCE TECHNOLOGY
(2021)
Review
Biotechnology & Applied Microbiology
Thomas Kiran Marella, Raya Bhattacharjya, Archana Tiwari
Summary: Diatoms are unicellular photosynthetic protists that play a vital role in marine and freshwater habitats. Despite their ability to synthesize high-value compounds, their bottleneck in commercialization is the inability to achieve high-density growth. Acquiring diverse carbon sources through various mechanisms promotes higher production of biomass, lipids, and carbohydrates.
MICROBIAL CELL FACTORIES
(2021)
Article
Biochemistry & Molecular Biology
Vit Nahlik, Vilem Zachleder, Maria Cizkova, Katerina Bisova, Anjali Singh, Dana Mezricky, Tomas Rezanka, Milada Vitova
Summary: This study investigated the cell division mechanism of the extremophilic unicellular red microalga Galdieria sulphuraria, revealing two commitment points in the cell cycle and the process of dividing into four daughter cells after nuclear division. The findings provide new insights into the cell cycle of cyanidialean red algae, with a focus on the biotechnologically important species G. sulphuraria.
Article
Green & Sustainable Science & Technology
H. M. K. Delanka-Pedige, S. P. Munasinghe-Arachchige, I. S. A. Abeysiriwardana-Arachchige, N. Nirmalakhandan
Summary: The study distills five attributes for assessing wastewater infrastructure to support sustainable cities, emphasizes the importance of wastewater infrastructure for the sustainability of cities, and suggests that the emergent STaRR system is a sustainable pathway for providing wastewater utility service to future cities.
INTERNATIONAL JOURNAL OF SUSTAINABLE DEVELOPMENT AND WORLD ECOLOGY
(2021)
Article
Engineering, Environmental
S. P. Munasinghe-Arachchige, I. S. A. Abeysiriwardana-Arachchige, H. M. K. Delanka-Pedige, P. Cooke, N. Nirmalakhandan
Summary: The study introduces a non-pressurized gas permeable membrane reactor for recovering nitrogen fertilizers from sewage. Tests demonstrate that this reactor can efficiently recover nitrogen fertilizer from wastewater under certain conditions.
CHEMICAL ENGINEERING JOURNAL
(2021)
Article
Environmental Sciences
Ashiqur Rahman, Shanglei Pan, Cymone Houston, Thinesh Selvaratnam
Summary: Produced water (PW) is the largest waste stream from the oil and gas industry, and traditional treatment methods are costly and environmentally problematic. Microalgal-based bioremediation of PW is seen as an ecologically safe and sustainable option, with nutrients in PW supporting algal growth. Galdieria sulphuraria shows higher growth potential in up to 50% PW, achieving significant nitrogen and phosphorus removal within seven days.
Article
Biotechnology & Applied Microbiology
Shanglei Pan, Kyleigh L. Dixon, Tabish Nawaz, Ashiqur Rahman, Thinesh Selvaratnam
Summary: This study found that 20% LL performed the best for the growth of Galdieria sulphuraria, with significantly higher biomass and growth rate compared to other dilutions. Addition of phosphorus increased the removal rate of ammoniacal-nitrogen, and N/P mass ratios ranging from 25:1 to 100:1 achieved almost 100% removal efficiency.
ALGAL RESEARCH-BIOMASS BIOFUELS AND BIOPRODUCTS
(2021)
Article
Biotechnology & Applied Microbiology
H. M. K. Delanka-Pedige, Y. Zhang, N. Nirmalakhandan
Summary: The study investigates the potential of reclaiming reuse-quality water through the A-WWT system with further treatment by GAC and O3, finding that ozonation followed by GAC adsorption achieved the lowest concentrations of organics and nutrients. Algal-based treatment trains outperformed CAS-based trains in terms of energy demand and recoverability. A multi-criteria evaluation ranked the A-WWT system integrated with ozonation and GAC adsorption highest among the eight treatment trains considered.
ALGAL RESEARCH-BIOMASS BIOFUELS AND BIOPRODUCTS
(2022)
Article
Biotechnology & Applied Microbiology
N. Nirmalakhandan, X. Cheng, S. P. Munasinghe-Arachchige, H. M. K. Delanka-Pedige, Y. Zhang
Summary: This study demonstrates the inactivation performance of the A-WWT system in comparison to high-rate algal ponds, activated sludge, and membrane bioreactors, showing that the A-WWT system achieves a greater log reduction per unit energy input/volume of wastewater. Additionally, the concentrations of nitrogenous DBPs in the algal effluent were found to be below 50 ng/L.
ALGAL RESEARCH-BIOMASS BIOFUELS AND BIOPRODUCTS
(2022)
Article
Environmental Sciences
Thinesh Selvaratnam, Shanglei Pan, Ashiqur Rahman, Melissa Tan, Hari Lal Kharel, Saumya Agrawal, Tabish Nawaz
Summary: This study aims to evaluate the potential of using a thermophilic acidophilic red alga, Galdieria sulphuraria, for on-site treatment of landfill leachate. The optimal conditions for biomass production were found to be 20% strength leachate, an initial biomass concentration of 0.25 g L-1, and the addition of nitrogen at twice the level of initial media. The study also showed that G. sulphuraria can grow in elevated NH4-N concentration and provide high nitrogen removal rates. The long-term experiment demonstrated the feasibility of using the algal-based system for bioremediation in a semi-continuous mode.
Article
Biotechnology & Applied Microbiology
Alina A. Corcoran, Juliette Ohan, Erik R. Hanschen, Anthony Granite, Heather Martinez, F. O. Holguin, Blake T. Hovde, Shawn R. Starkenburg
Summary: Although bacterial amendments can enhance algal productivity and stability, their commercial-scale utilization is limited. The results of experiments showed that the effects of environmental factors and bacterial amendments on algae cultivation are complex, and the positive effects of bacterial amendments were not significant in field experiments. Future research should focus on understanding the relationship between bacteria and algal partners and developing synthetic ecological approaches for designing and testing consortia.
ALGAL RESEARCH-BIOMASS BIOFUELS AND BIOPRODUCTS
(2022)
Article
Horticulture
Govinda Sapkota, Efren Delgado, Dawn VanLeeuwen, F. Omar Holguin, Nancy Flores, Robert Heyduck, Shengrui Yao
Summary: In this study, nutrient dynamics during fruit maturation of different jujube cultivars were examined. The results showed that moisture, total phenolic content, proanthocyanidins, antioxidant capacity, and vitamin C content decreased with fruit maturity, while cAMP increased in the later stage of fruit maturity. Creamy fruit had higher concentrations of TPC, PAs, FRAP, and vitamin C compared to fully red mature fruit.
Article
Multidisciplinary Sciences
Hailey A. Luker, Keyla R. Salas, Delaram Esmaeili, F. Omar Holguin, Harley Bendzus-Mendoza, Immo A. Hansen
Summary: Cases of mosquito- and tick-borne diseases are increasing worldwide. In this study, we tested the contact repellent efficacy of 20 active ingredients from the EPA's Minimum Risk Pesticides list against Aedes aegypti and Ixodes scapularis. We found that 10% v/v lotion emulsions with clove oil or cinnamon oil provided the longest protection from mosquito bites and tick crossings.
SCIENTIFIC REPORTS
(2023)
Article
Biochemistry & Molecular Biology
Dennis N. Lozada, Sahithi Reddy Pulicherla, Francisco Omar Holguin
Summary: This study conducted a metabolomics analysis of jalapeno ('NuMex Pumpkin Spice') and serrano ('NuMex LotaLutein') type chile peppers grown in New Mexico. A total of 1088 different metabolites were detected, and 345 metabolites showed significant differences in expression between the two types of peppers. Principal component analysis and orthogonal partial least squares demonstrated clustering of the peppers based on cultivars. Pathway annotation revealed 89 metabolites involved in metabolic pathways and the biosynthesis of secondary metabolites. Overall, metabolomics analysis provided valuable insights for improving the nutritional quality traits of Capsicum.
Article
Plant Sciences
Govinda Sapkota, Efren Delgado, Dawn VanLeeuwen, F. Omar Holguin, Nancy Flores, Shengrui Yao
Summary: We studied the effects of different drying methods on the nutrition preservation of jujube fruits and found that freeze-drying had the best results. Natural sun drying and oven drying caused loss of flavonoids, vitamin C, and antioxidant activities, and higher drying temperatures further decreased the nutritional value of jujube fruits.
Review
Biotechnology & Applied Microbiology
Hari Lal Kharel, Ina Shrestha, Melissa Tan, Mohammad Nikookar, Negar Saraei, Thinesh Selvaratnam
Summary: With the increasing urbanization and development activities, the consumption of heavy metals has been rising globally. It is necessary to treat heavy metals before releasing them into the environment due to their potential hazards. Microalgal-based heavy metal removal has been considered as a more effective, environment-friendly, and inexpensive method compared to conventional treatment technologies. Cyanidiales, a type of red algae, have been identified as having the potential for heavy metal remediation due to their ability to tolerate extreme stresses and survive in acidic mine drainage. This review focuses on the algal species belonging to Cyanidiales and their efficiency in heavy metal removal.
Meeting Abstract
Horticulture
Govinda Sapkota, Shengrui Yao, Omar Holguin, Efren Delgado, Nancy Flores, Robert Heyduck
Article
Engineering, Environmental
I. S. A. Abeysiriwardana-Arachchige, H. M. K. Delanka-Pedige, S. P. Munasinghe-Arachchige, C. E. Brewer, N. Nirmalakhandan
Summary: This paper presents the modeling and optimization of an algal-based sewage treatment and resource recovery system. The specific models for each subprocess have been developed and integrated to optimize the system based on operating cost and profit. The optimized system achieved significant cost reduction and high efficiency in phosphorus and nitrogen recovery.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2022)
Article
Biotechnology & Applied Microbiology
Sung-Yeoul Kim, Vikash Chandra Roy, Jin-Seok Park, Byung-Soo Chun
Summary: This study aims to extract functional substances from Undaria pinnatiida sporophyll using supercritical carbon dioxide (SC-CO2) and subcritical water extraction (SWE). The results showed that the consecutive green extraction method can yield extracts rich in fucoxanthin and beta-carotene, and the sporophyll of Undaria pinnatiida contains health-beneficial fatty acids. Additionally, SWE can extract substances with antioxidant, antibacterial, and antihypertensive activities.
ALGAL RESEARCH-BIOMASS BIOFUELS AND BIOPRODUCTS
(2024)
