Article
Thermodynamics
Arif Rahman, Juno Dwi Putra, Nining Betawati Prihantini, T. M. Mahlia, M. Aziz, Deendarlianto, N. Nasruddin
Summary: The study showed that a baffle can significantly enhance the growth of Synechococcus HS-9 in the photobioreactor, leading to an increased biofuel yield. Bubble size, distribution, and velocity in the photobioreactor are influenced by the baffle, affecting mass transfer processes and the growth of Synechococcus HS-9.
CASE STUDIES IN THERMAL ENGINEERING
(2021)
Article
Biotechnology & Applied Microbiology
Jack Hoeniges, William Welch, Jeremy Pruvost, Laurent Pilon
Summary: The use of external mirrors can increase the solar flux and biomass productivity in outdoor raceway ponds for microalgae cultivation. Configuration C, with a single north mirror, is considered to be the simplest and most cost-effective method to increase raceway productivity, with a potential yield increase of up to 73% in the winter months.
ALGAL RESEARCH-BIOMASS BIOFUELS AND BIOPRODUCTS
(2022)
Article
Biotechnology & Applied Microbiology
Jakob Walther, Niklas Erdmann, Michael Stoffel, Katharina Wastian, Anna Schwarz, Dorina Strieth, Kai Muffler, Roland Ulber
Summary: In this study, it was found that cultivating the cyanobacterium Nostoc sp. as a biofilm can enhance its antibacterial activity. A new photobioreactor system with carriers was developed, allowing large-scale cultivation and improving gas exchange efficiency. However, it also led to an increased mixing time.
BIOTECHNOLOGY AND BIOENGINEERING
(2022)
Article
Agricultural Engineering
Sagar Devadiga, Rahul Tiwari, Sashi Sonkar, Nirupama Mallick
Summary: Modeling plays a significant role in large-scale microalgae cultivation for predicting and improving biomass generation. A kinetic model was proposed to accurately predict biomass concentration based on specific growth rates. The model exhibited high prediction efficiency in experimental data validation and is recommended for forecasting microalgal biomass production.
BIOMASS & BIOENERGY
(2023)
Article
Environmental Sciences
Kyung Jin Min, Doo Young Oh, Ki Young Park
Summary: The study demonstrated that cultivating water-net algae using wastewater and underwater light device can achieve high yield and productivity under specific light and harvesting conditions. Periodic harvesting can reduce nutrient concentration in the effluent but also decrease algae productivity.
Article
Energy & Fuels
Nguyen Thuy Lan Chi, Thangavel Mathimani, S. Manigandan, Sabarathinam Shanmugam, Nguyen Thi Ha, Tran Cam Nhung, Sulaiman Ali Alharbi, Arunachalam Chinnathambi, Kathirvel Brindhadevi, Usawadee Chanasut, Kanda Whangchai
Summary: Microalgae are a promising feedstock for sustainable biodiesel production. This study investigated the cultivation and harvesting of Chlorella sp. using different cultivation systems, and found that photobioreactors can enhance biomass growth and productivity. The lipid content of Chlorella sp. was similar regardless of the cultivation system tested.
Article
Engineering, Environmental
Georgios Samiotis, Kostas Stamatakis, Elisavet Amanatidou
Summary: The present study focuses on the dimensioning of a cultivation photobioreactor for wastewater treatment and biomass-derived added value products. The results show that under limited lighting conditions, the photobioreactor can achieve a similar volume compared to an activated sludge reactor, regardless of the wastewater salinity.
CHEMICAL ENGINEERING JOURNAL
(2022)
Article
Food Science & Technology
Silvia Villaro, Ainoa Morillas-Espana, Gabriel Acien, Tomas Lafarga
Summary: The present study aimed to maximize the productivity of Arthrospira platensis BEA005B (Spirulina) by identifying the optimal combination of dilution rate and depth of the culture in raceway reactors. The optimal combination was determined to be a depth of 0.10 m and a dilution rate of 0.33 day(-1), resulting in a biomass productivity of 30.2 g.m(-2.)day(-1) on a dry weight basis. The composition of the produced biomass was found to be rich in proteins and had potential functional properties for the development of innovative and sustainable foods.
Article
Biology
Dorina Strieth, Andreas Weber, Johannes Robert, Judith Stiefelmaier, Jonas Kollmen, Marianne Volkmar, Michael Lakatos, Volkmar Jordan, Kai Muffler, Roland Ulber
Summary: Aerosol-based photobioreactor was developed for cultivating phototrophic biofilms, resulting in higher productivity. Experiments and simulation showed that cultivation surface had no influence on biomass production but affected biofilm thickness.
Article
Biotechnology & Applied Microbiology
Rahul Tiwari, Sagar Devadiga, Nirupama Mallick
Summary: This study developed a prediction model for biomass yield in open raceway ponds by integrating PCA and PLS regression. The results showed a strong correlation between solar intensity and temperature parameters, accounting for 91% of the variability in the biomass yield. The PLS model demonstrated a predicted R2 value of 0.91 and significant prediction efficiency up to 97% for outdoor conditions.
BIOCHEMICAL ENGINEERING JOURNAL
(2023)
Article
Automation & Control Systems
Igor M. L. Pataro, Juan D. Gil, Jose L. Guzman, Manuel Berenguel, Joao M. Lemos
Summary: This article presents a study on the pH control of raceway photobioreactors (PBRs) using a learning-based model predictive control (LBMPC) approach. The LBMPC demonstrates satisfactory results and outperforms the conventional nominal MPC strategy, achieving up to four times superior performance in terms of the average error index. The results highlight the importance of employing robust adaptive control strategies for highly nonlinear and multi-disturbed systems like the variant biological-chemical microalgae process in PBRs.
CONTROL ENGINEERING PRACTICE
(2023)
Article
Agricultural Engineering
Amit Kumar Sharma, Abhishek Sharma, Yashvir Singh, Wei-Hsin Chen
Summary: In this study, Chlorella minutissima microalgae were cultivated in a 1500 L open pond using commercial fertilizer, with a high lipid content biomass extracted using the soxhlet method. Response Surface Methodology was employed to optimize transesterification parameters for biodiesel production, with all fuel properties meeting standard specifications except for oxidation stability, which was improved with the addition of an appropriate antioxidant.
BIOMASS & BIOENERGY
(2021)
Article
Engineering, Environmental
Thomas Igou, Shifa Zhong, Elliot Reid, Yongsheng Chen
Summary: This study presents a novel image-based deep learning method for predicting productivity in outdoor open raceway pond (ORP) cultivation. The model demonstrated superior performance compared to traditional machine learning methods and can effectively predict microalgal productivity from remote monitoring data, providing an inexpensive tool for microalgal production and operational forecasting.
ENVIRONMENTAL SCIENCE & TECHNOLOGY
(2023)
Article
Biotechnology & Applied Microbiology
Valerie L. Harmon, Ed Wolfrum, Eric P. Knoshaug, Ryan Davis, Lieve M. L. Laurens, Philip T. Pienkos, John McGowen
Summary: This study introduces a set of standard metrics for describing the reliability of algae cultivation systems, providing a basis for quantifying pond failures and offering insights into pond management and contaminant mitigation strategies based on measured experimental values.
ALGAL RESEARCH-BIOMASS BIOFUELS AND BIOPRODUCTS
(2021)
Article
Engineering, Aerospace
Alessandro Concas, Giacomo Fais, Marco Enna, Susanna Zucchelli, Pierluigi Caboni, Nicola Lai, Alberto Cincotti, Giacomo Cao
Summary: Investigating the possibility of cultivating cyanobacterium Synechococcus nidulans in a medium made of simulated regolith leachate and astronauts' urine, called Martian Medium, was done to reduce nutrient payload from Earth. The strain could grow with a biomass productivity of 29 g m-3 day-1 in a medium containing 40% v/v of Martian Medium and urine, with no significant changes in its composition. The produced biomass demonstrated antioxidant power and a high content of carotenoids, making it a potential food for astronauts.
Review
Nutrition & Dietetics
Annabel Biruete, Kathleen M. Hill Gallant, Stephen R. Lindemann, Gretchen N. Wiese, Neal X. Chen, Sharon M. Moe
JOURNAL OF RENAL NUTRITION
(2020)
Review
Nutrition & Dietetics
Gretchen N. Wiese, Annabel Biruete, Ranjani N. Moorthi, Sharon M. Moe, Stephen R. Lindemann, Kathleen M. Hill Gallant
Summary: High circulating TMAO is associated with increased risk of cardiovascular disease and mortality in CKD patients. Plant-based diets may help reduce TMAO production, but further clinical studies are needed to verify their efficacy.
JOURNAL OF RENAL NUTRITION
(2021)
Article
Biochemistry & Molecular Biology
Michael T. Madigan, Megan L. Kempher, Kelly S. Bender, Deborah O. Jung, W. Matthew Sattley, Stephen R. Lindemann, Allan E. Konopka, Alice C. Dohnalkova, James K. Fredrickson
Summary: Hot Lake is a unique heliothermal and hypersaline lake in Washington State, USA, with MgSO4 as the dominant salt rather than NaCl. Research has shown that green sulfur bacteria in the lake are able to grow in high temperatures, potentially providing dissolved organic matter and bioavailable nitrogen to the lake.
CANADIAN JOURNAL OF MICROBIOLOGY
(2021)
Article
Nutrition & Dietetics
Arianna D. Romero Marcia, Tianming Yao, Ming-Hsu Chen, Renee E. Oles, Stephen R. Lindemann
Summary: Increased dietary fiber consumption can enhance human gut microbial diversity, with differences in carbohydrate linkage structure governing compositional and functional responses of microbiota independently of sugar composition. Despite individual metabolic outputs from identical glucans, certain operational taxonomic units (OTUs) show similar growth responses across individuals' microbiota, indicating efficient competition for specific structures by certain taxa.
Article
Microbiology
Chengdong Xu, Sneha P. Couvillion, Ryan L. Sontag, Nancy G. Isern, Yukari Maezato, Stephen R. Lindemann, Taniya Roy Chowdhury, Rui Zhao, Beau R. Morton, Rosalie K. Chu, Ronald J. Moore, Janet K. Jansson, Vanessa L. Bailey, Paula J. Mouser, Margaret F. Romine, James F. Fredrickson, Thomas O. Metz
Summary: MetFish is a method for analyzing metabolites and chemicals in hypersaline samples, allowing for direct LC-MS-based exometabolomics analysis. It provides high sensitivity and accuracy, with low limits of quantification, broad linear dynamic ranges, and low interday reproducibility. The method has been successfully applied in various microbial community analyses, demonstrating its versatility and reliability for metabolomics in high-salt environments.
Article
Chemistry, Applied
Sainan Zhao, Bruce S. Dien, Stephen R. Lindemann, Ming-Hsu Chen
Summary: Autohydrolysis is used to produce xylan-derived oligosaccharides from lignocellulosic biomass. Studies show that optimizing autohydrolysis conditions for different plants can affect the structural properties and impact on intestinal bacterial communities. In vitro fermentation of beechwood xylan (BWX)-derived substrates processed under different conditions produced varying fermentation kinetics and impacted community species evenness. This suggests that autohydrolysis parameters can influence the beneficial effects of xylan-derived fibers on human gut microbiota.
CARBOHYDRATE POLYMERS
(2021)
Article
Multidisciplinary Sciences
Severine P. Parois, Susan D. Eicher, Stephen R. Lindemann, Jeremy N. Marchant
Summary: Recent study investigated the effects of a synbiotic supplement on behavior and memory in piglets. Results showed that piglets supplemented with synbiotic performed better in memory tests and exhibited differences in microbiota composition. This suggests a potential link between gut microbiota and memory abilities.
SCIENTIFIC REPORTS
(2021)
Editorial Material
Microbiology
Hyun-Seob Song, Stephen R. Lindemann, Dong-Yup Lee
FRONTIERS IN MICROBIOLOGY
(2021)
Article
Microbiology
Anam Nasir, Waqar Ahmad, Fazal Sattar, Iram Ashfaq, Stephen R. Lindemann, Ming-Hsu Chen, Wim Van den Ende, Ebru Toksoy Oner, Onur Kirtel, Shazia Khaliq, Muhammad A. Ghauri, Munir A. Anwar
Summary: A new Gram-positive bacterium, Bacillus paralicheniformis LB1-1A, producing a levan with low branching and high molecular weight, was isolated from the rhizosphere of Buffalo grass, making it a promising candidate for industrial applications.
ANTONIE VAN LEEUWENHOEK INTERNATIONAL JOURNAL OF GENERAL AND MOLECULAR MICROBIOLOGY
(2022)
Review
Nutrition & Dietetics
Yu Wang, Cassi N. Uffelman, Robert E. Bergia, Caroline M. Clark, Jason B. Reed, Tzu-Wen L. Cross, Stephen R. Lindemann, Minghua Tang, Wayne W. Campbell
Summary: Emerging research indicates the importance of gut microbiota in mediating the relationship between meat intake and human health outcomes. This study aimed to assess the available scientific literature on this topic and found that meat intake has differential effects on gut microbiota composition, but the patterns of microbial responses vary across studies. More well-designed prospective studies and full-feeding RCTs are needed to further investigate the relationships and effects of consuming different meat subtypes on gut microbiota.
ADVANCES IN NUTRITION
(2023)
Article
Biochemistry & Molecular Biology
Elanur Dastan, Omer F. Celik, Orhan Bas, Zafer Bulut, Stephen R. Lindemann, Mehmet I. Tugay, Muhammet Degermenci, Beyza Suvarikli-Alan, Mehmet Nizamlioglu, Yunus E. Tuncil
Summary: This study investigated the impact of hazelnut dietary fiber on colonic microbiota composition and short-chain fatty acids. The results showed that hazelnut dietary fiber increased the relative abundances of beneficial bacteria and stimulated the production of beneficial microbial metabolites. Additionally, hazelnut skin was found to have potential for producing functional dietary fiber targeting colonic health.
Proceedings Paper
Automation & Control Systems
Poonam Phalak, Hans C. Bernstein, Stephen R. Lindemann, Ryan S. Renslow, Dennis G. Thomas, Michael A. Henson, Hyun-Seob Song
Summary: Autotroph-heterotroph interactions are common in natural environments and play a crucial role in ecosystem functions. This study developed metabolic network models for two autotroph-heterotroph biofilm consortia and analyzed microbial interactions under varying environmental variables.
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)
