Article
Agronomy
Zahra Gheshlaghi, Reza Khorassani, Javier Abadia
Summary: This study demonstrates that the application of Fe mining sub-products, thiols and the combination of Fe(III)-EDDHA and thiols can alleviate moderate Fe deficiency in soybean grown in a calcareous soil.
Article
Biochemical Research Methods
R. Merry, M. J. Espina, A. J. Lorenz, R. M. Stupar
Summary: An assay was developed to assess factors leading to IDC in soybean. Calcium carbonates have a greater influence on IDC symptoms than pH. Nodulation improved resistance to IDC. The developed assay is highly sensitive and can detect slight differences in IDC resistance.
Article
Biochemistry & Molecular Biology
Daniel R. Kohlhase, Chantal E. McCabe, Asheesh K. Singh, Jamie A. O'Rourke, Michelle A. Graham
Summary: Iron deficiency chlorosis is a stress that negatively impacts soybean production, with differences in stress response between model and crop species. Gene expression studies revealed rapid response to iron deficiency in diverse soybean genotypes, suggesting untapped genetic potential for improving iron efficiency in soybean.
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
(2021)
Article
Environmental Sciences
Nuria Lopez-Vinent, Alberto Cruz-Alcalde, Claudia Lai, Jaime Gimenez, Santiago Esplugas, Carme Sans
Summary: This study investigated the role of sunlight and oxygen in the photo-Fenton process at near neutral pH using five organic fertilizers as iron complexes. The results showed that different iron chelates have different UV absorbance and stability constants, which affect the reaction mechanisms in SMX degradation. The proposed complementary reaction mechanisms involve potential photoexcitation of the iron complex and subsequent oxygen-mediated hydroxyl radical generation reactions.
SCIENCE OF THE TOTAL ENVIRONMENT
(2022)
Review
Agronomy
Ryan Merry, Austin A. Dobbels, Walid Sadok, Seth Naeve, Robert M. Stupar, Aaron J. Lorenz
Summary: This review investigates the research achievements in the areas of phenotyping, genetics, and physiology of iron deficiency in soybean. It reveals connections between these areas and facilitates further discoveries. These studies are crucial for our understanding of iron deficiency physiology and bridging the gap between iron deficiency chlorosis (IDC) resistance and plant responses to iron stress.
Article
Agronomy
Zhanyou Xu, Steven B. Cannon, William D. Beavis
Summary: This study evaluates methods for spatial adjustment of ordinal data, using soybean iron deficiency chlorosis (IDC) as an example, and finds that geospatial autoregressive regression models perform the best for this type of ordinal data.
Article
Construction & Building Technology
Kangning Liu, Sheliang Wang, Xiaoyi Quan, Jing Wu, Jin Xu, Nan Zhao, Bo Liu
Summary: Iron ore tailings (IOTs) were used as aggregates to prepare iron-ore-tailing-engineered cementitious composites (IOT-ECCs) for clean production. The mechanical properties, pore structure, and resistance to sulfate freeze-thaw (F-T) of IOT-ECCs were studied. The optimal IOT replacement ratio was found to be 40%, and the IOT-ECC with 40% IOTs exhibited the best mechanical properties and sulfate F-T resistance. The pore structure and compactness of the IOT-ECC matrix deteriorated with increasing F-T cycles. These research results will promote the application of IOTs in ECCs.
Article
Plant Sciences
Manhong Sun, Senyu Chen, James E. Kurle
Summary: Nutritional deficiency, especially iron deficiency, and soybean cyst nematode can negatively affect soybean yield. This study examined the interactive effects of arbuscular mycorrhizal fungi (MF), soybean cyst nematode (SCN), and soil pH on soybean growth. The results showed that SCN reduced leaf chlorophyll content (LCC), especially in high-pH soil. MF increased LCC in low-pH soil and high-pH soil without SCN, but reduced LCC in high-SCN and high-pH soil conditions. SCN and MF also affected soybean shoot weight, with MF increasing shoot weight in certain pH conditions. Overall, this study highlights the importance of considering the interactions between SCN, MF, and soil pH in managing soybean growth.
PHYTOBIOMES JOURNAL
(2022)
Proceedings Paper
Agricultural Engineering
C. Potnuru, B. Narayanan, L. Ries, B. Floyd, N. Hausmann
Summary: In this study, an automatic scoring system using machine learning techniques and images collected by drones was proposed for quantifying iron chlorosis severity in soybean, showing good correlation and heritability/repeatability compared to manual scoring. This approach reduces labor-intensive and expensive manual data collection efforts, providing an efficient tool for breeding practices.
REMOTE SENSING FOR AGRICULTURE, ECOSYSTEMS, AND HYDROLOGY XXIII
(2021)
Review
Energy & Fuels
Ana Sofia Oliveira, Carlos Ferreira, Joana Odila Pereira, Manuela E. Pintado, Ana P. Carvalho
Summary: Saccharomyces cerevisiae extracts, as food supplements, have been commercialized for years due to their high protein content and various biological properties. Ongoing studies focus on valorizing S. cerevisiae to create novel products and improve production processes.
BIOMASS CONVERSION AND BIOREFINERY
(2022)
Article
Environmental Sciences
Jeroen Bauwens, Luciana S. Rocha, Helena M. V. M. Soares
Summary: Petroleum spent catalysts may contain a significant amount of palladium (Pd), which is highly valuable and scarce. This study assessed the ability of a strong basic anionic resin to remove Pd from solution, and found that the resin showed high selectivity and good adsorption performance for Pd.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2022)
Article
Engineering, Chemical
Carlos Ferreira, Carla F. Pereira, Ana Sofia Oliveira, Margarida Faustino, Ana M. Pereira, Joana Durao, Joana Odila Pereira, Manuela E. Pintado, Ana P. Carvalho
Summary: This study investigated the effects of protein and iron concentration on the production yield of iron-peptide complexes from spent Saccharomyces cerevisiae. The results showed that higher concentrations led to lower complexation yield. Fluorescence analysis and Fourier transform infrared spectroscopy (FT-IR) confirmed this finding. Further optimization of the process is needed.
Article
Food Science & Technology
Ana Sofia Oliveira, Joana Odila Pereira, Carlos Ferreira, Margarida Faustino, Joana Durao, Manuela E. Pintado, Ana P. Carvalho
Summary: This study presents a scalable and low-cost method to obtain yeast peptide extracts in a circular economy concept. The extracts showed bioactive properties such as antihypertensive, antioxidant, and cholesterol-lowering activities, making them suitable candidates for dietary supplementation and functional foods.
INNOVATIVE FOOD SCIENCE & EMERGING TECHNOLOGIES
(2022)
Editorial Material
Plant Sciences
Eduardo V. Soares, Spyridon A. Petropoulos, Helena M. V. M. Soares
FRONTIERS IN PLANT SCIENCE
(2022)
Article
Biotechnology & Applied Microbiology
Manuela D. Machado, Eduardo Soares
Summary: This study characterizes the physiology of the green alga Pseudokirchneriella subcapitata during aging. Young algal cells exhibit high photosynthetic activity and starch content, while aging cells experience chloroplast shrinkage, decline in chlorophylls and photosynthetic capacity, as well as degradation of starch. These findings are important for exploring the potential of Pseudokirchneriella subcapitata in toxicity studies or biotechnological applications.
APPLIED MICROBIOLOGY AND BIOTECHNOLOGY
(2022)
Article
Plant Sciences
Aron Barbosa Oliveira, Guilherme Medeiros Antar, Marcelo Trovo
Summary: This study identifies and resolves nomenclatural issues in the Menthinae group, proposing new types and re-evaluating synonyms. It contributes to the taxonomic and nomenclatural knowledge of the group, providing a solid foundation for future research on its taxonomy, biogeography, and evolution.
Article
Biochemistry & Molecular Biology
Eduardo M. Costa, Ana Sofia Oliveira, Sara Silva, Alessandra B. Ribeiro, Carla F. Pereira, Carlos Ferreira, Francisca Casanova, Joana O. Pereira, Ricardo Freixo, Manuela E. Pintado, Ana Paula Carvalho, Oscar L. Ramos
Summary: Spent yeast waste streams are a rich secondary source of bioactive compounds, such as phenolic compounds and peptides, which have potential applications in skin-related products. This study investigated peptide fractions extracted from fermentation engineered spent yeast waste and their effects on skin metabolites. The results showed that the peptide fractions were not cytotoxic and had a positive effect on the production of various skin metabolites. The overall best performance was observed at a concentration of 100 mu g/mL. These findings suggest that the peptide fractions have potential for future use in skin care formulations.
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
(2023)
Article
Biotechnology & Applied Microbiology
Ana Lopes, Joao Azevedo-Silva, Erdem Carsanba, Manuela Pintado, Ana Sofia Oliveira, Carlos Ferreira, Joana Odila Pereira, Ana P. Carvalho, Carla Oliveira
Summary: This study explored the use of an antioxidant peptide extract obtained from industrial spent yeast as a supplement for Saccharomyces cerevisiae fermentation to prevent oxidative stress. The results showed that the peptide extract improved cell growth, reduced reactive oxygen species production, and increased fermentation performance.
APPLIED MICROBIOLOGY AND BIOTECHNOLOGY
(2023)
Article
Biotechnology & Applied Microbiology
Ana Sofia Oliveira, Carlos M. H. Ferreira, Joana Odila Pereira, Margarida Faustino, Joana Durao, Ana Margarida Pereira, Manuela E. Pintado, Ana P. Carvalho
Summary: This study focused on evaluating the potential of peptide-rich waste streams from β-glucan and mannan production from spent yeast as iron-peptide complexes for iron supplementation. The waste streams were treated with ultrafiltration and their ability to complex iron was assessed. The results showed that Gpep > 1 kDa fraction had the best capacity for iron complexation at pH 6.0 and a time of 30 min. The iron-peptide complex was characterized using various techniques. The results suggest that Gpep and Mpep waste streams have potential as iron supplementation in the form of iron-peptide complexes.
FOOD AND BIOPRODUCTS PROCESSING
(2023)
Article
Chemistry, Applied
Margarida Faustino, Carla F. Pereira, Joana Dura, Ana Sofia Oliveira, Joana Odila Pereira, Carlos Ferreira, Manuela E. Pintado, Ana P. Carvalho
Summary: This study evaluates the impact of freeze drying and spray drying on the structural, physicochemical, and biological properties of mannans from Saccharomyces cerevisiae. Structural analysis was conducted using FT-IR, PXRD, and SEM, while physicochemical properties were assessed based on sugars, protein, ash and water contents, solubility, and molecular weight distribution. Thermal behavior was analyzed using DSC, and antioxidant activity was measured using DPPH and ABTS assays.
Article
Agriculture, Multidisciplinary
Sandra Lopez-Rayo, Silvia Valverde, Juan Joseï Lucena
Summary: This study investigates the capacity of [S,S]-EDDS to solubilize micronutrients from agronomic soils and enhance plant nutrition. The results show that [S,S]-EDDS has a high capacity to solubilize iron and other micronutrients, with the best results observed in sandy-clay soils with low iron content, typical of Mediterranean areas. The study supports the direct application of the ligand to soils and the possible use of ligand-producing bacteria in biotechnology applications.
JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY
(2023)
Article
Marine & Freshwater Biology
Manuela D. Machado, Eduardo Soares
Summary: This study focuses on the formation of palmelloid-like phenotype in the freshwater alga Raphidocelis subcapitata exposed to adverse conditions generated by organic or inorganic pollutants. The results indicate that the formation of palmelloid-like phenotype is dependent on the type, concentration, and exposure time of the pollutants, and the phenotype can be reversed when transferred to a pollutant-free medium.
AQUATIC TOXICOLOGY
(2023)
Article
Microbiology
Margarida Faustino, Sara Silva, Eduardo M. Costa, Ana Margarida Pereira, Joana Odila Pereira, Ana Sofia Oliveira, Carlos M. H. Ferreira, Carla F. Pereira, Joana Durao, Manuela E. Pintado, Ana P. Carvalho
Summary: Urinary tract infections (UTIs) caused by uropathogenic Escherichia coli remain a common public health problem. Long-acting prophylactic antibiotics are commonly used in the treatment of chronic UTIs, but they contribute to the development of antibiotic-resistant strains. D-mannose and mannose oligosaccharides (MOS) have the potential to serve as alternatives to antibiotic prophylaxis due to their ability to inhibit bacterial adhesion and infection. However, research on the effect of MOS in UTIs is limited. Preliminary results suggest that MOS extracts have the potential to be used in UTIs management by competitively inhibiting bacterial adhesion through mannose action.
