The role of the Flb protein family in the life cycle of Aspergillus niger
Antonie Van Leeuwenhoek. 2024 Mar 19;117(1):58. doi: 10.1007/s10482-024-01957-x.ABSTRACTGenes flbA-E are involved in sporulation and vegetative growth in Aspergillus nidulans. Inactivation of either of these genes results in a fluffy phenotype with delayed or even abolished sporulation. Previously, a non-sporulating phenotype was obtained by inactivating flbA in Aspergillus niger, which was accompanied by lysis, thinner cell walls, and an increased secretome complexity. Here, we further studied the role of the flb genes of A. niger. Strains ΔflbA, ΔflbB and ΔflbE showed increased biomass formation, while inactivation of...
Source: Antonie van Leeuwenhoek - March 19, 2024 Category: Microbiology Authors: Xiaoyi Chen Juan P Moran Torres Han A B W östen Source Type: research
The role of the Flb protein family in the life cycle of Aspergillus niger
Antonie Van Leeuwenhoek. 2024 Mar 19;117(1):58. doi: 10.1007/s10482-024-01957-x.ABSTRACTGenes flbA-E are involved in sporulation and vegetative growth in Aspergillus nidulans. Inactivation of either of these genes results in a fluffy phenotype with delayed or even abolished sporulation. Previously, a non-sporulating phenotype was obtained by inactivating flbA in Aspergillus niger, which was accompanied by lysis, thinner cell walls, and an increased secretome complexity. Here, we further studied the role of the flb genes of A. niger. Strains ΔflbA, ΔflbB and ΔflbE showed increased biomass formation, while inactivation of...
Source: Antonie van Leeuwenhoek - March 19, 2024 Category: Microbiology Authors: Xiaoyi Chen Juan P Moran Torres Han A B W östen Source Type: research
Ruminal degradation characteristics of bagasse with different fermentation treatments in the rumen of beef cattle
AbstractThis experiment aimed to study the degradation characteristics of bagasse after three fermentation treatments in beef cattle. Bagasse 1 was treated with 0.3% lactic acid bacteria (w/w). Bagasse 2 was treated with 0.3% mixed strains (Saccharomyces cerevisiae,Aspergillus niger,Aspergillus oryzae, and lactic acid bacteria at 2:1:1:1). Bagasse 3 was treated with 0.1% cellulase and 0.1% xylanase in addition to 0.3% mixed strains of bagasse 2. The dry matter (DM), crude ash (ASH), crude protein (CP), neutral detergent fiber (NDF), and acid detergent fiber (ADF) in the bagasses were determined. Compared to the control bag...
Source: Animal Science Journal - March 19, 2024 Category: Zoology Authors: Anqiang Lai,
Yanru Huang,
Haocen Luo,
Yadong Jin,
Langzhou Wang,
Binlong Chen,
Kaimei Deng,
Wenming Huang,
Yi Zhang Tags: RESEARCH ARTICLE Source Type: research
Molecules, Vol. 29, Pages 1365: Study on the Properties of FEVE Modified with Ag2O/OH-MWCNTS Nanocomposites for Use as Adhesives for Wooden Heritage Objects
In this study, a FEVE resin was modified with Ag2O/OH-MWCNTS (MA), denoted as MAF, where three concentrations were prepared using in situ precipitation, and the resulting composite adhesive was characterized by a high viscosity and effective bacteriostatic properties, demonstrating a better viscosity and thermal stability, as well as antibacterial properties, than pure FEVE resin. The results show that MAF adhesives present good thermal stability, as evidenced by a lower mass loss rate following treatment at 800 °C compared to the pure FEVE resin. At a consistent shear rate, the viscosity of MAF demonstrates a ...
Source: Molecules - March 19, 2024 Category: Chemistry Authors: Gele Teri Cong Cheng Kezhu Han Dan Huang Jing Li Yujia Luo Peng Fu Yuhu Li Tags: Article Source Type: research
Expression of cellobiose dehydrogenase gene in Aspergillus niger C112 and its effect on lignocellulose degrading enzymes
Cellobiose dehydrogenase (CDH) is one of the cellulase auxiliary proteins, which is widely used in the field of biomass degradation. However, how to efficiently and cheaply apply it in industrial production still needs further research. Aspergillus niger C112 is a significant producer of cellulase and has a relatively complete lignocellulose degradation system, but its CDH activity was only 3.92 U. To obtain a recombinant strain of A. niger C112 with high cellulases activity, the CDH from the readily available white-rot fungus Grifola frondose had been heterologously expressed in A. niger C112, under the control of the g...
Source: Frontiers in Microbiology - March 18, 2024 Category: Microbiology Source Type: research
Aristolochia bracteolata flower extract based phytosynthesis and characterization of AgNPs: Antimicrobial, antidiabetic, and antioxidant activities potential assessment
Environ Res. 2024 Mar 14:118729. doi: 10.1016/j.envres.2024.118729. Online ahead of print.ABSTRACTThe study was carried out to evaluate the effectiveness of the Aristolochia bracteolata water flower extract-mediated AgNPs synthesis and assess their antimicrobial potential. According to the experimental and analytical results, A. bracteolata flower extract can produce valuable AgNPs. The characteristic features of these AgNPs were assessed with UV-visible spectrophotometer, Fourier transform-infrared spectroscopy, Transmission Electron Microscope, Scanning Electron Microscopy, as well as. Under UV-vis. spectrum results, sho...
Source: Environmental Research - March 16, 2024 Category: Environmental Health Authors: Anh-Tuan Le Hai-Anh Ha Mysoon Al-Ansari Kasber Elankathirselvan Latifah A Al-Humaid Source Type: research
Aristolochia bracteolata flower extract based phytosynthesis and characterization of AgNPs: Antimicrobial, antidiabetic, and antioxidant activities potential assessment
Environ Res. 2024 Mar 14:118729. doi: 10.1016/j.envres.2024.118729. Online ahead of print.ABSTRACTThe study was carried out to evaluate the effectiveness of the Aristolochia bracteolata water flower extract-mediated AgNPs synthesis and assess their antimicrobial potential. According to the experimental and analytical results, A. bracteolata flower extract can produce valuable AgNPs. The characteristic features of these AgNPs were assessed with UV-visible spectrophotometer, Fourier transform-infrared spectroscopy, Transmission Electron Microscope, Scanning Electron Microscopy, as well as. Under UV-vis. spectrum results, sho...
Source: Environmental Research - March 16, 2024 Category: Environmental Health Authors: Anh-Tuan Le Hai-Anh Ha Mysoon Al-Ansari Kasber Elankathirselvan Latifah A Al-Humaid Source Type: research
Socio-economic baseline for oil-impacted communities in Ogoniland: towards a restoration framework in Niger Delta, Nigeria
This study documents the socio-economic baselines in selected oil-impacted communities prior to the commencement of the Ogoni clean-up and restoration project. Adopting mixed approach consisting of semi-structured interviews, focus group discussions (FGDs), key informant interviews (KIIs), and household surveys, we surveyed the pre-remediation socio-economic conditions in the Ogoniland communities between July 2018 and March 2019. Results indicated that almost all respondents (99.6%) agreed that the smell of petroleum products or crude oil was evident in the air they breathed even as there were visible black particles (soo...
Source: Environmental Science and Pollution Research International - March 14, 2024 Category: Environmental Health Authors: Kabari Sam Nenibarini Zabbey Ijeoma Favour Vincent-Akpu Gentle Komi Peter Oghogho Onyagbodor Bolaji Bernard Babatunde Source Type: research
Molecules, Vol. 29, Pages 1266: Rare Earth Extraction from Phosphogypsum by Aspergillus niger Culture Broth
This study used Aspergillus niger (A. niger) fungal culture filtrate as a leaching agent to investigate the behavior of extracting REEs from PG through direct and indirect contact methods. According to the ICP-MS results, direct leaching at a temperature of 30 °C, shaking speed of 150 rpm, and a solid–liquid ratio of 2:1, achieved an extraction rate of 74% for REEs, with the main elements being yttrium (Y), lanthanum (La), cerium (Ce), and neodymium (Nd). Under the same conditions, the extraction rate of REEs from phosphogypsum using an A. niger culture filtrate was 63.3% higher than that using th...
Source: Molecules - March 13, 2024 Category: Chemistry Authors: Jiangang Zhang Xinyue Zhang Xiangdong Su Haijun Du Yongzhong Lu Qinglian Zhang Tags: Article Source Type: research
The Geography of Human Capital: Insights from the Subnational Human Capital Index in Indonesia
AbstractThis paper explores the spatial heterogeneity in the human capital potential of Indonesia ’s next generation by constructing and analyzing sub-national human capital indices (HCI) for 34 provinces and 514 districts in Indonesia. The paper identifies data and methodological constraints in the construction of these sub-national indices and proposes and implements strategies to overcome t hese challenges. Several interesting findings emerge from the analysis. First, Indonesian’s young generation can only achieve 53% of their future productivity relative to the full benchmark of health and education. Second, the va...
Source: Social Indicators Research - March 13, 2024 Category: International Medicine & Public Health Source Type: research
Carvacrol nanocapsules as a new antifungal strategy: Characterization and evaluation against fungi important for grape quality and to control the synthesis of ochratoxins
This study aimed to produce, characterize and assess the antifungal activity of carvacrol loaded in nanocapsules of Eudragit® and chia mucilage as strategy for controlling Botrytis cinerea, Aspergillus flavus, Aspergillus carbonarius, and Aspergillus niger. Eudragit® and chia mucilage were suitable wall materials, as both favored the encapsulation of carvacrol into nanometric diameter particles. Fourier Transform Infrared Spectroscopy (FTIR) analysis suggested a successful incorporation of carvacrol into both nanocapsules, which was confirmed by presenting a good encapsulation efficiency and loading capacity. Thermogravi...
Source: International Journal of Food Microbiology - March 10, 2024 Category: Food Science Authors: Athos T ópor Fl ávio Fonseca Veras Fabiola Ayres Cacciatore Rafaela Diogo Silveira Patr ícia da Silva Malheiros Juliane Elisa Welke Source Type: research
Carvacrol nanocapsules as a new antifungal strategy: Characterization and evaluation against fungi important for grape quality and to control the synthesis of ochratoxins
This study aimed to produce, characterize and assess the antifungal activity of carvacrol loaded in nanocapsules of Eudragit® and chia mucilage as strategy for controlling Botrytis cinerea, Aspergillus flavus, Aspergillus carbonarius, and Aspergillus niger. Eudragit® and chia mucilage were suitable wall materials, as both favored the encapsulation of carvacrol into nanometric diameter particles. Fourier Transform Infrared Spectroscopy (FTIR) analysis suggested a successful incorporation of carvacrol into both nanocapsules, which was confirmed by presenting a good encapsulation efficiency and loading capacity. Thermogravi...
Source: International Journal of Food Microbiology - March 10, 2024 Category: Food Science Authors: Athos T ópor Fl ávio Fonseca Veras Fabiola Ayres Cacciatore Rafaela Diogo Silveira Patr ícia da Silva Malheiros Juliane Elisa Welke Source Type: research
Carvacrol nanocapsules as a new antifungal strategy: Characterization and evaluation against fungi important for grape quality and to control the synthesis of ochratoxins
This study aimed to produce, characterize and assess the antifungal activity of carvacrol loaded in nanocapsules of Eudragit® and chia mucilage as strategy for controlling Botrytis cinerea, Aspergillus flavus, Aspergillus carbonarius, and Aspergillus niger. Eudragit® and chia mucilage were suitable wall materials, as both favored the encapsulation of carvacrol into nanometric diameter particles. Fourier Transform Infrared Spectroscopy (FTIR) analysis suggested a successful incorporation of carvacrol into both nanocapsules, which was confirmed by presenting a good encapsulation efficiency and loading capacity. Thermogravi...
Source: International Journal of Food Microbiology - March 10, 2024 Category: Food Science Authors: Athos T ópor Fl ávio Fonseca Veras Fabiola Ayres Cacciatore Rafaela Diogo Silveira Patr ícia da Silva Malheiros Juliane Elisa Welke Source Type: research
Effective synthesis of high-content fructooligosaccharides in engineered Aspergillus niger
Aspergillus niger ATCC 20611 is an industrially important fructooligosaccharides (FOS) producer since it produces the β-fructofuranosidase with superior transglycosylation activity, which is responsible for the c... (Source: Microbial Cell Factories)
Source: Microbial Cell Factories - March 9, 2024 Category: Microbiology Authors: Xiufen Wan, Lu Wang, Jingjing Chang, Jing Zhang, Zhiyun Zhang, Kewen Li, Guilian Sun, Caixia Liu and Yaohua Zhong Tags: Research Source Type: research
Risk factors associated with congenital central nervous system abnormalities in the National Hospital of Zinder, Niger
CONCLUSION: Risk factors such as family malformation history and consanguine marriage increased the risk of developing congenital malformations of the central nervous system. In contrast, folic acid supplementation in the index period and multiparity had a significant protective effect.PMID:38458060 | DOI:10.1016/j.neuchi.2024.101547 (Source: Neuro-Chirurgie)
Source: Neuro-Chirurgie - March 8, 2024 Category: Neurosurgery Authors: Rabiou Mahaman Sani Hamissou Moussa Maman Roufai George Thomas Ibrahim Hassane Ali Amadou Hounkpatin Seton Stachys Beranger Source Type: research
