Results 61 to 70 of about 21,794 (203)

Spectrofluorometric Determination of Putrescine: Optimization of the Putrescine–Orthophthaldehyde Complex Using Spectrofluorometry

Journal of AOAC INTERNATIONAL, 2016
Abstract In alkaline medium, the complex formed between putrescine and orthophthalaldehyde was studied using spectrofluorescence. The derivative is kinetically stable 24 h after complexation. The stoichiometry of the complex is 1:1 at maximum fluorescence intensity, also 24 h after complexation.
Oladele, Oyelakin, Moumouny, Traoré, El Hadji Babacar, Mbye, Abdourahmane, Khonté, Lamine, Cisse, Abdoulaye N, Faye, Ousman, Faye, Moussa, Mbaye, Khemesse, Kital, Mame Diabou, Gaye-Seye, Atanasse, Coly, Alphonse, Tine, François, Delattre   +12 more
openaire   +2 more sources

Interkingdom Interactions in the Gut: Ecological Mechanisms, Homeostasis, and Therapeutic Modulation

Gut Medicine, EarlyView.
ABSTRACT The gut microbiota constitutes a highly complex and dynamic ecosystem that profoundly influences host physiology, metabolism, and immunity. This review provides an integrative overview of the mechanisms through which gut microorganisms—particularly bacteria and fungi—interact with host cells and with each other to maintain intestinal ...
Rui‐Qi Wei, Xin‐Wei Sun, Hao‐Jie Huang, Yu‐Zhi Zhao, Shuang‐Jiang Liu, Chang Liu   +5 more
wiley   +1 more source

Gut microbiome‐derived metabolites show promise in cancer research and therapy

Interdisciplinary Medicine, EarlyView.
The metabolites produced by the gut microbiome, which are subject to regulation by multiple factors, play a pivotal role in the progression of various types of cancer. These metabolites not only function as potential biomarkers for the early detection and monitoring of tumor development, but also actively participate in cancer therapeutic processes ...
Kangjie Yang, Yifan Wang, Daolin Tang, Peilong Li, Lutao Du   +4 more
wiley   +1 more source

The barley–malt–beer chain: A process and food safety approach

JSFA reports, EarlyView.
Abstract This review addresses the current state of knowledge on the barley–malt–beer chain and its main physical, chemical, and microbiological contaminants, with particular emphasis on spoilage microorganisms and their toxic metabolites. The barley–malt–beer production chain represents a mature and globally relevant agro‐industrial sector that ...
José Gómez‐Espinoza, Miguel Angel Avila‐Perches, Daniela Gómez‐Espinoza, Miguel Ángel Guzmán‐Altamirano, Alfredo Josué Gámez‐Vázquez, María Guadalupe Gómez‐Espinoza   +5 more
wiley   +1 more source

Polyamine treatments: an effective strategy to improve crop yield and fruit colour and to preserve quality of ‘Mollar de Elche’ pomegranate fruit during storage at chilling temperatures

Journal of the Science of Food and Agriculture, EarlyView.
Abstract BACKGROUND Climate change in Spain is altering the optimal conditions for producing high‐quality ‘Mollar de Elche’ pomegranate fruit, due to reduced colour development in husk and arils. In addition, the pomegranate requires storage above 7–10 °C, depending on cultivar, to preserve its quality because it is susceptible to chilling injury (CI ...
Jenifer Puente‐Moreno, Fernando Garrido‐Auñón, María E García‐Pastor, Fabián Guillén, Salvador Castillo, Daniel Valero, María Serrano   +6 more
wiley   +1 more source

Main effects of ascorbic acid levels and organic acid type on physicochemical properties, microbial populations, texture, and biogenic amine formation in sucuk

Journal of the Science of Food and Agriculture, EarlyView.
Abstract BACKGROUND Sucuk is a traditional Turkish dry fermented sausage, the quality and safety of which depend on physicochemical, microbiological, and biochemical changes during fermentation and ripening. Organic acids, their salts, and antioxidants such as ascorbic acid (AA) are widely used in fermented meat products; however, information about ...
Gülsüme Bıçakcı, Ömer Eren
wiley   +1 more source

Putrescine accumulation in human pulmonary tumours [PDF]

British Journal of Cancer, 1996
Type II pneumocytes and Clara cells, both epithelial cells that possess an active uptake system for polyamines, have been identified as possible precursor cells of at least some types of lung tumours. In this study we have investigated whether human pulmonary tumours exhibit putrescine uptake. Lung slices from both tumoral tissue and non-tumoral tissue,
P H, Hoet, D, Dinsdale, E K, Verbeken, M, Demedts, B, Nemery   +4 more
openaire   +2 more sources

Increased expression of aromatase after focal cerebral ischemia: Relevance to neuroprotection and functional recovery

Neuroprotection, EarlyView.
Abstract Aim Aromatase is the key enzyme in the biosynthesis of 17β‐estradiol, the most potent estrogen, which has pleiotropic neuroprotective properties. Aromatase levels increase in the brain after stroke, and its gene variants increase susceptibility to stroke. This study aims to determine whether aromatase overexpression improves stroke outcome and
Lindsay Gallagher, Anna F. Dominiczak, Luis M. Garcia‐Segura, Nobuhiro Harada, J. B. Hutchison, James M. Mullin, Delyth Graham, Peter O'Shaughnessy, Hilary Victoria O. Carswell   +8 more
wiley   +1 more source

Going Deep into the Surface Chemistry of Carbon Dots: Influence of Functional Groups on the Redox Abilities

Small, EarlyView.
The chemical structure of Carbon Dots (CDs) is still a mystery despite years of study. Herein, we show how CDs with a higher density of surface‐accessible amines display enhanced (photo)redox performance. Electrochemical and thermodynamic analyses confirmed the feasibility of electron transfer, while mechanistic investigations revealed that the ...
Laura Morbiato, Maria Sbacchi, Jacopo Dosso, Paolo Pengo, Pierangelo Gobbo, Giacomo Filippini, Maurizio Prato   +6 more
wiley   +1 more source

Putrescine treatment has a higher effect on 5mC DNA methylation profile of wheat leaves under white than under blue light conditions

Scientific Reports
Polyamines play a pivotal role in plant growth and development by modulating primary metabolism and gene expression patterns. However, their regulatory effect on epigenetics is still not clear.
Imre Majláth, Kinga Benczúr, Altafur Rahman, Tibor Janda, István Likó, János Kádas, Magda Pál   +6 more
doaj   +1 more source