Articles tagged with Acids
Researchers with Berkeley Lab have characterized the hydration structure of carbon dioxide gas dissolved in water, revealing its role in forming carbonic acid and bicarbonate. The study uses X-ray absorption spectroscopy and molecular dynamics simulations to provide a detailed understanding of this critical chemistry.
Groundwaters in southern Western Australia have pH levels as low as 2.4 and salinities up to 28%, affecting bedrock and sediments. Human activities like mining and agriculture contributed to this extreme acidity, with deforestation and irrigation using desalinized seawater exacerbating the issue.
Research by Jamshidi et al. found that combining salicylic acid, malic acid, and urea can extend cut gerbera blooms' vase life from a week to over two weeks. These compounds prevent bacterial contamination and sustain enzyme activity in the stems.
Hot vents on the seabed may have spontaneously produced organic molecules essential for life, according to a new study. The surfaces of mineral particles inside hydrothermal vents exhibit chemical properties similar to enzymes, allowing them to create simple carbon-based molecules like methanol and formic acid.
Researchers Luigi D'Ascenzo and Pascal Auffinger classify 17 carboxyl(ate) motifs in crystal structures using stereochemical considerations. They provide a systematic naming system and implications for crystal engineering, pharmaceutical research, and biomolecular sciences.
Researchers found that different production methods, including natural fermentation and micro-oxygenation, impact the chemical profiles of Pinot Noir wines. The study suggests that winemakers should include information about added chemicals on wine labels.
Researchers at NREL have developed a new process to convert lignin-derived compounds into adipic acid, an industrial dicarboxylic acid used in the production of nylon. This breakthrough has significant implications for the economic viability and environmental sustainability of biorefineries.
A study published in the Journal of the American Society of Nephrology suggests that a diet high in animal proteins, especially red meat, can increase the risk of developing kidney failure in people with chronic kidney disease. Conversely, consuming diets rich in fruits and vegetables may protect kidney function.
A study published in International Journal of Molecular Sciences shows that lithocholic acid, a bile acid produced in the liver, is effective in killing cancer cells and delaying aging. The findings have implications for slowing down breast and prostate cancer development.
Researchers have developed a fluorescent hormone biosensor that reveals the dynamics of jasmonate signalling in plants, allowing for the imaging of plant defence mechanisms in real time. This breakthrough enables the study of how plants coordinate their defence responses to mechanical damage and disease.
Researchers have found iron-based catalysts for diazo compound transformations, offering a sustainable alternative to precious metals. These iron complexes exhibit unique advantages in specific reactions, including cyclopropanation and enantioselectivity.
Research by Indiana University scientists reveals that soil mineral surfaces determine nitrous acid release into the atmosphere, playing a pivotal role in smog formation and greenhouse gas lifetime. This finding could contribute to improved models for understanding and controlling air pollution, a significant public health concern.
A Swiss Federal Laboratories for Materials Science and Technology (EMPA) team has developed a chemical navigation system that uses the Marangoni effect to find the quickest route to a destination. By applying acid and alkaline liquids with dyes, the system creates a color trail that indicates the shortest path.
Researchers have gained valuable new information about carbonic acid, a critical intermediate species in the equilibrium between carbon dioxide, water, and minerals. The study's findings provide detailed insights into the hydration properties of aqueous carbonic acid, benefiting the development of carbon sequestration technologies.
Researchers discovered cesium carbonate generates an aggregate state that acts as the starting point for catalytic reactions. This finding has the potential to impact C-H functionalization reactions and catalytic reaction development.
Researchers developed a new continuous glucose monitoring material that changes color as glucose levels fluctuate, offering higher sensitivity and precision than current point measurements. The color-changing material is simple, low-cost to manufacture, and can be used for short-term monitoring of patients in intensive care units.
A new implantable molecular device measures blood pH and triggers insulin production to regulate metabolic processes. The device, tested in mice with type 1 diabetes, successfully compensated for acidosis and restored normal blood sugar levels.
Researchers found that excess uric acid can disrupt normal metabolism, leading to the development of metabolic syndrome. A new study suggests that diet and fructose consumption may contribute to high uric acid levels, which can cause inflammation and oxidative stress in the body.
Researchers at the University of Bristol have developed a new strategy for disconnecting molecules, which could be used to create a tuberculosis (TB) vaccine. The method, described in Nature Chemistry, enables the synthesis of complex lipids like hydroxyphthioceranic acid in just 14 steps.
Three plant-derived compounds, caffeic acid, rosmarinic acid, and trans-cinnamic acid, have been found to protect human skin cells from gamma radiation-induced damage during cancer radiotherapy. The compounds reduced reactive oxygen species and DNA damage by up to 40% and 15%, respectively.
Researchers have developed a system to convert hydrogen gas into formic acid, a less flammable liquid fuel that can be safely stored and transported. The process uses two chemical reactions and atmospheric CO2, offering a sustainable solution for energy storage and synthesis of various products.
Researchers discovered uric acid's role as a major intracellular antioxidant that prevents oxidative stress and its impact on cancer and aging. The p53-GLUT9 pathway is a mechanism to prevent ROS accumulation, which causes cell damage.
Researchers at Ruhr-University Bochum decode mechanism for appreciation of the barrique character, a bitter sensation on the tongue. They found that gallic acid groups are responsible for triggering this sensation, which is mediated by the trigeminal nerve.
Raspberries are sought after for their health benefits, with growing demand for novel fruit colors. Researchers found that different colored raspberries have distinct postharvest qualities, including decay incidence and juice leakage rates.
Researchers at the University of Iowa have discovered a natural compound in green tomatoes that stimulates muscle growth and protects against muscle wasting. Tomatidine, found in green tomatoes, generates changes in gene expression opposite to those that occur in muscle cells affected by muscle atrophy.
A new study reveals that uric acid in urine generates hazardous 'volatile disinfection byproducts' in swimming pools when combined with chlorine. This reaction can lead to toxic compounds like cyanogen chloride and trichloramine, posing health risks to swimmers.
Researchers found that uric acid from urine combines with chlorine to form NCl3 and CNCl, potentially hazardous compounds. Swimmers can improve pool conditions by urinating in bathrooms, not in the pool.
Researchers found that certain bacteria in the stomach break down dark chocolate's polyphenolic compounds into anti-inflammatory compounds. Combining dark chocolate with prebiotics and solid fruits may enhance health benefits. The study suggests a new approach to improving cardiovascular health through gut microbiome modulation.
Scientists at Technical University of Munich have discovered a way to create natural substances using photoreactions and a special catalyst, reducing the formation of unwanted mirror-image variants. This method has potential for industrial applications in drug development and plant protection.
Researchers found mixed effects on blueberry polyphenols after baking, cooking, and proofing. While anthocyanin levels decreased and phenolic acids increased, the use of yeast during baking might help retain these beneficial compounds.
A recent study found that ursolic acid induces neural regeneration and repair after sciatic nerve injury in mouse models. The compound promoted the regeneration of injured nerve myelin sheaths and reconstructed muscular functions.
Salvianolic acid B, a compound found in salvianolate, has been shown to attenuate brain tissue damage and inhibit neuronal apoptosis in cerebral ischemia-reperfusion injury models. The study suggests that salvianolate increases heat shock protein expression, which may help protect against such injuries.
Researchers have developed a new hyperpolarization technique for MRI scans using naturally occurring pyruvic acid, reducing the need for potentially toxic substances. This breakthrough improves imaging quality and diagnosis while minimizing health risks.
A Kansas State University microbiologist has discovered a breakthrough medicinal compound that treats Candida albicans, a common human fungal pathogen. The nontoxic gymnemic acid compound blocks the virulence properties of the fungus, making it more treatable and reducing its risk to patients.
A new type of organocatalyst, using halogen bridges, is introduced as a potentially environmentally friendlier alternative to existing catalysts. This catalyst shows special properties that open up new avenues for application in organic reactions.
Researchers at Arizona State University have developed a new design for salmonella-based vaccines that can survive the acidic environment of the stomach. This improvement allows for stronger immune responses and potentially longer-term protection against diseases.
Researchers found that RNA bases preferentially bound to decanoic acid, priming the system for RNA production and simplifying the emergence of primitive cells. Sugars also provided protective benefits, with ribose being more effective than glucose or xylose.
Researchers at ETH Zurich developed a new PET tracer that targets the folic acid receptor on cancer cells, enabling precise diagnosis and predicting patient response to therapy. The tracer also has potential for displaying inflammatory diseases and medication development.
Researchers from LCSB have discovered that microglial cells in the brain produce itaconic acid, an endogenous antibiotic that prevents bacterial growth. This finding has implications for understanding Parkinson's disease and its connection to the immune system.
Researchers have developed a cost-effective method to convert ethanol into butanol, a more efficient and sustainable fuel source. The new catalysts enable higher selectivity and conversion rates, making butanol an attractive alternative to gasoline.
Researchers have found that chlorogenic acids extracted from unroasted coffee beans can significantly reduce blood sugar levels and improve glucose control. The study involved 56 men and women who took different doses of a commercial green coffee extract, with results showing a dose-response effect and no gastrointestinal side effects.
Researchers at Brown University have made a breakthrough in making acrylate by combining carbon dioxide with ethylene, potentially leading to a cheaper and more sustainable way to produce the commodity chemical. The team discovered that Lewis acids can break open a five-membered ring, allowing for the formation of acrylate.
A Korean research team successfully produced 5-aminovaleric acid and glutaric acid using metabolically engineered Escherichia coli. The study demonstrates the first microbial process for producing these C5 platform chemicals, showcasing the potential for sustainable production of chemicals and plastics.
Researchers at Rice University have developed a new process to convert soybean byproducts into succinic acid, a valuable chemical used in various industries. The process uses genetically modified E. coli bacteria to metabolize soluble carbohydrates from soybeans, achieving a high yield and a 1:1 ratio of feedstock to product.
Scientists at Sanford-Burnham Medical Research Institute have discovered that carnosic acid, a component of rosemary, promotes eye health and protects retinas from degeneration. The findings suggest a possible new approach for treating age-related macular degeneration.
Researchers at Harvard University found that certain atmospheric particles can resist chemical aging in a jelly-like phase, challenging current climate models. This discovery may impact the formation of clouds and light absorption.
Researchers have identified a cellular pathway for the effects of alpha hydroxyl acids on keratinocytes, leading to skin exfoliation. The study reveals that glycolic acid triggers an acidic environment within cells, activating the TRPV3 ion channel and causing calcium ion overload, resulting in cell death.
A CU-Boulder-led research team has discovered a new chemical compound in Earth's atmosphere that reacts with sulfur dioxide to form sulfuric acid, which impacts climate and human health. The newly found oxidant affects the atmospheric sulfur cycle and may explain recent cooling trends in parts of the southeastern United States.
Researchers at Kyoto University's Center for iPS Cell Research and Application have successfully recreated ALS-associated abnormalities in motor neurons derived from patients' induced pluripotent stem cells. Anacardic acid was found to rescue certain ALS phenotypes in vitro, offering a promising lead for developing new drug treatments.
Researchers have discovered high levels of sulphur and iron compounds in shipwrecks off the west coast of Sweden, including warships and Viking vessels. The presence of toxic hydrogen sulphide poses a risk to wooden hulls and requires special conservation procedures to prevent damage.
Researchers have successfully boosted the fluorescent efficiency of ultra-small quantum dots to as high as 45%, making them suitable for special lighting applications. This improvement translates to a higher luminous efficiency of about 40 lumens/watt, outperforming existing LEDs and incandescent bulbs.
Researchers from New York University and the Max Planck Institute reveal that phosphoric acid fuel cells transfer protons in a more streamlined fashion than water-based solutions. This process involves temporary 'proton wires' formed by multiple phosphoric acid molecules, allowing for high proton conductivity.
The study reveals that gut microbiota modulates bile acid synthesis by altering the bile acid pool composition, reducing FXR inhibition in the small intestine.
Researchers at the University of Bristol have solved the 70-year-old mystery of stipitatic acid synthesis by identifying genes responsible for its production. The discovery has far-reaching implications for understanding organic chemistry and potentially leads to new drugs with antibacterial and antimalarial properties.
A new method for mass-producing high-quality graphene nanosheets has been developed by researchers, enabling the production of sheets at a lower cost than current methods. The technique uses dry ice and an industrial process to create flakes of graphite with opened-up edges, making them soluble in solvents and allowing for easy separat...
Researchers at Brookhaven Lab have found a safe and reversible way to store hydrogen fuel by connecting it to carbon dioxide in a mildly basic solution. The reaction can be reversed by adding acid, making it suitable for use in hydrogen fuel vehicles and other high-powered systems.
The Academy of Finland Centre of Excellence develops microbial cells to produce organic acids for industrial applications, including manufacturing bioplastics and medical materials. The method allows for efficient conversion of plant biomass sugars into sugar acids and their derivatives, offering alternatives to oil-based raw materials.
Researchers at Max Planck Institute develop simple process for artemisinin synthesis using waste product from current production as starting substance. The new method uses photochemistry to incorporate an endoperoxide group into the molecule, producing large volumes of artemisinin under controlled conditions. This could cover global de...
Phosphonic acids are persistent pollutants found in common medicinal products, detergents, and herbicides. Bacteria have been shown to break down these molecules with surprising ease, thanks to the identification of specialized proteins that perform key bond-breaking steps.
Researchers discovered three bile acids produced by gut bacteria that influence statin effectiveness in lowering cholesterol. This finding supports the role of the gut microbiome in drug response and metabolism, opening new avenues for targeted therapies and diagnostics.