Articles tagged with Food Chemistry
Researchers at ITQB NOVA extract bactericidal mixtures from tomato peels using a fast, simple, and sustainable process. The extracts show effectiveness against pathogenic bacteria, including Staphylococcus aureus and Escherichia coli. This breakthrough has the potential to provide antimicrobial properties to biomaterials.
Researchers at Leibniz-Institut für Lebensmittel-Systembiologie an der TU München discovered that casein digestion produces peptides with a satiating effect, stimulating gastric acid secretion via bitter receptors. This mechanism may help regulate food intake and maintain a healthy body weight.
A genetically modified yeast strain can alter fermentation to create beers with intense tropical flavors and aromas. The strains increase the amounts of free thiols, which provide aromatic compounds found in hops.
A recent study led by Veronika Somoza found that egg powder is a valuable source of essential nutrients, including vitamins and indispensable amino acids. The researchers discovered that the drying process did not lead to contamination with heavy metals and that egg powder can provide up to 61% of a child's daily requirement for selenium.
Scientists have identified 30 distinct compounds responsible for the Appalachian truffle's aroma, including six previously unknown to other truffle species. The findings may lead to future studies on the unique properties of this North American variety.
Researchers discover 20 compounds behind vanilla's flavor complexity, including previously unknown ones, and find that certain compounds impact consumer acceptability. The new profile could help producers identify high-quality extracts and improve curing methods.
A new Oregon State University study found significant differences in hop aroma profiles between Oregon and Washington-grown hops, affecting beer flavor. The research suggests that regional identity, similar to terroir in wine, can be attributed to specific growing environments.
Researchers developed an automated method for isolating volatile food ingredients, increasing yields and reducing contamination risks. The optimized 'aSAFE' technique eliminates operator errors and improves the accuracy of odorant analysis, enabling targeted product development in the food industry.
A University of Illinois study found tomatoes in Chicago backyard gardens have low levels of lead, making them relatively safe for consumption. However, improper soil handling and lack of washing can still pose health risks. Researchers recommend minimizing dust with heavy mulch and careful fruit washing to safely grow tomatoes.
Liu's three-year grant will pursue protein-derived cofactor studies to improve understanding of amino acids and their role in metabolism. The research aims to gain a quicker and more thorough understanding of amino acid function and purpose.
A new study published in ACS' Journal of Agricultural and Food Chemistry found that plant-based meat substitutes contain proteins that are not as easily absorbed by human cells. The researchers used a model meat alternative made from soy and wheat gluten, which was found to have lower peptide uptake than chicken meat.
Scientists identified proline-modified dipeptides and larger proteins that enhance umami and salty flavors in soy sauce. This discovery could help producers optimize fermentation conditions to boost desirable compounds and tailor the taste of soy sauce.
Researchers from Tokyo University of Science discovered that bony fish head cartilage contains abundant proteoglycans, including aggrecan, with similar CS structures to salmon nasal cartilage. This finding reveals the potential of sturgeon as an alternative source of CSPGs for health food formulations.
A team of scientists has discovered the molecular triggers of parosmia, a distorted sense of smell, and identified compounds responsible for triggering the sense of disgust. The study found that certain highly potent odor molecules in coffee can lead to this experience.
Adding pickled cucumbers to sour cream significantly increases antioxidant activity and reduces cholesterol oxidation products. The addition also improves the bioaccessibility of antioxidants, making it a promising strategy for enhancing the health-promoting activities of sour cream.
A new cocoa processing method called moist incubation has been found to produce a fruitier and more flowery-tasting dark chocolate compared to traditional fermentation. The method involves rehydrating dried, unfermented cocoa nibs in an acidic solution and heating them for 72 hours before re-drying.
Cornell scientists have created a biodegradable polymer to extend the shelf life of salad dressings, marinades, and beverages in refrigerators. This innovation uses a bioderived material that interacts with food without migrating into it, reducing waste and environmental impact.
Researchers identified cyclolinopeptides, particularly a methionine sulfoxide-containing class 4 peptide, as the primary cause of linseed oil's bitter off-flavor. Breeding or technical measures may help optimize flavor quality by reducing these peptides' content.
A study published in Current Biology found that people share similar odour preferences regardless of cultural background. The researchers discovered that the structure of the odour molecule determines whether a smell is considered pleasant or not.
Researchers found that long-term daily cocoa consumption didn't improve exercise-induced digestive issues in male athletes. Only minor changes to their gut microbiomes were observed, indicating cocoa is not an effective exercise supplement.
Biochemists analyze fermented drinks from Russia and South Africa for antioxidants, fatty acids, and volatile compounds. Kefir and ryazhenka have more diverse fatty acid profiles, while amasi has branched chain fatty acids with potential health benefits.
Researchers have created an environmentally friendly packaging material from apple waste, offering a potential alternative to plastic. The new material is made from apple pomace and has improved water resistance thanks to the incorporation of polymers and compounds.
A team of scientists from NTU Singapore has developed a plant-based emulsifier that is rich in protein and antioxidants, allowing it to replace eggs or dairy in food staples. The emulsifier is made by fermenting brewers' spent grain and can help cut down on food waste, reducing greenhouse gas emissions.
Measuring apple liquors' conductivity can provide a more objective assessment of their processing, allowing for better flavor quality. The study found that monitoring conductivity during distillation can identify the best conditions for producing high-quality apple spirits.
Researchers from The Ohio State University developed a novel method to supplement cow milk with vegetable protein using readily available dairy processing equipment. This innovation combines the benefits of casein micelles with pea protein to create functional, multisourced dairy products that can help bolster declining fluid milk sale...
Researchers have created a new combination of plant-based ingredients tailored for 3D printing meat alternatives, incorporating cocoa butter derived from chocolate. The formulation successfully mimics the texture and nutritional value of real meat, with potential benefits for animal welfare and environmental sustainability.
Phycocyanin, a natural food colorant, loses its hue when exposed to acidified beverages. Cornell researchers stabilized the protein using X-ray beams, allowing it to retain its vibrant blue color. The study provides insights into the molecular structure of phycocyanin and its interaction with light.
A study by the Technical University of Munich discovered that pungent substances from chili, ginger, and pepper are transferred to breast milk after consumption. These substances can be detectable in breast milk for several hours, with maximum concentrations being 70- to 350-fold below the taste perception threshold of an adult.
Researchers at Lancaster University examine the use of AI in the food sector, highlighting the need for trusted data collaboration to reduce waste and increase sustainability. They also warn about potential ethical issues and unexpected consequences of new technology.
A study by Veronika Somoza's team found that gallic acid stimulates gastric cells to secrete acid via the bitter receptor TAS2R4. The plant substance affects acid secretion regardless of whether it is added to water or red wine. This discovery provides new insights into the functions of bitter receptors in food ingredients.
Scientists have identified specific peptides in milk that relieve stress and enhance sleep. The study found that one of these peptides, YPVEPF, increased sleep duration by over 400% in mice.
Researchers at the Leibniz Institute for Food Systems Biology have identified the 'caramel receptor', which recognizes furaneol, a natural odorant found in fruits and coffee. This discovery contributes to a better understanding of molecular coding of food flavors.
Researchers at the University of Basel have developed a model that can efficiently detect food fraud by analyzing oxygen isotope ratios. The model, which uses publicly available data on temperature, precipitation, and humidity, simulates the regions of origin for various plant products with high accuracy.
Researchers found that children tend to have similar levels of sulfur volatiles in their saliva as their parents, suggesting shared oral microbiomes. Children who produce high amounts of sulfur volatiles dislike raw Brassica vegetables the most.
Scientists at TUM and LSB developed a new methodology to quantify the flavor profile of cocoa samples. The method provides quantitative data on 66 taste-decisive substances using a single mass spectrometric platform, allowing analysis of 200 samples per week.
A UMD researcher has been awarded a $6 million grant from the US Department of Energy to create sustainable products like biofuels and bioplastics from food waste. The project aims to understand waste sources, characterize municipal solid waste, and produce renewable resources.
Researchers analyzed 8 popular plant-based burgers and found that some closely mimic the odor of real beef when cooking. The Beyond Burger from Beyond Meat came closest to replicating the hamburger aroma, but still differed significantly.
A recent study reveals enormous chemical complexity in commercial beers, tracing tens of thousands of different molecules. The diversity originates from raw materials, processing, and fermentation.
Researchers found five strawberry cultivars suitable for growing in hot, dry regions like Texas. These varieties have desirable berry characteristics, including sweetness and flavor intensity. The top performers were Albion, Sweet Charlie, Camarosa, Camino Real, and Chandler.
Researchers from India and Russia developed edible film technology using sodium alginate and ferulic acid, extending shelf life and preventing oxidation processes. The films can be produced at a low cost and meet food production standards.
Researchers found that grape tannins interact with oil droplets in the mouth, making them less available to bind to saliva proteins. This interaction reduces astringency and improves the fruity flavor of wines.
A recent collaborative study has shown that resveratrol's anti-inflammatory properties are mediated by the bitter receptor TAS2R50. The researchers found that this receptor type plays a role in reducing inflammatory markers released by gum cells when treated with surface antigens from bacteria.
Researchers have developed a method to simultaneously measure 77 antibiotics in various foods, including meat, eggs, milk, cereals, vegetables, and fruits. The new approach allows for the detection of multiple classes of antibiotics at trace amounts, which can contribute to increased antibiotic resistance and gut microbiome imbalance.
Researchers have identified 20 proteins found in cricket food products that could cause serious allergic reactions in individuals with shellfish allergies. The study aims to provide a framework for detecting and labelling insect-derived allergens in food products, ensuring safe consumption by those with allergies.
Researchers introduced pseudo periodic tables filled with familiar items like fruits, nuts, and superheroes to improve students' comprehension of the periodic table. The study found that over 75% of students found this strategy useful and showed an increase in correct answers on midterm exams.
A new study published in ACS' Journal of Agricultural and Food Chemistry found that sous vide cooking increases beef protein digestibility compared to boiling or roasting. Sous vide cooking produced less protein oxidation and aggregation, releasing a greater quantity and variety of peptides.
A simple technique developed by researchers at the University of Waterloo can now effectively detect pyrethroids in honey, a common pesticide hazard for bees. The extraction method, using solid phase microextraction (SPME), makes it possible to measure safe levels and identify locations with high pesticide use.
Scientists analyzed six dog foods and found that certain aroma compounds, including (E)-2-hexenal, 2-furfurylthiol, and 4-methyl-5-thiazoleethanol, were correlated with increased canine intake. These findings could help dog food manufacturers create more appealing kibble.
A study by the Leibniz-Institute for Food Systems Biology found that modern wheat varieties contain slightly less protein than older varieties, while maintaining a consistent gluten content. The researchers also discovered that environmental conditions, such as precipitation, played a significant role in shaping protein composition.
Researchers studied how microbes in fermented sausages influence fatty acid production, revealing differences between microbe combinations. The study found that specific bacteria alter the composition of fatty acids, contributing to desirable traits like antifungal activity and flavor profiles.
Researchers developed antioxidant-rich powders from blueberry and persimmon waste, which showed beneficial effects on gut bacterial growth. The findings suggest that these powders could be used to boost carotenoids and anthocyanins in food formulations, potentially promoting human health.
Researchers have developed a sustainable method to recover valuable nutrients from shrimp processing water, including protein and lipids, for use in food or feed. The technique combines food-grade flocculants with dissolved air flotation, capturing up to 98% of the protein present in the water.
Researchers investigated how gut bacteria grow at different rates and their effect on dietary fibers, finding that faster growth rates alter the composition and metabolism of fecal microbiota. The study suggests that a person's diet can influence their gut microbiota by adjusting fiber intake to support healthy digestion.
Researchers created a tiny sensor that can detect ethylene gas concentrations as low as 15 parts per billion. The sensor uses carbon nanotubes and palladium catalysts to measure ethylene levels in real-time, revealing when fruits and vegetables are about to spoil.
Researchers found that hydroxyl radicals have a surprising partner in crime - Criegee intermediate. This new pathway could help explain age-related diseases and cancer, as well as how food decomposes over time. The study points to an unexpected link between atmospheric chemistry and our bodies' ability to ward off disease.
Researchers found that a popular modern variety of wheat does not impair gastrointestinal health in mice compared to heirloom wheat. Heirloom wheat slightly reduced levels of the pro-inflammatory cytokine interleukin-17 and improved gut barrier function, suggesting that modern wheat varieties may be healthier for healthy individuals.
Researchers analyzed capsaicinoid and capsinoid content in three chili peppers as they ripened. Capsaicoids accumulated earlier and at higher levels than capsaicinoids in some types of peppers, with potential implications for breeding studies and development of functional foods.
A team of researchers from the University of Vienna has shown that the widespread food estrogen zearalenone migrates through the placenta and is partially converted to other harmful substances. The study found that even small concentrations could have a greater impact on the embryo than previously assumed.
Researchers at RUDN University have created non-toxic derivatives of chitosan with enhanced antibacterial activity, comparable to modern antibiotics. These novel materials can be used as preservatives in food coatings, providing a safer and more sustainable solution.
A new technique developed by researchers allows for the creation of tastier low-fat potato chips by analyzing physical characteristics. The method, called in vitro oral processing, measures chip properties from first bite to swallow, enabling food scientists to link physical measurements with sensory perceptions.