| 单词 | polysaccharide |
| 例句 | The food science writer Harold McGee says that, like onions, shallots contain the fructose polymer inulin, a polysaccharide that breaks down into multiple simple sugars when heated, increasing the overall sweetness. What Store-Bought Fried Shallots Can Do for You 2022-05-23T04:00:00Z Alliums store their energy in polysaccharides, which are chains of monosaccharides, or simple sugars. These Leeks Are Anything but Humble 2021-04-16T04:00:00Z Shrimp and grasshoppers are both arthropods, and it’s a polysaccharide — chitin — common to the exoskeletons of both that causes sensitive eaters to suffer indignities ranging from hives and congestion to dizziness and vomiting. My first taste of flesh 2013-03-12T00:00:00Z This causes pectin — the polysaccharide glue that holds plant cells together — to break down more rapidly. The Best Roast Potatoes Manage to Get Even Better 2019-11-18T05:00:00Z For the other dispersion, they coated the particles with the polysaccharide chitosan, which contains positively charged amino groups in neutral or acidic environment. Recycling of water-based adhesive achieved by changing pH 2023-11-13T05:00:00Z Other genes worth targeting would be those controlling chitin, the hard polysaccharide that makes up insects’ exoskeleton. How Gene-Edited Insects Are Providing Food, Fuel and Waste Disposal 2023-08-28T04:00:00Z Arthropods also show the presence of an exoskeleton made principally of chitin, which is a waterproof, tough polysaccharide. Fundamentals of Biology 2015-01-01T00:00:00Z Starch, glycogen, cellulose, and chitin are examples of polysaccharides. Concepts of Biology 2013-04-25T00:00:00Z My patients often ask me about two popular oral supplements: Nutrafol, which contains saw palmetto, and Viviscal, which contains a compound of marine extracts and polysaccharides. Advice | Ask a Doctor: What treatments work for women with thinning hair? 2022-10-17T04:00:00Z Carbohydrates can store energy, such as the polysaccharides glycogen in animals or starch in plants. Chemistry 2019-02-14T00:00:00Z Carbohydrates are classified into three subtypes: monosaccharides, disaccharides, and polysaccharides. Biology for AP Courses 2022-06-09T00:00:00Z As with animal cells, the polysaccharide of storage is glycogen, rather than starch, as found in plants. Fundamentals of Biology 2015-01-01T00:00:00Z Carbohydrates are classified as monosaccharides, disaccharides, and polysaccharides, depending on the number of monomers in the molecule. Concepts of Biology 2013-04-25T00:00:00Z Complex carbohydrates are polysaccharides formed by joining together many monosaccharides. Miller & Levine Biology 2018-01-01T00:00:00Z They also provide structural support, such as the polysaccharide cellulose in plants and the modified polysaccharide chitin in fungi and animals. Chemistry 2019-02-14T00:00:00Z What is the major difference between chitin and other types of polysaccharides? Biology for AP Courses 2022-06-09T00:00:00Z The rigid layers of fungal cell walls contain complex polysaccharides called chitin and glucans. Fundamentals of Biology 2015-01-01T00:00:00Z Digestive enzymes within the lysosomes aid the breakdown of proteins, polysaccharides, lipids, nucleic acids, and even worn-out organelles. Concepts of Biology 2013-04-25T00:00:00Z Many animals store excess sugar as a polysaccharide called glycogen. Miller & Levine Biology 2018-01-01T00:00:00Z Secreted by fibroblasts, ground substance is made of polysaccharides, specifically hyaluronic acid, and proteins. Anatomy and Physiology 2013-06-19T00:00:00Z Chitin is similar to inulin, a polysaccharide with fructose, but with additional glucose monomers. Biology for AP Courses 2022-06-09T00:00:00Z Similarly, to trigger more robust protection in the elderly, a shot of a pneumococcal conjugate vaccine is boosted by one that contains a pneumococcal polysaccharide. Should you mix and match COVID-19 vaccines? Scientists are seeking answers 2021-02-12T05:00:00Z In plant cells, the Golgi has an additional role of synthesizing polysaccharides, some of which are incorporated into the cell wall and some of which are used in other parts of the cell. Concepts of Biology 2013-04-25T00:00:00Z Plants store excess sugar in a polysaccharide called starch. Miller & Levine Biology 2018-01-01T00:00:00Z The extracellular matrix contains fluid, proteins, polysaccharide derivatives, and, in the case of bone, mineral crystals. Anatomy and Physiology 2013-06-19T00:00:00Z Chitin contains phosphate groups that give it a stiffness not found in other polysaccharides. Biology for AP Courses 2022-06-09T00:00:00Z People over 65 should get the polysaccharide formula — brand name Pneumovax — but there are certain circumstances, such as immune-compromising conditions, to discuss with a health care provider. Don’t Let the Pandemic Stop Your Shots 2020-12-28T05:00:00Z A biofilm is a microbial community held together in a gummy-textured matrix, consisting primarily of polysaccharides secreted by the organisms, together with some proteins and nucleic acids. Concepts of Biology 2013-04-25T00:00:00Z The problem was that the vaccine, known as a polysaccharide because it was based on sugar molecules that form the outer capsule of the bacteria, was not easily visible to infant immune systems. John Robbins, pioneer of a meningitis vaccine, dies at 86 2019-12-19T05:00:00Z Cellulose, a polysaccharide that is the primary component of the cell wall of green plants, is the component of plant food referred to as “fiber”. Anatomy and Physiology 2013-06-19T00:00:00Z The other three types of cell walls are composed of polysaccharides, glycoproteins, or pure protein. Biology for AP Courses 2022-06-09T00:00:00Z When I approached my adviser, he suggested a technique I hadn’t considered, and it helped me to uncover a difference in the composition of the polysaccharides that was behind the inconsistent signals. What not to do in graduate school 2019-07-18T04:00:00Z Glucose and other simple sugars, polysaccharides, amino acids, nucleic acids, fatty acids, and derivatives of glycerol are found there too. Concepts of Biology 2013-04-25T00:00:00Z Dr. Robbins and his colleagues found a solution in a process called conjugation, in which a protein was bonded with the polysaccharide, thus rendering it more visible. John Robbins, pioneer of a meningitis vaccine, dies at 86 2019-12-19T05:00:00Z Figure 2.20 Three Important Polysaccharides Three important polysaccharides are starches, glycogen, and fiber. Anatomy and Physiology 2013-06-19T00:00:00Z Generic pathogen identifiers such as bacterial surface polysaccharides or viral capsid proteins are recognized by cells of the innate immune system. Biology for AP Courses 2022-06-09T00:00:00Z For example, when I switched suppliers for a naturally derived polysaccharide, I witnessed unexpected results. What not to do in graduate school 2019-07-18T04:00:00Z While the chief component of prokaryotic cell walls is peptidoglycan, the major organic molecule in the plant cell wall is cellulose, a polysaccharide made up of long, straight chains of glucose units. Concepts of Biology 2013-04-25T00:00:00Z The shape of these chains is important: Consider starch and cellulose, two common polysaccharides of glucose. Could a virus with a sweet tooth become a weapon against cancer? 2018-06-01T04:00:00Z Figure 24.3 Sources of ATP During catabolic reactions, proteins are broken down into amino acids, lipids are broken down into fatty acids, and polysaccharides are broken down into monosaccharides. Anatomy and Physiology 2013-06-19T00:00:00Z Starch, glycogen, cellulose, and chitin are primary examples of polysaccharides. Biology for AP Courses 2022-06-09T00:00:00Z I was lost after days of measurements: how could the same polysaccharide give me different signals? What not to do in graduate school 2019-07-18T04:00:00Z Like plant cells, fungal cells are surrounded by a thick cell wall; however, the rigid layers contain the complex polysaccharides chitin and glucan and not cellulose that is used by plants. Concepts of Biology 2013-04-25T00:00:00Z These are produced by making covalent links between bacterial polysaccharides and proteins. Deploy vaccines to fight superbugs Sugar catabolism breaks polysaccharides down into their individual monosaccharides. Anatomy and Physiology 2013-06-19T00:00:00Z Monosaccharides are linked by glycosidic bonds that are formed as a result of dehydration reactions, forming disaccharides and polysaccharides with the elimination of a water molecule for each bond formed. Biology for AP Courses 2022-06-09T00:00:00Z The stuff is a powdery polysaccharide that is often used in foods and now also in recipes to powder fats, cheeses and even chocolate, according to the cooking website Serious Eats. The taste of melted butter is just a sprinkle away | Cannabis recipe 2017-05-05T04:00:00Z As with animal cells, the fungal storage polysaccharide is glycogen rather than starch, as found in plants. Concepts of Biology 2013-04-25T00:00:00Z It is, says Colin Sanders, a cosmetic scientist and blogger, “likely to be rich in water-soluble biopolymers such as polysaccharides and proteins”. Are snail slime products worth shelling out for? 2017-02-06T05:00:00Z Anabolic reactions combine monosaccharides to form polysaccharides, fatty acids to form triglycerides, amino acids to form proteins, and nucleotides to form nucleic acids. Anatomy and Physiology 2013-06-19T00:00:00Z Starch and glycogen, examples of polysaccharides, are the storage forms of glucose in plants and animals, respectively. Biology for AP Courses 2022-06-09T00:00:00Z Many of the plant polysaccharides that are found within dietary fibre are structurally complex. Diet-microbiota interactions as moderators of human metabolism : Nature : Nature Publishing Group 2016-07-05T04:00:00Z Fungal exoenzymes are able to break down insoluble polysaccharides, such as the cellulose and lignin of dead wood, into readily absorbable glucose molecules. Concepts of Biology 2013-04-25T00:00:00Z To survive, the bacteria create communities known as biofilms that are coated with protective polysaccharides. Infectious disease: Something in the water : Nature : Nature Publishing Group 2016-05-17T04:00:00Z The complex sugars are also called polysaccharides and are made of multiple monosaccharide molecules. Anatomy and Physiology 2013-06-19T00:00:00Z Enzymes within the lysosomes aid the breakdown of proteins, polysaccharides, lipids, nucleic acids, and even worn-out organelles. Biology for AP Courses 2022-06-09T00:00:00Z This now includes certain non- starch polysaccharides – which are large-sized carbohydrates that aren't digested, but some are fermented once they reach the large intestine. Figuring Out Dietary Fiber: Does Your Child Need It? 2016-05-18T04:00:00Z This mushroom grown in North America, Asia and Europe contains polysaccharides, which help fortify the immune system; it's used commonly in Japan in alternative health practices. New super-foods, from baobab to turkey tail, come with promises and caveats 2015-09-12T04:00:00Z The world used to rely on polysaccharide vaccines, which are cheap, but their protection does not last long, and they do not kill silent throat infections. New Meningitis Strain in Africa Brings Call for More Vaccines 2015-07-31T04:00:00Z After digestive processes break polysaccharides down into monosaccharides, including glucose, the monosaccharides are transported across the wall of the small intestine and into the circulatory system, which transports them to the liver. Anatomy and Physiology 2013-06-19T00:00:00Z In plant cells, the Golgi apparatus has the additional role of synthesizing polysaccharides, some of which are incorporated into the cell wall and some of which are used in other parts of the cell. Biology for AP Courses 2022-06-09T00:00:00Z Sixty measurements later, they concluded that banana skins were more slippery than both apple peel and tangerine skin, and that the banana's polysaccharide follicular gel was probably to blame. Ig Nobels: British researchers take coveted science humour prize 2014-09-18T04:00:00Z Starch is a polysaccharide consisting of two components: a linear glucose polymer called amylose and a highly branched glucose polymer called amylopectin. Strong, Clear Bioplastic Containers Could Be Made from Rice 2014-07-30T04:00:00Z Starch, like cellulose, is a polysaccharide - a long chain of sugar molecules fused together. A brief history of plastic 2014-05-16T04:00:00Z Inulin is a plant polysaccharide that is neither reabsorbed nor secreted by the kidney. Anatomy and Physiology 2013-06-19T00:00:00Z One type is composed of pseudopeptidoglycan, which is similar to peptidoglycan in morphology but contains different sugars in the polysaccharide chain. Biology for AP Courses 2022-06-09T00:00:00Z No matter the oil, the process varies little, Mr. Licari said, and is easily adapted to make the complex sugars — polysaccharides — that went into the original Algenist skin care line. For Solazyme, a Side Trip on the Way to Clean Fuel 2013-06-22T19:42:36Z “There are hundreds of different polysaccharides” — complex carbohydrates, including fiber — “in plants, and different microbes like to chomp on different ones.” Say Hello to the 100 Trillion Bacteria That Make Up Your Microbiome 2013-05-15T11:00:20Z The USA Food and Drug Administration permit a human health claim for cell-wall polysaccharides from barley grain. A physical, genetic and functional sequence assembly of the barley genome 2012-12-05T15:22:37.090Z Other early induced proteins specific for bacterial cell wall components are mannose-binding protein and C-reactive protein, made in the liver, which bind specifically to polysaccharide components of the bacterial cell wall. Anatomy and Physiology 2013-06-19T00:00:00Z Complex carbohydrates, including polysaccharides, can be broken down into glucose through biochemical modification; however, humans do not produce the enzyme cellulase and lack the ability to derive glucose from the polysaccharide cellulose. Biology for AP Courses 2022-06-09T00:00:00Z Microbial fermentation of polysaccharides may affect host adiposity through several complementary mechanisms, so modulation of the microbiota and its fermentation capacity may provide new avenues for managing obesity. Functional interactions between the gut microbiota and host metabolism 2012-09-13T11:21:18.130Z Butterfly wings get their color from naturally occurring photonic crystal structures in scales made of chitin, a polysaccharide that shows up in all kinds of insects. Shiny! On the Iridescence of Squid 2012-08-25T22:45:00.177Z Serum’s product is a so-called conjugate, in which the polysaccharide shell is combined with a protein carrier, a process that confers immunity from the disease for up to 20 years, Kulkarni said. Indian Drugmaker's Vaccine Beats Glaxo 2011-06-16T05:17:44Z Your bodies do not produce enzymes that can break down most fibrous polysaccharides, such as cellulose. Anatomy and Physiology 2013-06-19T00:00:00Z Large, complex molecules of proteins, polysaccharides, and lipids must be reduced to simpler particles such as simple sugar before they can be absorbed by the digestive epithelial cells. Biology for AP Courses 2022-06-09T00:00:00Z Preziosi, who worked with 24 other investigators on the studies which were conducted in Mali, Gambia and Senegal, said results showed that compared to the older polysaccharide vaccine, MenAfriVac was "about 20 times more effective." New meningitis shot could halt African epidemics 2011-06-15T21:05:05Z A bigger test is ongoing in the Netherlands, where the polysaccharide vaccine is not used. Pfizer's Vaccine Plan 2011-05-09T14:31:33Z Immunity is developed when the body produces antibodies after being exposed to a small chunk of the pathogen’s external shell, which is made of sugars that are also known as polysaccharides. Indian Drugmaker's Vaccine Beats Glaxo 2011-06-16T05:17:44Z While indigestible polysaccharides do not provide any nutritional value, they do provide dietary fiber, which helps propel food through the alimentary canal. Anatomy and Physiology 2013-06-19T00:00:00Z Consisting of carbon, hydrogen, and oxygen in the ratio CH2O or carbon hydrated with water, carbohydrates are classified as monosaccharides, disaccharides, and polysaccharides depending on the number of monomers in the macromolecule. Biology for AP Courses 2022-06-09T00:00:00Z Early in the 20th century, rudimentary attempts at pneumococcal vaccination, following the discovery of the outer polysaccharide capsule of Streptococcus pneumoniae, were fairly successful. Short Story Science: Lenina Versus the Pneumococcus 2011-04-07T19:15:02.207Z One way the bacterium evades the body’s immune system is by wrapping itself in a sugar coating called a polysaccharide capsule. Pneumonia Drugs Helped Evolve a Superbug 2011-01-28T16:09:00Z All people rely on their gut microbes for doing tricky parts of digesting land plants, such as breaking down polysaccharides, a family of compounds that includes marine algae’s porphyran. Eating Seaweed May Have Conferred Special Digestive Powers 2010-04-08T14:30:00Z It is a constituent of sucrose, of raffinose, and of the polysaccharide inulin, from which it may be obtained by hydrolysis. The Chemistry of Plant Life Examples of polysaccharides include cellulose and starch in plants and glycogen in animals. Biology for AP Courses 2022-06-09T00:00:00Z The polysaccharides are insoluble in alcohol, and only soluble to a certain extent in pure water. Dietetics for Nurses The long polysaccharide chains may be branched or unbranched. Biology for AP Courses 2022-06-09T00:00:00Z Michel’s team discovered the porphyran-digesting powers of the human gut as part of a long-term search for enzymes that breakdown polysaccharides. Eating Seaweed May Have Conferred Special Digestive Powers 2010-04-08T14:30:00Z The polysaccharides which, like the simpler saccharides, or sugars, which have thus far been studied, undoubtedly serve as reserve food for plants, are known under the general name of "starches." The Chemistry of Plant Life Insects have a hard outer skeleton made of chitin, a unique nitrogen-containing polysaccharide. Biology for AP Courses 2022-06-09T00:00:00Z Glycogen, which is a multi-branched polysaccharide of glucose, is the compound. Biology for AP Courses 2022-06-09T00:00:00Z These are by far the most common type of polysaccharides to be found in plants. The Chemistry of Plant Life When they reach the storage organs, they may be recondensed into insoluble polysaccharides, or stored as soluble sugars. The Chemistry of Plant Life Each individual polysaccharide which has been studied thus far yields only a single hexose, although the particular hexose obtained varies in different cases. The Chemistry of Plant Life Carbohydrates are classified as monosaccharides, disaccharides, and polysaccharides depending on the number of monomers in the molecule. Biology for AP Courses 2022-06-09T00:00:00Z The polysaccharides, which are generally insoluble, must be broken down into the simpler soluble sugars before they can be translocated to other organs of the plant for immediate, or future, use. The Chemistry of Plant Life These substances constitute a group of compounds which are very similar to the polysaccharide carbohydrates in composition and constitution, but which serve entirely different purposes in the plant. The Chemistry of Plant Life |
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