Hydrolyzing activity
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Achyranthes bidentata Blume is a precious herb. In the chemical composition of its root, saponin is the main compound that when being hydrolyzed form oleanolic acid - an active ingredient in liver cell protection, anti-tumor and antiviral agent, anti-HIV and HCV in vitro.
5p vialfrednobel 21-12-2023 4 2 Download
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Using the natural agents with inhibitory activity against digestive enzymes α-glucosidase and αamylase capable of hydrolyzing carbohydrates into glucose to reduce blood glucose levels in the blood is one of the effective strategies to control diabetes, especially type II diabetes. α-Mangostin (AMG) was proven to have strong biological activities, such as antifungal, antibacterial, anti-inflammatory, anti-cancer.
9p vimulcahy 18-09-2023 2 2 Download
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We report a low cost and environmentally-friendly solvent system to synthesize TiO2 nanoparticles using an acidic deep eutectic solvent, choline chloride/p-toluene sulphonic acid as a templating and hydrolyzing agent via solegel method.
7p viberbers 09-08-2023 6 3 Download
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The kinetics and mechanism of silver(I)-catalyzed oxidation of allyl alcohol with peroxodiphosphate in acetate buffers have been studied. The rate is independent of allyl alcohol concentration. The effect of other reaction parameters such as hydrogen and acetate ions has also been studied. The rate law accounting for all experimental observations corresponds to the proposed mechanism. The energy and entropy of activation have also been evaluated by employing Eyring plots.
12p tudichquannguyet 29-11-2021 11 1 Download
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Cotton Verticillium wilt is one of the most devastating diseases for cotton production in the world. Although this diseases have been widely studied at the molecular level from pathogens, the molecular basis of V. dahliae interacted with cotton has not been well examined.
25p vijeeni2711 24-07-2021 5 0 Download
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Simmondsia chinensis (jojoba) is the only plant known to store wax esters instead of triacylglycerols in its seeds. Wax esters are composed of very-long-chain monounsaturated fatty acids and fatty alcohols and constitute up to 60% of the jojoba seed weight.
13p vijichea2711 28-05-2021 11 1 Download
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Diabetes is a common metabolic disorder characterized by abnormally increased plasma glucose levels. Postprandial hyperglycemia plays an essential role in development of type 2 diabetes. Inhibitors of carbohydrate-hydrolyzing enzymes such as α-amylase retard the liberation of glucose from dietary complex carbohydrates and delay the absorption of glucose. The purpose of the study was to isolate and select α-amylase inhibitor-producing endophytic fungi from wellknown medicinal plants used in the treatment for diabetes and inhabiting in Uzbekistan.
9p angicungduoc6 20-07-2020 9 2 Download
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Thirty nine, out of 46 acid tolerant Lactobacillus spp., isolated from traditional dairy products, fermented foods and human fecal samples, were preliminary identified at genus level as Lactobacillus and evaluated for probiotic properties which included bile tolerance, simulated gastrointestinal juice, cell surface hydrophobicity, cell auto-aggregation, coaggregation and bile salts hydrolase activity.
21p kethamoi6 29-06-2020 20 2 Download
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Chloroplasts have evolved from a cyanobacterial endosymbiont and their continuity has been maintained over time by chloroplast division, a process which is performed by the constriction of a ring-like division complex at the division site.
15p viminato2711 22-05-2020 8 0 Download
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β-D-xylosidase is a vital exoglycosidase with the ability to hydrolyze xylooligosaccharides to xylose and to biotransform some saponins by cleaving outer β-xylose.
11p vihamax2711 21-04-2020 13 0 Download
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The enzyme invertase is produced by Saccharomyces cerevisiae. It hydrolyzes sucrose into glucose and fructose, having a great utility industrially. With this it is necessary to know its main characteristics to be able to know how to optimize it. In this research the enzyme invertase was worked in two types of reactors very common in the industrial area, the batch reactor and the fixed bed reactor. In the experiments described here, the type of reaction involved in hydrolysis, whether exothermic or endothermic, and what is its activation energy was determined.
11p cothumenhmong4 25-03-2020 17 1 Download
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Endophytes are novel sources of natural bioactive compounds. This study seeks endophytes that produce the anticancer enzyme L-asparaginase, to harness their potential for mass production. Four plants with anticancer properties; Cymbopogon citratus, Murraya koenigii, Oldenlandia diffusa and Pereskia bleo, were selected as host plants. L-Asparaginase-producing endophytes were detected by the formation of pink zones on agar, a result of hydrolyzes of asparagine into aspartic acid and ammonia that converts the phenol red dye indicator from yellow (acidic condition) to pink (alkaline condition).
8p trinhthamhodang1 16-11-2019 14 0 Download
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Urease (urea amidohydrolase, EC 3.5.1.5) is a nickel-containing enzyme produced by plants, fungi, and bacteria that catalyzes the hydrolysis of urea into ammonia and carbamate. Urease is of historical importance in Biochemistry as it was the first enzyme ever to be crystallized (1926). Finding nickel in urease’s active site (1975) was the first indication of a biological role for this metal. In this review, historical and structural features, kinetics aspects, activation of the metallocenter and inhibitors of the urea hydrolyzing activity of ureases are discussed.
15p trinhthamhodang1 14-11-2019 30 0 Download
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Urea in diets of ruminants has been investigated to substitute expensive animal and vegetable protein sources for more than a century, and has been widely incorporated in diets of ruminants for many years. Urea is also recycled to the fermentative parts of the gastrointestinal (GI) tracts through saliva or direct secretory flux from blood depending upon the dietary situations. Within the GI tracts, urea is hydrolyzed to ammonia by urease enzymes produced by GI microorganisms and subsequent ammonia utilization serves the synthesis of microbial protein.
12p trinhthamhodang1 14-11-2019 13 0 Download
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A review on the development of urease inhibitors as antimicrobial agents against pathogenic bacteria
Ureases are enzymes that hydrolyze urea into ammonium and carbon dioxide. They have received considerable attention due to their impacts on living organism health, since the urease activity in microorganisms, particularly in bacteria, are potential causes and/or factors contributing to the persistence of some pathogen infections. This review compiles examples of the most potent antiurease organic substances. Emphasis was given to systematic screening studies on the inhibitory activity of rationally designed series of compounds with the corresponding SAR considerations.
32p trinhthamhodang1 14-11-2019 24 1 Download
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The SDS-PAGE results showed that collagen from the skin of this fish consists of α1 and α2 chains with molecular weight (MW) approximately 100 kDa, identified as type I collagen. Hydrolysis of collagen by the other enzymes, such as papain, bromelain, pepsin and alcalase could produce the peptides with MW less than 28 kDa.
10p viathena2711 10-10-2019 11 0 Download
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In plants, pyrophosphate (PPi), generated in a wide range of reversible anabolic reactions, is hydrolyzed by pyrophosphatases. The presence of tonoplast- and Golgi-integral H+-translocating pyrophosphatases in plants led to the conclusion that plant cytosol has no soluble pyrophosphatase activity.
9p vikimsa 22-02-2019 15 0 Download
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Lactobacillus buchneri LB isolated from a commercially fermented vegetable product produced a bacteriocin-designated buchnericin LB. It was found that buchnericin LB was heat-stable (90-121°C for 15 min) and hydrolyzed by proteases, α-chymotrypsin, trypsin, papain, proteinase K and pepsin.
10p caplock2711 19-02-2019 26 0 Download
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Lipases (triacylglycerol acylhydrolases, E.C. 3.1.1.3) are ubiquitous enzymes of consid- erable physiological significance and industrial potential. Lipases catalyze the hydrolysis of triacylglycerols to glycerol and free fatty acids. In contrast to esterases, lipases are activated only when adsorbed to an oil–water interface (Martinelle et al., 1995) and do not hydrolyze dissolved substrates in the bulk fluid. A true lipase will split emulsified esters of glycerine and long-chain fatty acids such as triolein and tripalmitin. Lipases are serine hydrolases.
76p loixinloi 08-05-2013 49 9 Download
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Arecombinant streptococcalC5apeptidasewas expressed in Escherichia coliand its catalytic properties and thermal sta-bility were subjected to examination. It was shown that the NH2 -terminal region ofC5a peptidase (Asn32–Asp79/ Lys90) forms the pro-sequence segment. Upon maturation the propeptide is hydrolyzed either via an autocatalytic intramolecular cleavage or by exogenous protease strepto-pain. At pH 7.4 the enzyme exhibited maximum activity in the narrow range oftemperatures between 40 and 43C....
13p research12 29-04-2013 41 2 Download