Tag: M.W=150-200

Vorobyova, Victoria published the artcileSurface modification of the mild steel by multifunctional self-assembling nanolayers from the natural organic compounds of apricot pomace extract, Quality Control of 124-76-5, the main research area is apricot pomace steel nanolayer moisture.

The apricot pomace extract (APE) is tested as corrosion inhibitor of steel in neutral solution and in conditions of periodic condensation of moisture imitating atm. corrosion of metals via weight loss and electrochem. methods. The highest inhibition efficiency of 96.0% was obtained after about 40 h of exposure to inhibitor-containing electrolyte. The composition of the APE was investigated by using both gas and liquid chromatog.-mass spectrometry (GC-MS, LC-MS) anal. The formation of protecting layer on the mild steel surface was proved by scanning electron microscope (SEM) and at. force microscope results (AFM).

Molecular Crystals and Liquid Crystals published new progress about Apricot. 124-76-5 belongs to class alcohols-buliding-blocks, name is rel-(1R,2R,4R)-1,7,7-Trimethylbicyclo[2.2.1]heptan-2-ol, and the molecular formula is C10H18O, Quality Control of 124-76-5.

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Akermi, Sarra published the artcileNeuroprotective effect of the essential oil of Lavandula officinalis against hydrogen peroxide-induced toxicity in mice, Product Details of C10H18O, the main research area is essential oil hydrogen peroxide Lavandula officinalis neuroprotective effect toxicity.

Brain is the main organ that manages all other organs and has significant oxygen requirements, which makes it vulnerable to reactive oxygen species, thus causing different neurol. disorders. The aim of this work is the evaluation of Lavandula officinalis essential oil neuroprotective effect against hydrogen peroxide (HP)-induced toxicity in mice. Essential oil was extracted by hydrodistillation using a Clevenger-type apparatus Essential oil anal. is performed using gas chromatog.-mass spectrometry (GC-MS). Biol. activity evaluation carried out the ferric reducing antioxidant power test, DNA (DNA) fragmentation assay, the histopathol. study of the brain, and determination of antioxidant enzyme activities. Chem. characterization of essential oil using GC-MS identified 47 compounds, accounting for almost 80% of the total oil and indicates the occurrence of monoterpenes and sesquiterpenes. The identified major compounds are pentanone (16.55%), propanal (15.89%), Me Et ketone (13.51%), naphthalene (10.81%), terpinen-4-ol (6.55%), cyclopentanecarboxylic acid (4.77%), and isoborneol (2.27%). This study allowed us to investigate the effects of HP on brain function in Mus musculus adult mice by assessing DNA degradation, cell morphol., oxidative balance and brain weight variation. Furthermore, we have highlighted the beneficial effects of L. officinalis essential oil, which could significantly counteract all these alterations by its active compounds, which are endowed with potent biol. activities. We can conclude that HP-induced damage in histomorphol. changes in mice brain, significant atrophy, as well as an important alteration of the genetic expression.

Pharmacognosy Magazine published new progress about Atrophy. 124-76-5 belongs to class alcohols-buliding-blocks, name is rel-(1R,2R,4R)-1,7,7-Trimethylbicyclo[2.2.1]heptan-2-ol, and the molecular formula is C10H18O, Product Details of C10H18O.

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Bakhshy, Ehsan published the artcileIsolation, qualitative and quantitative evaluation of galactomannan during germination of Trigonella persica (Fabaceae) seed, Product Details of C6H12O6, the main research area is Trigonella endosperm seed germination galactomannan; Galactomannan; Physicochemical properties; Seed germination.

Galactomannan extracted from Trigonella persica endosperm like to other galactomannans is useful in the medicine and pharmaceutical industry such as drug delivery due to its unique physicochem. properties. As soon as germination takes place, the hydrolysis of galactomannan begins and its structure changes. Evaluation of galactomannan content extracted from the germinating seeds (GEGS) and the non-germinated seeds (GENGS) showed that the amount of galactomannan was highest at 24 h after imbibition and was completely consumed approx. 48 h after imbibition. It seems that galactomannan is used for storage reserve synthesis in the cotyledon during germination. Based on the quant. assessment, FT-IR, macroscopic and microscopic observations, galactomannan of T. persica seeds have high an M/G ratio (approx. 5:1) and this ratio does not alter during germination. Therefore, changes in galactomannan structure (functional group and band) caused that GEGS have different physicochem. properties than GENGS. Based on the results, GENGS with a high M/G ratio may be suitable for drug delivery system due to some properties such as high viscosity and gelling.

International Journal of Biological Macromolecules published new progress about Aleuron. 59-23-4 belongs to class alcohols-buliding-blocks, name is (2R,3S,4S,5R)-2,3,4,5,6-Pentahydroxyhexanal, and the molecular formula is C6H12O6, Product Details of C6H12O6.

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Gao, Pinyi published the artcileStructural features, selenization modification, antioxidant and anti-tumor effects of polysaccharides from alfalfa roots, Name: (2R,3S,4S,5R)-2,3,4,5,6-Pentahydroxyhexanal, the main research area is Medicago root polysaccharide antioxidant selenization antitumor; Alfalfa polysaccharides; Anti-tumor activities; Antioxidant activities; Chemical structures; Selenization.

Hot water extraction and chromatog. purification methods were used to extract and purify two polysaccharides (RAPS-1 and RAPS-2) from the roots of alfalfa. Subsequently, RAPS-2 was modified using the HNO3/Na2SeO3 method to obtain Se-RAPS-2. The structural features, antioxidant and in vitro anti-tumor activities of the three polysaccharides were evaluated. The structural anal. revealed that RAPS-1 (Mw = 10.0 kDa) was composed of rhamnose, xylose, arabinose, galacturonic acid, mannose and glucose, whereas RAPS-2 (Mw = 15.8 kDa) consisted of rhamnose, xylose, galacturonic acid, mannose, glucose and galactose. RAPS-1 contained 1 → 2, 1 → 4, 1 → 3, and 1 → 6 or 1 → glycosidic bonds; however, while RAPS-2 lacked 1 → 4 glycosidic linkages. The mol. weight of Se-RAPS-2 was 11.0 kDa less than that of RAPS-2. The results of activities demonstrated that Se-RAPS-2 displayed superior antioxidant activity and inhibitory effect in HepG2 cells than RAPS-1 and RAPS-2.

International Journal of Biological Macromolecules published new progress about Alfalfa. 59-23-4 belongs to class alcohols-buliding-blocks, name is (2R,3S,4S,5R)-2,3,4,5,6-Pentahydroxyhexanal, and the molecular formula is C6H12O6, Name: (2R,3S,4S,5R)-2,3,4,5,6-Pentahydroxyhexanal.

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Shang, Hongmei published the artcileEffects of different extraction methods on the properties and activities of polysaccharides from Medicago sativa L. and extraction condition optimization using response surface methodology, Recommanded Product: (2R,3S,4S,5R)-2,3,4,5,6-Pentahydroxyhexanal, the main research area is Medicago polysaccharide extraction response surface methodol.

Polysaccharides from alfalfa (Medicago sativa L., MSPs) were extracted by four different methods: hot-water extraction (HWE), ultrasonic-assisted extraction (UAE), enzyme-assisted extraction (EAE) and ultrasonic-enzyme-assisted extraction (UEAE). The exptl. results showed that the monosaccharide compositions of the four MSPs extracted by the different extraction methods were the same, but the monosaccharide proportions were different. MSPs extracted by the UEAE method possessed the largest extraction yield, the highest uronic acid content and the best antioxidant activities among the four MSPs analyzed. Addnl., the Plackett-Burman design (PBD) and response surface methodol. (RSM) were used to determine the optimum UEAE conditions for extracting MSPs, revealing optimal conditions at a pH of 5.7, a 58 min enzymolysis time, a 40 °C enzymolysis temperature and a 41 °C ultrasonic temperature; an MSPs yield of 12.95% was obtained under these extraction conditions.

Process Biochemistry (Oxford, United Kingdom) published new progress about Alfalfa. 59-23-4 belongs to class alcohols-buliding-blocks, name is (2R,3S,4S,5R)-2,3,4,5,6-Pentahydroxyhexanal, and the molecular formula is C6H12O6, Recommanded Product: (2R,3S,4S,5R)-2,3,4,5,6-Pentahydroxyhexanal.

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Wu, Hongyan published the artcileExtraction optimization, physicochemical properties and antioxidant and hypoglycemic activities of polysaccharides from roxburgh rose (Rosa roxburghii Tratt.) leaves, Formula: C6H12O6, the main research area is Rosa polysaccharide antioxidant physicochem property hypoglycemia; Biological activity; Extraction and purification; Polysaccharides from Rosa roxburghii Tratt. leaves.

The optimum extraction conditions of polysaccharides from roxburgh rose (Rosa roxburghii Tratt.) leaves (RLP) were obtained by response surface methodol. (RSM), which were a liquid to solid ratio of 21.16 mL/g, an extraction temperature of 81.32°C, and an extraction time of 90.49 min. An RLP yield of 11.04% was obtained under these conditions. DEAE-52 cellulose and Sepharose CL-6B columns were used to purify the RLP, and the purified polysaccharide components RLP-1.2 and RLP-2.1 were obtained. Both RLP-1.2 and RLP-2.1 were composed of galacturonic acid (GalA), glucose (Glc), galactose (Gal), and arabinose (Ara). However, the molar ratios of GalA, Glc, Gal, and Ara in RLP-1.2 and RLP-2.1 were different. At a concentration of 10 mg/mL, the α-amylase inhibitory activities of RLP-1.2 and RLP-2.1 reached 80.74% and 89.85% that of acarbose, resp., and the α-glucosidase inhibitory activity of RLP-1.2 reached 87.91% that of acarbose. In addition, both RLP-1.2 and RLP-2.1 showed good antioxidant activity. These results suggested that RLP-1.2 and RLP-2.1 possess potential as natural hypoglycemic agents or natural antioxidants.

International Journal of Biological Macromolecules published new progress about Alfalfa. 59-23-4 belongs to class alcohols-buliding-blocks, name is (2R,3S,4S,5R)-2,3,4,5,6-Pentahydroxyhexanal, and the molecular formula is C6H12O6, Formula: C6H12O6.

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Liu, Xuegui published the artcileStructural characteristics of Medicago Sativa L. Polysaccharides and Se-modified polysaccharides as well as their antioxidant and neuroprotective activities, Application In Synthesis of 59-23-4, the main research area is Medicago selenium polysaccharide structure antioxidant neuroprotective activity; Antioxidant activity; Neuroprotective activity; Selenium polysaccharide.

Medicago Sativa L., a nutrient-rich plant used as feed for cattle and sheep, is widely planted globally. This study investigated the structural characteristics and activities of three kinds of novel polysaccharides (APS1, APS2 and APS3) isolated from the stems of M. sativa as well as its two selenium modified products (Se-APS2 and Se-APS3). APS1 (Mw = 13.4 KDa) and APS2 (Mw = 11.2 KDa) were composed of rhamnose, arabinose, mannose and galactose with different molar ratio, APS3 (Mw = 18.6 KDa) was composed of rhamnose, arabinose, fructose, mannose and galactose. All APS1-3 contained 1 → 3 : 1 → 6 : 1 → 4 : 1 → 2 glycosidic bonds in a ratio of 0.74:0.09:0.05:0.12, 0.34:0.20:0.36:0.10 and 0.63:0.17:0.06:0.14, resp. The selenium content of Se-APS2 (Mw = 9.0 KDa) and Se-APS3 (Mw = 10.2 KDa) were 1.05 and 2.57μg/mg, resp. Their surface morphol. and thermal stability were determined by scanning electron microscope (SEM) and thermal anal. (TGA), resp. Further, the antioxidant and neuroprotective activities of the three natural polysaccharides and two Se-polysaccharides were studied. Interestingly, Se-polysaccharides not only exhibited higher antioxidant activity, but also higher neuroprotective activity compared to natural polysaccharides.

International Journal of Biological Macromolecules published new progress about Alfalfa. 59-23-4 belongs to class alcohols-buliding-blocks, name is (2R,3S,4S,5R)-2,3,4,5,6-Pentahydroxyhexanal, and the molecular formula is C6H12O6, Application In Synthesis of 59-23-4.

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Zhang, Chen published the artcileExtract methods, molecular characteristics, and bioactivities of polysaccharide from alfalfa (Medicago sativa L.), Quality Control of 59-23-4, the main research area is Medicago polysaccharide bioactivity; compositions; glycosidic linkage; immunomodulation; molecular weight; polysaccharide.

The polysaccharide isolated from alfalfa was considered to be a kind of macromol. with some biol. activities; however, its mol. structure and effects on immune cells are still unclear. The objectives of this study were to explore the extraction and purifying methods of alfalfa (Medicago sativa L.) polysaccharide (APS) and decipher its composition and mol. characteristics, as well as its activation to lymphocytes. The crude polysaccharides isolated from alfalfa by water extraction and alc. precipitation methods were purified by semipermeable membrane dialysis. Five batches of alfalfa samples were obtained from five farms (one composite sample per farm) and three replicates were conducted for each sample in determination The results from ion chromatog. (IC) anal. showed that the APS was composed of fucose, arabinose, galactose, glucose, xylose, mannose, galactose, galacturonic acid (GalA), and glucuronic acid (GlcA) with a molar ratio of 2.6:8.0:4.7:21.3:3.2:1.0:74.2:14.9. The weight-average mol. weight (Mw), number-average mol. weight (Mn), and Z-average mol. weight (Mz) of APS were calculated to be 3.30 × 106, 4.06 × 105, and 1.43 × 108 g/mol, resp., according to the anal. by gel permeation chromatog.-refractive index-multiangle laser light scattering (GPC-RI-MALS). The findings of electron ionization mass spectrometry (EI-MS) suggest that APS consists of seven linkage residues, namely 1,5-Araf, galactose (T-D-Glc), glucose (T-D-Gal), 1,4-Gal-Ac, 1,4-Glc, 1,6-Gal, and 1,3,4-GalA, with molar proportions of 10.30%, 4.02%, 10.28%, 52.29%, 17.02%, 3.52%, and 2.57%, resp. Addnl., APS markedly increased B-cell proliferation and IgM secretion in a dose- and time-dependent manner but not the proliferation and cytokine (IL-2, -4, and IFN-γ) expression of T cells. Taken together, the present results suggest that APS are macromol. polymers with a molar mass (indicated by Mw) of 3.3 × 106 g/mol and may be a potential candidate as an immunopotentiating pharmaceutical agent or functional food.

Nutrients published new progress about Alfalfa. 59-23-4 belongs to class alcohols-buliding-blocks, name is (2R,3S,4S,5R)-2,3,4,5,6-Pentahydroxyhexanal, and the molecular formula is C6H12O6, Quality Control of 59-23-4.

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Zheng, Huidong published the artcileThe influence of solvent polarity on the dehydrogenation of isoborneol over a Cu/ZnO/Al2O3 catalyst, Safety of rel-(1R,2R,4R)-1,7,7-Trimethylbicyclo[2.2.1]heptan-2-ol, the main research area is solvent polarity dehydrogenation isoborneol.

Several Cu/ZnO/Al2O3 catalysts with high Cu and ZnO contents were used to study the influence of solvent polarity on the dehydrogenation and dehydration of isoborneol. The employment of a polar solvent enhanced the activity for the main dehydrogenation reaction, while the use of a non-polar solvent favored the dehydration side-reaction. Different techniques were employed to characterize the fresh, treated, and spent catalysts. X-ray powder diffraction (x-ray diffraction) showed that the copper was in metallic form and zinc in oxide form, transmission electron microscope (TEM) showed differences in catalyst morphol. that depended on the polarity of the solvent used, N2O titration gave the Cu active site d., and temperature-programmed desorption of NH3 (NH3-TPD) provided the acidity of the materials. In non-polar solvents the copper nanoparticles were sintered and this may were due to the enhanced activity of adventitious water in those solvents or simply because of interactions between the solvents and the copper and zinc oxide components. The sintering resulted in a decrease in the number of active sites and an increase in acidic sites, which enhanced the undesired dehydration reaction. Based on the results of inductively coupled plasma (ICP) and TEM, a model of the catalyst was proposed to illustrate the effect of solvent polarity on the dehydrogenation of isoborneol.

Catalysis Today published new progress about Acidity. 124-76-5 belongs to class alcohols-buliding-blocks, name is rel-(1R,2R,4R)-1,7,7-Trimethylbicyclo[2.2.1]heptan-2-ol, and the molecular formula is C10H18O, Safety of rel-(1R,2R,4R)-1,7,7-Trimethylbicyclo[2.2.1]heptan-2-ol.

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Padmanabhan, Aparna published the artcileStructural characterization of exopolysaccharide from Streptococcus thermophilus ASCC 1275, Application of (2R,3S,4S,5R)-2,3,4,5,6-Pentahydroxyhexanal, the main research area is Streptococcus exopolysaccharide purification dialysis; exopolysaccharide; glycosyl linkage; nuclear magnetic resonance (NMR); structure.

In this study, we purified and characterized exopolysaccharide (EPS) produced by a high-EPS-producing dairy starter bacterium, Streptococcus thermophilus ASCC 1275. Crude EPS was extracted from S. thermophilus ASCC 1275 and partially purified using dialysis. Further purification and fractionation of exopolysaccharide was conducted using HPLC on a Superose 6 column (Cytiva/Global Life Sciences Solutions, Marlborough, MA). Glycosyl composition anal., linkage anal. along with 1-dimensional and 2-dimensional NMR spectroscopy were performed to deduce the structure of EPS. Three fractions (F) obtained from gel permeation chromatog. were termed F1 (2.6%), F2 (45.8%), and F3 (51.6%) with average mol. weights of approx. 511, 40, and 5 kDa, resp. Monosaccharide composition anal. revealed the dominance of glucose, galactose, and mannose in all 3 fractions. Major linkages observed in F3 were terminal galactopyranosyl (t-Gal), 3-linked glucopyranosyl (3-Glc), 3-linked galactofuranosyl (3-Galf), and 3,6-linked glucopyranosyl (3,6-Glc) and major linkages present in F2 were 4-Glc (48 mol%), followed by terminal mannopyranosyl (t-Man), 2- + 3-linked mannopyranosyl (2-Man+3-Man), and 2,6-linked mannopyranosyl (2,6-Man; total ∼28 mol%). The 1-dimensional and 2-dimensional NMR spectroscopy revealed that F2 comprised mannans linked by (1→2) linkages and F3 consisted of linear chains of α-D-glucopyranosyl (α-D-Glcp), β-D-glucopyranosyl (β-D-Glcp), and β-D-galactofuranosyl (β-D-Galf) connected by (1→3) linkages; branching was through (1→6) linkage in F3. A possible structure of EPS in F2 and F3 was proposed.

Journal of Dairy Science published new progress about Dialysis. 59-23-4 belongs to class alcohols-buliding-blocks, name is (2R,3S,4S,5R)-2,3,4,5,6-Pentahydroxyhexanal, and the molecular formula is C6H12O6, Application of (2R,3S,4S,5R)-2,3,4,5,6-Pentahydroxyhexanal.

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts