Author: tianli

Zeng, Fanke; Chen, Wenbo; He, Ping; Zhan, Qiping; Wang, Qian; Wu, Hui; Zhang, Mengmeng published the artcile< Structural characterization of polysaccharides with potential antioxidant and immunomodulatory activities from chinese water chestnut peels>, Product Details of C6H12O6, the main research area is Eleocharis polysaccharide antioxidant immunomodulation; Antioxidant activity; Chinese water chestnut peels; Immunomodulatory activity; Polysaccharides; Structural features.

Chinese water chestnut peels are a kind of vegetable processing waste containing many active components such as polysaccharides, the structure of which remains unknown. To elucidate the structure of polysaccharides from Chinese water chestnut peels, two polysaccharides named WVP-1 and WVP-2 were isolated. WVP-1 (3.16 kDa) consisted of mannose (1.75%), glucose (84.69%), galactose (6.32%), and arabinose (7.24%), while WVP-2 (56.97 kDa) was composed of mannose (3.18%), rhamnose (1.52%), glucuronic acid (1.42%), galacturonic acid (4.83%), glucose (11.51%), galactose (36.02%), and arabinose (41.53%). Linkage and NMR data indicated that WVP-1 was composed mainly of →4)-α-D-Glcp(1→ and a certain proportion of →3)-β-D-Glcp-(1→, including linear and branched polysaccharides simultaneously. WVP-2 was a pectin-like polysaccharide with →4)-α-D-GalpA6Me-(1→ units and the branch points of →3,4)-α-L-Arap-(1→, →3,6)-β-D-Galp-(1→. WVP-2 exhibited stronger potential antioxidant and immunomodulatory activities than WVP-1 in vitro. These results provide a foundation for the further study of polysaccharides from Chinese water chestnut peels.

Carbohydrate Polymers published new progress about Antioxidants. 3458-28-4 belongs to class alcohols-buliding-blocks, and the molecular formula is C6H12O6, Product Details of C6H12O6.

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Gholinejad, Mohammad; Naghshbandi, Zhwan; Sansano, Jose M. published the artcile< Co/Cu bimetallic ZIF as New heterogeneous catalyst for reduction of nitroarenes and dyes>, Electric Literature of 5344-90-1, the main research area is cobalt copper bimetallic ZIF catalyst reduction dye nitroarene aminoarene.

Nowadays one of the great challenges is to design new bimetallic catalysts with enhanced catalytic activity, selectivity and recycling properties. In this work, the preparation of new Co/Cu bimetallic Zeolitic Imidazolate Framework (Co-Cu/ZIF) as an efficient catalyst for the reduction of nitro compounds and organic dyes is described. Co-Cu/ZIF was characterized with different techniques such as SEM, TEM, XRD, XPS, TGA, FT-IR and UV-vis absorption indicating formation of entirely uniform cubic particles. Using this catalyst, structurally different aromatic nitro compounds were reduced efficiently to corresponding amines in excellent yields. Kinetic studies revealed that the reduction rates of nitrophenol isomers follow 3-NP > 4-NP > 2-NP order. The catalytic activity of Co-Cu/ZIF was further investigated in the reduction of organic dyes such as methyl orange (MO) and rhodamine B (RhB). This catalyst was recycled for at least ten runs in the reduction of 4-nitrophenol without a noticeable decrease in activity and reused catalyst was characterized.

Applied Organometallic Chemistry published new progress about Aromatic amines Role: SPN (Synthetic Preparation), PREP (Preparation). 5344-90-1 belongs to class alcohols-buliding-blocks, and the molecular formula is C7H9NO, Electric Literature of 5344-90-1.

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Wang, Hui; Ramnani, Pankaj; Pham, Tung; Villarreal, Claudia Chaves; Yu, Xuejun; Liu, Gang; Mulchandani, Ashok published the artcile< Gas biosensor arrays based on single-stranded DNA-functionalized single-walled carbon nanotubes for the detection of volatile organic compound biomarkers released by huanglongbing disease-infected citrus trees>, Computed Properties of 104-76-7, the main research area is single stranded DNA SWCNT VOC biomarker huanglongbing disease; FET; HLB; SWNT; gas sensor; ssDNA; volatile organic compounds.

Volatile organic compounds (VOCs) released by plants are closely associated with plant metabolism and can serve as biomarkers for disease diagnosis. Huanglongbing (HLB), also known as citrus greening or yellow shoot disease, is a lethal threat to the multi-billion-dollar citrus industry. Early detection of HLB is vital for removal of susceptible citrus trees and containment of the disease. Gas sensors are applied to monitor the air quality or toxic gases owing to their low-cost fabrication, smooth operation, and possible miniaturization. Here, we report on the development, characterization, and application of elec. biosensor arrays based on single-walled carbon nanotubes (SWNTs) decorated with single-stranded DNA (ssDNA) for the detection of four VOCs-ethylhexanol, linalool, tetradecene, and phenylacetaldehyde-that serve as secondary biomarkers for detection of infected citrus trees during the asymptomatic stage. SWNTs were noncovalently functionalized with ssDNA using π-π interaction between the nucleotide and sidewall of SWNTs. The resulting ssDNA-SWNT hybrid structure and device properties were investigated using Raman spectroscopy, UV spectroscopy, and elec. measurements. To monitor changes in the four VOCs, gas biosensor arrays consisting of bare SWNTs before and after being decorated with different ssDNA were employed to determine the different concentrations of the four VOCs. The data was processed using principal component anal. (PCA) and neural net fitting (NNF).

Sensors published new progress about Biomarkers. 104-76-7 belongs to class alcohols-buliding-blocks, and the molecular formula is C8H18O, Computed Properties of 104-76-7.

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Salarbashi, Davoud; Bazeli, Javad; Fahmideh-Rad, Elham published the artcile< Fenugreek seed gum: Biological properties, chemical modifications, and structural analysis- A review>, Application In Synthesis of 3458-28-4, the main research area is review Fenugreek seed gum physicochem functional property; Fenugreek seed gum; Functional properties; Physico-chemical properties.

A review. Fenugreek is a leguminous plant belongs to the family Fabaceae, which is extensively cultivated as a semiarid crop in Northern Africa, the Mediterranean, India, and Canada. In the present review paper, first we summarized the extraction, purification, chem. composition, mol. structure, and rheol. behavior of the mucilages isolated from Fenugreek seeds (FSG), and then their functional properties presented to elucidate the potential application of this traditional source of hydrocolloids in food, pharmaceutical, and other industries. To date, there is no technique that can successfully remove the attached protein from FSG. From a structural point of view, galactose and mannose are the most abundant polysaccharide in FSG composition, suggesting a galactomannan-like structure. FSG is the most soluble of the seed gums. FSG solutions at various temperatures and concentrations showed a time-dependent shear thinning behavior. Furthermore, these hydrocolloids can be employed for the fabrication of eco-friendly packaging systems. Antioxidant capacity and anti-fungi activity of FSG has been proved in different studies. In conclusion, industrial applications of FSG are possible due to its strong thickening properties. Addnl., FSG has an excellent emulsification capacity, which enables its application in the food, cosmetic and/or pharmaceutical industries.

International Journal of Biological Macromolecules published new progress about Antioxidants. 3458-28-4 belongs to class alcohols-buliding-blocks, and the molecular formula is C6H12O6, Application In Synthesis of 3458-28-4.

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Abraham, Raymond J.; Cooper, M. Ashley; Reid, Matthew published the artcile< The use of MM/QM calculations of 13C chemical shifts in the conformational analysis of some monosaccharides and sucrose>, Formula: C6H12O6, the main research area is MM QM conformational monosaccharide sucrose crystal structure.

The 13C NMR chem. shifts of some common pyranose monosaccharides in D2O solution were predicted using a combined mol. mechanics (Pcmod 9.1/MMFF94) and ab initio (GIAO (B3LYP/DFT, 6-31G(d))) model. This method has been successfully used for a range of organic mols. in CDCl3 solution but has not previously been used for aqueous solutions The method gave such good agreement with experiment that the populations of the conformers at C6 of the monosaccharides could be obtained. This has been attempted previously by various methods with diverse results. In all the compounds studied the α and β anomers have similar populations. In glucose the populations of the GG and GT conformers are ca equal with TG a minor component, in galactose GT has the largest population and GG the smallest, in mannose GG is preferred with TG a minor component and in talose GT and TG are favored with GG a minor constituent. The results are in general agreement with previous work. To our knowledge this is the first time that 13C shifts have been used to determine sugar conformations in solution The conformation of sucrose in D2O solution was examined by both 1H and 13C NMR. The complete anal. of the 1H NMR spectrum has been achieved and provides information on the preferred conformations of the CH2OH fragments at G6 (GG) and F6 (GG, GT). Calculations of the 13C shifts confirm these results and show also that the conformation at F1 is mainly GG plus TG. The sucrose conformational profile in solution includes the crystal structure together with the above conformations at F1 and F6.

New Journal of Chemistry published new progress about Ab initio methods. 492-62-6 belongs to class alcohols-buliding-blocks, and the molecular formula is C6H12O6, Formula: C6H12O6.

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Pastor, Raul Francisco; Restani, Patrizia; Di Lorenzo, Chiara; Orgiu, Francesca; Teissedre, Pierre-Louis; Stockley, Creina; Ruf, Jean Claude; Quini, Claudia Ines; Garcia Tejedor, Nuria; Gargantini, Raquel; Aruani, Carla; Prieto, Sebastian; Murgo, Marcelo; Videla, Rodolfo; Penissi, Alicia; Iermoli, Roberto Hector published the artcile< Resveratrol, human health and winemaking perspectives>, Reference of 501-36-0 , the main research area is review resveratrol wine; Resveratrol; oxidative stress; wine and health; winemaking.

A review. Resveratrol, (3, 5, 4′-trihydroxystilbene) is a non-flavonoid polyphenol stilbene synthesized by plants when damaged by infectious diseases or ionizing radiation. Although present in more than seventy plant species, grapes and wine are the major dietary contributors of resveratrol, responsible for 98% of the daily intake. In 1992, Renaud and De Lorgeril first linked wine polyphenols, including resveratrol, to the potential health benefits ascribed to regular and moderate wine consumption (the so called “”French Paradox””). Since then, resveratrol has received increasing scientific interest, leading to research on its biol. actions, and to a large number of published papers, which have been collected and discussed in this review. The relatively low amounts of resveratrol measured in wine following moderate consumption, however, may be insufficient to mitigate biol. damage, such as that due to oxidative stress. On this basis, the authors also highlight the importance of viticulture and the winemaking process to enhance resveratrol concentrations in wine in order to bolster potential health benefits.

Critical Reviews in Food Science and Nutrition published new progress about Homo sapiens. 501-36-0 belongs to class alcohols-buliding-blocks, and the molecular formula is C14H12O3, Reference of 501-36-0 .

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Qu, Peiyuan; Kuepfert, Michael; Jockusch, Steffen; Weck, Marcus published the artcile< Compartmentalized Nanoreactors for One-Pot Redox-Driven Transformations>, Product Details of C8H9FO, the main research area is micellar compartmentalized nanoreactor catalyst preparation redox deracemization secondary alc; polyoxazoline synthesis nanoreactor.

This contribution introduces poly(2-oxazoline)-based shell cross-linked micelles (SCMs) as nanoreactors to realize one-pot redox-driven deracemizations of secondary alcs. in aqueous media. TEMPO and Rh-TsDPEN moieties are spatially positioned into the hydrophilic corona and the hydrophobic micelle core, resp. TEMPO catalyzes the oxidation of racemic secondary alcs. into ketones, while Rh-TsDPEN catalyzes the asym. transfer hydrogenation (ATH) of these ketones to afford enantioenriched secondary alcs. Both catalysts, the Rh-TsDPEN complex and TEMPO, are incompatible with each other and the SCMs are designed to provide indispensable catalyst site isolation. Kinetic studies show that the SCMs enhance the reactivity of the immobilized catalysts, in comparison to those for the unsupported analogs under the same reaction conditions. Our nanoreactors can perform deracemizations on a broad range of secondary alc. substrates and are reusable in a continuous manner while maintaining high activity.

ACS Catalysis published new progress about ESR (electron spin resonance). 403-41-8 belongs to class alcohols-buliding-blocks, and the molecular formula is C8H9FO, Product Details of C8H9FO.

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Coll Araoz, M. V.; Jacobi, V. G.; Fernandez, P. C.; Luft Albarracin, E.; Virla, E. G.; Hill, J. G.; Catalan, C. A. N. published the artcile< Volatiles mediate host-selection in the corn hoppers Dalbulus maidis (Hemiptera: Cicadellidae) and Peregrinus maidis (Hemiptera: Delphacidae)>, Computed Properties of 78-70-6, the main research area is volatile organic compound Dalbulus Peregrinus; Auchenorrhyncha; leafhopper; olfactometry; planthopper; volatile organic compounds.

Volatile organic compounds (VOCs) released by plants are generally involved in host recognition and host selection for many phytophagous insects. However, for leafhoppers and planthoppers, host recognition is mainly thought to involve a phototactic response, but it is not clear if a host plant could be selected based on the volatile cues it emits. In this study we evaluated olfactory responses in dual choice tests of two Hemiptera species, Dalbulus maidis (De Long) (Cicadellidae) and Peregrinus maidis (Ashmead) (Delphacidae), vectors of maize-stunting diseases, to three maize (Zea mays L.) germplasms, a temperate and a tropical hybrid and a landrace. VOCs emitted by the germplasms were collected and identified using gas chromatog.-mass spectrometry. The temperate hybrid released significantly more VOCs than the tropical hybrid and the landrace, and its volatile profile was dominated by (±)-linalool. D. maidis preferred odours emitted from the temperate hybrid, whereas P. maidis preferred odours from the tropical hybrid and the landrace over the temperate one. In order to test if linalool plays a role in the behavioral responses, we assayed this compound in combination with the tropical hybrid, to provide other contextual olfactory cues. D. maidis was attracted to the tropical hybrid plus a 0.0001% linalool solution, indicating that this compound could be part of a blend of attractants. Whereas addition of linalool resulted in a slight, though not significant, reduction in host VOC attractiveness for P. maidis. Both hopper species responded to olfactory cues in the absence of supplementary visual cues.

Bulletin of Entomological Research published new progress about Behavior. 78-70-6 belongs to class alcohols-buliding-blocks, and the molecular formula is C10H18O, Computed Properties of 78-70-6.

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Wang, Youchao; Tian, Nana; Li, Chao; Hou, Yuanjun; Wang, Xuesong; Zhou, Qianxiong published the artcile< Incorporation of 7-dehydrocholesterol into liposomes as a simple, universal and efficient way to enhance anticancer activity by combining PDT and photoactivated chemotherapy>, Application In Synthesis of 434-16-2, the main research area is tumor antitumor photodynamic therapy dehydrocholesterol liposome.

Cholesterol (CHOL) is an indispensable component of liposomes. Incorporation of 7-dehydrocholesterol (7-DHC) instead of CHOL can efficiently enhance the anticancer activity of photosensitizer-encapsulated liposomes upon irradiation, yielding an IC50 value about half of that of CHOL-based controls. The photo-oxidation of 7-DHC into its endoperoxide form by singlet oxygen may account for the enhanced therapeutic effect, realizing an efficient combination of photodynamic therapy (PDT) and photoactivated chemotherapy.

Chemical Communications (Cambridge, United Kingdom) published new progress about Antitumor agents. 434-16-2 belongs to class alcohols-buliding-blocks, and the molecular formula is C27H44O, Application In Synthesis of 434-16-2.

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Porter, Ashlin G.; Hu, Hanfeng; Liu, Xuemei; Raghavan, Adharsh; Adhikari, Sarju; Hall, Derrick R.; Thompson, Dylan J.; Liu, Bin; Xia, Yu; Ren, Tong published the artcile< Heptamolybdate: a highly active sulfide oxygenation catalyst>, Application In Synthesis of 699-12-7, the main research area is crystal structure heptamolybdate preparation sulfide oxidation catalyst kinetics sulfone.

The sulfide oxygenation activities of both heptamolybdate ([Mo7O24]6-, [1]6-) and its peroxo adduct [Mo7O22(O2)2]6- ([2]6-) were examined in this contribution. [Mo7O22(O2)2]6- was prepared in a yield of 65% from (NH4)6[Mo7O24] (1a) upon treatment of 10 equiv of H2O2 and structurally identified through single crystal x-ray diffraction study. (Bu4N)6[Mo7O22(O2)2] (2b) is an efficient catalyst for the sequential oxygenation of Me Ph sulfide (MPS) by H2O2 to the corresponding sulfoxide and subsequently sulfone with a 100% utility of H2O2. Surprisingly, (Bu4N)6[Mo7O24] (1b) is a significantly faster catalyst than 2b for MPS oxygenation under identical conditions. The pseudo-first order kcat constants from initial rate kinetics are 54 M-1 s-1 and 19 M-1 s-1 for 1b and 2b, resp. Electrospray ionization mass spectrometry (ESI-MS) study of 1b under the catalytic reaction conditions revealed that [Mo2O11]2- is likely the main active species in sulfide oxygenation by H2O2.

Dalton Transactions published new progress about Crystal structure. 699-12-7 belongs to class alcohols-buliding-blocks, and the molecular formula is C8H10OS, Application In Synthesis of 699-12-7.

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts