Tag: M.W=150-200

Wei, Wei; Zhang, Yu-Ting; Wang, Chen; Guo, Wenshan; Ngo, Huu Hao; Chen, Xueming; Ni, Bing-Jie published the artcile< Responses of anaerobic hydrogen-producing granules to acute microplastics exposure during biological hydrogen production from wastewater>, Safety of (2S,3R,4S,5S,6R)-6-(Hydroxymethyl)tetrahydro-2H-pyran-2,3,4,5-tetraol, the main research area is AHPG microplastics wastewater biol hydrogen production; Anaerobic hydrogen-producing granule; Extracellular polymeric substance; Microplastics; Toxicity; Wastewater.

Anaerobic hydrogen-producing granule (AHPG) has been successfully applied in hydrogen production from wastewater. While various types of microplastics in large amounts are readily detected in both municipal and industrial wastewaters, however, to date the response of AHPG to multiple coexisting microplastics in wastewater is unknown yet. Herein, this study provided a first insight into the acute exposure-response relationship between multiple coexisting microplastics and the AHPG during biol. hydrogen production from wastewater. Fluorescence tagging found that many microplastics accumulated and covered on the surface of the whole granule. Morphol. and particle size of microplastics-bearing AHPG were characterized by microscopic observation, showing that the shock load of microplastics in the wastewater at the studied concentrations (40 and 80 mg/L) made the granule loose and even break down with the decreased particle size. The visualization of extracellular polymeric substances (EPS) structure revealed that microplastics decreased EPS production by 8.8-16.7%. Microbial community anal. demonstrated that the acute exposure of microplastics did not drive the change in the microbial community diversity and composition However, toxic leachates and upgraded oxidative stress induced by microplastics increased cell death up to 14.7% and decreased hydrogen production by 18.7%, when the AHPG exposed to 80 mg/L of microplastics. This work gained a new insight into the response of anaerobic microorganisms to coexisting microplastics in the real environment.

Water Research published new progress about Acidobacteria. 492-62-6 belongs to class alcohols-buliding-blocks, and the molecular formula is C6H12O6, Safety of (2S,3R,4S,5S,6R)-6-(Hydroxymethyl)tetrahydro-2H-pyran-2,3,4,5-tetraol.

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Shan, Shan; Xiong, Yi; Guo, Jianguo; Liu, Mengyao; Gao, Xin; Fu, Xinjing; Zeng, Deyong; Song, Chen; Zhang, Yingchun; Cheng, Dayodu; Lu, Weihong published the artcile< Effect of an inulin-type fructan from Platycodon grandiflorum on the intestinal microbiota in rats exposed to PM2.5>, Name: (2S,3R,4S,5S,6R)-6-(Hydroxymethyl)tetrahydro-2H-pyran-2,3,4,5-tetraol, the main research area is Platycodon fructan gastroprotectant polysaccharide intestinal microbiota PM25 exposure; Intestinal microbiota; Inulin-type fructan; PM2.5; Platycodon grandiflorum.

In this study, an inulin-type fructan (PGPI-1-a) was isolated from the roots of Platycodon grandiflorum. PGPI-1-a was composed of (2 → 1)-linked β-D-fructofuranose (Fruf) and a terminal α-D-glucopyranose (Glcp) with a mol. weight of 12.1 kDa. PM2.5 exposure has brought a great threat to human health in recent years. Therefore, this study explored the effect of PGPI-1-a on the intestinal microbial community structure of rats exposed to PM2.5 using the animal model of PM2.5 inhalation exposure. The results showed that PGPI-1-a could regulate the intestinal microbiota by partly restoring the perturbed levels of Peptoniphilaceae_[G-2] and Lachnospiraceae_[G-2] caused by PM2.5 exposure. In addition, the relative abundance of Butyrivibrio, a butyric acid-producing genera, significantly increased after PGPI-1-a intervention. These results indicated that PGPI-1-a could improve the imbalance of intestinal microbiota due to PM2.5 exposure to a certain extent.

Carbohydrate Polymers published new progress about Actinobacteria. 492-62-6 belongs to class alcohols-buliding-blocks, and the molecular formula is C6H12O6, Name: (2S,3R,4S,5S,6R)-6-(Hydroxymethyl)tetrahydro-2H-pyran-2,3,4,5-tetraol.

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Api, A. M.; Belsito, D.; Botelho, D.; Bruze, M.; Burton, G. A. Jr.; Buschmann, J.; Cancellieri, M. A.; Dagli, M. L.; Date, M.; Dekant, W.; Deodhar, C.; Fryer, A. D.; Jones, L.; Joshi, K.; Kumar, M.; Lapczynski, A.; Lavelle, M.; Lee, I.; Liebler, D. C.; Moustakas, H.; Na, M.; Penning, T. M.; Ritacco, G.; Romine, J.; Sadekar, N.; Schultz, T. W.; Selechnik, D.; Siddiqi, F.; Sipes, I. G.; Sullivan, G.; Thakkar, Y.; Tokura, Y. published the artcile< RIFM fragrance ingredient safety assessment, linalool, CAS Registry number 78-70-6>, HPLC of Formula: 78-70-6, the main research area is .

There is no abstract available for this document.

Food and Chemical Toxicology published new progress about 78-70-6. 78-70-6 belongs to class alcohols-buliding-blocks, and the molecular formula is C10H18O, HPLC of Formula: 78-70-6.

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Ji, Xiaolong; Hou, Chunyan; Yan, Yizhe; Shi, Miaomiao; Liu, Yanqi published the artcile< Comparison of structural characterization and antioxidant activity of polysaccharides from jujube (Ziziphus jujuba Mill.) fruit>, Category: alcohols-buliding-blocks, the main research area is Ziziphus fruit polysaccharide antioxidant activity; Antioxidant activities; Jujube; Polysaccharide; Structural characterization.

The aim of this paper was to prepare purified fractions of polysaccharides from jujube (Ziziphus jujuba Mill.) fruit and further compare their structural characteristics and antioxidant activities. Firstly, three purified jujube polysaccharides, named PZMP1, PZMP2 and PZMP3, were successfully prepared by DEAE-Sepharose Fast Flow and Sephacryl S-300 columns. Then, their characteristics were studied and then compared by using chem. testing, high-performance gel permeation chromatog. (HPGPC), gas chromatog. (GC), Fourier transform IR spectroscopy (FT-IR), methylation anal., NMR spectroscopy, X-ray diffraction (XRD), SEM (SEM) and at. force microscopy (AFM). Thereafter, their antioxidant activities were also contrasted. The data achieved demonstrated that the three jujube polysaccharides derived from different adsorption capacity of DEAE-Sepharose Fast Flow and Sephacryl S-300 columns possessed different structural characteristics and antioxidant activity, and with higher galacturonic acid content could exhibit better antioxidant bioactivities, which could provide certain directions for the functional and medicinal purposes development of jujube polysaccharides.

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, Category: alcohols-buliding-blocks.

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Bialon, Marietta; Krzysko-lupicka, Teresa; Nowakowska-Bogdan, Ewa; Wieczorek, Piotr P. published the artcile< Chemical composition of two different lavender essential oils and their effect on facial skin microbiota>, Computed Properties of 78-70-6, the main research area is facial skin microbiota; gas chromatography with mass spectrometry; lavender essential oil.

Lavender oil is one of the most valuable aromatherapy oils, its anti-bacterial and anti-fungal activities can be explained by main components such as linalool, linalyl acetate, lavandulol, geraniol, or eucalyptol. The aim of the study was to assess the anti-microbial effects of two different lavender oils on a mixed microbiota from facial skin. The com. lavender oil and essential lavender oil from the Crimean Peninsula, whose chem. composition and activity are yet to be published, were used. Both oils were analyzed by gas chromatog. coupled to mass spectrometry. The composition and properties of studied oils were significantly different. The com. ETJA lavender oil contained 10% more linalool and linalyl acetate than the Crimean lavender oil. Both oils also had different effects on the mixed facial skin microbiota. The Gram-pos. bacilli were more sensitive to ETJA lavender oil, and Gram-neg. bacilli were more sensitive to Crimean lavender oil. However, neither of the tested oils inhibited the growth of Gram-pos. cocci. The tested lavender oils decreased the cell number of the mixed microbiota from facial skin, but ETJA oil showed higher efficiency, probably because it contains higher concentrations of monoterpenoids and monoterpenes than Crimean lavender oil does.

Molecules published new progress about 78-70-6. 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

Yang, Yu; Jin, Guo-Jie; Wang, Xing-Jie; Kong, Cai-Lin; Liu, Ji Bin; Tao, Yong-Sheng published the artcile< Chemical profiles and aroma contribution of terpene compounds in Meili (Vitis vinifera L.) grape and wine>, Quality Control of 78-70-6, the main research area is aroma terpene glycoside grape wine; Cedrol (PubChem CID: 65575); Citronellol (PubChem CID: 8842); Farnesol (PubChem CID: 445070); GC–MS; Geraniol (PubChem CID: 637566); Geranyl acetone (PubChem CID: 1549778); Linalool (PubChem CID: 6549); Mathematical regression; Meili; Menthol (PubChem CID: 1254); Nerol (PubChem CID: 643820); Terpene compound; Terpinene (PubChem CID: 7462); Terpineol (PubChem CID: 17100); Wine aroma.

The chem. profiles and aroma contribution of terpene compounds in Meili grapes and wine were analyzed. Bound terpene compounds were extracted using methanol, purified using Amberlite XAD-2 resin, concentrated in methanol/ethyl acetate, and enzymically hydrolyzed to release aglycons. Free terpene compounds were identified using solid-phase microextraction (SPME) coupled with gas chromatog.-mass spectrometry (GC-MS). Wine aroma characteristics were quantified by a trained sensory panel. Seventeen terpene glycosides were quantified in grapes and wines as pentosyl-glucopyranoside, the content of which ranged from 804 to 836 μg/kg, and from 155 to 192 μg/L, resp. Eight free terpenes were present in wines with their content ranging from 40.1 to 59.7 μg/L. Linalool was abundant both in bound and free terpenes, and math. regression revealed that terpenes, especially linalool (contribution efficient > 0.4), contributed heavily to Meili wine aroma. Finally, a mol. rearrangement scheme based on linalool was proposed in Meili grape and wine.

Food Chemistry published new progress about Flavor. 78-70-6 belongs to class alcohols-buliding-blocks, and the molecular formula is C10H18O, Quality Control of 78-70-6.

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Ghanbari Kermanshahi, Mohammad; Bahrami, Kiumars published the artcile< Fe3O4@BNPs@SiO2-SO3H as a highly chemoselective heterogeneous magnetic nanocatalyst for the oxidation of sulfides to sulfoxides or sulfones>, COA of Formula: C8H10OS, the main research area is sulfoxide preparation green chem chemoselective; sulfone preparation green chem chemoselective; sulfide oxidation iron oxide nanocatalyst.

The preparation and characterization of magnetic acidic boehmite nanoparticles as a heterogeneous catalyst, which is called Fe3O4@BNPs@SiO2-SO3H were described. This catalyst works efficiently in the selective oxidation of sulfides RSR1 [R = Ph, 4-bromobenzyl, prop-2-en-1-yl, benzothiazol-2-yl, etc.; R1 = Me, benzyl, carboxymethyl, etc.; RR1 = -(CH2-)4] and 9H-thioxanthen-9-one to sulfoxides RS(O)R1 or sulfones RS(O)2R1 in the presence of H2O2 as a green oxidant. It can easily be separated from the reaction medium by using an external magnet and it was recycled 6 times without loss of magnetic catalytic properties.

RSC Advances published new progress about Chemoselectivity. 699-12-7 belongs to class alcohols-buliding-blocks, and the molecular formula is C8H10OS, COA of Formula: C8H10OS.

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Cai, Aijie; Yan, Wenhao; Wang, Chao; Liu, Wei published the artcile< Copper-Catalyzed Difluoromethylation of Alkyl Iodides Enabled by Aryl Radical Activation of Carbon-Iodine Bonds>, Quality Control of 167938-56-9, the main research area is alkyl iodide copper catalyst difluoromethylation; alkyldifluoromethane preparation; copper; cross-coupling; difluoromethylation; radicals; reaction mechanisms.

A novel strategy that leveraged the halogen abstraction ability of aryl radicals, thereby engaging a diverse range of alkyl iodides in copper-catalyzed Negishi-type cross-coupling reactions at room temperature Specifically, aryl radicals generated via copper catalysis efficiently initiate the cleavage of the carbon-iodide bonds of alkyl iodides. The alkyl radicals thus generated enter the copper catalytic cycles to couple with a difluoromethyl zinc reagent, thus furnished the alkyl difluoromethane products. This unprecedented Negishi-type difluoromethylation approach was applied to the late-stage modification of densely functionalized pharmaceutical agents and natural products.

Angewandte Chemie, International Edition published new progress about Aralkyl halides, iodides Role: RCT (Reactant), SPN (Synthetic Preparation), RACT (Reactant or Reagent), PREP (Preparation). 167938-56-9 belongs to class alcohols-buliding-blocks, and the molecular formula is C8H17NO3, Quality Control of 167938-56-9.

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Ai, Han-Jun; Wang, Hai; Li, Chong-Liang; Wu, Xiao-Feng published the artcile< Rhodium-Catalyzed Carbonylative Coupling of Alkyl Halides with Phenols under Low CO Pressure>, Reference of 699-12-7, the main research area is rhodium catalyst carbonylative coupling alkyl halide phenol carbon monoxide.

A rhodium-catalyzed carbonylative transformation of alkyl halides under low pressure of CO has been developed. This robust catalyst system allows using phenols as the carbonylative coupling partner and, meanwhile, exhibits high functional group tolerance and good chemoselectivity. Substrates even with a large steric hindrance group or multiple reaction sites can be selectively converted into the desired products in good to excellent yields. A gram-scale experiment was performed and delivered an almost quant. amount of the product. Control experiments were performed as well, and a possible reaction mechanism is proposed.

ACS Catalysis published new progress about Coupling reaction (carbonylative). 699-12-7 belongs to class alcohols-buliding-blocks, and the molecular formula is C8H10OS, Reference of 699-12-7.

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Silva, Lorena Mara A.; Filho, Elenilson G. Alves; Rodrigues, Tigressa Helena S.; Louredo, Francisca Jamila C.; Zocolo, Guilherme J.; Canuto, Kirley M.; Mikich, Sandra B.; Liebsch, Dieter; De Almeida, Adriana; De Brito, Edy S. published the artcile< Metabolomic Profiling of Phloem Sap from Different Pine Species and Implications on Black Capuchin>, Computed Properties of 492-62-6, the main research area is metabolomic phloem sap monosaccharide pine specie animal plant interaction; Capuchin monkey; Data fusion; NMR; Phloem sap; SPME–GC–MS.

In most com. pine farms in southern Brazil, black capuchin causes damage to wood and financial losses when it removes bark from some pine species to feed upon underlying vascular tissues. Therefore, this study aimed to evaluate the variability of the primary metabolites of phloem saps from 10 different species of pine by NMR spectroscopy, as well as the aroma compounds using SPME-GC-MS. Each technique provided a different set of metabolites that we can correlate to monkey predilection. The PCA showed monosaccharide (detected by NMR) and α-pinene (pine-like and resinous flavor descriptors) as attractive compounds for monkeys. On the other hand, the low content of monosaccharide and the high content of β-phellandrene (citrus odor descriptor) was observed in less attacked pine species (P. patula). The data fusion on primary metabolites and aroma compounds corroborated the individual analyses, complementing the comprehension of the monkey predilection. Thus, P. elliottii was an avoided tree even with high content of sugars possibly due to its high content of β-phellandrene (citrus odor). The results are useful for further behavioral studies to determine the role that each highlighted metabolite plays in chem. mediated animal-plant interactions.

Journal of Chemical Ecology published new progress about Amino acids Role: BSU (Biological Study, Unclassified), BIOL (Biological Study). 492-62-6 belongs to class alcohols-buliding-blocks, and the molecular formula is C6H12O6, Computed Properties of 492-62-6.

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts