Tag: M.W=150-200

Zeliou, Konstantina published the artcileMetabolomic fingerprinting and genetic discrimination of four Hypericum taxa from Greece, HPLC of Formula: 124-76-5, the main research area is Hypericum metabolomic fingerprinting; Essential oil; Flavonoids; Genetic analysis; Hypericaceae; Hypericum spp.; Metabolomics; Multivariate analysis; Naphthodianthrones; Phloroglucinols; Sesquiterpenes; nrITS.

Hypericum perforatum has plenty of uses in traditional medicine and is the source of top-selling herbal drugs and food supplements. The secondary metabolite chem. for most of the nearly 500 Hypericum taxa is still unknown, even though they are used interchangeably. In the present study, we characterized four Hypericum populations from Achaia, Greece, belonging to H. perforatum ssp. veronense, H. perfoliatum, H. triquetrifolium, and an uninvestigated taxon, H. empetrifolium ssp. empetrifolium, in terms of their essential oils and polar bioactives in methanolic extracts via GC-MS, LC-HRMS, LC-DAD-MS, and HPLC-DAD. We also performed sequence anal. of nrITS to explore the genetic profile of these taxa and to examine whether their genotype is correlated to the metabolome. Sixty-three non-volatile compounds, phloroglucinols in their majority, and over one hundred (113) volatiles, mostly sesqui- and mono- terpenes, were detected. The concentration of the major polar constituents varied greatly among samples. In particular, phloroglucinols′ diversity and abundance in H. empetrifolium ssp. empetrifolium was remarkable. The PCA and Biplot anal. revealed the contribution of each compound to the total chemodiversity and also revealed certain compounds that contribute to the discrimination of the samples. Sequence anal. of nrITS revealed different genetic profiles and markers which can be used for the identification of the four Hypericum taxa. The Mantel test showed a relatively strong correlation between the genetic profile and the volatile compounds and low with the main polar metabolites.

Phytochemistry (Elsevier) published new progress about Essential oils Role: BSU (Biological Study, Unclassified), BIOL (Biological Study). 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, HPLC of Formula: 124-76-5.

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Temerdashev, Z. A. published the artcileIdentification and Determination of the Components of Garden Sage (Salvia officinalis L.) Essential Oil, Isolated by Different Extraction Methods, COA of Formula: C10H18O, the main research area is Salvia essential oil camphor alphathujone betathujone hydrodistillation.

We studied the component composition of the essential oil of garden sage (Salvia officinalis L.), obtained by various extraction methods. Essential oils were obtained by hydrodistillation and subcritical CO2 extraction, supercritical fluid extraction, and subcritical extraction with solid-phase and liquid-liquid preconcentration The components were identified by comparing the recorded mass spectra with the spectra of individual compounds and the data of the NIST07 and WILEY8 data bases. For all extraction methods, the major essential oil components were 1,8-cineole, camphor, α-thujone, β-thujone, borneol, 4-terpineol, β-caryophyllene, β-caryophyllene oxide, and viridiflorol. The concentration of analytes in the extracts varied depending on the extraction method. In total, 104 components were identified in the extracts, of which 30 were extracted by hydrodistillation, 32 by subcritical CO2 extraction, 14 by supercritical fluid extraction, 46 and 62 by subcritical extraction with solid-phase and liquid-liquid extraction into the organic phase. An increase in the number of components in more stringent extraction methods as compared to hydrodistillation showed that, in the extracts, a deeper decomposition of macrocomponents might take place, except for camphor.

Journal of Analytical Chemistry published new progress about Essential oils Role: BSU (Biological Study, Unclassified), BIOL (Biological Study). 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, COA of Formula: C10H18O.

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Abdelsalam, Nader R. published the artcileMorphological, biochemical, molecular, and oil toxicity properties of Taxodium trees from different locations, Quality Control of 124-76-5, the main research area is Taxodium Stophilus essential oil toxicity insecticide.

Taxodium is a deciduous conifer belong to family Cupressaceae, commonly known as cypresses. In the present study, two species of Taxodium trees from four locations in Egypt were investigated. Bald cypress and pond cypress as plant genetic resources were surveyed and tested for horticultural and morphol. traits using biochem. and mol. genetic techniques. Leaf essential oils (EOs) were analyzed by gas chromatog. coupled with mass spectrometry (GC/MS), subjected to bioassay for insecticidal activity against the rice weevil (Sitophilus oryzae L.) and the red flour beetle (Tribolium castaneum (Herbst)), and compared with three monoterpenes (D-limonene, camphor, and carvone). T. distichum var. distichum (bald cypress) growing in the drylands in the Alexandria, El-Beheira, Giza 1, and Qalyubia governorates had lower root hydrogen peroxide (H2O2), proline content, and leaf peroxidase activity than T. distichum var. imbricarium (pond cypress, Giza 2), growing in swamplands of the Giza governorate. Forty random amplified polymorphic DNA (RAPD-DNA) primers and 20 simple sequence repeats (SSRs) indicated 57.41% and 64.50% polymorphism, resp., between the Taxodium species. The main constituents of leaf EOs from trees growing in Alexandria were germacrene D (14.71%), borneol acetate (6.81%), ledene oxide-(II) (6.13%), and trans(β)-caryophyllene (6.13%); thujopsene (18.27%), 3-carene (14.49%), and cedrol (8.02%) were found in trees from Qalyubia; thujopsene (19.93%), α-caryophyllene oxide (17.32%), and cedrol (10.87%) from trees in Giza 1, α-pinene (63.80%) and thujopsene (10.15%) from trees in Giza 2, and El-Beheira α-pinene (26.66%), thujopsene (22.42%), and cedrol (11.30%) in trees from El-Beheira. S. oryzae was more susceptible than T. castaneum to the EOs from leaves of Taxodium trees from the four localities. Taxodium oil from El-Beheira followed by carvone and EOs from trees grown in Alexandria showed the lowest LC50 against S. oryzae with values of < 50, 28.52, and > 50μL/L, resp. Carvone, Taxodium EOs from El-Beheira and Qalyubia exhibited the lowest LC50 against T. castaneum with values of 53.37, 66.40, and 72.54μL/L, resp.

Industrial Crops and Products published new progress about Essential oils Role: BSU (Biological Study, Unclassified), BIOL (Biological Study). 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

Hou, Kexin published the artcileAqueous enzymatic pretreatment ionic liquid-lithium salt based microwave-assisted extraction of essential oil and procyanidins from pinecones of Pinus koraiensis, COA of Formula: C10H18O, the main research area is ionic liquid lithium Pinus essential oil procyanidin enzymic pretreatment.

In this study, in order to simultaneously extract procyanidins and essential oil from pinecones of Pinus koraiensis, aqueous enzymic pretreatment ionic liquid-lithium salt based microwave-assisted extraction (AEILLME) with a modified hydrodistillation concatenated Soxhlet extraction apparatus was proposed. 1-Butyl-3-methylimidazolium bromide solution was selected as extraction solvent, while LiCl and mixture of cellulase and pectinase (1:1, weight/weight) as additives by single factor experiment Other parameters that affect the yield of target components were investigated and optimized by Plackett-Burman design and Box-Behnken design. The obtained optimal conditions were: microwave irradiation power 581.49 W, microwave irradiation time 15.95 min and liquid-solid ratio 11.91 mL/g. Under the optimized conditions, the predicted yields of oligomeric procyanidins, polymeric procyanidins and essential oil were 13.02, 32.19 and 7.76 mg/g, resp. Anal. of chem. constituents in the essential oil was performed on gas chromatog.-mass spectrometry and there was no significant difference on the components of essential oil obtained by proposed method and traditional methods. Ionic liquids were successfully recycled and reused, which could lower the process cost and being beneficial to industrial production This study provides an approach with good prospects for the application in extracting active components from natural plant material.

Journal of Cleaner Production published new progress about Essential oils Role: BSU (Biological Study, Unclassified), BIOL (Biological Study). 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, COA of Formula: C10H18O.

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Bisht, M. published the artcileEffect of natural drying methods on flavour profile of camphor rich Ocimum americanum L. from North India, Safety of rel-(1R,2R,4R)-1,7,7-Trimethylbicyclo[2.2.1]heptan-2-ol, the main research area is Ocimum essential oil natural drying method camphor flavor India.

In the present study, fresh aerial parts of Ocimum americanum L. were collected from Ramnagar, India and sun and shade drying was applied until constant weights The fresh and dried plant materials were hydrodistd. by Clevenger apparatus and the extracted oils were analyzed by GC and GC/MS. One-way ANOVA and correlation were performed to evaluate the difference and correlation between drying treatments using SPSS 16.0. The major compounds of the fresh oil were camphor (33.41%), maillol (11.96%), β-selinene (8.34%), α- selinene (6.92%), β-gurjunene (5.43%) and (E)-caryophyllene (5.07%). In the dried samples, significant increase (p < 0.05) in the percentage of camphor and maillol was observed while the percentage of (E)-cayophyllene, β-gurjunene, β-selinene and α-selinene significantly (p < 0.05) decreased during drying process. Drying caused loss of fourteen constituents with appearance of four compounds The oil yield was the highest under sun drying condition. Asian Journal of Chemistry published new progress about Essential oils Role: BSU (Biological Study, Unclassified), BIOL (Biological Study). 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

Trendafilova, Antoaneta published the artcileEssential Oil Composition of Five Thymus Species from Bulgaria, Quality Control of 124-76-5, the main research area is Thymus essential oil composition Bulgaria; PCA and CA; Sect. Hyphodromi; Thymus species; chemotypes; essential oils.

In this study, the essential oil composition of five Thymus species, belonging to Sect. Hyphodromi (A. Kerner) Halacsy – Thymus atticus Celak., T. leucotrichus Halacsy, T. striatus Vahl, T. zygioides Griseb. and T. perinicus (Velen.) Jalas. was studied by GC/MS/FID. T. atticus, T. leucotrichus, and T. striatus were characterized by high amounts of sesquiterpenoids (57.7, 78.9 and 79.7%, resp.) with β-caryophyllene and caryophyllene oxide as the main constituents. Aromatic compounds (61.2%) were the most abundant group in T. zygioides essential oil, with thymol (51.2%) as the principal component. The essential oil from the endemic species T. perinicus contained almost equal amounts of monoterpenoids (37.8%) and aromatic compounds (36.0%) with borneol (17.9%) and thymol (20.9%) as the major components. The obtained results revealed the existence of new chemotypes of T. atticus (caryophyllene oxide/β-caryophyllene), T. leucotrichus (β-caryophyllene/elemol/germacrene D) and T. striatus (β-caryophyllene/germacrene D/caryophyllene oxide). The essential oil content of endemic T. perinicus is reported for the first time. Principal component anal. (PCA) and cluster anal. (CA) were used to investigate the variations in the essential oils of different Thymus species from Sect. Hyphodromi (A. Kerner) Halacsy.

Chemistry & Biodiversity published new progress about Essential oils Role: BSU (Biological Study, Unclassified), BIOL (Biological Study). 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

Sran, Kulwinder Singh published the artcileProduction, characterization and bio-emulsifying activity of a novel thermostable exopolysaccharide produced by a marine strain of Rhodobacter johrii CDR-SL 7Cii, Safety of (2R,3S,4S,5R)-2,3,4,5,6-Pentahydroxyhexanal, the main research area is exopolysaccharide Rhodobacter johrii fermentation; Bio-emulsifier; Exopolysaccharide; Rhodobacter johrii; Structural characterization.

An exopolysaccharide (EPS) producing bacterial strain was isolated from the surface of marine macroalgae (Padina sp.). Based on polyphasic taxonomy, the strain CDR-SL 7Cii was assigned to the genus Rhodobacter and found to be the closest relative of the species Rhodobacter johrii. The strain was able to produce 6.2 g/l of EPS upon fermentation using R2A medium enriched with 2.5% glucose. FT-IR anal. revealed the presence of hydroxyl, carboxyl and diacyl-ester functional groups in the purified EPS. Further Chromatog. study revealed that R. johrii synthesized a high mol. weight anionic exopolysaccharide composed of glucose, glucuronic acid, rhamnose and galactose in a molar ratio of 3:1.5:0.25:0.25. The 1D and 2D NMR spectroscopy (COSY/HSQC) anal. revealed the presence of 1,6 linked-α-D-Glcp, 1,4 linked-β-D-Glcp, 1,3 linked-β-D-GlcA, 1,3 linked-β-D-Galp, 1,6 linked-β-D-Galf and 3-α-L-Rhmp residues. Moreover, the purified EPS has shown stability towards elevated temperature and also acted as a bio-emulsifier to create a high pH and temperature stable emulsion of hydrocarbon/water indicating its industrial potential. This is the first report of EPS production by a strain of Rhodobacter johrii.

International Journal of Biological Macromolecules published new progress about Exopolysaccharides Role: BSU (Biological Study, Unclassified), BIOL (Biological Study). 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, Safety of (2R,3S,4S,5R)-2,3,4,5,6-Pentahydroxyhexanal.

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Liu, Tao published the artcilePurification and characterization of an exopolysaccharide produced by Lactobacillus plantarum HY isolated from home-made Sichuan Pickle, Recommanded Product: (2R,3S,4S,5R)-2,3,4,5,6-Pentahydroxyhexanal, the main research area is Lactobacillus exopolysaccharide purification characterization; Characteristics; Exopolysaccharide; Lactobacillus plantarum; Purification.

In the present study, the exopolysaccharide (EPS) producing strain HY was isolated from home-made Sichuan Pickle and identified as Lactobacillus plantarum. The EPS was purified by ethanol precipitation, and fractionation by column chromatog., and the yield of purified HY EPS was 1.423 g/L. The mol. weight of the purified HY EPS was 9.549 × 104 Da and composed of mannose, galactose, glucuronic acid and glucose in a mass percentage of 72.99%, 17.27%, 6.99% and 2.75%, resp. FT-IR spectrum exhibited the existence of carboxyl and hydroxyl group. Partial sugar residues and glycosidic bond present in HY EPS could be identified by NMR spectroscopy, i.e. α-D-glucose and α-D-mannose residues. The degradation temperature (320 °C) and m.p. (122.78 °C) of the HY EPS were determined by thermogravimetric anal. (TGA) and differential scanning calorimeter anal. (DSC). A highly porous structure of EPS was observed by SEM, and the AFM anal. of the EPS revealed presence of spherical lumps. Meanwhile, the in vitro biol. activity assays of HY EPS showed considerable antioxidant and α-amylase inhibitory activities, suggesting its promising potential to be applied in the food and pharmaceuticals industry.

International Journal of Biological Macromolecules published new progress about Exopolysaccharides Role: BSU (Biological Study, Unclassified), BIOL (Biological Study). 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, Xiang published the artcileMetabolomics revealing the response of rice (Oryza sativa L.) exposed to polystyrene microplastics, Recommanded Product: rel-(1R,2R,4R)-1,7,7-Trimethylbicyclo[2.2.1]heptan-2-ol, the main research area is Oryza polystyrene microplastics metabolomics; Metabolites disturbance; Microplastics; Polystyrene; Rice.

Large amounts of microplastics accumulate in the agricultural soil. Herein, a laboratory exposure and field trials were carried out to investigate the response of rice (Oryza sativa L. II You. 900) to stress induced by polystyrene microplastics (PS-MPs) using a metabolomic approach. After laboratory exposure for 21 days, the decreases in shoot biomass of rice exposed to low, medium and high doses of PS-MPs were 13.1% (CV = 4.1%), 18.8% (CV = 3.7%), and 40.3% (CV = 9.2%), resp., while the antioxidant enzymes showed an inverted upper-U shape when exposed to PS-MPs. A total of 24 samples from three exposure dose levels were included in the metabolic anal. The metabolites of 12 amino acids, 16 saccharides, 26 organic acids and 17 others (lipids and polyols) in leaves decreased after the exposure to both 50 mg L-1 and 250 mg L-1 PS-MPs doses with hydroponically-cultured. The inhibition of perturbed biol. pathway causes the biosynthesis of amino acids, nucleic acids, fatty acids and some secondary metabolites decreased which indicate that the energy expenditure exceeded the substance accumulation. After 142 days of cultivation in farmland, the results with a maximum of 25.9% lower biomass in the crops exposed with PS-MPs. As such, the presence of PS-MPs may affect rice production by altering the metabolic systems of rice. Long-term exposure of PS-MPs to rice might be a potential risk to rice safety and quality.

Environmental Pollution (Oxford, United Kingdom) published new progress about Amines, compounds Role: BSU (Biological Study, Unclassified), BIOL (Biological Study). 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, Recommanded Product: rel-(1R,2R,4R)-1,7,7-Trimethylbicyclo[2.2.1]heptan-2-ol.

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Wang, Yueming published the artcileOligosaccharide attenuates aging-related liver dysfunction by activating Nrf2 antioxidant signaling, Safety of (2R,3S,4S,5R)-2,3,4,5,6-Pentahydroxyhexanal, the main research area is liver dysfunction chitosan oligosaccharide antioxidant; D‐galactose; Nrf2 pathway; anti‐aging; chitosan oligosaccharide; liver.

Chitosan oligosaccharide (COS) is the depolymerized product of chitosan possessing various biol. activities and protective effects against inflammation and oxidative injury. The aim of the present study was to investigate the antioxidant effects of COS supplements on aging-related liver dysfunction. We found that COS treatment significantly attenuated elevated liver function biomarkers and oxidative stress biomarkers and decreased antioxidative enzyme activities in liver tissues in D-galactose (D-gal)-treated mice. Furthermore, COS treatment significantly upregulated the expression of Nrf2 and its downstream target genes HO-1, NQO1, and CAT. Moreover, in vitro experiments showed that COS treatment played a vital role in protecting H2O2-exposed L02 cells against oxidative stress by activating Nrf2 antioxidant signaling. These data indicate that COS could protect against D-gal-induced hepatic aging by activating Nrf2 antioxidant signaling, which may provide novel applications for the prevention and treatment of aging-related hepatic dysfunction.

Food Science & Nutrition (Hoboken, NJ, United States) published new progress about Animal gene Role: BSU (Biological Study, Unclassified), BIOL (Biological Study) (CAT). 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, Safety of (2R,3S,4S,5R)-2,3,4,5,6-Pentahydroxyhexanal.

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts