Month: December 2022

Slaghenaufi, Davide published the artcileTwo sides to one story-aroma chemical and sensory signature of Lugana and Verdicchio wines, Computed Properties of 505-10-2, the main research area is Lugana Verdicchio wine sensory property aroma; Lugana; Verdicchio; chemical signature; sensory space; wine aroma.

Lugana and Verdicchio are two Italian white wines with a Protected Designation of Origin (PDO) label. These two wine types are produced in different regions using the same grape variety. The aim of this work is to investigate the existence of volatile chem. markers that could help to elucidate differences between Lugana and Verdicchio wines both at chem. and sensory levels. Thirteen com. wine samples were analyzed by Gas Chromatog.-Mass Spectrometry (GC-MS), and 76 volatile compounds were identified and quantified. Verdicchio and Lugana had been differentiated on the basis of 19 free and glycosidically bound compounds belonging to the chem. classes of terpenes, benzenoids, higher alcs., C6 alcs. and norisoprenoids. Samples were assessed by means of a sorting task sensory anal., resulting in two clusters formed. These results suggested the existence of 2 product types with specific sensory spaces that can be related, to a good extend, to Verdicchio and Lugana wines. Cluster 1 was composed of six wines, 4 of which were Lugana, while Cluster 2 was formed of 7 wines, 5 of which were Verdicchio. The first cluster was described as “”fruity””, and “”fresh/minty””, while the second as “”fermentative”” and “”spicy””. An attempt was made to relate anal. and sensory data, the results showed that damascenone and the sum of 3 of esters the Et hexanoate, Et octanoate and isoamyl acetate, was characterizing Cluster 1. These results highlighted the primary importance of geog. origin to the volatile composition and perceived aroma of Lugana and Verdicchio wines.

Molecules published new progress about Norisoprenoids Role: BSU (Biological Study, Unclassified), BIOL (Biological Study). 505-10-2 belongs to class alcohols-buliding-blocks, name is 3-(Methylthio)propan-1-ol, and the molecular formula is C4H10OS, Computed Properties of 505-10-2.

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Morales, Diego published the artcileTesting the effect of combining innovative extraction technologies on the biological activities of obtained β-glucan-enriched fractions from Lentinula edodes, Application of (2R,3S,4S,5R)-2,3,4,5,6-Pentahydroxyhexanal, the main research area is Lentinula beta glucan extraction biol activity.

Innovative technologies as ultrasound-assisted extraction (UAE) (550 W, 60% amplitude, 50°C) or subcritical water extraction (SWE) (200°C, 11.7 MPa) were more effective than hot water extractions to obtain β-glucan-enriched fractions from shiitake mushrooms. UAE required longer extraction time (60 min) than SWE (15 min). Combination of UAE + SWE or pre-treatment of the raw material with supercritical CO2 (SFE) (40°C, 35 MPa, 3 h) before both extractions yielded extracts containing larger β-glucan concentrations Fluorimetric/colorimetric determinations indicated that obtained fractions contained (1 → 3)- and (1 → 3),(1 → 6)-β-glucans. NMR confirmed their presence as well as (1 → 3)-α-glucans and heteropolymers including mannose and galactose. SWE (15 min), SFE + SWE or UAE + SWE extracts showed larger glucose levels and lower mannose and galactose residues than the other extractions suggesting certain extraction specificity towards β-glucans. They also included more chitin-derivatives than UAE. The extracts obtained after combination of technologies partially retained their immunomodulatory properties but they showed high hypocholesterolemic activities according to in vitro studies.

Journal of Functional Foods published new progress about Interleukin 1β 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, Application of (2R,3S,4S,5R)-2,3,4,5,6-Pentahydroxyhexanal.

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Abe, Shigeaki published the artcileVersatile synthesis of oligosaccharide-containing fullerenes, Application In Synthesis of 87905-98-4, the main research area is oligosaccharide fullerene preparation; oxylamine fullerene preparation; ligation oxylamine fullerene oligosaccharide.

Oxylamine-functionalized fullerene derivatives have been synthesized in order to attach oligosaccharides to the fullerene surface by simple chem. ligation. This method greatly simplifies the synthetic process for a variety of oligosaccharide-containing fullerenes without any complicated chem. modification.

Tetrahedron: Asymmetry published new progress about Fullerenes Role: SPN (Synthetic Preparation), PREP (Preparation) (oligosaccharide). 87905-98-4 belongs to class alcohols-buliding-blocks, name is Benzyl (5-hydroxypentyl)carbamate, and the molecular formula is C13H19NO3, Application In Synthesis of 87905-98-4.

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

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

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

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

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

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

Singh, Harminder Pal published the artcileAssessment of in vitro antioxidant activity of essential oil of Eucalyptus citriodora (lemon-scented Eucalypt; Myrtaceae) and its major constituents, Synthetic Route of 42822-86-6, the main research area is essential oil Eucalyptus citriodora antioxidant.

We investigated the chem. composition and antioxidant activity of Eucalyptus citriodora (lemon-scented eucalyptus) leaf oil in terms of total antioxidant activity, ferric reducing antioxidant power (FRAP) assay, ferrous ion chelating activity, and scavenging of hydrogen peroxide (H2O2) and 2,2-diphenyl-1-picrylhydrazyl (DPPH) radicals and inhibition of lipid peroxidation GC-MS anal. of essential oil revealed the presence of 43 components constituting 99.2% of oil. The oil was monoterpenoid (94.35% of oil) with citronellal (60.66%), β-citronellol (12.58%) and isopulegol (8.19%) as the major monoterpenoids. Oil and its major monoterpenes exhibited moderate to strong antioxidant activity in terms of TAA, FRAP and Fe+2 chelating, DPPH and H2O2 scavenging, and lipid peroxidation inhibition. The study concludes that E. citriodora leaves contain monoterpenoid rich oil exhibiting antioxidant activity.

LWT–Food Science and Technology published new progress about Essential oils Role: BSU (Biological Study, Unclassified), BIOL (Biological Study). 42822-86-6 belongs to class alcohols-buliding-blocks, name is 2-(2-Hydroxypropan-2-yl)-5-methylcyclohexanol, and the molecular formula is C10H20O2, Synthetic Route of 42822-86-6.

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts