Tag: M.W=150-200

Diniz-Silva, Helena Taina published the artcileSurvival of Lactobacillus acidophilus LA-5 and Escherichia coli O157:H7 in Minas Frescal cheese made with oregano and rosemary essential oils, SDS of cas: 124-76-5, the main research area is Lactobacillus Escherichia oregano rosemary essential oil; Dairy products; E. coli O157:H7; Lactobacillus acidophilus; Phenolics.

The effects of the incorporation of the essential oils from Origanum vulgare L.(OVEO; 0.07μL/g) and Rosmarinus officinalis L.(ROEO; 2.65μL/g) in combination in Minas Frescal cheese on the counts of the probiotic Lactobacillus acidophilus LA-5 and Escherichia coli O157:H7 were evaluated during refrigerated storage (7 ± 0.5°C). The terpenes of OVEO and ROEO, survival of the probiotic strain during in vitro digestion, as well as the physicochem. and sensory aspects were also monitored in Minas Frescal cheese. All terpenes decreased in cheese when the storage time increased. The incorporation of OVEO and ROEO delayed the increase in L. acidophilus LA-5 counts in cheese, but did not affect its ability to survive in cheese under simulated gastrointestinal conditions. The decreases in counts of E. coli O157:H7 observed in the first 15 days of refrigerated storage were strongly correlated (r ≥ 0.82) with the terpenes detected in cheese. Scores attributed for aroma, flavor, overall impression and purchase intention of cheese with OVEO and ROEO increased with the increase of the storage time. The incorporation of OVEO and ROEO in combination could be a strategy to control E. coli O157:H7 in probiotic Minas cheese during storage; however, the amounts of these substances should be cautiously selected considering possible neg. sensory impacts in this product.

Food Microbiology published new progress about Carbohydrates 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, SDS of cas: 124-76-5.

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Xiao, Luyao published the artcileInfluences of drying methods on the structural, physicochemical and antioxidant properties of exopolysaccharide from Lactobacillus helveticus MB2-1, Category: alcohols-buliding-blocks, the main research area is Lactobacillus exopolysaccharide physicochem property drying antioxidant.

In this study, in order to evaluate influences of different drying methods on the structural characteristics, physicochem. properties and antioxidant activities of exopolysaccharides (EPS) from Lactobacillus helveticus MB2-1, three drying methods, including spray-drying (SD), freeze-drying (FD) and spray freeze-drying (SFD), were applied to dry EPS. Results showed that different drying procedures had no significant influence on the primary structure and constituent monosaccharides of EPSs. However, the surface morphol. of the three dried EPSs varied greatly in size and shape due to different drying processes. Among three dried EPSs, the particle size distribution of spray freeze-dried EPS (SF-EPS) was relatively narrower and uniform. Addnl., SF-EPS behaved better apparent viscosity and emulsifying property than spray-dried EPS (S-EPS) and freeze-dried EPS (F-EPS). SF-EPS exhibited stronger antioxidant activities when compared with S-EPS and F-EPS, according to the results of scavenging activities on different radicals and chelating activity on ferrous ion. Overall, SFD was the appropriate method for industrial production of EPS from Lactobacillus helveticus MB2-1 with better physicochem. properties and antioxidant activities.

International Journal of Biological Macromolecules published new progress about Carbohydrates 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, Category: alcohols-buliding-blocks.

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Yan, Jingmin published the artcileAnalyses of active antioxidant polysaccharides from four edible mushrooms, Recommanded Product: (2R,3S,4S,5R)-2,3,4,5,6-Pentahydroxyhexanal, the main research area is edible mushroom antioxidant polysaccharide analyzes; Antioxidant activities; Mushroom polysaccharides; Structural characterization.

Four water-soluble polysaccharides were extracted from Pleurotus eryngii, Flammulina velutipes, Pleurotus ostreatus and white Hypsizygus marmoreus. Using anion exchange and gel permeation chromatog., a neutral and an acidic fraction were purified from each water-soluble polysaccharide. Their mol. weights were all around 20 kDa except that the acidic polysaccharide from Pleurotus ostreatus (named WPOPA) had a lower mol. weight of 5 kDa. Four neutral polysaccharides were mainly composed of galactose (42.7%-69.1%), followed by Man (19.4%-39.3%) and Glc (1.1%-15.9%). Four acidic polysaccharides contained glucose (59.0%-81.8%) as major sugar and minor glucuronic acid (4.5%-9.5%). Acidic polysaccharides exhibited stronger antioxidant activities than neutral fractions, and WPOPA showed the best antioxidant effects. Structural anal. indicated WPOPA had β-(1 → 6)-glucan backbone branched at O-3 by β-1,3-D-Glcp, t-β-D-Glcp and t-β-D-GlcpA. This investigation would be useful for screening natural antioxidants and significant in developing mushroom polysaccharides as functional foods.

International Journal of Biological Macromolecules published new progress about Carbohydrates 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

Xu, Yaqin published the artcileStructural characteristics, biological, rheological and thermal properties of the polysaccharide and the degraded polysaccharide from raspberry fruits, Formula: C6H12O6, the main research area is Rubus fruit polysaccharide degradation structural antioxidant rheol thermal property; Activities; Fe(2+)-H(2)O(2) degradation; Polysaccharides; Rheological behavior; Structural characterization; Thermal properties.

A native polysaccharide (RCPI) with sugar content of 79.94 ± 0.57% was isolated from raspberry fruits. A degraded polysaccharide (DRCPI) with sugar content of 83.82 ± 0.71% was obtained from the crude polysaccharides after degradation by Fe2+-H2O2 treatment. The mol. weights of RCPI and DRCPI were determined to be 411,000 and 8010 Da, resp. GC anal. revealed that both RCPI and DRCPI were composed of the same monosaccharides (rhamnose, arabinose, xylose, mannose, glucose, galactose, and galacturonic acid) in different molar ratios. IR and NMR spectroscopy confirmed that RCPI and DRCPI possessed similar structural characteristics, although DRCPI displayed higher antioxidant activities and greater thermal stability. Furthermore, DRCPI exhibited excellent rheol. properties. These data provide evidence to support the application of raspberry-derived polysaccharides in functional foods.

International Journal of Biological Macromolecules published new progress about Carbohydrates 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, Formula: C6H12O6.

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Chen, Chun published the artcileA comparison study on polysaccharides extracted from Fructus Mori using different methods: structural characterization and glucose entrapment, Application In Synthesis of 59-23-4, the main research area is glucose polysaccharide extract Fructus structural characterization entrapment.

In this study, the structure characteristics and the hypoglycemic and antioxidant activities of mulberry fruit polysaccharides obtained by the commonly used hot water (MFPh)-, ultrasonic (MFPu)-, acid (MFPc)- and alkali (MFPa)-assisted extraction methods were investigated. NMR anal. indicated that the four polysaccharides had similar glycosidic linkage patterns. SEM analyses showed that the surface morphol. of the polysaccharides was greatly affected by the extraction methods. The results of the bioactivity assays indicated that MFPh exhibited stronger antioxidant and α-amylase inhibitory activities than the other polysaccharides. Moreover, all the polysaccharides showed good α-glucosidase inhibitory activities except for MFPu with the lowest mol. weight These results suggested that acid, alkali, and ultrasonic-assisted extractions have different effects on the degradation of polysaccharides without changing the main structure compared with hot water extraction In addition, the mol. weight of polysaccharides plays a key role in the bioactivity of the mulberry fruit polysaccharides.

Food & Function published new progress about Carbohydrates 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 In Synthesis of 59-23-4.

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

Lu, Shijun published the artcileInvestigation of vaping fluids recovered from New York State e-cigarette or vaping product use-associated lung injury patients, Quality Control of 124-76-5, the main research area is electronic cigarette vaping fluid product human lung injury; EVALI; cannabis; diluents; electronic cigarettes; pesticides; terpenes; vaping fluid; vitamin E acetate.

E-cigarette or vaping product use-associated lung injury (EVALI) is a serious pulmonary condition that is associated with the extended use of certain vaping products. EVALI was first characterized in the summer of 2019 and has since been reported in all 50 U.S. states. From August 2019 through June 2021, the New York State Department of Health has reported more than 197 confirmed cases emanating from all regions of the state. The Wadsworth Center at the New York State Department of Heath received vaping cartridges recovered from EVALI patients for chem. anal. of their contents. Untargeted anal. methods using gas chromatog.-mass spectrometry and liquid chromatog.-high-resolution mass spectrometry as well as targeted analyses for a variety of analytes including cannabinoids, pesticides, vitamin E acetate (VEA) and mycotoxins were used to characterize the composition of the vaping fluids and several com. vaping fluid additives. From the analyses of the 284 e-cigarette devices recovered from patients, 82 were found to be nicotine-containing pods, and 202 devices containing cannabis oil, apparently from unauthorized or black-market dealers. The fluids from the cannabis-oil cartridges tended to have lower levels of THCs (Δ9-tetrahydrocannabinol + Δ8-tetrahydrocannabinol) and total cannabinoids compared with those of com. produced formulations and contained significant levels of diluents including VEA, medium-chain triglycerides, polyethylene glycol, and castor oil. VEA was the diluent most frequently detected, which was present in 132 (65.3%) of the vaping fluids that contained cannabis oil. When present, VEA ranged from 2.0 to 67.8% of the total mass of the oil with a mean content of 37.0%. In some cases, two or three diluents were detected in the same sample. The ratio of VEA to THCs varied widely, from 0.07 to 5.34. VEA and specifically the high ratios of VEA to THCs in black-market vaping fluids may be causative in EVALI. The safety of addnl. components and additives that are present in vaping fluids are likewise of concern.

Frontiers in Chemistry (Lausanne, Switzerland) published new progress about Benzoic acids 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

Conte, Federica published the artcileGalactose in human metabolism, glycosylation and congenital metabolic diseases: Time for a closer look, Category: alcohols-buliding-blocks, the main research area is review galactose human metabolism glycosylation congenital metabolic disease; Collagen glycosylation; Congenital disorders of glycosylation; Galactose; Galactosemia; Keratan sulfate; Lysosomal disorders.

Galactose is an essential carbohydrate for cellular metabolism, as it contributes to energy production and storage in several human tissues while also being a precursor for glycosylation. Galactosylated glycoconjugates, such as glycoproteins, keratan sulfate-containing proteoglycans and glycolipids, exert a plethora of biol. functions, including structural support, cellular adhesion, intracellular signaling and many more. The biol. relevance of galactose is further entailed by the number of pathogenic conditions consequent to defects in galactosylation and galactose homeostasis. The growing number of rare congenital disorders involving galactose along with its recent therapeutical applications are drawing increasing attention to galactose metabolism In this review, we aim to draw a comprehensive overview of the biol. functions of galactose in human cells, including its metabolism and its role in glycosylation, and to provide a systematic description of all known congenital metabolic disorders resulting from alterations of its homeostasis.

Biochimica et Biophysica Acta, General Subjects published new progress about Carbohydrates 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, Category: alcohols-buliding-blocks.

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Shakhmatov, Evgeny G. published the artcileStructural studies of biologically active pectin-containing polysaccharides of pomegranate Punica granatum, Computed Properties of 59-23-4, the main research area is Punica fruit feel membrane pectin polysaccharide structural property; Arabinan; NMR; Pectic polysaccharides; Pomegranate wastes; Punica granatum; Structural analysis.

The polysaccharide PGW was isolated from peels and membranes of fruits of pomegranate P. granatum by hot water extraction The methods of ion exchange chromatog., partial acid hydrolysis, enzymic hydrolysis and NMR spectroscopy were employed to establish the major elements of its structure. It was shown that this polysaccharide contained polymers with different structures, the main components among which were pectic polysaccharides, represented mainly by highly methyl-esterified and lowly acetylated 1,4-α-D-galactopyranosyluronan and a minor amount of partially 2-O- and/or 3-O-acetylated RG-I. The side carbohydrate chains of the branched region of RG-I were mainly represented by terminal, 5-O-, 3-O-, 2,5-di-O-, 3,5-di-O- and 2,3,5-tri-O-substituted α-L-Araf residues indicating the presence of branched 1,5-α-L-arabinan and minor regions of 1,4-β-D-galactan or arabinogalactan type I. The degree of methylation of the isolated pectins varied depending on the method of treatment. As a result, peels and membranes of pomegranate fruits can be recommended as a source of highly and lowly methyl-esterified pectic polysaccharides.

International Journal of Biological Macromolecules published new progress about Carbohydrates 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, Computed Properties of 59-23-4.

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Guo, M.-Z. published the artcileStructure characterization, physicochemical property and immunomodulatory activity on RAW264.7 cells of a novel triple-helix polysaccharide from Craterellus cornucopioides, Synthetic Route of 59-23-4, the main research area is Craterellus macrophage immunomodulation polysaccharide; Chemical structure; Craterellus cornucopioides; Polysaccharide; Stability immunomodulatory activity.

In the study, a new triple-helix polysaccharide with favorable stability was purified from C. cornucopioides. Its structural characterization, stability and solution behavior were investigated by the GC-MS, periodate oxidation-smith degradation, FT-IR, 1D and 2D NMR spectroscopy, methylation anal., Scanning electron microscope, Congo-red, CD, TGA and DSC anal. The results showed that Craterellus cornucopioide polysaccharide (CCP) possessed the mol. weight of 1.97 × 103 kDa, is mainly composed of mannose (48.73%), galactose (17.37%), glucose (15.97%) and xylose (17.93%), resp. It was a heteroglycan with (1 → 3)-linked-β-D-Manp-(1 → 6)-linked a-D-Galp backbone distributed by (1 → 4)-linked-a-D-Xylp-t-a-D-Manp and t-β-D-Glup units at O-6. The result of TGA and DSC assay indicated that CCP has a favorable thermal stability. MTT and Scanning electro microscopy (SEM) assay showed that CCP could significantly improve the proliferation activity and induce cells activation of RAW264.7 in a certain range of concentrations and period.

International Journal of Biological Macromolecules published new progress about Carbohydrates 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, Synthetic Route of 59-23-4.

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts