Category: alcohols-buliding-blocks

Luzzini, Giovanni published the artcileInfluence of grape composition and origin, yeast strain and spontaneous fermentation on aroma profile of Corvina and Corvinone wines, Recommanded Product: 3-(Methylthio)propan-1-ol, the main research area is ethyl acetate pH fermentation corvinone corvina grape wine aroma.

Volatile composition and sensory properties of Corvina and Corvinone red wines in relationship to grape origin, yeast strain and inoculated vs. spontaneous fermentation were investigated. Exptl. wines were produced using freshly harvested grapes of the two varieties coming from two different areas. The results indicated that, by affecting grape composition, grape origin had a primary impact on wine aroma chem. and sensory properties. From a chem. point of view, this effect was associated not only with grape-derived compounds but also to some extent with fermentation-derived esters. Yeast strains influence was mostly associated with higher alcs. and certain esters, whereas the main characteristic of spontaneous fermentation was increased concentration of Et acetate. Sensory anal. confirmed the greater impact of grape origin compared to yeast strain, indicating clusters of odor similarities which were mostly associated with variations in the content of Et esters, C6 alcs., and norisoprenoids in Corvina and of norisoprenoids, cyclic terpenes, acetate esters, and Et acetate in Corvinone, resp.

LWT–Food Science and Technology published new progress about Acidity. 505-10-2 belongs to class alcohols-buliding-blocks, name is 3-(Methylthio)propan-1-ol, and the molecular formula is C4H10OS, Recommanded Product: 3-(Methylthio)propan-1-ol.

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Wu, Haitang published the artcileCatalytic liquefaction of switchgrass in isobutanol/water system for bio-oil development over bifunctional Ni-HPMo/Fe3O4@Al-MCM-41 catalysts, Formula: C5H12O, the main research area is switchgrass catalytic liquefaction bifunctional catalyst.

A bifunctional Ni-HPMo/Fe3O4@Al-MCM-41 catalyst was prepared by impregnation method and used for the liquefaction of switchgrass in isobutanol/water mixed solvents. It was found that the introduction of Al species into MCM-41 could improve its catalytic performance of catalyst by enhancing the acidity and stability of mesoporous silica. The grafting of HPMo onto the Al-MCM-41 materials not only greatly increased the acidity but also enhanced the acid strength, with an optimal HPMo loading amount in the catalyst of 20 wt%. There was a clear effect of the catalyst on product yield and quality. A switchgrass conversion of 84.7% and a liquid yield of 55.0% could be obtained under the optimal conditions. Reuse of the catalyst indicated that it had a stable catalytic activity. Furthermore, the results showed that the isobutanol/water system was an efficient solvent for switchgrass liquefaction as well as the separation of higher heating value isobutanol phase products and lower heating value water phase products from the liquefaction mixture This work thus offers an effective approach to improve the product yields and quality in biomass liquefaction by using metal-heteropolyacid bifunctional catalysts.

Renewable Energy published new progress about Acidity. 584-02-1 belongs to class alcohols-buliding-blocks, name is 3-Pentanol, and the molecular formula is C5H12O, Formula: C5H12O.

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Scott, Gabrielle published the artcileExploring Plant Performance, Fruit Physicochemical Characteristics, Volatile Profiles, and Sensory Properties of Day-Neutral and Short-Day Strawberry Cultivars Grown in Texas, HPLC of Formula: 584-02-1, the main research area is strawberry cultivar volatile profile sensory physicochem Texas; Fragaria × ananassa; Texas strawberry; descriptive sensory analysis; strawberry cultivation; strawberry flavor; strawberry volatiles.

To assist increasing annual acreage of Texas-grown (U.S.A.) strawberries, it is essential to select cultivars with excellent plant and fruit quality characteristics suitable to the diverse environments. This study assessed multiple traits of 10 strawberry cultivars grown under high tunnels. A significant difference (p ≤ 0.05) was observed for all traits, which possessed a wide variability of metabolites. Plant anal. (number of live plants, plant vigor, and harvest yield) indicated that the yield ranged from 226 to 431 g/plant, pos. correlated to plant vigor. Fruit physicochem. characteristic anal., including red color (absorbance at 500 nm) and taste-associated indicators [°Brix, titratable acidity (TA), and total soluble solids (TSS)/TA], showed that °Brix and TSS/TA ranged from 8.0 to 12.9 and from 9.1 to 15.3, resp. More than 300 volatiles were identified using solid-phase microextraction-gas chromatog.-mass spectrometry, and total volatiles varied 1.5 times with high variance of individual compounds between cultivars. Descriptive sensory anal. indicated that strawberry flavor was pos. associated with sensory attributes of sweetness, jammy, fruity, buttery, fresh, and creamy while neg. related to bitterness, astringency, and sourness. Partial least squares regression indicated that strawberry flavor was highly correlated with sweet taste and volatile composition No specific relationship between these traits and day-neutral or June-bearing varieties was identified. Ideal cultivars for Texas growing conditions with superior and balanced flavor qualities were Albion, Sweet Charlie, Camarosa, Camino Real, and Chandler.

Journal of Agricultural and Food Chemistry published new progress about Acidity. 584-02-1 belongs to class alcohols-buliding-blocks, name is 3-Pentanol, and the molecular formula is C5H12O, HPLC of Formula: 584-02-1.

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Bakhshy, Ehsan published the artcileIsolation, qualitative and quantitative evaluation of galactomannan during germination of Trigonella persica (Fabaceae) seed, Product Details of C6H12O6, the main research area is Trigonella endosperm seed germination galactomannan; Galactomannan; Physicochemical properties; Seed germination.

Galactomannan extracted from Trigonella persica endosperm like to other galactomannans is useful in the medicine and pharmaceutical industry such as drug delivery due to its unique physicochem. properties. As soon as germination takes place, the hydrolysis of galactomannan begins and its structure changes. Evaluation of galactomannan content extracted from the germinating seeds (GEGS) and the non-germinated seeds (GENGS) showed that the amount of galactomannan was highest at 24 h after imbibition and was completely consumed approx. 48 h after imbibition. It seems that galactomannan is used for storage reserve synthesis in the cotyledon during germination. Based on the quant. assessment, FT-IR, macroscopic and microscopic observations, galactomannan of T. persica seeds have high an M/G ratio (approx. 5:1) and this ratio does not alter during germination. Therefore, changes in galactomannan structure (functional group and band) caused that GEGS have different physicochem. properties than GENGS. Based on the results, GENGS with a high M/G ratio may be suitable for drug delivery system due to some properties such as high viscosity and gelling.

International Journal of Biological Macromolecules published new progress about Aleuron. 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, Product Details of C6H12O6.

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Gao, Pinyi published the artcileStructural features, selenization modification, antioxidant and anti-tumor effects of polysaccharides from alfalfa roots, Name: (2R,3S,4S,5R)-2,3,4,5,6-Pentahydroxyhexanal, the main research area is Medicago root polysaccharide antioxidant selenization antitumor; Alfalfa polysaccharides; Anti-tumor activities; Antioxidant activities; Chemical structures; Selenization.

Hot water extraction and chromatog. purification methods were used to extract and purify two polysaccharides (RAPS-1 and RAPS-2) from the roots of alfalfa. Subsequently, RAPS-2 was modified using the HNO3/Na2SeO3 method to obtain Se-RAPS-2. The structural features, antioxidant and in vitro anti-tumor activities of the three polysaccharides were evaluated. The structural anal. revealed that RAPS-1 (Mw = 10.0 kDa) was composed of rhamnose, xylose, arabinose, galacturonic acid, mannose and glucose, whereas RAPS-2 (Mw = 15.8 kDa) consisted of rhamnose, xylose, galacturonic acid, mannose, glucose and galactose. RAPS-1 contained 1 → 2, 1 → 4, 1 → 3, and 1 → 6 or 1 → glycosidic bonds; however, while RAPS-2 lacked 1 → 4 glycosidic linkages. The mol. weight of Se-RAPS-2 was 11.0 kDa less than that of RAPS-2. The results of activities demonstrated that Se-RAPS-2 displayed superior antioxidant activity and inhibitory effect in HepG2 cells than RAPS-1 and RAPS-2.

International Journal of Biological Macromolecules published new progress about Alfalfa. 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, Name: (2R,3S,4S,5R)-2,3,4,5,6-Pentahydroxyhexanal.

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Shang, Hongmei published the artcileEffects of different extraction methods on the properties and activities of polysaccharides from Medicago sativa L. and extraction condition optimization using response surface methodology, Recommanded Product: (2R,3S,4S,5R)-2,3,4,5,6-Pentahydroxyhexanal, the main research area is Medicago polysaccharide extraction response surface methodol.

Polysaccharides from alfalfa (Medicago sativa L., MSPs) were extracted by four different methods: hot-water extraction (HWE), ultrasonic-assisted extraction (UAE), enzyme-assisted extraction (EAE) and ultrasonic-enzyme-assisted extraction (UEAE). The exptl. results showed that the monosaccharide compositions of the four MSPs extracted by the different extraction methods were the same, but the monosaccharide proportions were different. MSPs extracted by the UEAE method possessed the largest extraction yield, the highest uronic acid content and the best antioxidant activities among the four MSPs analyzed. Addnl., the Plackett-Burman design (PBD) and response surface methodol. (RSM) were used to determine the optimum UEAE conditions for extracting MSPs, revealing optimal conditions at a pH of 5.7, a 58 min enzymolysis time, a 40 °C enzymolysis temperature and a 41 °C ultrasonic temperature; an MSPs yield of 12.95% was obtained under these extraction conditions.

Process Biochemistry (Oxford, United Kingdom) published new progress about Alfalfa. 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, Hongyan published the artcileExtraction optimization, physicochemical properties and antioxidant and hypoglycemic activities of polysaccharides from roxburgh rose (Rosa roxburghii Tratt.) leaves, Formula: C6H12O6, the main research area is Rosa polysaccharide antioxidant physicochem property hypoglycemia; Biological activity; Extraction and purification; Polysaccharides from Rosa roxburghii Tratt. leaves.

The optimum extraction conditions of polysaccharides from roxburgh rose (Rosa roxburghii Tratt.) leaves (RLP) were obtained by response surface methodol. (RSM), which were a liquid to solid ratio of 21.16 mL/g, an extraction temperature of 81.32°C, and an extraction time of 90.49 min. An RLP yield of 11.04% was obtained under these conditions. DEAE-52 cellulose and Sepharose CL-6B columns were used to purify the RLP, and the purified polysaccharide components RLP-1.2 and RLP-2.1 were obtained. Both RLP-1.2 and RLP-2.1 were composed of galacturonic acid (GalA), glucose (Glc), galactose (Gal), and arabinose (Ara). However, the molar ratios of GalA, Glc, Gal, and Ara in RLP-1.2 and RLP-2.1 were different. At a concentration of 10 mg/mL, the α-amylase inhibitory activities of RLP-1.2 and RLP-2.1 reached 80.74% and 89.85% that of acarbose, resp., and the α-glucosidase inhibitory activity of RLP-1.2 reached 87.91% that of acarbose. In addition, both RLP-1.2 and RLP-2.1 showed good antioxidant activity. These results suggested that RLP-1.2 and RLP-2.1 possess potential as natural hypoglycemic agents or natural antioxidants.

International Journal of Biological Macromolecules published new progress about Alfalfa. 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

Liu, Xuegui published the artcileStructural characteristics of Medicago Sativa L. Polysaccharides and Se-modified polysaccharides as well as their antioxidant and neuroprotective activities, Application In Synthesis of 59-23-4, the main research area is Medicago selenium polysaccharide structure antioxidant neuroprotective activity; Antioxidant activity; Neuroprotective activity; Selenium polysaccharide.

Medicago Sativa L., a nutrient-rich plant used as feed for cattle and sheep, is widely planted globally. This study investigated the structural characteristics and activities of three kinds of novel polysaccharides (APS1, APS2 and APS3) isolated from the stems of M. sativa as well as its two selenium modified products (Se-APS2 and Se-APS3). APS1 (Mw = 13.4 KDa) and APS2 (Mw = 11.2 KDa) were composed of rhamnose, arabinose, mannose and galactose with different molar ratio, APS3 (Mw = 18.6 KDa) was composed of rhamnose, arabinose, fructose, mannose and galactose. All APS1-3 contained 1 → 3 : 1 → 6 : 1 → 4 : 1 → 2 glycosidic bonds in a ratio of 0.74:0.09:0.05:0.12, 0.34:0.20:0.36:0.10 and 0.63:0.17:0.06:0.14, resp. The selenium content of Se-APS2 (Mw = 9.0 KDa) and Se-APS3 (Mw = 10.2 KDa) were 1.05 and 2.57μg/mg, resp. Their surface morphol. and thermal stability were determined by scanning electron microscope (SEM) and thermal anal. (TGA), resp. Further, the antioxidant and neuroprotective activities of the three natural polysaccharides and two Se-polysaccharides were studied. Interestingly, Se-polysaccharides not only exhibited higher antioxidant activity, but also higher neuroprotective activity compared to natural polysaccharides.

International Journal of Biological Macromolecules published new progress about Alfalfa. 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

He, Honghua published the artcileIncreasing nitrogen supply to phosphorus-deficient Medicago sativa decreases shoot growth and enhances root exudation of tartrate to discharge surplus carbon dependent on nitrogen form, Formula: C4H6O5, the main research area is nitrogen carbon phosphorus shoot root exudation tartrate Medicago.

Aims: Carboxylate release by roots has been considered a strategy for mobilisation and acquisition of phosphorus (P). However, recently, it was argued that carboxylate release may be a way to discharge surplus carbon produced under conditions that limit plant growth. Plant P status may not be the main factor driving carboxylate release by roots. Instead, plant nitrogen (N) status and/or N:P ratio of the soil or plant may play a more important role in enhancing carboxylate release. A greenhouse pot experiment was performed to grow alfalfa in a P-deficient soil, supplied with two rates of P (0 and 20 mg kg-1) in combination with four forms of nitrogen (N) at five rates (0, 25, 50, 75, and 100 mg kg-1), to explore the effects of P rate, N form, N rate, and their interactions on plant growth, P and N status, and carboxylate release, and to determine the factors driving carboxylate release. Nitrogen addition weakened the pos. effect of P addition on plant growth, and increased plant N and P concentrations; P addition increased plant P concentration, but weakened the effect of N addition on plant N concentration The amount of tartrate increased dramatically with increasing N rate, which decreased shoot growth, depending on N form. At high P supply, tartrate exudation correlated neg. with shoot biomass. Nitrogen addition to P-deficient alfalfa decreased shoot growth and enhanced the release of tartrate, likely to discharge surplus carbon; and the effects varied with N form.

Plant and Soil published new progress about Alfalfa. 97-67-6 belongs to class alcohols-buliding-blocks, name is (S)-2-hydroxysuccinic acid, and the molecular formula is C4H6O5, Formula: C4H6O5.

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Zhang, Chen published the artcileExtract methods, molecular characteristics, and bioactivities of polysaccharide from alfalfa (Medicago sativa L.), Quality Control of 59-23-4, the main research area is Medicago polysaccharide bioactivity; compositions; glycosidic linkage; immunomodulation; molecular weight; polysaccharide.

The polysaccharide isolated from alfalfa was considered to be a kind of macromol. with some biol. activities; however, its mol. structure and effects on immune cells are still unclear. The objectives of this study were to explore the extraction and purifying methods of alfalfa (Medicago sativa L.) polysaccharide (APS) and decipher its composition and mol. characteristics, as well as its activation to lymphocytes. The crude polysaccharides isolated from alfalfa by water extraction and alc. precipitation methods were purified by semipermeable membrane dialysis. Five batches of alfalfa samples were obtained from five farms (one composite sample per farm) and three replicates were conducted for each sample in determination The results from ion chromatog. (IC) anal. showed that the APS was composed of fucose, arabinose, galactose, glucose, xylose, mannose, galactose, galacturonic acid (GalA), and glucuronic acid (GlcA) with a molar ratio of 2.6:8.0:4.7:21.3:3.2:1.0:74.2:14.9. The weight-average mol. weight (Mw), number-average mol. weight (Mn), and Z-average mol. weight (Mz) of APS were calculated to be 3.30 × 106, 4.06 × 105, and 1.43 × 108 g/mol, resp., according to the anal. by gel permeation chromatog.-refractive index-multiangle laser light scattering (GPC-RI-MALS). The findings of electron ionization mass spectrometry (EI-MS) suggest that APS consists of seven linkage residues, namely 1,5-Araf, galactose (T-D-Glc), glucose (T-D-Gal), 1,4-Gal-Ac, 1,4-Glc, 1,6-Gal, and 1,3,4-GalA, with molar proportions of 10.30%, 4.02%, 10.28%, 52.29%, 17.02%, 3.52%, and 2.57%, resp. Addnl., APS markedly increased B-cell proliferation and IgM secretion in a dose- and time-dependent manner but not the proliferation and cytokine (IL-2, -4, and IFN-γ) expression of T cells. Taken together, the present results suggest that APS are macromol. polymers with a molar mass (indicated by Mw) of 3.3 × 106 g/mol and may be a potential candidate as an immunopotentiating pharmaceutical agent or functional food.

Nutrients published new progress about Alfalfa. 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, Quality Control of 59-23-4.

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts