Month: December 2022

Jarukas, Laurynas published the artcileOptimization and validation of the GC/FID method for the quantification of fatty acids in bee products, SDS of cas: 929-77-1, the main research area is fatty acid bee product GC flame ionization detection quantification.

To the best of our knowledge, so far, no study has been conducted about the comparison of the total fatty acid concentration in the four bee products (honey, bee pollen, bee bread, and propolis) collected from Lithuania. Therefore, we aimed to optimize the derivatization parameters and to investigate a simple and sensitive gas chromatog.-flame ionization detection (GC-FID) method to determine fatty acids. The optimal derivatization parameters were used to analyze fatty acids in the bee products. Regarding sample preparation, three derivatization parameters were compared (temperature and extraction time with BF3/MeOH reagent) in order to obtain a high amount of the total fatty acids of interest from the fatty acid Me ester (FAME) standard The results showed that the highest total yield of fatty acids was conducted by using the conventional heating process at 70°C for 90 min. Under optimal conditions, there was obtained excellent linearity for fatty acids with determination coefficients of r2 > 0.9998. The LODs and LOQs ranged from 0.21 to 0.54μg/mL and 0.63 to 1.63μg/mL, resp. This method has been successfully applied to the qual. anal. of fatty acids in bee products. The above findings might provide a scientific basis for evaluating the nutritional values of bee products.

Applied Sciences published new progress about Bread (bee). 929-77-1 belongs to class esters-buliding-blocks, name is Methyl docosanoate, and the molecular formula is C23H46O2, SDS of cas: 929-77-1.

Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics

Jarukas, Laurynas published the artcileOptimization and validation of the GC/FID method for the quantification of fatty acids in bee products, Related Products of esters-buliding-blocks, the main research area is fatty acid bee product GC flame ionization detection quantification.

To the best of our knowledge, so far, no study has been conducted about the comparison of the total fatty acid concentration in the four bee products (honey, bee pollen, bee bread, and propolis) collected from Lithuania. Therefore, we aimed to optimize the derivatization parameters and to investigate a simple and sensitive gas chromatog.-flame ionization detection (GC-FID) method to determine fatty acids. The optimal derivatization parameters were used to analyze fatty acids in the bee products. Regarding sample preparation, three derivatization parameters were compared (temperature and extraction time with BF3/MeOH reagent) in order to obtain a high amount of the total fatty acids of interest from the fatty acid Me ester (FAME) standard The results showed that the highest total yield of fatty acids was conducted by using the conventional heating process at 70°C for 90 min. Under optimal conditions, there was obtained excellent linearity for fatty acids with determination coefficients of r2 > 0.9998. The LODs and LOQs ranged from 0.21 to 0.54μg/mL and 0.63 to 1.63μg/mL, resp. This method has been successfully applied to the qual. anal. of fatty acids in bee products. The above findings might provide a scientific basis for evaluating the nutritional values of bee products.

Applied Sciences published new progress about Bread (bee). 111-11-5 belongs to class esters-buliding-blocks, name is Methyl octanoate, and the molecular formula is C9H18O2, Related Products of esters-buliding-blocks.

Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics

Jarukas, Laurynas published the artcileOptimization and validation of the GC/FID method for the quantification of fatty acids in bee products, Product Details of C11H22O2, the main research area is fatty acid bee product GC flame ionization detection quantification.

To the best of our knowledge, so far, no study has been conducted about the comparison of the total fatty acid concentration in the four bee products (honey, bee pollen, bee bread, and propolis) collected from Lithuania. Therefore, we aimed to optimize the derivatization parameters and to investigate a simple and sensitive gas chromatog.-flame ionization detection (GC-FID) method to determine fatty acids. The optimal derivatization parameters were used to analyze fatty acids in the bee products. Regarding sample preparation, three derivatization parameters were compared (temperature and extraction time with BF3/MeOH reagent) in order to obtain a high amount of the total fatty acids of interest from the fatty acid Me ester (FAME) standard The results showed that the highest total yield of fatty acids was conducted by using the conventional heating process at 70°C for 90 min. Under optimal conditions, there was obtained excellent linearity for fatty acids with determination coefficients of r2 > 0.9998. The LODs and LOQs ranged from 0.21 to 0.54μg/mL and 0.63 to 1.63μg/mL, resp. This method has been successfully applied to the qual. anal. of fatty acids in bee products. The above findings might provide a scientific basis for evaluating the nutritional values of bee products.

Applied Sciences published new progress about Bread (bee). 110-42-9 belongs to class esters-buliding-blocks, name is Methyl decanoate, and the molecular formula is C11H22O2, Product Details of C11H22O2.

Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics

Yilmaz-Oral, Didem published the artcileThe beneficial effect of clove essential oil and its major component, eugenol, on erectile function in diabetic rats, HPLC of Formula: 140-11-4, the main research area is clove essential oil fertility agent erectile dysfunction; Syzygium aromaticum ; clove; corpus cavernosum; diabetes; erectile dysfunction; eugenol.

Diabetic men are at a higher risk of erectile dysfunction (ED). A tropical plant, clove (Syn. Eugenia caryophyllata, Caryophyllus aromaticus L., Syzygium aromaticum (L.) Merr. & L.M. Perry) from the Myrtaceae family has displayed aphrodisiac activity. The present research aimed to investigate the impacts of clove essential oil (CEO) and the ingredient of CEO, eugenol (E) on ED in diabetic rats. We divided Sprague-Dawley rats into control and diabetic groups. Erectile function was evaluated before and after CEO and E intracavernosal injection. CEO- and E-induced relaxation responses were investigated in isolated corpus cavernosum (CC) using various inhibitors. The intracavernous administration of CEO and E restored erectile responses in diabetic rats. CEO and E induced remarkable relaxation in all groups. CEO- and E-induced relaxation responses were partially inhibited after pre-contraction with KCl. Tetraethylammonium and glibenclamide inhibited the relaxation response to CEO. Glibenclamide inhibited maximum relaxation to E. The inhibitors of nitric oxide synthase (NOS), soluble guanylyl cyclase and nifedipine did not change CEO- and E-induced relaxation responses. The current results suggest that CEO and the major compound of the essential oil, E improved diabetes-induced ED in rats, and CEO caused CC relaxation via K+ channels independently NO signalling pathway.

Andrologia published new progress about Body weight. 140-11-4 belongs to class esters-buliding-blocks, name is Benzyl acetate, and the molecular formula is C9H10O2, HPLC of Formula: 140-11-4.

Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics

Rahnama, Golsomeh published the artcileOral administration of royal jelly may improve the preservation of rooster spermatozoa, Quality Control of 110-42-9, the main research area is royal jelly spermatozoa preservation andrographolide fructone caprylic acid; DNA fragmentation; cryopreservation; liquid storage; rooster; royal jelly; spermatozoa.

The aim of the present study was to investigate the effect of dietary supplementation of royal jelly (RJ) on liquid and frozen storage of rooster spermatozoa. Twenty-five 30-wk-old of Mazandaran native breeder roosters were randomly divided into five treatments (n = 5 roosters/group). Exptl. treatments are designed to include a control group and various levels (0.0 (RJ0), 100 (RJ100), 200 (RJ200), 300 (RJ300) mg kg-1 BW-1) of royal jelly (RJ) that were fed to the roosters using force-feed method. The result of this study showed that the spermatozoa forward progressive motility, abnormality, membrane integrity, and viability were improved by the RJ100 group compared to the other groups after 24 and 48 h storage period at 4°C. The percentage of membrane integrity and forward progressive motility after freeze-thawing in the RJ100 group was significantly higher than the other groups, and the percentage of abnormal spermatozoa was lower. A significant decrease in semen quality parameters was seen after 24 and 48 h of refrigeration, but there was no observed change between 2 and 24 h in the RJ100. Moreover, after freeze-thawing, DNA integrity and mitochondrial activity in the RJ100 group were significantly higher than the other groups. According to our results, feeding of RJ at 100 mg kg-1 BW-1 to the roosters was improved spermatozoa characteristics during liquid and cryopreservation conditions.

Journal of Animal Physiology and Animal Nutrition published new progress about Body weight. 110-42-9 belongs to class esters-buliding-blocks, name is Methyl decanoate, and the molecular formula is C11H22O2, Quality Control of 110-42-9.

Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics

Shaikh, Jaweriah Ali published the artcileEfficacy of nitazoxanide and probiotics in children presenting with acute watery diarrhea presenting at Tertiary Care Hospital, Karachi, Category: esters-buliding-blocks, the main research area is acute watery diarrhea nitazoxanide probiotics.

Objective: To compare the efficacy of nitazoxanide and probiotics in children presenting with acute watery diarrhea presenting at Tertiary Care Hospital, Karachi. Material andMethods: The study design was randomized control trial. Study was conducted at Department of Pediatrics, Ziauddin University Hospital, Karachi. The duration of this study was Six months after approval from 02 Dec. 2019 to 02 June 2020. Data was prospectively collected from patients after taking a verbal consent. 160 patients who met the diagnostic criteria were included. Brief history was taken and demog. information was entered in the Performa. Quant. data was presented as simple descriptive statistics giving mean and standard deviation and qual. variables was presented as frequency and percentages. Results: Out of 80 patients in the nitazoxanide group mean age, duration of diarrhea, length of hospital stay, height, weight and Vesikari score in our study was 24.21±4.24 mo, 5.87±1.78 days, 8±2.54 days, 130.6±10.21 cm, 27.7±2.25 kg and 4.7±0.89 resp. Whereas, out of 80 patients in the probiotics group min. age, duration of diarrhea, length of hospital stay, height, weight and Vesikari score in our study was 26.48±4.24 mo, 6.41±1.14 days, 8±1.89 days, 121.9±7.47 cm, 29.2±3.41 kg and 5.1±0.58 resp. Efficacy in the nitazoxanide group was 67 (83.8%) compared with 58 (72.5%) in the probiotic group. Conclusion: Treatment with nitazoxanide and probiotics is effective in the management of children with acute watery diarrhea. Small differences in favor of nitazoxanide were found in comparison with probiotics. Nitazoxanide is an important treatment option for acute watery diarrhea.

Indo American Journal of Pharmaceutical Sciences published new progress about Body height. 55981-09-4 belongs to class esters-buliding-blocks, name is 2-((5-Nitrothiazol-2-yl)carbamoyl)phenyl acetate, and the molecular formula is C12H9N3O5S, Category: esters-buliding-blocks.

Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics

Radzki, Radoslaw Piotr published the artcileLipoic acid (LA) dose-dependently protects bone losses in the mandible of rats during the development of osteopenia by inhibiting oxidative stress and promoting bone formation, Safety of 2-((5-Nitrothiazol-2-yl)carbamoyl)phenyl acetate, the main research area is osteopenia bone loss oxidative stress lipoic acid; DXA; Lipoic acid; Osteoporosis; Oxidative stress; Peripheral quantitative tomography; Rats.

Our study was carried out to evaluate the effect of lipoic acid (LA) on the densitometric properties, structure and mech. strength of the mandible of Wistar rats with developing osteopenia. The study used 42 sham-operated (SHO) and ovariectomized (OVX) rats. The OVX rats were randomly divided (n = 6) onto two controls treated s.c. with physiol. saline (OVX-PhS) and 17β-estradiol (OVX-E2), resp., and onto four exptl. OVX groups that received LA in the doses of 12.5, 25, 50 and 100 mg/kg/day for 28 days. The results demonstrated that the lack of estrogen brought about osteopenic bone changes, especially in the trabecular compartment. In addition, while the usage of LA in the doses of 12.5 and 25 LA had no effect in OVX rats, the dose of 100 effectively inhibited osteopenic changes of the mandible. This dose maintained structural, densitometric and mech. parameters at levels like that in the SHO and OVX-E2 groups by inhibiting the destructive influence of oxidative stress. Dose 50, however, was revealed to be the most effective. It not only inhibited atrophic changes and the influence of oxidative stress, but also stimulated the formation of mandibular bone tissue. Our results suggest that the administration of LA is effective in preventing atrophic changes in the mandibular bone tissue in conditions of ovarian hormone deficiency and suggest its potential in the therapy of osteoporosis.

Biomedicine & Pharmacotherapy published new progress about Blood serum. 55981-09-4 belongs to class esters-buliding-blocks, name is 2-((5-Nitrothiazol-2-yl)carbamoyl)phenyl acetate, and the molecular formula is C12H9N3O5S, Safety of 2-((5-Nitrothiazol-2-yl)carbamoyl)phenyl acetate.

Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics

Li, Ke published the artcileSpatially Organized Functional Bioreactors in Nanoscale Mesoporous MOFs for Cascade Scavenging of Intracellular ROS, COA of Formula: C24H14Cl2O7, the main research area is bioreactor nanoscale mesoporous metal organic framework intracellular reactive oxygen; species.

The creation of artificial microenvironments with specific functionalities to mimic multiple cascade biocatalytic processes in cells is highly desirable. Here, Zr-based large-pore mesoporous metal-organic frameworks (mesoMOFs) were successfully developed for the construction of such spatially organized cascade bioreactors. Thanks to the mediating effect of the Hofmeister ion and the flexibility of Zr-MOFs, large mesopores and functional microporous mesopore walls were integrated into a single nanoplatform, ensuring the efficient mass exchange between the interconnected pore units with different sizes. As a proof of concept, natural superoxide dismutase and catalase mimic were spatially positioned in these hierarchical mesoMOFs, which formed a cascade antioxidant defense system and presented an efficient intracellular reactive oxygen species scavenging ability. This model is expected to set a conceptual guideline for the design of compartmentalized bioreactors in nanoscale MOFs to mediate the complex intracellular catalytic networks.

Chemistry of Materials published new progress about Biomimetics. 2044-85-1 belongs to class esters-buliding-blocks, name is 2′,7′-Dichloro-3-oxo-3H-spiro[isobenzofuran-1,9′-xanthene]-3′,6′-diyl diacetate, and the molecular formula is C24H14Cl2O7, COA of Formula: C24H14Cl2O7.

Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics

Garuba, T. published the artcileProximate composition and chemical profiles of reishi mushroom (Ganoderma lucidum (Curt: Fr.) Karst), Application of Ethyl pentadecanoate, the main research area is proximate composition chem profile Ganoderma ethanol extract.

Ganoderma lucidum is a mushroom commonly used in folk medicine especially Traditional Chinese Medicine (TCM) but information on its nutritional and chem. profiles remains insufficient. This work aimed at evaluating proximate composition and identification of bioactive compounds in ethanolic extract of G. lucidum. Pulverized G. lucidum was suspended in ethanol in 1:10 and extraction was carried out by rotary evaporation to produce G. lucidum extract (GLE). Proximate composition of the sample was analyzed. Fourier Transform IR (FTIR) spectroscopy was carried out to identify different functional groups in GLE. Gas Chromatog.-Mass Spectrometry (GC-MS) was used to determine the bioactive compounds of the sample. Proximate anal. revealed that the amount of carbohydrate in sample was the highest (44.95%), followed by protein (15.75%). FTIR results showed that OH, C=O, C-OH, N-H 1* and 2* and alkyl halide are functional groups in GLE. A total of twelve (12) bioactive compounds were identified and the most prevailing compound in GLE was Et octadeca-9,12-dienoate (45.95%), followed by ethylhexadecanoate / Et palmitate (18.09%). Guaiacol (4.95%), octadecanoic acid (5.37%), ethylcyclohexane (3.31%) were also present. It can be inferred from this study that G. lucidum is nutritional and contains bioactive compounds that are useful in nutraceutical and pharmaceutical industries.

Journal of Scientific Research (Rajshahi, Bangladesh) published new progress about Biomass ash. 41114-00-5 belongs to class esters-buliding-blocks, name is Ethyl pentadecanoate, and the molecular formula is C17H34O2, Application of Ethyl pentadecanoate.

Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics

Ling, Mengqi published the artcileModification of sensory expression of 3-isobutyl-2-methoxypyrazine in wines through blending technique, Category: esters-buliding-blocks, the main research area is volatile compound wine blending sensory interaction aroma modification; 3-isobutyl-2-methoxypyrazines; GC-MS; aroma modification; bottle aging; sensory interaction; volatile compounds; wine blending.

Sensory interactions exist between 3-alkyl-2-methoxypyrazines and various volatiles in wines. In this study, the binary blending of Cabernet Franc wines containing high levels of MPs and three monovarietal red wines with two proportions was conducted after fermentation Volatiles were detected by gas chromatog.-mass spectrometry (GC-MS), and wines were evaluated by quant. descriptive anal. at three-month intervals during six-month bottle aging. Results showed blending wines exhibited lower intensity of ‘green pepper’, especially CFC samples blended by Cabernet Sauvignon wines with an even higher concentration of 3-isobutyl-2-methoxypyrazine (IBMP). Based on Pearson correlation anal., acetates could promote the expression of ‘tropical fruity’ and suppress ‘green pepper’ caused by IBMP. Pos. correlation was observed among ‘green pepper’, ‘herbaceous’, and ‘berry’. The concentration balance between IBMP and other volatiles associated with ‘green pepper’ and fruity notes was further investigated through sensory experiments in aroma reconstitution. Higher pleasant fruity perception was obtained with the concentration proportion of 1-hexanol (1000μg/L), isoamyl acetate (550μg/L), Et hexanoate (400μg/L), and Et octanoate (900μg/L) as in CFC samples. Blending wines with proper concentration of those volatiles would be efficient to weaken ‘green pepper’ and highlight fruity notes, which provided scientific theory on sensory modification of IBMP through blending technique.

Molecules published new progress about Bell pepper. 111-11-5 belongs to class esters-buliding-blocks, name is Methyl octanoate, and the molecular formula is C9H18O2, Category: esters-buliding-blocks.

Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics