Month: November 2022

Assessing Volatiles in Three Chinese Dwarf Cherry Cultivars during Veraison and Maturation Using Headspace-Solid Phase Microextraction with Gas Chromatography-Mass Spectrometry was written by Cui, Qingyu;Ye, Liqin;Guo, Chang-e;Li, Weidong. And the article was included in ACS Omega in 2020.Recommanded Product: 2198-61-0 The following contents are mentioned in the article:

Chinese dwarf cherry is a native shrub in northwest China with a rich and unique fruit aroma. This study aims to determine the changes in volatile profiles during the maturation period, which provides a theor. basis for the optimal harvest times and the breeding of aroma-rich varieties. The variation in the production of 164 volatile compounds from three Chinese dwarf cherry cultivars, namely, “Jing’ou 1”, “Jing’ou 2”, and “Jing’ou 3”, were investigated by headspace-solid phase microextraction (HS-SPME)-GC-MS. These volatiles mainly constituted alcs., carbonyls, esters, terpenoids, and hydrocarbons. Their maturation process could be divided into three stages, namely prophase, metaphase, and anaphase. Prophase contained an abundance of hydrocarbons and carbonyls, primarily benzaldehyde being dominant among all volatiles. During metaphase, volatiles remained at a low level of abundance and diversity. Anaphase coincided with full maturation and was associated with esters and terpenoids; in particular, “Jing’ou 3” presented more compound diversity and a high level of acetate esters. The periods including the week prior to veraison and the week during maturation were particularly critical in volatile formation in Chinese dwarf cherries. This study reveals that the low level or lack of hexanal might be one of the distinctive characteristics separating Chinese dwarf cherries from other Cerasus or Rosaceae fruits. This study involved multiple reactions and reactants, such as Isopentyl hexanoate (cas: 2198-61-0Recommanded Product: 2198-61-0).

Isopentyl hexanoate (cas: 2198-61-0) belongs to esters. Esters perform as high-grade solvents for a broad array of plastics, plasticizers, resins, and lacquers, and are one of the largest classes of synthetic lubricants on the commercial market. Polyesters are important plastics, with monomers linked by ester moieties. Cyclic esters are called lactones, regardless of whether they are derived from an organic or inorganic acid. One example of an organic lactone is γ-valerolactone.Recommanded Product: 2198-61-0

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

Transdermal Delivery of Curcumin-Loaded Solid Lipid Nanoparticles as Microneedle Patch: an In Vitro and In Vivo Study was written by Prabhu, Ankitha;Jose, Jobin;Kumar, Lalit;Salwa, S.;Vijay Kumar, M.;Nabavi, Seyed Mohammad. And the article was included in AAPS PharmSciTech in 2022.Recommanded Product: Glyceryl monostearate The following contents are mentioned in the article:

Curcumin is well known for its neuroprotective effect, and also able to alleviate Parkinsonian features. Clin. application of curcumin is limited due to its low bioavailability. Hence, we hypothesized that the microneedles (MN) containing drug-loaded solid lipid nanoparticles (SLNs) may be able to improve its bioavailability and efficacy. The SLNs were prepared with microemulsion technique using glyceryl monostearate as a lipid and tween 80 as a stabilizer. The particle size, polydispersity index, zeta potential, and entrapment efficiency of prepared SLNs were determined The optimized formulation was incorporated into microneedle arrays using micromolding technique and fabricated microneedle patch were characterized by Fourier transform IR spectroscopy, SEM, optical microscopy, ex vivo permeation studies, histol. studies, and fluorescent microscopy. The fabricated microneedle patch was also evaluated for neuroprotective activity and skin irritation potential. Fourier transform IR spectroscopy studies of SLNs and microneedles confirmed the chem. compatibility of excipients with curcumin. The developed microneedles were also found to be non-irritant with decreased degree of bradykinesia, high motor coordination, and balance ability. The study provided a theor. basis for the use of novel microneedle containing curcumin-loaded solid lipid nanoparticles as a useful tool for the treatment of Parkinson′s disease. This study involved multiple reactions and reactants, such as Glyceryl monostearate (cas: 31566-31-1Recommanded Product: Glyceryl monostearate).

Glyceryl monostearate (cas: 31566-31-1) belongs to esters. Esters perform as high-grade solvents for a broad array of plastics, plasticizers, resins, and lacquers, and are one of the largest classes of synthetic lubricants on the commercial market. Acyl chlorides and acid anhydrides alcoholysis is another way to produce esters. Acyl chlorides and acid anhydrides react with alcohols to produce esters. Anydrous conditions are recommended since both acyl chlorides and acid anhydrides react with water.Recommanded Product: Glyceryl monostearate

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

Design expert assisted formulation, characterization and optimization of microemulsion based solid lipid nanoparticles of repaglinide was written by Maddiboyina, Balaji;Jhawat, Vikas;Nakkala, Ramya Krishna;Desu, Prasanna Kumar;Gandhi, Sivaraman. And the article was included in Progress in Biomaterials in 2021.Safety of Glyceryl monostearate The following contents are mentioned in the article:

Repaglinide, a member of the meglitinide class of drugs, is a new anti-diabetic agent that is utilized as an oral hypoglycemic agent. Using glyceryl monostearate, cetyl palmitate, and tristearin as lipids and poloxamer 188 as a surfactant, repaglinide-loaded solid lipid nanoparticles were created. Solid lipid nanoparticles were prepared utilizing an o/w microemulsion technique, which included the lipids glyceryl monostearate and tristearin, as well as waxes such as cetyl palmitate and the surfactant poloxamer 188. The mean particle size of the solid lipid nanoparticles formed was around 339 nm, with an entrapment efficiency of 82.20%. In-vitro release studies continued to be conducted using the dialysis bag diffusion technique. Within 12 h, the cumulative drug release was 88.4%. The results indicate that repaglinide was released more slowly from solid lipid nanoparticles made from tristearin and glyceryl monostearate in an equal ratio. Tristearin found the controlled release and extreme entrapment from other lipid carriers like glyceryl monostearate and cetyl palmitate. Differential scanning calorimetry demonstrates that repaglinide is entangled in amorphous or mol. state within solid lipid nanoparticles. SEM microscopy revealed that the produced repaglinide solid lipid nanoparticles had a spherical shape. After one month of storage at 2-8°C, short-term stability testing revealed no significant alteration. This study involved multiple reactions and reactants, such as Glyceryl monostearate (cas: 31566-31-1Safety of Glyceryl monostearate).

Glyceryl monostearate (cas: 31566-31-1) belongs to esters. Esters typically have a pleasant smell; those of low molecular weight are commonly used as fragrances and are found in essential oils and pheromones. Cyclic esters are called lactones, regardless of whether they are derived from an organic or inorganic acid. One example of an organic lactone is γ-valerolactone.Safety of Glyceryl monostearate

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

Poly(ethylene) glycol-modified, amphiphilic, siloxane-polyurethane coatings and their performance as fouling-release surfaces was written by Galhenage, Teluka P.;Webster, Dean C.;Moreira, Augusto M. S.;Burgett, Ryan J.;Stafslien, Shane J.;Vanderwal, Lyndsi;Finlay, John A.;Franco, Sofia C.;Clare, Anthony S.. And the article was included in Journal of Coatings Technology and Research in 2017.COA of Formula: C7H14O3 The following contents are mentioned in the article:

Amphiphilic siloxane-polyurethane (AmSiPU) coatings were prepared using a series of polyisocyanate prepolymers modified with polydimethyl siloxane (PDMS) and poly(ethylene glycol) (PEG). Fouling-release performance of the AmSiPU coatings was evaluated through laboratory biol. assays using several representative marine organisms. First, polyisocyanate prepolymers with compositional variation in PDMS and PEG were synthesized and characterized using Fourier transform IR spectroscopy (FTIR) and isocyanate titrations Then, the prepolymers were incorporated into coatings. Surface wettability of the coatings was evaluated using contact angle and surface energy measurements. Coatings surfaces were also characterized using attenuated total reflectance Fourier transform IR spectroscopy (ATR-FTIR), XPS, and at. force microscopy (AFM). ATR-FTIR and XPS experiments revealed that both PDMS and PEG moieties were present on the surface suggesting amphiphilic character. AFM phase images show microphase separation AmSiPU coatings show excellent fouling-release performance toward bacteria (Cellulophaga lytica), the diatoms (Navicula incerta), and the green algae (Ulva linza), demonstrating comparable or superior performance to many com. amphiphilic fouling-release coatings. Despite the incorporation of hydrophilic PEG, AmSiPU coatings show good macrofouling release which is often challenging with amphiphilic coating systems. This study involved multiple reactions and reactants, such as Ethyl 3-ethoxypropanoate (cas: 763-69-9COA of Formula: C7H14O3).

Ethyl 3-ethoxypropanoate (cas: 763-69-9) belongs to esters. Carboxylic acid esters of low molecular weight are colourless, volatile liquids with pleasant odours, slightly soluble in water. Liquid esters of low volatility serve as softening agents for resins and plastics. Esters also include many industrially important polymers. Polymethyl methacrylate is a glass substitute sold under the names Lucite and Plexiglas; polyethylene terephthalate is used as a film (Mylar) and as textile fibres sold as Terylene, Fortrel, and Dacron.COA of Formula: C7H14O3

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

Dataset on analytical characterization of bioactive components from Azadirachta indica, Canna indica, Magnifera indica and Moringa oleifera leaf extracts and their applications in nanoparticles biosynthesis was written by Bolade, Oladotun P.;Williams, Akan B.;Benson, Nsikak U.. And the article was included in Data in Brief in 2021.Recommanded Product: 2253-73-8 The following contents are mentioned in the article:

This paper presents data on the bioactive phytoconstituents in Azadirachta indica, Canna indica, Magnifera indica, and Moringa oleifera analyzed using quant. and qual. phytochem. screening methods, Fourier Transform IR Spectroscopy and Gas Chromatog.-Mass Spectrometry (GC-MS). Extracts were prepared in water, ethanol (EtOH) and EtOH:water mix. Identification of bioactive components was based on their spectral data and retention times compared with National Institute of Standards and Technol. (NIST) mass spectral library. The most prominent absorption bands indicated are O-H stretching vibration, C-H stretch of polyols, aromatic C=C stretching vibration, O-H stretch of polyols, C-H stretching vibration and C-OH polyols. The GC-MS characterization for A. indica showed the presence of phenols, organic acids and carbohydrates with cannabidiol as the most abundant. Crude extracts of M. oleifera showed six phenolic compounds with 4-hydroxy-bezoic acid and cannabidiol present prominently. Six phenolic phytoconstituents were identified in M. indica extracts with 1,2,3-benzenetriol as the major polyphenolic compound Biogenic iron oxide nanoparticles were synthesized and the formation was confirmed using a UV spectrometer (UV-3000 ORI, Germany) between 200 and 800 nm spectral range. X-ray diffraction (XRD) characterization of the biosynthesized iron oxide nanoparticles was carried out using Empyrean, Malvern PanAnal. This study involved multiple reactions and reactants, such as Isopropylisothiocyanate (cas: 2253-73-8Recommanded Product: 2253-73-8).

Isopropylisothiocyanate (cas: 2253-73-8) belongs to esters. Esters typically have a pleasant smell; those of low molecular weight are commonly used as fragrances and are found in essential oils and pheromones. Liquid esters of low volatility serve as softening agents for resins and plastics. Esters also include many industrially important polymers. Polymethyl methacrylate is a glass substitute sold under the names Lucite and Plexiglas; polyethylene terephthalate is used as a film (Mylar) and as textile fibres sold as Terylene, Fortrel, and Dacron.Recommanded Product: 2253-73-8

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

Dataset on analytical characterization of bioactive components from Azadirachta indica, Canna indica, Magnifera indica and Moringa oleifera leaf extracts and their applications in nanoparticles biosynthesis was written by Bolade, Oladotun P.;Williams, Akan B.;Benson, Nsikak U.. And the article was included in Data in Brief in 2021.Quality Control of Isopropylisothiocyanate The following contents are mentioned in the article:

This paper presents data on the bioactive phytoconstituents in Azadirachta indica, Canna indica, Magnifera indica, and Moringa oleifera analyzed using quant. and qual. phytochem. screening methods, Fourier Transform IR Spectroscopy and Gas Chromatog.-Mass Spectrometry (GC-MS). Extracts were prepared in water, ethanol (EtOH) and EtOH:water mix. Identification of bioactive components was based on their spectral data and retention times compared with National Institute of Standards and Technol. (NIST) mass spectral library. The most prominent absorption bands indicated are O-H stretching vibration, C-H stretch of polyols, aromatic C=C stretching vibration, O-H stretch of polyols, C-H stretching vibration and C-OH polyols. The GC-MS characterization for A. indica showed the presence of phenols, organic acids and carbohydrates with cannabidiol as the most abundant. Crude extracts of M. oleifera showed six phenolic compounds with 4-hydroxy-bezoic acid and cannabidiol present prominently. Six phenolic phytoconstituents were identified in M. indica extracts with 1,2,3-benzenetriol as the major polyphenolic compound Biogenic iron oxide nanoparticles were synthesized and the formation was confirmed using a UV spectrometer (UV-3000 ORI, Germany) between 200 and 800 nm spectral range. X-ray diffraction (XRD) characterization of the biosynthesized iron oxide nanoparticles was carried out using Empyrean, Malvern PanAnal. This study involved multiple reactions and reactants, such as Isopropylisothiocyanate (cas: 2253-73-8Quality Control of Isopropylisothiocyanate).

Isopropylisothiocyanate (cas: 2253-73-8) belongs to esters. Esters are widespread in nature and are widely used in industry. In nature, fats are in general triesters derived from glycerol and fatty acids. Esters are responsible for the aroma of many fruits. Cyclic esters are called lactones, regardless of whether they are derived from an organic or inorganic acid. One example of an organic lactone is γ-valerolactone.Quality Control of Isopropylisothiocyanate

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

Intratumoral delivery of IL-12 and IL-27 mRNA using lipid nanoparticles for cancer immunotherapy was written by Liu, Jin-Qing;Zhang, Chengxiang;Zhang, Xinfu;Yan, Jingyue;Zeng, Chunxi;Talebian, Fatemeh;Lynch, Kimberly;Zhao, Weiyu;Hou, Xucheng;Du, Shi;Kang, Diana D.;Deng, Binbin;McComb, David W.;Bai, Xue-Feng;Dong, Yizhou. And the article was included in Journal of Controlled Release in 2022.HPLC of Formula: 1224606-06-7 The following contents are mentioned in the article:

Cytokines are important immunotherapeutics with approved drugs for the treatment of human cancers. However, systemic administration of cytokines often fails to achieve adequate concentrations to immune cells in tumors due to dose-limiting toxicity. Thus, developing localized therapy that directly delivers immune-stimulatory cytokines to tumors may improve the therapeutic efficacy. In this study, we generated novel lipid nanoparticles (LNPs) encapsulated with mRNAs encoding cytokines including IL-12, IL-27 and GM-CSF, and tested their anti-tumor activity. We first synthesized ionizable lipid materials containing di-amino groups with various head groups (DALs). The novel DAL4-LNP effectively delivered different mRNAs in vitro to tumor cells and in vivo to tumors. Intratumoral injection of DAL4-LNP loaded with IL-12 mRNA was most potent in inhibiting B16F10 melanoma tumor growth compared to IL-27 or GM-CSF mRNAs in monotherapy. Furthermore, intratumoral injection of dual DAL4-LNP-IL-12 mRNA and IL-27 mRNA showed a synergistic effect in suppressing tumor growth without causing systematic toxicity. Most importantly, intratumoral delivery of IL-12 and IL-27 mRNAs induced robust infiltration of immune effector cells, including IFN-γ and TNF-α producing NK and CD8⁺ T cells into tumors. Thus, intratumoral administration of DAL-LNP loaded with IL-12 and IL-27 mRNA provides a new treatment strategy for cancer. This study involved multiple reactions and reactants, such as (6Z,9Z,28Z,31Z)-Heptatriaconta-6,9,28,31-tetraen-19-yl 4-(dimethylamino)butanoate (cas: 1224606-06-7HPLC of Formula: 1224606-06-7).

(6Z,9Z,28Z,31Z)-Heptatriaconta-6,9,28,31-tetraen-19-yl 4-(dimethylamino)butanoate (cas: 1224606-06-7) belongs to esters. Esters perform as high-grade solvents for a broad array of plastics, plasticizers, resins, and lacquers, and are one of the largest classes of synthetic lubricants on the commercial market. Polyesters are important plastics, with monomers linked by ester moieties. Many esters have the potential for conformational isomerism, but they tend to adopt an s-cis (or Z) conformation rather than the s-trans (or E) alternative, due to a combination of hyperconjugation and dipole minimization effects. The preference for the Z conformation is influenced by the nature of the substituents and solvent, if present. Lactones with small rings are restricted to the s-trans (i.e. E) conformation due to their cyclic structure.HPLC of Formula: 1224606-06-7

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

Identification of age-markers based on profiling of Baijiu volatiles over a two-year maturation period: Case study of Lu-flavor Baijiu was written by Zhang, Xiao-Juan;Meng, Lian-Jun;Lu, Zhen-Ming;Chai, Li-Juan;Wang, Song-Tao;Shi, Jin-Song;Shen, Cai-Hong;Xu, Zheng-Hong. And the article was included in LWT–Food Science and Technology in 2021.Category: esters-buliding-blocks The following contents are mentioned in the article:

Baijiu is a highly-valued traditional Chinese distilled alc. liquor and maturation markedly improves its sensory qualities and market value. Identification of age-markers is challenging because of the complexity of the endogenous chem. profile and the absence of exogenous components added during maturation. Here, freshly-distilled raw Lu-flavor Baijiu samples were stored for two years and non-targeted screening for age-markers based on the volatile profile characterized by solid-phase micro-extraction assisted GC-MS. The resulting volatile datasets were analyzed by partial least-squares discriminant anal., Spearman’s correlation and Random-forest decision-tree, to identify potential age-markers. The contents of long chain fatty acid Et esters varied the most during maturation, mostly being absent in freshly-distilled Baijiu, but appearing at different times. Similar behavior was observed in bottled samples matured up to four years. In addition, a slight increase in short/medium chain fatty acid ester content was observed Unsupervised PCA anal., applied only to the fatty acid Et ester dataset, was able to distinguish between bottled Baijiu samples matured for one, two, three, or four years. These age-markers may help establish a reliable model for verifying the maturation time of Lu-flavor Baijiu. This screening approach should be adaptable to other alc. liquors, for quality assessment and authenticity testing. This study involved multiple reactions and reactants, such as Isopentyl hexanoate (cas: 2198-61-0Category: esters-buliding-blocks).

Isopentyl hexanoate (cas: 2198-61-0) belongs to esters. Esters typically have a pleasant smell; those of low molecular weight are commonly used as fragrances and are found in essential oils and pheromones. Liquid esters of low volatility serve as softening agents for resins and plastics. Esters also include many industrially important polymers. Polymethyl methacrylate is a glass substitute sold under the names Lucite and Plexiglas; polyethylene terephthalate is used as a film (Mylar) and as textile fibres sold as Terylene, Fortrel, and Dacron.Category: esters-buliding-blocks

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

Solvent-free, efficient synthesis of methyl phenyl carbonate over an SBA-15 loaded Pb-Bi bimetallic catalyst was written by Wang, Songlin;Jiang, Nan;Zhang, Qiying;Li, Huabo;Niu, Hongying;Chen, Tong;Wang, Gongying. And the article was included in Microporous and Mesoporous Materials in 2022.Computed Properties of C13H10O3 The following contents are mentioned in the article:

Me Ph carbonate (MPC) is one of the versatile carbonates; in particular, it is an important component in lithium-ion batteries. In recent years, the catalytic synthesis of MPC has become an important topic, but the development of highly active catalysts is still challenging. In this study, SBA-15-loaded nano-sized Pb-Bi catalysts with different Pb/Bi molar ratios were prepared by deposition-precipitation to improve the efficiency and selectivity. To investigate the relationship between the structure and performance of the catalysts, XRD, BET, SEM-EDS, HRTEM, H₂-TPR, and XPS characterization, as well as catalytic activity and stability tests, were conducted. Results revealed that Pb-Bi/SBA-15 can efficiently catalyze the synthesis of MPC under solvent-free conditions, with the highest catalytic activity obtained over 6 Pb-1Bi/SBA-15. SBA-15 with a large pore size and a high sp. surface area was suitable as catalyst carrier, and the average diameter of Pb-Bi oxide particles was ∼3.57 nm. The addition of Bi led to the improved dispersion of active components, which were highly and evenly dispersed on the SBA-15 surface. Furthermore, an appropriate proportion of Pb and Bi on SBA-15 was conducive to the considerable enhancement of the catalytic activity. Besides, Pb-Bi/SBA-15 also exhibited good durability and recyclability, making it a promising catalytic material for the synthesis of various carbonates. This study involved multiple reactions and reactants, such as Diphenyl carbonate (cas: 102-09-0Computed Properties of C13H10O3).

Diphenyl carbonate (cas: 102-09-0) belongs to esters. Esters are widespread in nature and are widely used in industry. In nature, fats are in general triesters derived from glycerol and fatty acids. Esters are responsible for the aroma of many fruits. Esterification is the general name for a chemical reaction in which two reactants (typically an alcohol and an acid) form an ester as the reaction product. Esters are common in organic chemistry and biological materials.Computed Properties of C13H10O3

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

Metabolic engineering of cottonseed oil biosynthesis pathway via RNA interference was written by Xu, Zhongping;Li, Jingwen;Guo, Xiaoping;Jin, Shuangxia;Zhang, Xianlong. And the article was included in Scientific Reports in 2016.Safety of Methyl nonadecanoate The following contents are mentioned in the article:

Cottonseed oil is recognized as an important oil in food industry for its unique characters: low flavor reversion and the high level of antioxidants (Vitamin) as well as unsaturated fatty acid. However, the cottonseed oil content of cultivated cotton (Gossypium hirsutum) is only around 20%. In this study, we modified the accumulation of oils by the down-regulation of phosphoenolpyruvate carboxylase 1 (GhPEPC1) via RNA interference in transgenic cotton plants. The qRT-PCR and enzyme activity assay revealed that the transcription and expression of GhPEPC1 was dramatically down-regulated in transgenic lines. Consequently, the cottonseed oil content in several transgenic lines showed a significant (P < 0.01) increase (up to 16.7%) without obvious phenotypic changes under filed condition when compared to the control plants. In order to elucidate the mol. mechanism of GhPEPC1 in the regulation of seed oil content, we quantified the expression of the carbon metabolism related genes of transgenic GhPEPC1 RNAi lines by transcriptome anal. This anal. revealed the decrease of GhPEPC1 expression led to the increase expression of triacylglycerol biosynthesis-related genes, which eventually contributed to the lipid biosynthesis in cotton. This result provides a valuable information for cottonseed oil biosynthesis pathway and shows the potential of creating high cottonseed oil germplasm by RNAi strategy for cotton breeding. This study involved multiple reactions and reactants, such as Methyl nonadecanoate (cas: 1731-94-8Safety of Methyl nonadecanoate).

Methyl nonadecanoate (cas: 1731-94-8) belongs to esters. Esters are widespread in nature and are widely used in industry. In nature, fats are in general triesters derived from glycerol and fatty acids. Esters are responsible for the aroma of many fruits, including apples, durians, pears, bananas, pineapples, and strawberries. Esters contain a carbonyl center, which gives rise to 120° C–C–O and O–C–O angles. Unlike amides, esters are structurally flexible functional groups because rotation about the C–O–C bonds has a low barrier. Their flexibility and low polarity is manifested in their physical properties; they tend to be less rigid (lower melting point) and more volatile (lower boiling point) than the corresponding amides. Safety of Methyl nonadecanoate

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