Tag: M.W=150-200

Wang, Delong published the artcileGuaiacol as a natural melanin biosynthesis inhibitor to control northern corn leaf blight, Recommanded Product: Benzyl acetate, the main research area is guaiacol natural melanin essential oil corn leaf blight; DHN melanin biosynthesis inhibitor; guaiacol; northern corn leaf blight; plant essential oil compounds.

BACKGROUND : The natural 1,8-dihydroxynaphthalene (DHN) melanin biosynthesis inhibitors (MBIs) are one of the promising approaches to the integrated management of plant diseases but have received scarce attention until now. Herein, to explore the natural DHN MBIs used in the control of northern corn leaf blight (NCLB), a library of 53 essential oil compounds was used to screen the MBIs against Exserohilum turcicum, the causal pathogen of NCLB, using tricyclazole as a reference compound RESULTS : The results of morphol. change in the colony, thermogravimetric anal., UV-visible spectroscopy, and transmission electron microscopy confirmed that guaiacol could effectively inhibit the melanin production at 50 μg/mL under in vitro conditions. The in vitro bioassay results indicated that this inhibition effect was concentration-dependent and the min. inhibition concentration of guaiacol was 50 μg/mL. The in vivo exptl. results demonstrated that guaiacol significantly inhibited appressorium formation and penetration on corn leaf sheaths at the concentration of 500 μg/mL. The pot experiment results revealed that there were no differences between guaiacol (500 μg/mL) and tricyclazole (100 μg/mL) in control efficacy. The enzymic assay suggested that guaiacol might exert the activity through inhibiting DHN polymerization to form melanins, which was distinct from tricyclazole. CONCLUSIONS : Taken together, this study screened out guaiacol as a natural MBI from 53 essential oil compounds and verified its effectiveness in the control of NCLB at 500 μg/mL. Above all, this research opened an avenue for exploring natural DHN MBIs in the integrated management of plant diseases. 2022 Society of Chem. Industry.

Pest Management Science published new progress about Color. 140-11-4 belongs to class esters-buliding-blocks, name is Benzyl acetate, and the molecular formula is C9H10O2, Recommanded Product: Benzyl acetate.

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

Cecchi, Lorenzo published the artcileExploitation of virgin olive oil by-products (Olea europaea L .): phenolic and volatile compounds transformations phenomena in fresh two-phase olive pomace (′alperujo′) under different storage conditions, Formula: C11H22O2, the main research area is olive oil Olea europaea phenolic volatile compound storage condition; HS-SPME-GC-MS; nutraceuticals; olive mill by-products; olive pomace storage; polyphenols; secoiridoids.

Much effort has recently been spent for re-using virgin olive oil byproducts as nutraceutical ingredients for human diet thanks to their richness in bioactive phenols, but their management is not easy for producers. We aimed to provide useful information for a better management of fresh olive pomace before drying, by studying the phenolic and volatile compounds transformations phenomena of fresh olive pomace stored under different conditions planned to simulate controlled and uncontrolled temperature conditions in olive oil mills. The evolution of the phenolic and volatile compounds was studied by high-performance liquid chromatog.-diode array detector mass spectrometry (HPLC-DAD-MS) and headspace solid-phase microextraction gas chromatog.-mass spectrometry (HS-SPME-GC-MS). The phenolic profile varied rapidly during storage: the verbascoside content decreased about 70% after 17 days even at 4 °C, while the content of simple phenols such as hydroxytyrosol and caffeic acid increased over time. The low temperature was able to slow down these phenomena. A total of 94 volatile organic compounds (VOCs) were detected in the fresh olive pomace, with a prevalence of lipoxygenase (LOX) VOCs (78%), mainly aldehydes (19 490.9μg kg-1) despite the higher number of alcs. A decrease in LOX volatiles and a quick development of the ones linked to off-flavors (carboxylic acids, alcs., acetates) were observed, in particular after 4 days of storage at room temperature Only storage at 4 °C allowed these phenomena to be slowed down. To preserve the natural phenolic phytocomplex of fresh olive pomace before drying and to avoid off-flavors development, storage in open containers must be avoided and a short storage in cold rooms (7-10 days) is to be preferred. 2021 The Authors. Journal of The Science of Food and Agriculture published by John Wiley & Sons Ltd on behalf of Society of Chem. Industry.

Journal of the Science of Food and Agriculture published new progress about Alcohols Role: BSU (Biological Study, Unclassified), PRP (Properties), BIOL (Biological Study). 110-42-9 belongs to class esters-buliding-blocks, name is Methyl decanoate, and the molecular formula is C11H22O2, Formula: C11H22O2.

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

Cecchi, Lorenzo published the artcileExploitation of virgin olive oil by-products (Olea europaea L .): phenolic and volatile compounds transformations phenomena in fresh two-phase olive pomace (′alperujo′) under different storage conditions, Category: esters-buliding-blocks, the main research area is olive oil Olea europaea phenolic volatile compound storage condition; HS-SPME-GC-MS; nutraceuticals; olive mill by-products; olive pomace storage; polyphenols; secoiridoids.

Much effort has recently been spent for re-using virgin olive oil byproducts as nutraceutical ingredients for human diet thanks to their richness in bioactive phenols, but their management is not easy for producers. We aimed to provide useful information for a better management of fresh olive pomace before drying, by studying the phenolic and volatile compounds transformations phenomena of fresh olive pomace stored under different conditions planned to simulate controlled and uncontrolled temperature conditions in olive oil mills. The evolution of the phenolic and volatile compounds was studied by high-performance liquid chromatog.-diode array detector mass spectrometry (HPLC-DAD-MS) and headspace solid-phase microextraction gas chromatog.-mass spectrometry (HS-SPME-GC-MS). The phenolic profile varied rapidly during storage: the verbascoside content decreased about 70% after 17 days even at 4 °C, while the content of simple phenols such as hydroxytyrosol and caffeic acid increased over time. The low temperature was able to slow down these phenomena. A total of 94 volatile organic compounds (VOCs) were detected in the fresh olive pomace, with a prevalence of lipoxygenase (LOX) VOCs (78%), mainly aldehydes (19 490.9μg kg-1) despite the higher number of alcs. A decrease in LOX volatiles and a quick development of the ones linked to off-flavors (carboxylic acids, alcs., acetates) were observed, in particular after 4 days of storage at room temperature Only storage at 4 °C allowed these phenomena to be slowed down. To preserve the natural phenolic phytocomplex of fresh olive pomace before drying and to avoid off-flavors development, storage in open containers must be avoided and a short storage in cold rooms (7-10 days) is to be preferred. 2021 The Authors. Journal of The Science of Food and Agriculture published by John Wiley & Sons Ltd on behalf of Society of Chem. Industry.

Journal of the Science of Food and Agriculture published new progress about Alcohols Role: BSU (Biological Study, Unclassified), PRP (Properties), BIOL (Biological Study). 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

Cecchi, Lorenzo published the artcileExploitation of virgin olive oil by-products (Olea europaea L .): phenolic and volatile compounds transformations phenomena in fresh two-phase olive pomace (′alperujo′) under different storage conditions, Quality Control of 123-29-5, the main research area is olive oil Olea europaea phenolic volatile compound storage condition; HS-SPME-GC-MS; nutraceuticals; olive mill by-products; olive pomace storage; polyphenols; secoiridoids.

Much effort has recently been spent for re-using virgin olive oil byproducts as nutraceutical ingredients for human diet thanks to their richness in bioactive phenols, but their management is not easy for producers. We aimed to provide useful information for a better management of fresh olive pomace before drying, by studying the phenolic and volatile compounds transformations phenomena of fresh olive pomace stored under different conditions planned to simulate controlled and uncontrolled temperature conditions in olive oil mills. The evolution of the phenolic and volatile compounds was studied by high-performance liquid chromatog.-diode array detector mass spectrometry (HPLC-DAD-MS) and headspace solid-phase microextraction gas chromatog.-mass spectrometry (HS-SPME-GC-MS). The phenolic profile varied rapidly during storage: the verbascoside content decreased about 70% after 17 days even at 4 °C, while the content of simple phenols such as hydroxytyrosol and caffeic acid increased over time. The low temperature was able to slow down these phenomena. A total of 94 volatile organic compounds (VOCs) were detected in the fresh olive pomace, with a prevalence of lipoxygenase (LOX) VOCs (78%), mainly aldehydes (19 490.9μg kg-1) despite the higher number of alcs. A decrease in LOX volatiles and a quick development of the ones linked to off-flavors (carboxylic acids, alcs., acetates) were observed, in particular after 4 days of storage at room temperature Only storage at 4 °C allowed these phenomena to be slowed down. To preserve the natural phenolic phytocomplex of fresh olive pomace before drying and to avoid off-flavors development, storage in open containers must be avoided and a short storage in cold rooms (7-10 days) is to be preferred. 2021 The Authors. Journal of The Science of Food and Agriculture published by John Wiley & Sons Ltd on behalf of Society of Chem. Industry.

Journal of the Science of Food and Agriculture published new progress about Alcohols Role: BSU (Biological Study, Unclassified), PRP (Properties), BIOL (Biological Study). 123-29-5 belongs to class esters-buliding-blocks, name is Ethyl nonanoate, and the molecular formula is C11H22O2, Quality Control of 123-29-5.

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

He, Qi published the artcileA superchilling storage-ice glazing (SS-IG) of Atlantic salmon (Salmo salar) sashimi fillets using coating protective layers of Zanthoxylum essential oils (EOs), Application of Benzyl acetate, the main research area is superchilling storage ice coating protective layers zanthoxylum essential oil.

Sashimi is a perishable aquatic product. Low temperature offers a promising avenue to preserve sashimi, but traditional frozen methods can hardly avoid the undesirable effects caused by fluids’ freezing. The aim of this work is to establish a superchilling storage-ice glazing (SS-IG) approach using essential oils (EOs) from Zanthoxylum acanthopodium (ZA) and Zanthoxylum simulans (ZS) to preserve sashimi. Different compound of EOs were identified using GC-MS. Twelve main active compositions accounted for 52.85% and 63.19% of the total oils. Fresh salmon sashimi fillets were coated by 0.3% of EOs and stored at (-1 ± 0.2) °C for 25 days. EOs-based ice-glazing layers were formed on the surface of sashimi, while the fluids in sashimi samples still kept at liquid state. As the results, the microstructure and sensory quality of sashimi were maximally maintained. The growth of microbial populations and production of total volatile basic nitrogen (TVB-N) in sashimi were inhibited. The degree of lipid oxidation in sashimi was limited at a low range. The results revealed this SS-IG approach can effectively retain the overall quality of sashimi during storage and will be a promising means for the development of sushi industry.

Aquaculture published new progress about Oxygenated terpenes Role: BSU (Biological Study, Unclassified), BIOL (Biological Study). 140-11-4 belongs to class esters-buliding-blocks, name is Benzyl acetate, and the molecular formula is C9H10O2, Application of Benzyl acetate.

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

Limaee, Nargess Yousefi published the artcileSelective Recognition of Herbicides in Water Using a Fluorescent Molecularly Imprinted Polymer Sensor, Category: esters-buliding-blocks, the main research area is dichlorophenoxacetic acid herbicide water fluorescent molecularly imprinted polymer sensor; 1,8-naphthalimide; 2,4-dichlorophenoxyacetic acid; Fluorescent optosensor; Molecularly imprinted polymer.

Fluorescent molecularly imprinted polymer (FMIP) optosensor was utilized for the selective identification of 2,4- dichlorophenoxacetic acid (2,4-D) due to worldwide pollution caused by using herbicides in agricultural industry. In this regards, two derivatives of polymerizable 1,8-naphthalimide namely, 1,8-naphthalimide containing thiourea (NI) and di-Et amine tagged 1,8-naphthalimide (NII) were used as the receptors and 2,4-D was applied as a template. Also, precipitation polymerization was applied to prepare the fluorescent molecularly imprinted polymer (FMIP). The morphol., structural and thermal anal. was carried out using SEM, TEM, EDS, BET, FTIR, DSC and TGA for characterizing the fluorescent optosensor. The adsorption efficiency of FMIP and FNIP was studied using Langmuir, Freundlich, BET and Redlich Peterson isotherms. The results represented that the adsorption of 2,4-D on FMIP and FNIP agreed the Freundlich adsorption isotherm with correlation coefficient of 0.9935 and 0.9801, resp. The prepared sensor was able for the selective determination of 2,4-D salt in the linear range of 5 × 10-7 -1 × 10-3 M with a limit of detection of 16.8 nM. The present study revealed that the FMIP prepared by 1,8-naphthalimide derivative (NI) could potentially recognize the trace concentration of 2,4-D.

Journal of Fluorescence published new progress about Fluorescent biosensors. 140-11-4 belongs to class esters-buliding-blocks, name is Benzyl acetate, and the molecular formula is C9H10O2, Category: esters-buliding-blocks.

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

Xia, Yanan published the artcileNovel insight into physicochemical and flavor formation in koumiss based on microbial metabolic network, COA of Formula: C10H20O2, the main research area is flavor koumiss microbial metabolic network; Core microbiota; Differential metabolites; Koumiss; Metabolic pathway; Volatile metabolites.

Koumiss, naturally fermented mares milk, has a unique flavor that is affected by its resident microflora. In this study, we analyzed time-dependent changes in the microbiota and volatile metabolite profiles of koumiss using high-throughput sequencing and liquid-extraction iquid extraction-gas chromatog.-mass spectrometry. The dominant microrganisms in mare milk were Enterobacter and Rhodotorula, which were gradually suppressed, then Lactobacillus and Dekkera became the core microorganisms of koumiss. 17 FAA and 52 volatile organic compounds (VOCs) were identified during koumiss fermentation, including 19 odor active compounds and 15 differential metabolites of VOCs, mainly acids and esters, and their anabolism showed significant pos. correlations with Lactobacillus and Dekkera. The microbial metabolic network showed that Lactobacillus and Dekkera were identified as the most important flavor-producing microbiota due to their significantly pos. correlation with the formation of 33 and 28 flavor metabolites, resp. These microorganisms produce enzymes that catalyze a series of metabolic pathways that generate VOCs, including carbohydrate metabolism, amino acid metabolism, and fatty acid biosynthesis. Our findings provide new guidance for the screening and application of flavor-producing microorganisms in koumiss.

Food Research International published new progress about Anabolism. 106-32-1 belongs to class esters-buliding-blocks, name is Ethyl octanoate, and the molecular formula is C10H20O2, COA of Formula: C10H20O2.

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

Park, Ho Young published the artcileProperties of bioliquids and their impacts on combustion and boiler operation, Quality Control of 110-42-9, the main research area is bioliquid combustion boiler operation property.

This study reports the results of a detailed anal. of 203 samples of bioliquid used as a substitute for heavy fuel oil in oil-fired power plants. Bioliquid is a mixture of various vegetable oils, animal fats and its byproducts. The heating value of bioliquid is approx. the same as that of heavy fuel oil; however, bioliquid has significantly less N and S components and exhibits better combustion reactivity. For a com. electricity generation, demonstration tests firing bioliquid in 75, 90, and 100 MW oil-fired boilers were conducted, and the results were compared with those obtained by firing heavy fuel oil. Further, the impacts of bioliquid fuel characteristics on combustion and boiler operation were also investigated. During the bioliquid firing, the heat absorption in the furnace decreased and the furnace exit gas temperature increased in comparison to the heavy fuel oil firing. No serious problems occurred in the boiler operation, and NOx and SOx emissions remarkably decreased. With minor modifications on the fuel transfer system and atomization devices, bioliquid could successfully replace heavy fuel oil in the existing oil-fired boilers. The limited values for 18 fuel properties of bioliquid are suggested by considering the stable boiler operation and environmental safety.

Energy (Oxford, United Kingdom) published new progress about Boilers, oil-fired. 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

Mhlongo, Msizi I. published the artcileProfiling of Volatile Organic Compounds from Four Plant Growth-Promoting Rhizobacteria by SPME-GC-MS: A Metabolomics Study, Safety of Methyl decanoate, the main research area is PGPR volatile organic compound metabolomics profiling SPME GCMS; metabolomics profiling; multivariate data analysis (MVDA); plant growth promoting rhizobacteria (PGPR); solid-phase micro-extraction gas chromatography mass spectrometry (SPME–GC–MS); volatile organic compounds (VOCs).

The rhizosphere microbiome is a major determinant of plant health. Plant-beneficial or plant growth-promoting rhizobacteria (PGPR) influence plant growth, plant development and adaptive responses, such as induced resistance/priming. These new eco-friendly choices have highlighted volatile organic compounds (biogenic VOCs) as a potentially inexpensive, effective and efficient substitute for the use of agrochems. Secreted bacterial VOCs are low mol. weight lipophilic compounds with a low b.p. and high vapor pressures. As such, they can act as short- or long-distance signals in the rhizosphere, affecting competing microorganisms and impacting plant health. In this study, secreted VOCs from four PGPR strains (Pseudomonas koreensis (N19), Ps. fluorescens (N04), Lysinibacillus sphaericus (T19) and Paenibacillus alvei (T22)) were profiled by solid-phase micro-extraction gas chromatog. mass spectrometry (SPME-GC-MS) combined with a multivariate data anal. Metabolomic profiling with chemometric analyses revealed novel data on the composition of the secreted VOC blends of the four PGPR strains. Of the 121 annotated metabolites, most are known as bioactives which are able to affect metabolism in plant hosts. These VOCs belong to the following classes: alcs., aldehydes, ketones, alkanes, alkenes, acids, amines, salicylic acid derivatives, pyrazines, furans, sulfides and terpenoids. The results further demonstrated the presence of species-specific and strain-specific VOCs, characterized by either the absence or presence of specific VOCs in the different strains. These mols. could be further investigated as biomarkers for the classification of an organism as a PGPR and selection for agricultural use.

Metabolites published new progress about Alcohols Role: ANT (Analyte), PUR (Purification or Recovery), ANST (Analytical Study), PREP (Preparation). 110-42-9 belongs to class esters-buliding-blocks, name is Methyl decanoate, and the molecular formula is C11H22O2, Safety of Methyl decanoate.

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

Alexpandi, Rajaiah published the artcileAnti-QS mediated anti-infection efficacy of probiotic culture-supernatant against Vibrio campbellii infection and the identification of active compounds through in vitro and in silico analyses, Recommanded Product: Methyl decanoate, the main research area is Vibrio campbellii infection probiotic culture supernatant active compound QS.

The main intent of the present study was to identify the novel anti-quorum sensing (anti-QS) compounds from probiotic product (Rhodomax) and assess their anti-infection effect of against Vibrio campbellii infection using tomato clownfish (Amphiprion frenatus). In this study, rhodomax probiotic-product was investigated for its active compounds’ prediction through in silico anal. Initially, anti-QS activity of probiotic-supernatant was authenticated by decrease in bioluminescence production of V. campbellii. As expected, the probiotic-supernatant effectively inhibited the biofilm formation, swimming motility, and hydrophobicity of V. campbellii at 20μg/mL concentration During in vivo trail with tomato clownfish, probiotic-supernatant (20 ppm) treatment showed a significant increase in the survival rates to the level of 88% against V. campbellii infection. Further, the reduced colonization of V. campbellii inside the probiotic-supernatant treated animals correlates the anti-infection activity. The histopathol. differences in tissue levels such as the gill, intestine, and kidney of infected and probiotic-supernatant treated animals were also support the in-vivo trial, which strongly revealed the disease protection of rhodomax-supernatant against V. campbellii infection. Notably, the docking anal. revealed that the anti-QS mediated anti-infection activity of rhodomax-supernatant against V. campbellii infection is accomplished by the presence of active metabolites such as,4-Dihydro-7-methoxy-2,2-dimethyl-2H-1-benzopyran-3,4-diol and Pyrrolo(1,2-a)pyrazine-1,4-dione, hexahydro-3-(1-methylethyl). Hence, we suggest that these two active metabolites could be the novel alternative agents to control V. campbellii-associated infections in aquaculture.

Biocatalysis and Agricultural Biotechnology published new progress about Amino acids Role: BSU (Biological Study, Unclassified), BIOL (Biological Study). 110-42-9 belongs to class esters-buliding-blocks, name is Methyl decanoate, and the molecular formula is C11H22O2, Recommanded Product: Methyl decanoate.

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