Month: December 2022

Marakis, Georgios published the artcileFatty acid profile of processed foods in Greece with focus on trans fatty acids, Computed Properties of 110-42-9, the main research area is trans fatty acid processed food.

Abstract: The adverse health effects of trans fatty acids (TFA) are well recognized. The Commission Regulation (EU) 2019/649 specifies that foods should not contain more than 2 g of industrially produced TFA (i-TFA) per 100 g of fat. This study aimed to investigate the fatty acid profile, with focus on TFA and i-TFA, of foods widely consumed in Greece that are purported to contain high TFA concentrations Sweet and savoury (i.e. non-sweet), prepacked and non-prepacked (i.e. loose) processed foods (N = 140) were sampled. After lipid extraction, the fatty acid profile of each sample was determined by gas chromatog. Estimation of ruminant TFA (r-TFA) was based on butyric acid values. i-TFA was assessed after subtraction of r-TFA from total TFA. Both total and i-TFA contents of cakes, biscuits, croissants and doughnuts on average were low (< 2% of total fat), even though the saturated fat content of some products from these food groups was high. Pies and pastries made with puff and shortcrust pastry had the highest i-TFA content. About 15.7% of all samples had an i-TFA content that exceeded the 2% limit set in foods by the new Commission Regulation (EU) 2019/649. Meat products and French fries had i-TFA levels that did not exceed 1% of total fat. In view of the lack of data on TFA content of foods in Greece, these results highlight the necessity to improve their nutritional quality and provide guidance for planning future targeted inspections regarding the TFA content of foods. Journal fuer Verbraucherschutz und Lebensmittelsicherheit published new progress about Bakery cakes. 110-42-9 belongs to class esters-buliding-blocks, name is Methyl decanoate, and the molecular formula is C11H22O2, Computed Properties of 110-42-9.

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

Ling, Meng-Qi published the artcileFlavor profile evolution of bottle aged rose and white wines sealed with different closures, Category: esters-buliding-blocks, the main research area is rose white wine bottle aging closure flavor evolution; bottle aging; closures; flavor profile; rosé wines; white wines.

Bottle aging is the final stage before wines are drunk, and is considered as a maturation time when many chem. changes occur. To get a better understanding of the evolution of wines’ flavor profile, the flavor compounds (phenolic and volatile compounds), dissolved oxygen (DO), and flavor characters (OAVs and chromatic parameters) of rose and dry white wines bottled with different closures were determined after 18 mo’ bottle aging. The results showed the main phenolic change trends of rose wines were decreasing while the trends of white wines were increasing, which could be the reason for their unique DO changing behaviors. Volatile compounds could be clustered into fluctuating, increasing, and decreasing groups using k-means algorithm. Most volatile compounds, especially some long-chain aliphatic acid esters (octanoates and decanoates), exhibited a lower decrease rate in rose wines sealed with natural corks and white wines with screw caps. After 18 mo of bottle aging, wines treated with natural corks and their alternatives could be distinguished into two groups based on flavor compounds via PLS-DA. As for flavor characters, the total intensity of aroma declined obviously compared with their initial counterparts. Rose wines exhibit visual difference in color, whereas such a phenomenon was not observed in white wines.

Molecules published new progress about Autoxidation. 123-29-5 belongs to class esters-buliding-blocks, name is Ethyl nonanoate, and the molecular formula is C11H22O2, Category: esters-buliding-blocks.

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

Ling, Meng-Qi published the artcileFlavor profile evolution of bottle aged rose and white wines sealed with different closures, Application of Methyl octanoate, the main research area is rose white wine bottle aging closure flavor evolution; bottle aging; closures; flavor profile; rosé wines; white wines.

Bottle aging is the final stage before wines are drunk, and is considered as a maturation time when many chem. changes occur. To get a better understanding of the evolution of wines’ flavor profile, the flavor compounds (phenolic and volatile compounds), dissolved oxygen (DO), and flavor characters (OAVs and chromatic parameters) of rose and dry white wines bottled with different closures were determined after 18 mo’ bottle aging. The results showed the main phenolic change trends of rose wines were decreasing while the trends of white wines were increasing, which could be the reason for their unique DO changing behaviors. Volatile compounds could be clustered into fluctuating, increasing, and decreasing groups using k-means algorithm. Most volatile compounds, especially some long-chain aliphatic acid esters (octanoates and decanoates), exhibited a lower decrease rate in rose wines sealed with natural corks and white wines with screw caps. After 18 mo of bottle aging, wines treated with natural corks and their alternatives could be distinguished into two groups based on flavor compounds via PLS-DA. As for flavor characters, the total intensity of aroma declined obviously compared with their initial counterparts. Rose wines exhibit visual difference in color, whereas such a phenomenon was not observed in white wines.

Molecules published new progress about Autoxidation. 111-11-5 belongs to class esters-buliding-blocks, name is Methyl octanoate, and the molecular formula is C9H18O2, Application of Methyl octanoate.

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

Goswami, Lalit published the artcileA novel integrated biodegradation-microfiltration system for sustainable wastewater treatment and energy recovery, Quality Control of 929-77-1, the main research area is integrated biodegradation microfiltration system wastewater treatment energy recovery; Biodiesel production; Bioremediation; Ceramic membrane; Industrial wastewater treatment; Rhodococcus opacus.

This work assessed the treatment of wastewater generated from three different industries viz., paper and pulp, biomass gasification and dairy by biodegradation followed by membrane filtration. Batch biodegradation was first carried out using wastewater as the potential substrate for oleaginous Rhodococcus opacus with lipid accumulation intracellular; subsequently, a microfiltration system was applied to recover the bacterial biomass grown as well as for residual COD (COD) removal from the effluent. The combined process showed excellent results in terms of COD removal from the industrial wastewaters, with the values 56.8%, 46.1% and 68.9% for dairy, paper and pulp and biomass gasification wastewaters, resp., by biodegradation These values were further improved to 92.7%, 87.6% and 88.2%, resp., following the microfiltration step performed by employing a low-cost ceramic membrane. In addition, lipids accumulated by the bacterium were extracted and characterized for biodiesel production potential. Lipid characterization using 1H NMR confirmed the presence of saturated fatty acids. Gas chromatog. anal. of the transesterified lipids revealed the presence of Me palmitate and Me stearate. In addition, the estimated properties of the transesterified product affirmed its potential for biofuel application.

Journal of Hazardous Materials published new progress about Autoxidation. 929-77-1 belongs to class esters-buliding-blocks, name is Methyl docosanoate, and the molecular formula is C23H46O2, Quality Control of 929-77-1.

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

Ta-Shma, Rachel published the artcileAn autoxidation study of C2 substituted pyrimidine amino reductones, Product Details of C9H16O4, the main research area is autoxidation pyrimidine amino reductone.

Three pyrimidine derivatives I (R = Me, H, SMe) , differing from isouramil(I; R = OH) and divicine (I; R = NH2) at C2, were synthesized and their autoxidation rates measured spectrophotometrically. The autoxidation rates of all five pyrimidines were correlated with σ p + values (rho = -1.28, r2 = 0.949).

Tetrahedron published new progress about Autoxidation. 61675-94-3 belongs to class esters-buliding-blocks, name is Ethyl 2-((tetrahydro-2H-pyran-2-yl)oxy)acetate, and the molecular formula is C9H16O4, Product Details of C9H16O4.

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

Kewlani, Pushpa published the artcileSaturated and polyunsaturated fatty acids rich populations of Prinsepia utilis Royle in Western Himalaya, COA of Formula: C23H46O2, the main research area is Prinsepia seed saturated polyunsaturated fatty acid DPPH antioxidant; altitude; antioxidant; edaphic factors; fatty acids.

The study aims to identify the fatty acid composition in Prinsepia utilis seeds collected from diverse populations of Western Himalaya, India. The seeds contained higher saturated fatty acid (SFA-43.09%; Average of all populations) followed by polyunsaturated fatty acid (PUFA – 29.57%) and monounsaturated fatty acid (MUFA – 25.53%), however variations among growing populations was measured. The correlation anal. reveals a significant (p < 0.05) neg. connection between 10-Octadecenoic acid Me ester (FA1), and altitude. Edaphic factors like available nitrogen showed significantly (p < 0.05) but the neg. correlation with cis-11-Eicosenoic acid, Me ester (FA10; p < 0.001), Docosanoic acid, Me ester (FA11; p < 0.05), Heptadecanoic acid, Me ester (FA14; p < 0.05), and Tricosanoic acid, Me ester (FA29; p < 0.05). Antioxidant activity did not show any variation in the seed oil of different populations but varied among the concentrations (5-50μL) used. IC50 values of DPPH activity was significantly (p < 0.05) varied connect ranged from 11.31-24.21μL/mL among the different populations. These variations in fatty acid composition and IC50 values of the DPPH activity can be one of the indicators for selecting a promising population that would be harnessed for its potential in nutraceuticals and cosmeceuticals industries. Journal of Oleo Science published new progress about Antioxidants. 929-77-1 belongs to class esters-buliding-blocks, name is Methyl docosanoate, and the molecular formula is C23H46O2, COA of Formula: C23H46O2.

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

Miceli, Natalizia published the artcilePhytochemical Profile and Antioxidant Activity of the Aerial Part Extracts from Matthiola incana subsp. rupestris and subsp. pulchella (Brassicaceae) Endemic to Sicily, Recommanded Product: Methyl decanoate, the main research area is Matthiola phytocem profile antioxidant; Matthiola incana; Sicilian vascular flora; biological activity; chemical composition; infraspecific taxa.

As part of a project aimed at investigating the Matthiola taxa endemic to Sicily (Italy), this study focused on Matthiola incana, an edible species used in the traditional medicine of various countries. Herein, the characterization of phenolic and volatile compounds, the antioxidant capacity in vitro (1,1-diphenyl-2-picrylhydrazil (DPPH), reducing power and Fe2+ chelating activity assays) and the toxicity test (Artemia salina lethality bioassay) of the hydroalcoholic extracts from the aerial parts of M. incana subsp. rupestris from Mt. Pellegrino (Palermo) and Mt. Erice (Trapani), and of M. incana subsp. pulchella are reported. The results are compared with those previously shown for M. incana subsp. incana, to achieve a comprehensive overview of the three subspecies. The HPLC-PDA/ESI-MS and SPME-GC/MS analyses led to the identification of 13 phenolics and 54 volatile compounds Differences in the qual.-quant. profile of these phytochems. have been highlighted between the M. incana subspecies. The antioxidant tests showed different activity for the extracts, which were found to possess better chelating properties. At last, none of the tested extracts displayed toxicity against brine shrimp larvae. These findings enrich the knowledge on the Matthiola taxa growing wild in Sicily, both from the strictly systematic point of view and for the possible applications as sources bioactive compounds that can be used in the nutraceutical field.

Chemistry & Biodiversity published new progress about Antioxidants. 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

Barman, Monica published the artcileDehydrated jasmine flowers obtained through natural convective solar drying retain scent volatiles and phenolics – A prospective for added-value utility, Formula: C9H10O2, the main research area is protocatechuic caffeic vanillic acid jasmine flower solar drying.

Although season-specific, Jasminum spp. are cultivated com. for their sweet-scented flowers and their postharvest utility in various value-added products. However, to ensure year-round availability of quality floral biomass, jasmines are to be dehydrated and stored. In the present study, we attempted to dehydrate fresh jasmine flowers using a custom-made natural convective solar drying and compared the outcome with four widely used drying methods namely, sun drying, shade drying, oven drying and freeze drying. Subsequently, the retention capacities of scent volatiles and phenolics in dehydrated flowers of Jasminum auriculatum and J. sambac were compared. Total phenolic contents (TPC) were found to be high in both freeze dried and natural convective dried samples whereas the antioxidant capacity was high in natural convective dried samples. Phenolic acids viz. protocatechuic acid, vanillic acid, and caffeic acid were detected; these phenolic acids were shown to retain in higher amount in natural convective dried samples. Further, freeze and convective-dried flowers were also shown to retain maximum contents of scent volatiles. These observations suggest that custom-made low-cost natural convective solar dryer could be explored at large scale to obtain good quality dried flowers of Jasminum spp. for added-value utility.

Industrial Crops and Products published new progress about Antioxidants. 140-11-4 belongs to class esters-buliding-blocks, name is Benzyl acetate, and the molecular formula is C9H10O2, Formula: C9H10O2.

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

Vaglienti, Maria V. published the artcileQuantification of reactive oxygen species using 2′,7’dichlorofluorescein diacetate probe and flow-cytometry in muller Glial cells, Category: esters-buliding-blocks, the main research area is muller glial cell ROS DCFHDA probe.

The redox balance has an important role in maintaining cellular homeostasis. The increased generation of reactive oxygen species (ROS) promotes the modification of proteins, lipids, and DNA, which finally may lead to alteration in cellular function and cell death. Therefore, it is beneficial for cells to increase their antioxidant defense in response to detrimental insults, either by activating an antioxidant pathway like Keap1/Nrf2 or by improving redox scavengers (vitamins A, C, and E, β-carotene, and polyphenols, among others). Inflammation and oxidative stress are involved in the pathogenesis and progression of retinopathies, such as diabetic retinopathy (DR) and retinopathy of prematurity (ROP). Since Muller glial cells (MGCs) play a key role in the homeostasis of neural retinal tissue, they are considered an ideal model to study these cellular protective mechanisms. In this sense, quantifying ROS levels with a reproducible and simple method is essential to assess the contribution of pathways or mols. that participate in the antioxidant cell defense mechanism. In this article, we provide a complete description of the procedures required for the measurement of ROS with DCFH-DA probe and flow cytometry in MGCs. Key steps for flow cytometry data processing with the software are provided here, so the readers will be able to measure ROS levels (geometric means of FITC) and analyze fluorescence histograms. These tools are highly helpful to evaluate not only the increase in ROS after a cellular insult but also to study the antioxidant effect of certain mols. that can provide a protective effect on the cells.

Journal of Visualized Experiments published new progress about Antioxidants. 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, Category: esters-buliding-blocks.

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

Drinic, Zorica published the artcileEffect of pomegranate peel extract on the oxidative stability of pomegranate seed oil, Safety of Methyl docosanoate, the main research area is pomegranate peel seed oil oxidative stability; P-anisidine value; Peroxide value; Pomegranate peel extract; Pomegranate seed oil; Punicic acid; TBARS value.

Pomegranate seed oil is valuable source of bioactive compounds with health-beneficial effects, but it is sensitive to oxidation due to high content of PUFA. In order to improve stability of pomegranate seed oil, the influence of natural antioxidant (0.1% pomegranate peel extract) and a combination of synthetic antioxidant (0.01% butylhydroxytoluene) and pomegranate peel extract (0.05%) was investigated. The oxidation process was followed by monitoring fatty acid composition and measuring the quality and stability parameters of oil (acid value, peroxide value, anisidine value and thiobarbituric acid reactive substances value) during storage for 12 days at 65 0C. Furthermore, total phenolic content and DPPH radical scavenging activity was measured. Pomegranate peel extract as well as a combination of pomegranate peel extract and BHT can have a significant pos. impact (P < 0.05) on improvement of the quality and stability parameters of pomegranate seed oil. Furthermore, such activity was better than BHT used alone. Food Chemistry published new progress about Antioxidants. 929-77-1 belongs to class esters-buliding-blocks, name is Methyl docosanoate, and the molecular formula is C23H46O2, Safety of Methyl docosanoate.

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