Category: 121-79-9

Li, Ao published the artcileAntioxidant effects of gallic acid alkyl esters of various chain lengths in oyster during frying process, Category: esters-buliding-blocks, the publication is International Journal of Food Science and Technology (2021), 56(6), 2938-2945, database is CAplus.

Summary : The antioxidant effects of gallic acid (GA) and its alkyl esters including Me gallate, Et gallate, Pr gallate, Bu gallate (GA-C4), octyl gallate, lauryl gallate, hexadecyl gallate and octadecyl gallate in frying oil (soybean oil) and oyster during frying were investigated. Rancimat induction period (RIP) assay indicated GA and its alkyl esters effectively improved the oxidative stability of soybean oil according to the ‘polar paradox’; i.e., the antioxidant effects of the polyphenols decreased in lipid system with the increasing of hydrophobicity. Results also indicated that GA and its alkyl esters all effectively retarded lipid oxidation in oyster tissue according to parameters including RIP, peroxide value and ESR assays. Moreover, the antioxidant efficiency in oyster increased with the alkyl chain length until GA-C4, and thereafter, the antioxidant effects decreased, similar to the ‘cut-off effect’. This study provides basic data for improving the oxidative stability of seafood during frying.

International Journal of Food Science and Technology published new progress about 121-79-9. 121-79-9 belongs to esters-buliding-blocks, auxiliary class Natural product, name is Propyl 3,4,5-trihydroxybenzoate, and the molecular formula is C10H12O5, Category: esters-buliding-blocks.

Referemce:
https://en.wikipedia.org/wiki/Ester,
Ester – an overview | ScienceDirect Topics

Huang, Bingqing published the artcileInvestigation of the pectin grafting with gallic acid and propyl gallate and their antioxidant activities, antibacterial activities and fresh keeping performance, SDS of cas: 121-79-9, the publication is International Journal of Biological Macromolecules (2021), 343-350, database is CAplus and MEDLINE.

In this paper, a method for the enzymic modification of pectin, in which gallic acid (GA) and Pr gallate (PG) were grafted onto pectin mols. in an aqueous/organic two-phase system catalyzed by lipase, was proposed. The potential reaction mechanism was explored through UV-Vis, FTIR and 1H NMR spectroscopic methods and d. functional theory. Results suggested that the lipase played a dual role during the modification by catalyzing the hydrolysis of Me ester bonds of pectin in the aqueous phase and the esterification between the 4-OH of GA and PG and the -COOH of pectin in the organic phase. Moreover, the effects of GA and PG on the antioxidant and the antibacterial activities of pectin were evaluated, and results showed that the antioxidant and the antibacterial activities of modified pectin were better than those of native pectin. The effect of modified pectin on the quality of fresh bass (Lateolabrax maculatus) was further studied. Results suggested that, compared to control group, the total viable count, histamine level, malondialdehyde content and acid value of bass fillets treated with modified pectin were significantly reduced, whereas the sensory score was significantly increased.

International Journal of Biological Macromolecules published new progress about 121-79-9. 121-79-9 belongs to esters-buliding-blocks, auxiliary class Natural product, name is Propyl 3,4,5-trihydroxybenzoate, and the molecular formula is C10H12O5, SDS of cas: 121-79-9.

Referemce:
https://en.wikipedia.org/wiki/Ester,
Ester – an overview | ScienceDirect Topics

Hyatt, Joseph R. published the artcileComparison of antioxidant activities of selected phenolic compounds in O/W emulsions and bulk oil, Application In Synthesis of 121-79-9, the publication is Food Chemistry (2021), 129037, database is CAplus and MEDLINE.

Antioxidant activities of 1-o-galloylglycerol (GG), Pr gallate, rosmarinic acid (RA), tocopherols (TOC), and 1:1 combinations of GG/RA and GG/TOC were evaluated using in vitro assays including 2,2-diphenyl-1-picrylhydrazyl (DPPH·), 2,2-azino-bis (3-ethylbenzothiazoline-6-sulfonic acid) (ABTS+.), and ferric reducing antioxidant power (FRAP). Soybean oil stripped of TOC was utilized as bulk oil and as the oil phase in O/W emulsions for accelerated oxidation test with the selected phenolic compounds Efficacies of antioxidants were evaluated by monitoring total oxidation (TOTOX) values and fatty acid profiles of oil and O/W samples during the accelerated oxidation In bulk oil, GG outperformed other singular antioxidants, preventing 39.04% of oxidation for ω-3 fatty acids with a TOTOX value of 166.68. In emulsions, TOC outperformed other singular antioxidants, preventing 38.04% of oxidation with a TOTOX value of 196.72. Considering the polarities of the antioxidants and our testing systems, these results provide supporting evidence for the polar paradox theory.

Food Chemistry published new progress about 121-79-9. 121-79-9 belongs to esters-buliding-blocks, auxiliary class Natural product, name is Propyl 3,4,5-trihydroxybenzoate, and the molecular formula is C10H12O5, Application In Synthesis of 121-79-9.

Referemce:
https://en.wikipedia.org/wiki/Ester,
Ester – an overview | ScienceDirect Topics

Liu, Xiaotu published the artcilePlastic additives in ambient fine particulate matter in the Pearl River Delta, China: High-throughput characterization and health implications, COA of Formula: C10H12O5, the publication is Environmental Science & Technology (2021), 55(8), 4474-4482, database is CAplus and MEDLINE.

Elucidation of the chem. components of airborne fine particulate matter (PM_2.5) facilitates the characterization of atm. contamination sources and associated human exposure risks. In the present study, we employed a high-throughput anal. approach to investigate the abundance and distribution of 163 plastic additives in ambient PM_2.5 collected from 94 different sites across the Pearl River Delta region, China. These chems. are from six categories, including organophosphate esters (OPEs), phthalate esters (PAEs), PAE replacements, bisphenol analogs, UV stabilizers, and antioxidants. Ninety-three of them exhibited a detection frequency greater than 50% in PM_2.5, while the combined concentrations of target plastic additives ranged from 610 to 49,400μg/g (median: 3500μg/g) across sites. By category, concentrations of PAEs (median: 2710μg/g) were one to three orders of magnitude greater than those of other groups, followed by PAE replacements (540μg/g) and OPEs (76.2μg/g). Chem.-dependent exposure risks to PM_2.5-bound plastic additives were characterized via the estimated daily intake and hazard quotient (HQ) approaches, which resulted in two different risk prioritization systems. Although the HQ approach suggested no or very low health concerns when considering individual chems., the complexity of co-concurrent chems. in PM_2.5 raises the concern on potential health risks from exposure to airborne particles and a cocktail of chem. components.

Environmental Science & Technology published new progress about 121-79-9. 121-79-9 belongs to esters-buliding-blocks, auxiliary class Natural product, name is Propyl 3,4,5-trihydroxybenzoate, and the molecular formula is C10H12O5, COA of Formula: C10H12O5.

Referemce:
https://en.wikipedia.org/wiki/Ester,
Ester – an overview | ScienceDirect Topics

Yang, Gesheng published the artcileInfluences of stabilizers on lyocell spinning dope and fiber properties, Recommanded Product: Propyl 3,4,5-trihydroxybenzoate, the publication is Polymer Testing (2021), 107228, database is CAplus.

To inhibit some side reactions in the production of lyocell fiber, it is usually necessary to add a stabilizer into the spinning dope. In this report, the effects of several stabilizers on the spinning dope are investigated using rheometry, viscometry, and UV spectroscopy, and the resulting lyocell fibers are thoroughly analyzed. The results indicate that 2,4,5,7,8-pentamethyl-4-hydro-1,3-benzodioxin-6-ol (PBD) has the best comprehensive effect among stabilizers used individually, but that butylated hydroxytoluene (BHT) has the least impact on the color of spinning dope and resulting fibers. Overall, compound stabilizers are more effective than individual stabilizers. The compound stabilizer comprising BHT:PBD = 1:1 influenced the color of spinning dope the least, so the obtained fibers had the highest whiteness. The compound stabilizer comprising PG:PBD = 9:1 (PG = Pr gallate) had the most significant stabilizing effect on spinning dope, and the obtained fibers had the greatest breaking strength.

Polymer Testing published new progress about 121-79-9. 121-79-9 belongs to esters-buliding-blocks, auxiliary class Natural product, name is Propyl 3,4,5-trihydroxybenzoate, and the molecular formula is C18H22O4, Recommanded Product: Propyl 3,4,5-trihydroxybenzoate.

Referemce:
https://en.wikipedia.org/wiki/Ester,
Ester – an overview | ScienceDirect Topics

Hu, Jin published the artcileRobust, transparent, and self-healable polyurethane elastomer via dynamic crosslinking of phenol-carbamate bonds, Safety of Propyl 3,4,5-trihydroxybenzoate, the publication is Polymer (2021), 123674, database is CAplus.

Intrinsic self-healing materials designed through the incorporation of noncovalent interactions or dynamic covalent bonds are prized for their ability to recover from mech. damages. However, they often suffer from deteriorated mech. property due to the increased chain mobility. In this work, we reported a high-strength, colorless transparent self-healing polyurethane elastomer through dynamic crosslinking of reversible phenol-carbamate bonds. Tetrabromobisphenol A (TBBPA) and Pr gallate (PG) were used as the dynamic chain extender and dynamic crosslinking agent, resp. They both can be effectively deblocked at mild temperatures ensuring that the self-healing efficiency is not affected by the material formulation. The mech. properties can be tailored in a wide range by varying the crosslink d. and hard segment content, and their combination uniquely determines the material formulation. The phenol-carbamate based polyurethane (PPU) with a hard segment of 60% and a crosslink d. ν of 0.5 mmol cm^-3 exhibited a tensile strength up to 46.4 MPa at the break strain of 615% and displayed high elastic resilience. In the meantime, it could be fully healed (ησ = 93%) with 2 h of heating at 100°C after completely cut off. After recycled three times, it still maintained 80% of its original tensile strength. The structural rigidity of the crosslinker PG and the highly reversible phenol-carbamate bond play a crucial role in strengthening the mech. strength while maintaining the self-healing efficiencies at elevated temperatures This work provides a feasible strategy to prepare mech. robust crosslinked polyurethane elastomer with high self-healing efficiency in a cost-effective manner.

Polymer published new progress about 121-79-9. 121-79-9 belongs to esters-buliding-blocks, auxiliary class Natural product, name is Propyl 3,4,5-trihydroxybenzoate, and the molecular formula is C10H12O5, Safety of Propyl 3,4,5-trihydroxybenzoate.

Referemce:
https://en.wikipedia.org/wiki/Ester,
Ester – an overview | ScienceDirect Topics

Ye, Cui published the artcileCu₃(PO4)₂/BiVO₄ photoelectrochemical sensor for sensitive and selective determination of synthetic antioxidant propyl gallate, COA of Formula: C10H12O5, the publication is Analytical and Bioanalytical Chemistry (2022), 414(14), 4139-4147, database is CAplus and MEDLINE.

Abstract: Pr gallate (PG) as one of the most important additives has been widely used to prevent or slow the oxidation of foods in the food industry. In this work, Cu₃(PO₄)₂/BiVO₄ composite is synthesized through two hydrothermal processes. With visible light irradiation, the Cu₃(PO₄)₂/BiVO₄ composites modified PEC platform displays a superior anode photocurrent signal. The PEC sensor showed a wide linear range from 1 x 10^-10 to 1 x 10^-3 mol L^-1 with a detection limit as low as 0.05 x 10^-10 mol L^-1. The Cu₃(PO₄)₂/BiVO₄ photoelectrochem. (PEC) sensor is designed and characterized by electrochem. impedance. Compared with GCE/BiVO₄ and GCE/Cu₃(PO₄)₂, the GCE/Cu₃(PO₄)₂/BiVO₄ has a higher photocurrent response. In addition, the sensor is highly selective for samples containing other antioxidants. Furthermore, the sensor can be used to detect PG in edible oil samples with satisfactory results. The recoveries of Pr gallate in edible oil ranged from 95.5 to 101.8%. The results show that Cu₃(PO₄)₂/BiVO₄ composites can be used to analyze PG in different edible oil samples, which are beneficial for food quality monitoring and reduce the risk of PG overuse in food. Graphical abstract: [graphic not available: see fulltext]

Analytical and Bioanalytical Chemistry published new progress about 121-79-9. 121-79-9 belongs to esters-buliding-blocks, auxiliary class Natural product, name is Propyl 3,4,5-trihydroxybenzoate, and the molecular formula is C11H21BO2Si, COA of Formula: C10H12O5.

Referemce:
https://en.wikipedia.org/wiki/Ester,
Ester – an overview | ScienceDirect Topics

Wang, Wanyi published the artcileAnalysis, occurrence, toxicity and environmental health risks of synthetic phenolic antioxidants: A review, Recommanded Product: Propyl 3,4,5-trihydroxybenzoate, the publication is Environmental Research (2021), 111531, database is CAplus and MEDLINE.

A review. The continuous improvement of living standards is related to higher requirements for the freshness and taste of food. For example, synthetic phenolic antioxidants (SPAs) are added to fats and fried foods as food additives to minimize the oxidative rancidity of oils and fats. Hence, the global use of SPAs is increasing year by year. Di-Bu hydroxytoluene is one of the widely used SPAs, often in combination with Bu hydroxyanisole or gallate SPAs. The extensive use of these compounds makes them and their transformation products to be widespread in various environmental matrixes, including indoor dust, wastewater, river water, sewage sludge, and sediment, as well as human samples, such as nails and urine, at concentrations varying from nanogram per g (ng/g) to microgram per g (μg/g). Animal experiments have shown that high-dose SPA exposure is toxic, which may lead to DNA damage and mismatches and the development of cancerous tumors. Since the biosphere shares the same set of genetic codes, humans and animals have many identical or similar feedback mechanisms and information pathways. Therefore, the damage of SPAs to animals may also threaten human health. This review discusses the properties, occurrence, anal., and environmental health risks of typical SPAs, including Bu hydroxyanisole, di-Bu hydroxytoluene, tert-butylhydroquinone, Pr gallate, octyl gallate, and lauryl gallate, used as food additives. In addition, AO2246, which is used in food packaging bags, is also considered. Future research directions on SPAs and their transformation products (TPs) are identified and discussed.

Environmental Research published new progress about 121-79-9. 121-79-9 belongs to esters-buliding-blocks, auxiliary class Natural product, name is Propyl 3,4,5-trihydroxybenzoate, and the molecular formula is C24H12, Recommanded Product: Propyl 3,4,5-trihydroxybenzoate.

Referemce:
https://en.wikipedia.org/wiki/Ester,
Ester – an overview | ScienceDirect Topics

Li, Yuling published the artcileColorimetric sensor array based on CoOOH nanoflakes for rapid discrimination of antioxidants in food, Safety of Propyl 3,4,5-trihydroxybenzoate, the publication is Analytical Methods (2022), 14(28), 2754-2760, database is CAplus and MEDLINE.

The identification of synthetic antioxidants has considerable significance in food safety. Here, we described the development of a colorimetric sensor array for rapid detection of eight antioxidants in food through the redox reaction between CoOOH and antioxidants in the presence of colorimetric signal indicators. The CoOOH nanoflakes exhibited high catalytic oxidation activity and can independently catalyze oxidation signal indicators showing different colors. The color reaction was inhibited to different degrees in the presence of antioxidants, which resulted in distinct signal response patterns for their discrimination. The method showed good linearity in the range from 50 to 1000 nM for butylated hydroxytoluene (BHT), butylhydroxyanisole (BHA), Pr gallate (PG) and tert-Bu hydroquinone (TBHQ). Moreover, different proportions of antioxidants were located in the middle pattern of each single antioxidant, and showed certain linear relationships among different concentration ratios. Finally, the proposed colorimetric sensor array was used for practical applications where TBHQ and BHT were detected in biscuits and sausages, and BHA and PG were detected in fried pork kebabs, resp. The results were further confirmed by high-performance liquid chromatog., which demonstrated the great potential of the colorimetry sensor array for practical applications.

Analytical Methods published new progress about 121-79-9. 121-79-9 belongs to esters-buliding-blocks, auxiliary class Natural product, name is Propyl 3,4,5-trihydroxybenzoate, and the molecular formula is C10H12O5, Safety of Propyl 3,4,5-trihydroxybenzoate.

Referemce:
https://en.wikipedia.org/wiki/Ester,
Ester – an overview | ScienceDirect Topics

Viswanathan, Karthickeyan published the artcileEffects of antioxidant and ceramic coating on performance enhancement and emission reduction of a diesel engine fueled by Annona oil biodiesel, COA of Formula: C10H12O5, the publication is Journal of the Taiwan Institute of Chemical Engineers (2021), 243-256, database is CAplus.

A broad investigation on alternative source of energy has been going on to find a solution to multi-faceted fossil fuel concerns namely exhaustion of fuels, energy demand, harmful emissions and environmental impact. Biodiesel is an environment-friendly and renewable alternative for diesel. In the present work, Annona seed oil has been assessed as a potential feedstock for biodiesel production A100 was characterized by FTIR and GC-MS. Pr Gallate (PG) was characterized by morphol. study using FESEM. The elemental anal. of PG was measured using EDAX anal. YPSZ coating was found suitable to make out the potential of A100 in diesel engine. PCCU was designed to reduce the emissions by the liquid reductant in the catalyst system. The process optimization was performed by RSM and factorial exptl. design. With the YPSZ coated engine, improved characteristics of combustion and performance were noticed with A100+PG. A significant diminution on CO, HC and smoke emissions were perceived with A100+PG+CE. In addition, the work was expanded with the application PCCU for the lessening of NOx. A gradual decrement in NOx was observed with A100+PG+CE. Subsequently, A100+PG+CE with PCCU was deliberated as more prominent than other fuel samples in view of its engine characteristics.

Journal of the Taiwan Institute of Chemical Engineers published new progress about 121-79-9. 121-79-9 belongs to esters-buliding-blocks, auxiliary class Natural product, name is Propyl 3,4,5-trihydroxybenzoate, and the molecular formula is C23H20BN, COA of Formula: C10H12O5.

Referemce:
https://en.wikipedia.org/wiki/Ester,
Ester – an overview | ScienceDirect Topics