Month: December 2022

Tang, Shuqin published the artcileA Cocktail of Industrial Chemicals in Lipstick and Nail Polish: Profiles and Health Implications, Application In Synthesis of 71617-10-2, the main research area is industrial chem lipstick nail polish health exposure risk assessment.

Beauty products contain various industrial chems. to increase their functionality and appearance. The frequent use of beauty products may increase human exposure to industrial chems., but to date, their chem. components remain poorly characterized. Our work characterized the chem. components in lipstick and nail polish by screening for a total of 231 chems. from seven categories, including organophosphate esters (OPEs), phthalate esters (PAEs), non-PAE plasticizers, bisphenol analogs, parabens, UV stabilizers, and antioxidants. Their total concentrations ranged from 38.9 to 3810 μg/g (median of 193 μg/g) and from 18.6 to 1910 μg/g (307 μg/g) in lipstick (n = 34) and nail polish (n = 15), resp. The chem. compositions differed between lipstick and nail polish, but non-PAE plasticizers generally dominated over other groups of chems. A number of emerging plasticizers, OPEs, and UV stabilizers have rarely been reported in personal care products or environmental samples but were found at very high levels in beauty products, raising concern about their environmental release and human exposure risk. Although the employment of a hazard quotient approach suggested low health risks for exposure to industrial chems. from the use of beauty products, potential mixture effects from the chem. cocktail and occupational exposure to beauty products should not be overlooked.

Environmental Science & Technology Letters published new progress about Antioxidants. 71617-10-2 belongs to class esters-buliding-blocks, name is Isopentyl 3-(4-methoxyphenyl)acrylate, and the molecular formula is C15H20O3, Application In Synthesis of 71617-10-2.

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

Fiore, Alberto published the artcileActive packaging based on PLA and chitosan-caseinate enriched rosemary essential oil coating for fresh minced chicken breast application, Recommanded Product: Methyl decanoate, the main research area is chicken breast packaging rosemary essential oil PLA chitosan caseinate.

Active packaging systems are considered an effective way to prolong the shelf life of fresh food products. This study compared five different biopolymer films for their ability to delay the lipid oxidation of raw chicken meat. New antioxidant poly lactic acid film was prepared by coating the film surface with chitosan or chitosan/caseinate blend enriched with rosemary essential oil at concentration of 1% and 2%. Films were characterized in terms of microstructure, water vapor permeability, mech. properties, and antioxidant capacity. In vivo study was done using fresh minced chicken meats stored at 4 °C and analyzed after 0, 4, 7, 11, 14, 21 days. Results indicated that water vapor transmission rate was reduced by the presence of the coating and assumed the lowest value (1.23 ± 0.03 x 10-4 g m-2 s-1) with coating enriched with 2% of rosemary essential oils. The films showed an antioxidant capacity of maximum 6% equivalent to the antioxidant capacity of 6,25 μg of REO/mL. Results from in vivo test showed that the active films were able to reduce meat oxidation during storage in anaerobic modified atm. condition: samples packed with active film showed constant malondialdehyde (MDA) and color up to 14 days and reduction of heptanal and ethanol concentration compared to samples packed with control film (72 % and 90 % resp.). Overall, this study has demonstrated that PLA films coated with an active coating are a promising delivery method for providing antioxidant effects in packaging for fresh meat products.

Food Packaging and Shelf Life 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

Mora-Gutierrez, Adela published the artcileMixed Biopolymer Systems Based on Bovine and Caprine Caseins, Yeast β-Glucan, and Maltodextrin for Microencapsulating Lutein Dispersed in Emulsified Lipid Carriers, Computed Properties of 110-42-9, the main research area is caprine casein yeast glucan maltodextrin microencapsulating lutein lipid carrier; biopolymers; emulsified lipid carriers; lutein; microencapsulation; spray drying; storage stability.

Lutein is an important antioxidant that quenches free radicals. The stability of lutein and hence compatibility for food fortification is a big challenge to the food industry. Encapsulation can be designed to protect lutein from the adverse environment (air, heat, light, pH). In this study, we determined the impact of mixed biopolymer systems based on bovine and caprine caseins, yeast β-glucan, and maltodextrin as wall systems for microencapsulating lutein dispersed in emulsified lipid carriers by spray drying. The performance of these wall systems at oil/water interfaces is a key factor affecting the encapsulation of lutein. The highest encapsulation efficiency (97.7%) was achieved from the lutein microcapsules prepared with the mixed biopolymer system of caprine αs1-II casein, yeast β-glucan, and maltodextrin. Casein type and storage time affected the stability of lutein. The stability of lutein was the highest (64.57%) in lutein microcapsules prepared with the mixed biopolymer system of caprine αs1-II casein, yeast β-glucan, and maltodextrin, whereas lutein microcapsules prepared with the biopolymer system of bovine casein, yeast β-glucan, and maltodextrin had the lowest (56.01%). The stability of lutein in the lutein microcapsules dramatically decreased during storage time. The antioxidant activity of lutein in the lutein microcapsules was closely associated with the lutein concentration

Polymers (Basel, Switzerland) published new progress about Antioxidants. 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

Mora-Gutierrez, Adela published the artcileMixed Biopolymer Systems Based on Bovine and Caprine Caseins, Yeast β-Glucan, and Maltodextrin for Microencapsulating Lutein Dispersed in Emulsified Lipid Carriers, Name: Methyl octanoate, the main research area is caprine casein yeast glucan maltodextrin microencapsulating lutein lipid carrier; biopolymers; emulsified lipid carriers; lutein; microencapsulation; spray drying; storage stability.

Lutein is an important antioxidant that quenches free radicals. The stability of lutein and hence compatibility for food fortification is a big challenge to the food industry. Encapsulation can be designed to protect lutein from the adverse environment (air, heat, light, pH). In this study, we determined the impact of mixed biopolymer systems based on bovine and caprine caseins, yeast β-glucan, and maltodextrin as wall systems for microencapsulating lutein dispersed in emulsified lipid carriers by spray drying. The performance of these wall systems at oil/water interfaces is a key factor affecting the encapsulation of lutein. The highest encapsulation efficiency (97.7%) was achieved from the lutein microcapsules prepared with the mixed biopolymer system of caprine αs1-II casein, yeast β-glucan, and maltodextrin. Casein type and storage time affected the stability of lutein. The stability of lutein was the highest (64.57%) in lutein microcapsules prepared with the mixed biopolymer system of caprine αs1-II casein, yeast β-glucan, and maltodextrin, whereas lutein microcapsules prepared with the biopolymer system of bovine casein, yeast β-glucan, and maltodextrin had the lowest (56.01%). The stability of lutein in the lutein microcapsules dramatically decreased during storage time. The antioxidant activity of lutein in the lutein microcapsules was closely associated with the lutein concentration

Polymers (Basel, Switzerland) published new progress about Antioxidants. 111-11-5 belongs to class esters-buliding-blocks, name is Methyl octanoate, and the molecular formula is C9H18O2, Name: Methyl octanoate.

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

Chi, Yunyang published the artcileChemical Composition and Antioxidant Activity of Essential Oil of Chinese Propolis, Name: Benzyl acetate, the main research area is propolis essential oil antioxidant; antioxidant activity; bioactive compounds; essential oil; flavors and fragrances; propolis.

The chem. composition and in vitro antioxidant activity of the essential oil of propolis (EOP) collected from 25 locations in China was investigated. Steam-distillation extraction was used to extract the EOP, and chem. composition was identified by GC/MS. The antioxidant activities of EOP were also measured. The result showed that a total of 406 compounds were detected in EOP. The major compounds of Chinese EOP were cedrol, γ-eudesmol, benzyl alc., phenethyl alc., 2-methoxy-4-vinylphenol, 3,4-dimethoxystyrene and guaiol. Principal component anal. revealed the significant correlation between EOP compositions and their origins, and certain correlation was detected between EOP and their color. Linear discriminant anal. showed that 88% and 84% of the propolis samples were predicted correctly as the groupings identified by climatic zone and the color, resp. Furthermore, the differences of antioxidant activities of EOP were significant. EOP of Shandong had the strongest antioxidant activities, whereas EOP of Guangdong, Yunnan and Hunan showed the poorest.

Chemistry & Biodiversity published new progress about Antioxidants. 140-11-4 belongs to class esters-buliding-blocks, name is Benzyl acetate, and the molecular formula is C9H10O2, Name: Benzyl acetate.

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

Zhang, Xiaokang published the artcileEnhanced the effects on improving the cold flow properties and oxidative stability of diesel-biodiesel blends by grafting antioxidant on PMA type pour point depressant, Application of Dodecyl 2-methylacrylate, the main research area is polymethacrylate diesel biodiesel blend oxidative stability pour point depressant.

The commercialization and popularization of biodiesel are mainly restricted by the utilization in cold areas and long-term storage due to the poor low-temperature fluidity and oxidation stability. In order to synchronously improve the low-temperature fluidity and oxidation stability of biodiesel, a bifunctional polymethacrylate (PMA) type copolymer was synthesized by grafting amine antioxidant 1-phenylnaphthylamine onto PMA originally. The grafted copolymers showed excellent performance in reducing the cold filter plugging point (CFPP) and pour point (PP) of B20 (20 vol% soybean biodiesel +80 vol% diesel fuel) and the maximum reduction were 13 and 10°C resp. at the addition of 1500 ppm, which exhibited lower values of 5-8°C and 4-6°C resp. than un-grafted copolymers. The induction period (IP) of B20 treated with 2000 ppm of grafted copolymers was prolonged by 17 h compared with pure B20. In addition, the attenuation of the cold flow properties of B20 samples during the oxidation process was studied, and the mechanism of bifunctional copolymer to improve the properties of B20 was explored.

Fuel Processing Technology published new progress about Antioxidants. 142-90-5 belongs to class esters-buliding-blocks, name is Dodecyl 2-methylacrylate, and the molecular formula is C16H30O2, Application of Dodecyl 2-methylacrylate.

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

Gavril, Georgiana-Luminita published the artcileInfluence of medicinal and aromatic plants into risk assessment of a new bioactive packaging based on polylactic acid (PLA), Name: Ethyl pentadecanoate, the main research area is Melissa Salvia leaf bioactive packaging polylactic acid; Active packaging; Lemon balm; Migration; Polylactic acid; Risk assessment; Sage.

A new biodegradable antioxidant active packaging for food applications based on antioxidants from medicinal and aromatic plants incorporated into a polylactic acid matrix was designed and developed. Melt blending processing technique was applied to prepare polylactic acid films loaded by sage and lemon balm leaves. Antioxidant properties of developed active films were investigated using the following methods- 2,2′-azino-bis(3-ethylbenzothiazoline-6-sulfonic acid), 2,2-diphenyl-1-(2,4,6-trinitrophenyl)hydrazyl and a home-made generator of hydroxyl radicals. In addition, reducing power and total phenolic content of polylactic acid films were checked. The results of antioxidant capacity showed that percentage of hydroxylation for active film with lemon balm and sage was 55.5% ± 0.1% and 67.4% ± 0.3%, resp. The reducing power of active films increased 8 times in comparison to the blank samples. Moreover, extensive investigation of influence of sage and lemon balm leaves on material safety and type of migrants was performed using migration assays. The composition of both non-volatile and volatile compounds of different active packaging films was compared with neat polylactic acid film. Three different food simulants such as 95% (volume/volume) ethanol, 10% (volume/volume) ethanol and 3% (w/v) acetic acid were checked. It was shown that the addition of sage and lemon balm leaves into a polylactic acid structure decreased the migration of both linear and cyclic polylactic acid oligomers, currently not legislated by European Union. Besides, total absence or decrease of migration of volatile compounds were observed when using the active films. Both thermal and mech. properties of films were also evaluated.

Food and Chemical Toxicology published new progress about Antioxidants. 41114-00-5 belongs to class esters-buliding-blocks, name is Ethyl pentadecanoate, and the molecular formula is C17H34O2, Name: Ethyl pentadecanoate.

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

Aung, Wai Thet published the artcileProduction, physicochemical investigations, antioxidant effect, and cellular uptake in Caco-2 cells of the supersaturable astaxanthin self-microemulsifying tablets, Application of 2′,7′-Dichloro-3-oxo-3H-spiro[isobenzofuran-1,9′-xanthene]-3′,6′-diyl diacetate, the main research area is Caco cell astaxanthin microemulsion tablet antioxidant cellular physicochem property; Antioxidant activity; Astaxanthin; Caco-2 cells; Self-microemulsifying tablets; Spray drying.

The purpose of this study was to develop astaxanthin (AST)-loaded self-microemulsifying drug delivery system (SMEDDS) tablets and evaluate their physicochem. and biol. properties. The optimized liquid (L)-AST SMEDDS formulation was composed of rice bran oil (33.67%), Kolliphor RH 40 (34.70%), and Span 20 (31.63%). Two types of hydrophilic polymers (hydroxypropyl methylcellulose, HPMC, and polyvinyl alc., PVA) solutions were selected as a precipitation inhibitor for AST and incorporated into L-AST SMEDDS to obtain supersaturation and enhance dissolution of AST. The formulation was then mixed with microcrystalline cellulose and subsequently transformed to solid S-AST SMEDDS particles using a spray dryer prior to direct compression into tablets. The HPMC AST SMEDDS tablet and PVA AST SMEDDS tablet were characterized for their physicochem. properties, dissolution, AST release, and stabilities. Moreover, the cellular uptake and antioxidant effect of AST SMEDDS tablets were evaluated in Caco-2 cells. With good tablet characters, both HPMC AST SMEDDS tablet and PVA AST SMEDDS tablet dissolution profiles were improved compared to that of raw AST. While initially less than 50% of AST released from HPMC AST SMEDDS tablet and PVA AST SMEDDS tablet in pH 1.2 medium, after 6 h more than 98% of AST releases in pH 6.8 were achieved which was similar to L-AST SMEDDS profile. Cellular antioxidant activities of L-AST SMEDDS and HPMC AST SMEDDS tablet & PVA AST SMEDDS tablet were significantly greater than pure AST powder. HPMC AST SMEDDS tablet showed better uptake and deeper penetration through Caco-2 cells than that in PVA AST SMEDDS tablet and pure powder. Our successfully developed AST SMEDDS tablets were demonstrated to be a potential platform to deliver highly lipophilic AST and improve permeation and bioavailability.

European Journal of Pharmaceutical Sciences 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, Application of 2′,7′-Dichloro-3-oxo-3H-spiro[isobenzofuran-1,9′-xanthene]-3′,6′-diyl diacetate.

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

Yao, Jiangqi published the artcileEffects of dandelion addition on antioxidant property, sensory characteristics and inhibitory activity against xanthine oxidase of beer, Category: esters-buliding-blocks, the main research area is beer dandelion antioxidant sensory property xanthine oxidase; Antioxidant activity; Chicoric acid; Craft beer; Dandelion; Polyphenols; Xanthine oxidase.

The effects of dandelion addition (DA) on the physiochem. properties, antioxidant activity, inhibitory activity against xanthine oxidase (XOD) and flavor of craft beer were investigated. It was found that DA changed the pH value, total acid content, thiobarbituric-acid-value, sugar content and color of beer, and increased the contents of total polyphenols and flavonoids and thus the antioxidant activity of beer. HPLC anal. showed that DA provided beer with chlorogenic, caffeic, ferulic, and chicoric acid, contributing to the inhibition activity against XOD that is a key enzyme in uric acid production GC-MS anal. showed that 3-methyl-1-butanol, isopentyl acetate and Et caprylate were main aroma components of all samples. Although DA introduced the special aroma component of azulene, it did not significantly affect the appearance, bubble, aroma and taste evaluation of beer. Conclusively, DA potentially improved the beer properties of antioxidant and inhibition of uric acid production without changing its sensory characteristics.

Current Research in Food Science published new progress about Antioxidants. 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

Yao, Jiangqi published the artcileEffects of dandelion addition on antioxidant property, sensory characteristics and inhibitory activity against xanthine oxidase of beer, Recommanded Product: Methyl octanoate, the main research area is beer dandelion antioxidant sensory property xanthine oxidase; Antioxidant activity; Chicoric acid; Craft beer; Dandelion; Polyphenols; Xanthine oxidase.

The effects of dandelion addition (DA) on the physiochem. properties, antioxidant activity, inhibitory activity against xanthine oxidase (XOD) and flavor of craft beer were investigated. It was found that DA changed the pH value, total acid content, thiobarbituric-acid-value, sugar content and color of beer, and increased the contents of total polyphenols and flavonoids and thus the antioxidant activity of beer. HPLC anal. showed that DA provided beer with chlorogenic, caffeic, ferulic, and chicoric acid, contributing to the inhibition activity against XOD that is a key enzyme in uric acid production GC-MS anal. showed that 3-methyl-1-butanol, isopentyl acetate and Et caprylate were main aroma components of all samples. Although DA introduced the special aroma component of azulene, it did not significantly affect the appearance, bubble, aroma and taste evaluation of beer. Conclusively, DA potentially improved the beer properties of antioxidant and inhibition of uric acid production without changing its sensory characteristics.

Current Research in Food Science published new progress about Antioxidants. 111-11-5 belongs to class esters-buliding-blocks, name is Methyl octanoate, and the molecular formula is C9H18O2, Recommanded Product: Methyl octanoate.

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