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1. Redox switching of an artificial transmembrane signal transduction system

Author:
Trevisan, Lucia; Kocsis, Istvan; Hunter, Christopher A.
Source:
Chemical communications 2021 v.57 no.17 pp. 2196-2198
ISSN:
1364-548X
Subject:
ascorbic acid,   etc   ; lipid bilayers; signal transduction;     Show all 3 Subjects
Abstract:
... Transmission of chemical signals across lipid bilayer membranes can be achieved using membrane-anchored molecules, where molecular motion across the bilayer is controlled by switching the polarity of two different head groups. An external redox signal delivered by ascorbic acid was used to trigger membrane translocation in a synthetic transduction system. ...
DOI:
10.1039/d0cc08322d

2. Phenolics and ascorbic acid in pumpkin (Cucurbita maxima) slices: effects of hot air drying and degradation kinetics

Author:
Ouyang, Mengyun; Cao, Sheng; Huang, Yiqun; Wang, Yan
Source:
Journal of food measurement & characterization 2021 v.15 no.1 pp. 247-255
ISSN:
2193-4126
Subject:
ascorbic acid,   etc   ; air; measurement; phenolic compounds; pumpkins;     Show all 5 Subjects
Abstract:
... This study was aimed to investigate the effects of hot air drying (60–100 ℃, 1.5 m/s, 6–17 h; final products contained 10.50 ± 0.29% moisture) on the levels of total phenolic compounds (TPC) including both soluble phenolic compounds (SPC) and insoluble phenolic compounds (IPC) as well as ascorbic acid in pumpkin slices. IPC accounted for an average of 74.9% of the TPC in fresh pumpkin flesh, but o ...
DOI:
10.1007/s11694-020-00618-7

3. Pineapple juice acidity removal using electrodeionization (EDI)

Author:
Julian, Helen; Khoiruddin, K.; Julies, Nia; Edwina, Vinka; Wenten, I.G.
Source:
Journal of food engineering 2021 v.304 pp. 110595
ISSN:
0260-8774
Subject:
ascorbic acid,   etc   ; acidity; adsorption; color; ion exchange; pH; pineapple juice;     Show all 7 Subjects
Abstract:
... The applicability of EDI for organic acid removal in pineapple juice was investigated in this study. Using a bench-scale EDI, the influence of operation parameters, such as current density and feed flow rate, were evaluated against the ion transport flux and current efficiency. It was suggested that more acid removal and higher current efficiency were observed with the increase of feed flow rate a ...
DOI:
10.1016/j.jfoodeng.2021.110595

4. Discrepancies in global vitamin C recommendations: a review of RDA criteria and underlying health perspectives

Author:
Carr, Anitra C.; Lykkesfeldt, Jens
Source:
Critical reviews in food science and nutrition 2021 v.61 no.5 pp. 742-755
ISSN:
1549-7852
Subject:
ascorbic acid,   etc   ; food science; gender; lactation; obesity; pandemic; pregnancy;     Show all 7 Subjects
Abstract:
... The concept of a ‘recommended dietary allowance’ (RDA) and similar terms describing the daily intake of essential nutrients recommended for healthy individuals is widely used by various health authorities around the world. For vitamin C, however, there remain significant discrepancies in the criteria used to establish dietary recommendations and consequently, global recommendations for daily vitam ...
DOI:
10.1080/10408398.2020.1744513

5. Development and validation of a new UPLC-MS/MS method for quantification of ganoderic acid-A loaded nanolipidic carrier in rat plasma and application to pharmacokinetic studies

Author:
Rahman, Mahfoozur; Almalki, Waleed H.; Kazmi, Imran; Afzal, Obaid; Katouah, Hanadi A.; Alrobaian, Majed; Altamimi, Abdulmalik Saleh Alfawaz; Al-Abbasi, Fahad A.; Alshammari, Mohammed S.; Rub, Rehan Abdur; Beg, Sarwar; Kumar, Vikas
Source:
Journal of chromatography 2021 v.1163 pp. 122501
ISSN:
1570-0232
Subject:
ascorbic acid,   etc   ; absorption; acetonitrile; oral administration; pharmacokinetics; rats;     Show all 6 Subjects
Abstract:
... A systematic methodology was used to quantify ganoderic acid-A (GA-A) loaded nano-lipid carriers (NLC) in rat plasma using UPLC-MS/MS. Separation of the analyte was achieved using ACQUITY UPLC BEH C₁₈ column (1.7 µm) and mobile phase as water containing 0.1% Acetonitrile (40: 60% v/v) at a flow rate of 0.4 mL·min⁻¹. The analyte was detected using MRM mode to track precursor-to-product ion transiti ...
DOI:
10.1016/j.jchromb.2020.122501

6. Removal of Cl(-I) from strongly acidic wastewater containing Cu(II) by complexation-precipitation using thiourea: Efficiency enhancement by ascorbic acid

Author:
Guo, Panpan; Kong, Linghao; Hu, Xingyun; Peng, Xianjia; Wang, Xianliang
Source:
Journal of hazardous materials 2021 v.402 pp. 123836
ISSN:
0304-3894
Subject:
ascorbic acid,   etc   ; neutralization; solid wastes; sulfuric acid; thiourea; wastewater;     Show all 6 Subjects
Abstract:
... Strongly acidic wastewater produced by copper smelting industries contains high concentrations of Cl(-I), Cu(II) and H₂SO₄. The common method for the treatment of this type of wastewater is neutralization, which produces large amounts of solid waste. To avoid the production of solid waste, it was proposed to selectively remove contaminants and then recycle the wastewater as diluted sulfuric acid. ...
DOI:
10.1016/j.jhazmat.2020.123836

7. Effects of tray drying, vacuum infrared drying, and vacuum microwave drying techniques on quality characteristics and aroma profile of orange peels

Author:
Bozkir, Hamza; Tekgül, Yeliz; Erten, Edibe Seda
Source:
Journal of food process engineering 2021 v.44 no.1 pp. e13611
ISSN:
0145-8876
Subject:
ascorbic acid,   etc   ; carotenoids; color; diffusivity; durability; flavor; odors; orange peels;     Show all 8 Subjects
Abstract:
... This study aimed to dry orange peels using tray drying (TD), vacuum infrared drying (VID), and vacuum microwave drying (VMD) techniques and to investigate the effects of different drying techniques on the drying kinetics, physical, chemical characteristics, and volatile compounds. The VMD raised the drying rate and the effective water diffusivity compared to the TD and the VID. It was detected tha ...
DOI:
10.1111/jfpe.13611

8. Self-assembled nanostructures of L-ascorbic acid alkyl esters support monomeric amphotericin B

Author:
Nocelli, Natalia E.; Zulueta Díaz, Yenisleidy de las Mercedes; Millot, Marine; Colazo, María Luz; Vico, Raquel V.; Fanani, Maria Laura
Source:
Heliyon 2021 v.7 no.1 pp. e06056
ISSN:
2405-8440
Subject:
ascorbic acid,   etc   ; amphotericin B; antiparasitic agents; solubilization; spectroscopy;     Show all 5 Subjects
Abstract:
... Amphotericin B (AmB) is a highly effective antimicrobial, with broad antimycotic and antiparasitic effect. However, AmB poor water-solubilisation and aggregation tendency limits its use for topical applications. We studied the capacity of nanostructures formed by alkyl esters of L-ascorbic acid (ASCn) to solubilise AmB and tested the relationship between the prevalence of the monomeric form of AmB ...
DOI:
10.1016/j.heliyon.2021.e06056

9. A kinetic study and mechanisms of reduction of N, N′-phenylenebis(salicyalideneiminato)cobalt(III) by L-ascorbic acid in DMSO-water medium

Author:
Abdulsalam, S.; Idris, S.O.; Shallangwa, G.A.; Onu, A.D.
Source:
Heliyon 2020 v.6 no.9 pp. e04621
ISSN:
2405-8440
Subject:
ascorbic acid,   etc   ; cobalt; dehydroascorbic acid;     Show all 3 Subjects
Abstract:
... The kinetics of reduction of N, N¹-phenylenebis-(salicylideneiminato)cobalt (III), referred to as [Co(Salophen)]⁺ by L-ascorbic acid (H₂A) was studied in mixed aqueous medium (DMSO:H₂O; 1:4 v/v) under pseudo-first-order conditions at 33 ± 1 °C, μ = 0.1 mol dm⁻³ (NaCl) and λₘₐₓ = 470 nm. L-ascorbic acid was oxidized to dehydroascorbic acid with kinetics that was first order in both the [H₂A] and [C ...
DOI:
10.1016/j.heliyon.2020.e04621

10. Correction: l-Ascorbic acid oxygen-induced micro-electronic fields over metal-free polyimide for peroxymonosulfate activation to realize efficient multi-pathway destruction of contaminants

Author:
Cao, Wenrui; Lyu, Lai; Deng, Kanglan; Lu, Chao; Hu, Chun
Source:
Journal of materials chemistry A 2020 v.8 no.4 pp. 2147
ISSN:
2050-7496
Subject:
ascorbic acid,   etc   ; nanoflowers; oxidation; pollutants;     Show all 4 Subjects
Abstract:
... Correction for ‘l-Ascorbic acid oxygen-induced micro-electronic fields over metal-free polyimide for peroxymonosulfate activation to realize efficient multi-pathway destruction of contaminants’ by Wenrui Cao et al., J. Mater. Chem. A, 2020, DOI: 10.1039/c9ta10284a. ...
DOI:
10.1039/c9ta90304f

11. Polysaccharide dual coating of yeast capsules for stabilization of anthocyanins

Author:
Tan, Chen; Wang, Jing; Sun, Baoguo
Source:
Food chemistry 2021 v.357 pp. 129652
ISSN:
0308-8146
Subject:
ascorbic acid,   etc   ; anthocyanins; chitosan; chondroitin sulfate; degradation; encapsulation; food chemistry; heat; hydrophobicity; oxygen; water solubility; yeasts;     Show all 12 Subjects
Abstract:
... The dual coated yeast capsules for anthocyanin encapsulation and stabilization were fabricated. Anthocyanins were preloaded in hollow yeast capsules, and then the dual coating was performed by deposition of opposite charged polysaccharides using layer-by-layer technique. The combination of positively charged chitosan and negatively charged chondroitin sulfate was found to confer the yeast capsules ...
DOI:
10.1016/j.foodchem.2021.129652

12. Toward a versatile flow technique: Development and application of reverse flow dual-injection analysis (rFDIA) for determining dissolved iron redox species and soluble reactive phosphorus in seawater

Author:
Chen, Luodan; Xu, Jin; Wang, Ting; Huang, Yongming; Yuan, Dongxing; Gong, Zhenbin
Source:
Talanta 2021 v.232 pp. 122404
ISSN:
0039-9140
Subject:
ascorbic acid,   etc   ; detection limit; estuaries; flow injection analysis; liquids; reactive phosphorus; seawater; spectrophotometers; standard deviation;     Show all 9 Subjects
Abstract:
... A versatile flow analyzer that extended the features of reverse flow injection analysis (rFIA) was developed in this study and named reverse flow dual-injection analysis (rFDIA). Compared with typical rFIA, the analyzer requires less reagent and is more environmentally friendly, which has two injection valves and two reagent loops for the accurate and successive injection of two reagents. With a 2 ...
DOI:
10.1016/j.talanta.2021.122404

13. Ascorbic acid enhanced ciprofloxacin degradation with nanoscale zero-valent copper activated molecular oxygen

Author:
Zhang, Kejia; Deng, Jing; Chen, Yijing; Xu, Chengcheng; Ye, Cheng; Ling, Xiao; Li, Xueyan
Source:
Chemosphere 2021 v.278 pp. 130354
ISSN:
0045-6535
Subject:
ascorbic acid,   etc   ; air; ciprofloxacin; copper; decarboxylation; density functional theory; hydroxylation; oxygen; pH; piperazine; remediation;     Show all 11 Subjects
Abstract:
... The remediation of water polluted by fluroquinolones antibiotics remains an important issue. Although zero-valent copper (ZVC) coupled with molecular oxygen can destruct refractory organic pollutants, the activation efficiency still needs to be further improved. In this study, the introduction of ascorbic acid (AA) in ZVC/air process maintained a high-concentration of Cu(Ⅰ), which can efficiently ...
DOI:
10.1016/j.chemosphere.2021.130354

14. Influence of QD photosensitizers in the photocatalytic production of hydrogen with biomimetic [FeFe]-hydrogenase. Comparative performance of CdSe and CdTe

Author:
Corredor, Juan; Harankahage, Dulanjan; Gloaguen, Frederic; Rivero, Maria J.; Zamkov, Mikhail; Ortiz, Inmaculada
Source:
Chemosphere 2021 v.278 pp. 130485
ISSN:
0045-6535
Subject:
ascorbic acid,   etc   ; biomimetics; catalysts; electron transfer; energy conversion; hydrogen; hydrogen production; light; photocatalysis; quantum dots;     Show all 10 Subjects
Abstract:
... Photocatalytic systems comprising a hydrogenase-type catalyst and CdX (X = S, Se, Te) chalcogenide quantum dot (QD) photosensitizers show extraordinary hydrogen production rates under visible light excitation. What remains unknown is the mechanism of energy conversion in these systems. Here, we have explored this question by comparing the performance of two QD sensitizers, CdSe and CdTe, in photoc ...
DOI:
10.1016/j.chemosphere.2021.130485

15. Hydrogen spillover effect induced by ascorbic acid in CdS/NiO core-shell p-n heterojunction for significantly enhanced photocatalytic H2 evolution

Author:
Sun, Guotai; Xiao, Bing; Shi, Jian-Wen; Mao, Siman; He, Chi; Ma, Dandan; Cheng, Yonghong
Source:
Journal of colloid and interface science 2021 v.596 pp. 215-224
ISSN:
0021-9797
Subject:
ascorbic acid,   etc   ; hydrogen; hydrogen production; nanorods; new variety; nickel oxide; photocatalysis; photocatalysts; wavelengths;     Show all 9 Subjects
Abstract:
... A new variety of CdS/NiO core-shell p-n heterojunction is synthesized by in-situ chemically depositing NiO shell on single-crystal CdS nanorods for the first time. With this method, the range of NiO shell thickness can be accurately controlled within a few nanometers. The optimized CdS/NiO sample (CSN₀.₅) with a NiO shell layer of 1.5 nm exhibits a highly efficient photocatalytic H₂ evolution rate ...
DOI:
10.1016/j.jcis.2021.03.150

16. Vitamin C, protein, and dietary fibre contents as affected by genotype, agro-climatic conditions, and cooking method on tubers of Solanum tuberosum Group Phureja

Author:
Thomas, Séverine; Vásquez-Benítez, Juan-David; Cuéllar-Cepeda, Fabio-Alexander; Mosquera-Vásquez, Teresa; Narváez-Cuenca, Carlos-Eduardo
Source:
Food chemistry 2021 v.349 pp. 129207
ISSN:
0308-8146
Subject:
ascorbic acid,   etc   ; Solanum tuberosum; dietary fiber; food chemistry; genotype; potatoes; protective effect; variability; variance;     Show all 9 Subjects
Abstract:
... The simultaneous effect of genotype, agro-climatic conditions, and cooking method was evaluated towards the contents of vitamin C, protein, and soluble, insoluble, and total dietary fibre in potato tubers from the Group Phureja. Within the tested treatments, vitamin C was affected the most (9.4–85.1 mg/100 g DW), followed by insoluble dietary fibre (3.9–16.6 g/100 DW), soluble dietary fibre (1.0–3 ...
DOI:
10.1016/j.foodchem.2021.129207

17. Comparison of major nutrients and minerals between organic and conventional tomatoes. A review

Author:
Vélez-Terreros, Pamela Y.; Romero-Estévez, David; Yánez-Jácome, Gabriela S.; Simbaña-Farinango, Karina; Navarrete, Hugo
Source:
Journal of food composition and analysis 2021 v.100 pp. 103922
ISSN:
0889-1575
Subject:
ascorbic acid,   etc   ; environmental protection; food composition; lycopene; markets; mineral content; polyphenols; tomatoes;     Show all 8 Subjects
Abstract:
... Consumers have considered organic crops more beneficial to health and the environment as opposed to conventional crops. The following review aims to compare the major nutrients and mineral content in organic and conventional tomatoes. As such, articles related to the comparison of organic and conventional tomato crops were selected, as well as articles in which nutrient and/or mineral content were ...
DOI:
10.1016/j.jfca.2021.103922

18. Inactive dry yeast to improve the oxidative stability of Spanish dry-fermented sausage “salchichón”

Author:
Alarcón, Marina; Pérez-Coello, M. Soledad; Díaz-Maroto, M. Consuelo; Alañón, M. Elena; García-Ruiz, Antonia; Soriano, Almudena
Source:
Lebensmittel-Wissenschaft + [i.e. und] Technologie 2021 v.146 pp. 111385
ISSN:
0023-6438
Subject:
ascorbic acid,   etc   ; Saccharomyces cerevisiae; antioxidant activity; breads; fermented sausages; lipid peroxidation; lipids; oxidation; oxidative stability; yeasts;     Show all 10 Subjects
Abstract:
... The use of inactive dry yeasts (IDY) of Saccharomyces cerevisiae as a natural alternative to sodium ascorbate to inhibit the oxidation reactions of Spanish dry-fermented sausage “salchichón” was studied. Control sausages and those treated with different IDY concentrations were monitored and analyzed at 0, 7, 14, 21 and 28 d throughout the ripening process. The application of IDY (1.5 and 3 g/100 g ...
DOI:
10.1016/j.lwt.2021.111385

19. Structure characterization of Oudemansiella radicata polysaccharide and preparation of selenium nanoparticles to enhance the antioxidant activities

Author:
Liu, Yuntao; Huang, Weimin; Han, Wanyun; Li, Cheng; Zhang, Zhiqing; Hu, Bin; Chen, Sui; Cui, Pengju; Luo, Songming; Tang, Zizhong; Wu, Wenjuan; Luo, Qingying
Source:
Lebensmittel-Wissenschaft + [i.e. und] Technologie 2021 v.146 pp. 111469
ISSN:
0023-6438
Subject:
ascorbic acid,   etc   ; anion exchange; dispersants; gel chromatography; methylation; polysaccharides; selenites; selenium; temperature; toxicity;     Show all 10 Subjects
Abstract:
... Selenium nanoparticles have attracted worldwide attentions due to their bioactivities and low toxicity, but the application is limited by stability. This study focuses on the synthesis of selenium nanoparticles using polysaccharide as dispersants. Two Oudemansiella radicata polysaccharide fractions (ORP₁ and ORP₂) were purified by anion exchange and gel filtration chromatography. Monosaccharide co ...
DOI:
10.1016/j.lwt.2021.111469

20. The effects of melatonin treatment on cap browning and biochemical attributes of Agaricus bisporus during low temperature storage

Author:
Shekari, Aydin; Hassani, Rahim Naghshiband; Aghdam, Morteza Soleimani; Rezaee, Mehdi; Jannatizadeh, Abbasali
Source:
Food chemistry 2021 v.348 pp. 129074
ISSN:
0308-8146
Subject:
ascorbic acid,   etc   ; Agaricus bisporus; cold storage; enzyme activity; firmness; food chemistry; gene expression; melatonin; weight loss;     Show all 9 Subjects
Abstract:
... Exogenous melatonin application at 0, 1, 10, 100, and 1000 µM retarded cap browning of button mushrooms (Agaricus bisporus) by 78.35, 31.40, 30.91, 27.17, and 32.50 %, respectively.Mushrooms treated with 100 µM melatonin also had lower weight loss and higher firmness. During the first 5 days of storage at 4 °C, higher H₂O₂ accumulation may serve as a signal for promoting endogenous melatonin accum ...
DOI:
10.1016/j.foodchem.2021.129074