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You searched for: Subject "ascorbic acid" Remove constraint Subject: "ascorbic acid"
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1. Application of sugar-containing biomass: one-step synthesis of 2-furylglyoxylic acid and its derivatives from a vitamin C precursor

Author:
Jiao Chen; Zhenhua Zhu; Jiali Cai; Mengru Cao; Feng Sha; Sha Tao; Hao Yang; Haifeng Gan; Hongli Wu; Fei Cao; Lili Zhao; Pingkai Ouyang
Source:
Green chemistry 2022 v.24 no.5 pp. 2000-2009
ISSN:
1463-9270
Subject:
ascorbic acid,   etc   ; biomass; esterification; green chemistry;     Show all 4 Subjects
Abstract:
... We developed a novel pathway for preparing the high-value pharmaceutical intermediate 2-furylglyoxylic acid (2FGA) from 2-keto-l-gulonic acid (2KGA), a bio-based sugar-acid monomer and precursor of vitamin C, via dehydration. 100 g L⁻¹ methyl 2-keto-l-gulonicate (Me-2KGA) was transformed into methyl 2-furylglyoxylicate (Me-2FGA) with a maximum yield of 79.4%, competing with the yields obtained via ...
DOI:
10.1039/d2gc00186a

2. The study of volatile products formation from the self-degradation of l-ascorbic acid in hot compressed water

Author:
Liang Feng; Yan Yang; Shuang-shuang Liu; Ding-yun Tan; Chun Tan; Ai-nong Yu
Source:
Food chemistry 2022 v.371 pp. 131155
ISSN:
0308-8146
Subject:
ascorbic acid,   etc   ; food chemistry; furfural; pH; temperature;     Show all 5 Subjects
Abstract:
... The volatile products (VPs) formation from the self-degradation of l-ascorbic acid (ASA) in hot compressed water (HCW) was investigated with different reaction parameters, such as time, temperature, pH and ratio of ASA/water. The results showed that various reaction parameters had varying degrees of influence on the reaction, while the most significant effect factor was the initial pH of the solut ...
DOI:
10.1016/j.foodchem.2021.131155

3. Mechanism of viscosity reduction of okra pectic polysaccharide by ascorbic acid

Author:
Xiumei Zhu; Jinyin Chen; Hui Wang; Zongcai Tu; Junyi Yin; Shaoping Nie
Source:
Carbohydrate polymers 2022 v.284 pp. 119196
ISSN:
0144-8617
Subject:
ascorbic acid,   etc   ; molecular weight; okra; pectins; temperature; viscosity;     Show all 6 Subjects
Abstract:
... In this work, effects of ascorbic acid (AH₂) treatment on the viscosity and structural properties of okra pectic polysaccharide (OPP) and its mechanism were investigated. Results showed that AH₂ could decrease the apparent viscosity of OPP, and the reducing ability was promoted by high temperature and the addition of Fe²⁺, Cu²⁺ or H₂O₂. The molecular weight was significantly decreased with increas ...
DOI:
10.1016/j.carbpol.2022.119196

4. Relationship between Vitamin C Deficiency and Cognitive Impairment in Older Hospitalised Patients: A Cross-Sectional Study

Author:
Yogesh Sharma; Alexandra Popescu; Chris Horwood; Paul Hakendorf; Campbell Thompson
Source:
Antioxidants 2022 v.11 no.3 pp. -
ISSN:
2076-3921
Subject:
ascorbic acid; ascorbic acid deficiency,   etc   ; antioxidants; cognition; cognitive disorders; cross-sectional studies; high performance liquid chromatography; prospective studies; regression analysis; synaptic transmission; Australia;     Show all 11 Subjects
Abstract:
... Vitamin C is a powerful antioxidant and facilitates neurotransmission. This study explored association between vitamin C deficiency and cognitive impairment in older hospitalised patients. This prospective study recruited 160 patients ≥ 75 years admitted under a Geriatric Unit in Australia. Cognitive assessment was performed by use of the Mini-Mental-State-Examination (MMSE) and patients with MMSE ...
DOI:
10.3390/antiox11030463

5. Effects of microwave drying on nutrient component and antioxidant activity of persimmon slices

Author:
Zhenzhen Wei; Zhenhua Duan; Xiaoxian Tang; Yanting Qin; Siyun Zhou; Weiwen Duan; Yan Liu
Source:
Journal of food measurement & characterization 2022 v.16 no.2 pp. 1744-1753
ISSN:
2193-4126
Subject:
ascorbic acid,   etc   ; antioxidant activity; food quality; measurement; persimmons; phenols;     Show all 6 Subjects
Abstract:
... The impact of drying on the nutritional compositions of products is one of the crucial issues restricting the advance of food quality, but there has been a lack of systematic research on the variation characteristics of nutritional components of persimmon during microwave drying. The objective of this work was to investigate the effects of microwave power, slice thickness and loading amount on the ...
DOI:
10.1007/s11694-021-01273-2

6. Efficiency of pre‐process anoxia treatment on quality of fresh‐cut pineapples cv. ‘Phulae’ during storage

Author:
Suriyan Supapvanich; Chairat Techavuthiporn
Source:
International journal of food science & technology 2022 v.57 no.3 pp. 1679-1687
ISSN:
0950-5423
Subject:
ascorbic acid,   etc   ; food science; hypoxia; pineapples; weight loss; yeasts;     Show all 6 Subjects
Abstract:
... The aim of this study was to investigate the competency of pre‐process anoxia treatment on physicochemical quality of fresh‐cut pineapples cv. ‘Phulae’ during storage. The fruits were kept in anoxia atmosphere (N₂) for 16 h before processing. The fruits were processed immediately after treatment (G1) and after storage at 13 °C for 6 days (G2). Anoxia treatment delayed the weight loss and had no ef ...
DOI:
10.1111/ijfs.15533

7. Using ethnobotanical plants in food preparation: Cuckoo pint (Arum maculatum L.)

Author:
Firuze Ceylan; Semra Akar Sahingoz
Source:
International journal of gastronomy and food science 2022 pp. 100529
ISSN:
1878-450X
Subject:
ascorbic acid,   etc   ; Arum maculatum; Cuculidae; ethnobotany; gastronomy; iron; soups;     Show all 7 Subjects
Abstract:
... This study aimed to perform a nutritional analysis of cuckoo pint soup, a traditional dish made from cuckoo pint (Arum maculatum L.) that is a self-growing plant found in many countries including Turkey. Adopting an experimental research method this study included the preparation of the soup using traditional cooking technique. In addition to all raw ingredients used for making the cuckoo pint sou ...
DOI:
10.1016/j.ijgfs.2022.100529

8. Revealing inhibitory mechanism of thiamine on the formation of 2-amino-3,8-dimethylimidazo[4,5-f] quinoxaline based on quantum chemistry calculations and experimental verification

Author:
Jiageng Li; Feixue Wu; Yiqun Huang; Junjian Miao; Keqiang Lai
Source:
Lebensmittel-Wissenschaft + Technologie 2022 pp. 113552
ISSN:
0023-6438
Subject:
ascorbic acid,   etc   ; creatinine; glucose; niacin; nicotinamide; pyridoxine; thiamin; water solubility;     Show all 8 Subjects
Abstract:
... The effects of five water-soluble vitamins (thiamine, nicotinic acid, nicotinamide, pyridoxine, l-ascorbic acid) on the formation of MeIQx in a chemical model system containing glycine/glucose/creatinine were investigated. Thiamine was the most potential inhibitor among these five vitamins, which could reduce the formation of MeIQx by 33.9%–100.0%, depending on the concentration of thiamine. Furth ...
DOI:
10.1016/j.lwt.2022.113552

9. Bio inspired growth factor loaded self assembling peptide nano hydrogel for chronic wound healing

Author:
E. Santhini; R. Parthasarathy; M. Shalini; S. Dhivya; L. Amalorpava Mary; V. Vijaya Padma
Source:
International journal of biological macromolecules 2022 v.197 pp. 77-87
ISSN:
0141-8130
Subject:
ascorbic acid,   etc   ; Escherichia coli; ambient temperature; biofilm; hydrogels; hydroxyproline; peptides; rheometry;     Show all 8 Subjects
Abstract:
... Self assembling peptidebased hydrogel has been explored for delivering growth factors, anticancer drugs, antibiotics etc. Here, RADA 16-I (RADARADARADARADA), an ionic self complementary peptide that forms a well defined nanohydrogel has been studied for its ability to deliver PDGF-BB in a sustained manner and to destruct biofilm formed by wound specific pathogens. Results of the structural analysi ...
DOI:
10.1016/j.ijbiomac.2021.12.026

10. Effects of sulfite treatment on the quality of black fungus

Author:
Yichen Ren; Jintao Huang; Xingnan Wang; Yaqin Wang; Hongcai Li; Tianli Yue; Zhenpeng Gao
Source:
Food chemistry 2022 v.385 pp. 132685
ISSN:
0308-8146
Subject:
ascorbic acid,   etc   ; color; flavonoids; food chemistry; fungi; polyphenols; sodium metabisulfite; sulfites;     Show all 8 Subjects
Abstract:
... In the present study, the color, total sugar, contents of soluble protein, total polyphenols, total flavonoids, and soluble vitamins, and other indicators of black fungus treated with sodium metabisulfite under different conditions were measured to evaluate the sensory and nutritional changes in black fungus after sulfite treatment. The results showed that use of sodium metabisulfite increased the ...
DOI:
10.1016/j.foodchem.2022.132685

11. Facile one-pot synthesis of tannic acid-stabilized fluorescent copper nanoclusters and its application as sensing probes for chlortetracycline based on inner filter effect

Author:
Yu-yu Guo; Yu-rui Hu; Shao-ke Chen; Ming-zhu Guo; Yi-ting Zhang; Xin-rui Han; Shen Zhang
Source:
Colloids and surfaces 2022 v.634 pp. 127962
ISSN:
0927-7757
Subject:
ascorbic acid,   etc   ; blood serum; cattle; chlortetracycline; detection limit; fluorescence; synthesis; tannins;     Show all 8 Subjects
Abstract:
... In this paper, a simple and one-pot synthetic strategy was established to prepare copper nanoclusters by using tannic acid as the template and ascorbic acid as the reducing agent. The tannic acid-capped copper nanoclusters (Cu NCs@TA) displayed excitation and emission peaks around 365 and 435 nm with fluorescence quantum yield of 9.8%. Based on the inner filter effect and static quenching mechanis ...
DOI:
10.1016/j.colsurfa.2021.127962

12. Green preparation of carbon quantum dots with wolfberry as on-off-on nanosensors for the detection of Fe3+ and l-ascorbic acid

Author:
Lin Gu; Jingru Zhang; Guangxin Yang; Yunyu Tang; Xuan Zhang; Xuanyun Huang; Wenlei Zhai; Essy Kouadio Fodjo; Cong Kong
Source:
Food chemistry 2022 v.376 pp. 131898
ISSN:
0308-8146
Subject:
ascorbic acid,   etc   ; Lycium; detection limit; fluorescence; food chemistry; lakes; sensors (equipment);     Show all 7 Subjects
Abstract:
... A green and facile hydrothermal synthesis approach is proposed for the preparation of nitrogen-doped carbon quantum dots (N-CQDs) with wolfberry. These N-CQDs were developed as a highly sensitive fluorescent ‘on-off-on’ switch sensor for the sensing of Fe³⁺ and l-ascorbic acid (AA). The N-CQDs displayed superior fluorescence characteristics of CQDs with a quantum yield up to 22%. The N-CQDs were d ...
DOI:
10.1016/j.foodchem.2021.131898

13. DNA methylation mediated by melatonin was involved in ethylene signal transmission and ripening of tomato fruit

Author:
Shuangshuang Shan; Zhiqiang Wang; Huili Pu; Wenhui Duan; Hongmiao Song; Jiangkuo Li; Zhengke Zhang; Xiangbin Xu
Source:
Scientia horticulturae 2022 v.291 pp. 110566
ISSN:
0304-4238
Subject:
ascorbic acid,   etc   ; DNA methylation; color; ethylene; fruits; genomic islands; lycopene; melatonin; tomatoes;     Show all 9 Subjects
Abstract:
... Melatonin (MT) as an evolutionarily highly conserved molecule plays an exceptional role in plants. In the present study, the regulation mechanism of the DNA methylation of CpG islands of ethylene signaling genes induced by MT on postharvest ripening of tomato fruit was studied. The ripening of tomato fruit was significantly promoted by the 0.5 mM MT treatment, as revealed by the appearance color, ...
DOI:
10.1016/j.scienta.2021.110566

14. Development of biopolymeric films with addition of vitamin C and catuaba extract as natural antioxidants

Author:
Jéssica Fernanda Pereira; Audrey A. S. Garcia Lonni; Suzana Mali
Source:
Preparative biochemistry & biotechnology 2022 v.52 no.1 pp. 1-10
ISSN:
1532-2297
Subject:
ascorbic acid,   etc   ; antioxidant activity; biotechnology; cassava starch; gelatin; glycerol; industry; plasticizers; polymers;     Show all 9 Subjects
Abstract:
... Sustainability has been an important issue in cosmetic industry, resulting in increasing concerns about environmental impacts, starting by the selection of raw materials. The aim of this work was the production of biopolymeric films based on a cassava starch and gelatin mixture (1:1) with the incorporation of natural antioxidants, such as vitamin C and catuaba extract aiming its future use as an e ...
DOI:
10.1080/10826068.2021.1916755

15. Evaluation of total phenols content, anti-DPPH activity and the content of selected antioxidants in the honeybee drone brood homogenate

Author:
Róża Sawczuk; Joanna Karpinska; Diana Filipowska; Andrzej Bajguz; Marta Hryniewicka
Source:
Food chemistry 2022 v.368 pp. 130745
ISSN:
0308-8146
Subject:
ascorbic acid,   etc   ; alpha-tocopherol; antioxidant activity; apiaries; food chemistry; health promotion; pollution;     Show all 7 Subjects
Abstract:
... The subject of the present research is the evaluation of health-promoting properties caused by the presence of some vitamins as well as the antioxidative potential of the honeybee drone brood homogenate (DBH). The study used 139 homogenate samples obtained from various apiaries and collected over 3 years, three times during each beekeeping season. Samples differed in terms of varroa infestation, s ...
DOI:
10.1016/j.foodchem.2021.130745

16. Foliar supplementation of ascorbic acid modulates biochemical performance of silkworm, Bombyx mori under thermal stress

Author:
U. Aneesha; C.V. Sreeranjit Kumar
Source:
Journal of thermal biology 2022 v.104 pp. 103184
ISSN:
0306-4565
Subject:
ascorbic acid,   etc   ; Bombyx mori; DNA; RNA; dietary supplements; instars; silkworms; thermal stress;     Show all 8 Subjects
Abstract:
... Dietary supplementation of ascorbic acid was found to be effective in modifying the composition of essential biomolecules. A relative investigation on effects of exogenous dietary supplementation of 0.2% ascorbic acid on the fifth instar larvae of silkworm, Bombyx mori exposed to a high thermal stress of range 40 ± 2 °C was carried out in the lab-set conditions. The observed elevation in various b ...
DOI:
10.1016/j.jtherbio.2021.103184

17. Improving tomato juice concentration process through a novel ultrasound-thermal concentrator under vacuum condition: A bioactive compound investigation and optimization

Author:
Behnam Alaei; Reza Amiri Chayjan; Mohammad Ali Zolfigol
Source:
Innovative food science & emerging technologies 2022 v.77 pp. 102983
ISSN:
1466-8564
Subject:
ascorbic acid,   etc   ; bioactive compounds; energy; food science; lycopene; temperature; tomato juice; ultrasonics;     Show all 8 Subjects
Abstract:
... We investigated the simultaneous effects of temperature, ultrasound, and vacuum pressure in the tomato juice concentration process. To this end, a novel ultrasound-thermal concentrator under vacuum conditions was fabricated. The process was performed at three levels of ultrasound power (48, 84, and 120 W), three vacuum pressures (10, 20, and 30 kPa), and three temperatures (50, 60, and 70 °C). Als ...
DOI:
10.1016/j.ifset.2022.102983

18. A new cyclic polyketide and other constituents from Ononis spinosa growing wildly in Jordan and their antioxidant activity

Author:
Musa H. Abu Zarga; Hala I. Al-Jaber; Mahmoud A. Al-Qudah; Amal M. F. Al-Aboudi
Source:
Journal of Asian natural products research 2022 v.24 no.3 pp. 290-295
ISSN:
1477-2213
Subject:
ascorbic acid,   etc   ; Ononis spinosa; alpha-tocopherol; antioxidant activity; polyketides; research; spectral analysis; Jordan;     Show all 8 Subjects
Abstract:
... The new cyclic polyketide 7,9,11-trihydroxytetracos-2-eneoic acid δ-lactone (1), together with other eleven known compounds, were isolated from Ononis spinosa, growing wildly in Jordan. All isolated compounds were identified by thorough investigation of their spectral data including NMR and HRESIMS. Antioxidant activity testing of puerol B, specionin and the new cyclic polyketide revealed that pue ...
DOI:
10.1080/10286020.2021.1914597

19. Ascorbic Acid Reduces Neurotransmission, Synaptic Plasticity, and Spontaneous Hippocampal Rhythms in In Vitro Slices

Author:
Segewkal H. Heruye; Ted J. Warren; Joseph A. Kostansek IV; Samantha B. Draves; Stephanie A. Matthews; Peter J. West; Kristina A. Simeone; Timothy A. Simeone
Source:
Nutrients 2022 v.14 no.3 pp. -
ISSN:
2072-6643
Subject:
ascorbic acid,   etc   ; brain; memory; mice; neuroplasticity; neurotransmitters; oxidative stress; plasticity; synapse; synaptic transmission;     Show all 10 Subjects
Abstract:
... Ascorbic acid (AA; a.k.a. vitamin C) is well known for its cellular protection in environments of high oxidative stress. Even though physiological concentrations of AA in the brain are significant (0.2–10 mM), surprisingly little is known concerning the role of AA in synaptic neurotransmission under normal, non-disease state conditions. Here, we examined AA effects on neurotransmission, plasticity ...
DOI:
10.3390/nu14030613

20. Characterization of a sorbose oxidase involved in the biosynthesis of 2-keto-L-gulonic acid from Gluconobacter oxydans WSH-004

Author:
Yue Chen; Dong Li; Xiaoyu Shan; Jingwen Zhou; Jian Chen
Source:
Process biochemistry 2022 v.116 pp. 1-7
ISSN:
1359-5113
Subject:
ascorbic acid,   etc   ; Gluconobacter oxydans; NADP (coenzyme); biosynthesis; catalytic activity; fermentation; sorbose; sorbose dehydrogenase;     Show all 8 Subjects
Abstract:
... 2-Keto-L-gulonic acid (2-KLG), the direct precursor of vitamin C, can be synthesized from L-sorbose by many microorganisms via “sorbose dehydrogenase” and “sorbosone dehydrogenase (SNDH)”. However, only a few studies were carried out on the catalytic properties of sorbose dehydrogenase in Gluconobacter oxydans. In this study, sorbose dehydrogenase of G. oxydans WSH-004 was identified. Different fr ...
DOI:
10.1016/j.procbio.2022.02.019