Journal of Materials Chemistry A
·
2023
·Vol. 11
·期 26
·14311-14319
·
IF 11.9
Lantao Liu,Ziyu Sun,Yaping Lu,Jiapeng Zhang,Yiming Li,Gaixia Zhang,Xiaohong Chen,Sasha Omanovic,Shuhui Sun,Huaihe Song
Due to the environmental friendliness and high safety of aqueous Zn-ion hybrid capacitors (ZIHCs), the exploration of high-performance porous carbon electrodes for ZIHCs has recently attracted significant attention. However, most of the reports focus on the preparation method and modification of porous carbon, and rarely explore the mechanisms of material synthesis/fabrication in the carbonization process. In this study, we developed a simple self-template method for preparing N-doped porous carbon from D-calcium pantothenate (DCP). More importantly, the morphology evolution, heteroatom doping, and defect generation of the DCP during carbonization are clarified. Based on a clear understanding of the carbonization mechanism, assisted by DFT theoretical simulations, we find the optimal carbonization temperature of the DCP-derived porous carbon for ZIHCs. The assembled ZIHCs exhibit excellent rate performance (140 mA h g−1 at 0.2 A g−1 and 86.2 mA h g−1 at 6.4 A g−1), and high energy density and power density (111.1 W h kg−1 and 4835.2 W kg−1, respectively). This work provides a constructive avenue for designing high-performance ZIHC electrode materials.
研究领域:
材料科学
·
电化学
·
能源存储
·
纳米材料
·
碳材料
·
电化学储能
✓ 已验证
DOI
高影响因子
3 Biotech
·
2022
·Vol. 12
·期 9
·1-15
·
IF 2.893
Weng Chunyue,Mi Zheyan,Li Meijing,Qin Haibin,Hu Zhongce,Liu Zhiqiang,Zheng Yuguo,Wang Yuanshan
To improve S-Adenosyl-L-methionine (a compound with important physiological functions, SAM) production, atmospheric and room temperature plasma and ultraviolet-LiCl mutagenesis were carried out with Saccharomyces cerevisiae strain ZY 1–5. The mutants were screened with ethionine, L-methionine, nystatin and cordycepin as screening agents. Adaptive evolution of a positive mutant UV6-69 was further performed by droplet microfluidics cultivation with ethionine as screening pressure. After adaptation, mutant T11-1 was obtained. Its SAM titer in shake flask fermentation reached 1.31 g/L, which was 191% higher than that of strain ZY 1–5. Under optimal conditions, the SAM titer and biomass of mutant T11-1 in 5 L bioreactor reached 10.72 g/L and 105.9 g dcw/L (142.86% and 34.22% higher than those of strain ZY 1–5), respectively. Comparative transcriptome analysis between strain ZY 1–5 and mutant T11-1 revealed the enhancements in TCA cycle and gluconeogenesis/glycolysis pathways as well as the inhibitions in serine and ergosterol synthesis of mutant T11-1. The elevated SAM synthesis of mutant T11-1 may attribute to the above changes. Taken together, this study is helpful for industrial production of SAM.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
JOURNAL OF THE SCIENCE OF FOOD AND AGRICULTURE
·
2021
·Vol. 101
·期 15
·6271-6280
·
IF 3.639
Naymul Karim,Mohammad Rezaul Islam Shishir,Tao Bao,Wei Chen
BACKGROUND Shiitake mushroom is one of the most popular delicious vegetables, although fresh shiitake mushroom has short shelf life as a result of biochemical degradation. Drying can prolong the shelf life of mushroom. Additionally, application of cold plasma pretreatments (CPT) before drying can preserve the product quality, processing costs and nutritional values. Therefore, we aimed to explore the effect of cold plasma pretreated hot-air drying at 50, 60 and 70 °C on the physicochemical characteristics, nutritional values and antioxidant activity of shiitake mushroom. RESULTS Scanning electron microscopy micrographs showed that CPT induced the surface modification of fresh shiitake (such as cellular disarrangement, cellular shrinkages, disruption or break down of cell walls, and intracellular spaces and cavities) and facilitate the rapid drying than control samples. Furthermore, CPT improved the powder qualities (bulk density, water retention and swelling index) and preserved higher nutritional attributes (sugars, vitamins, phenolic acids contents and antioxidant activity) compared to the control groups. CONCLUSION Conclusively, CPT could be a suitable alternative technique for improving drying characteristics and preserving nutritional attributes of agro-based products. © 2021 Society of Chemical Industry.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
SCIENCE OF THE TOTAL ENVIRONMENT
·
2020
·
IF 6.551
Naiyi Yin,Zeliang Han,Huili Du,Pengfei Wang,Yunpeng Li,Xiaochen Chen,Guoxin Sun,Yanshan Cui,Zhengyi Hu
To determine the effect of vitamin supplements on the oral bioaccessibility of Pb in soils, Pb bioaccessibility was measured in the presence of 9 vitamins by a physiologically based extraction test. Gastric Pb bioaccessibility (G-BA, 2.6–83.3%) was found to be mostly reduced (1.1–3.1 fold) in the presence of B vitamins, specifically vitamins B1, B6, and B9. In contrast, a significant increase in Pb G-BA was observed with vitamin C and E involved. In the small intestinal phases, Pb bioaccessibility (I-BA) ranged from 0.1% to 16.0%, being 5–50 fold lower than the corresponding G-BA values. Vitamin C supplementation showed a 7-fold increase in Pb I-BA, with a similar increase presented in approximately 30% of samples treated to vitamin B involvement. Lead liberation in gastrointestinal digests was associated with the dissolution of Fe and Mn regulated by vitamins. In conclusion, the addition of B vitamins resulted in the reduction of gastric Pb bioaccessibility, but the bioaccessibility value increased in participation of vitamin C and E. Elevated intestinal bioaccessibility was found especially for vitamin C. This should contribute to more accurate assessment of health risks from contaminated soils. Nutritional management aimed at preventing Pb-induced toxicity can benefit from knowledge of vitamin influence on soil Pb bioaccessibility.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
LIFE SCIENCES
·
2020
·
IF 3.647
Zhuo Wang,Weixiao Nan,Huazhe Si,Shiyong Wang,Haihua Zhang,Guangyu Li
Aims Pantothenic acid (PA) has been applied to treat alopecia, but the underlying mechanism is still unclear. Our study aims to explore the underlying mechanism of PA in regulating hair follicle (HF) growth. Main methods Mink HFs and dermal papilla (DP) cells were isolated and cultured in vitro . HFs and DP cells were treated with 0, 10, 20, 40 μg/ml PA. The effect of PA on HF growth, DP cell proliferation, cell cycle distribution, cell migration, and insulin-like growth factor-1 (IGF-1) and vascular endothelial growth factor (VEGF) expressions in DP cells was measured. Moreover, the effect of PA on inhibitor of DNA binding 3 (ID3)/Notch signaling pathway was analyzed. Subsequently, ID3 was silenced to validate whether ID3/Notch signaling pathway was involved in regulating DP cell proliferation by PA. Key findings Both 20 μg/ml and 40 μg/ml PA promoted HF growth, G1/S transition of DP cells and IGF-1 and VEGF expressions in DP cells, while only 20 μg/ml PA promoted cell viability and the migration of DP cells. Thus 20 μg/ml PA was chosen for the following experiments. PA treatment was found to up-regulate ID3 expression but down-regulate Notch receptor 1 (Notch1) and Notch signaling targets expressions. Furthermore, ID3 knockdown reversed PA-induced cell proliferation and inhibition of Notch1 and Notch signaling targets expressions, indicating that PA-induced DP cell proliferation and inhibition of Notch signaling were mediated via up-regulation of ID3. Significance This study provides an underlying mechanism related to the effect of PA on stimulating DP cell proliferation.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Aquaculture Reports
·
2024
·
IF 3.2
Kangyuan Qu,Siyuan Xiong,Caiqian Huang,Xiaoxia Jiang,Lixia Tian,Shiwei Xie
Ornithine is an arginine family amino acid and is not incorporated into protein. This study evaluated its role in growth, immune response and acute NH 3 stress tolerance of Penaeus vannamei . Six diets with graded levels (0.6, 0.9, 1.2, 1.5, 1.8, 2.1 g kg −1 ) of L-ornithine were formulated, and fed the shrimp for 8 weeks. The growth of shrimp was significantly improved with the dietary ornithine levels increased from 0.6 to 1.5 g kg −1 . Feed efficiency, protein efficiency ratio and protein productive value showed a similar trend to the growth performance of shrimp. Whole body protein and muscle lipid of shrimp were significantly increased in shrimp fed 1.8 g kg −1 ornithine compared to those fed 0.6 g kg −1 ornithine. The contents of several amino acids were increased with the dietary ornithine increased to 1.5 g kg −1 . Elevated levels of ornithine increased the Nitric Oxide (NO) content and suppressed arginase activity in the hemolymph. The relative mRNA expression of superoxide dismutase , heat shock protein 70 , dorsal and caspase 3 were increased with the dietary addition of ornithine, while the mRNA level of arginase was decreased with the increasing dietary ornithine levels. After 9 h acute NH 3 stress, mortality of shrimp reduced with the increasing dietary ornithine levels. The relative mRNA levels of superoxide dismutase , heat shock protein 70 , dorsal and catalase were increased with the dietary addition of ornithine after the acute NH 3 stress. The second-order regression analysis of weight gain and survival after acute stress revealed that the suitable ornithine content in the shrimp diet was 1.4–1.5 g kg −1 .
✓ 已验证
产品关联
DOI
高影响因子
Food Frontiers
·
2025
·Vol. 6
·期 2
·1058-1078
·
IF 6.9
Haolin Zhang,Jingjing Zhang,Hui Cao,Petra Högger,Randolph Arroo,Mohamed A. Farag,Avi Shpigelman,Jianbo Xiao,Chunlin Li
A class of flavonoid aminated derivatives that had been consistently overlooked in literature was shown to be formed as artefacts in cell culture medium. In this study, 34 flavonoids from different subclasses were incubated in Dulbecco's modified Eagle's Medium (DMEM) at 37°C for 2 h to identify the reaction mechanism behind aminated derivatives formation from flavonoids. Baicalein, scutellarein, dihydromyricetin, (−)-gallocatechin (GC), (−)-epigallocatechin (EGC), (−)-GC gallate, and (−)-EGC gallate were found to yield corresponding nitrogenous derivatives in both DMEM and amino acid solution. The nitrogen source of these seven flavonoid -aminated derivatives was revealed to be amino acids in DMEM. The pyrogallol group of the flavonoids was a key structural motif, being first oxidized into quinone and then further reacting with amino acids (Strecker degradation) to yield aminated flavonoids and corresponding aldehydes. A slightly alkaline environment accelerated the amination of flavonoids, possibly via the formation of flavonoid quinone. These results provide the mechanistic evidence for the in vitro generation of flavonoid -aminated derivatives, yet to be tested using in vivo assays.
✓ 已验证
产品关联
DOI
高影响因子
危险品化学品经营许可证（带存储）