SENSORS AND ACTUATORS B-CHEMICAL
·
2025
·
IF 7.7
Tao Liao,Dan Hou,Hao Huang,María Belén Camarada,Xiaoning Liao
Herein, a novel ratiometric molecularly imprinted electrochemical sensor (MIP-RECS) based on Ag nanoparticles (AgNPs) and ionic liquid (IL) co-modified Ti 2 NTx (AgNPs@Ti 2 NT x @IL) was developed for the determination of patulin (PAT). Firstly, the AgNPs@Ti 2 NT x @IL nanocomposite, was prepared by an in situ reduction and self-assembled method, and then, was cast on the glassy carbon electrode (GCE) to build an electrochemical interface with excellent conductivity and high surface area. After that, the MIP was deposited on the nanocomposite modified GCE by the electro-polymerization technique, with thionine (Thi) and PAT as functional monomer and template molecules. In the sensing platform, the oxidation peaks generated by Thi and AgNPs were used as reference and probe signal, respectively. The introduction of reference effectively eliminates the influence of the matrix effect. At the same time, the oxidation signal of the Ag probe is greatly improved by the high conductivity and large surface area of the AgNPs@Ti 2 NT x @IL nanocomposite. Therefore, the MIP-RECS presented a wide linear range, a very low low limit of detection (LOD), together with high selectivity and excellent repeatability. Additionally, the linearity ranges and LODs of the sensor can be controlled by the amount of Ag, highlighting its robustness in different types of real samples. Furthermore, this sensing model can be used to sensitively detect other residues with poor redox activity, such as imidacloprid and catechol, highlighting its versatility and universality.
✓ 已验证
产品关联
DOI
高影响因子
Biomass Conversion and Biorefinery
·
2023
·
IF 4
Lu Yanyu,Lin Changqu,Yang Hao,Ma Peipei,Chen Jishuang,He Zhuang,Wu Hongli,Cao Fei,Chen Kequan,Ouyang Pingkai
Abstract FDCA (2,5-furandicarboxylic acid), produced by oxidizing carbohydrate-derived HMF (5-hydroxymethylfurfural), is a valuable monomer for biopolymers. The difference in the solvent system between the dehydration reaction and oxidation reactions seriously affects the process continuity and production efficiency. Herein, we reported a cascade process for FDCA production from carbohydrates in a single acetic acid system. The fructose conversion was complete and total furan compounds yield reached nearly 90%, which contained 42.8% HMF and 47.1% 5-acetoxymethylfurfural (AMF) in the acetic acid system with NaBr addition. After the azeotropic distillation and vacuum distillation in situ, AMF, a more stable intermediate than HMF, could be easily collected with 90.5% recovery and 99.9% purity. AMF was also oxidized into FDCA with 91.1% yield by Co/Mn/Br catalysts in the acetic acid system. Finally, the cascade process, including fructose dehydration–esterification and HMF/AMF mixture oxidation, was successfully realized in a single acetic acid system. This process is simple to operate, easy to implement, eliminates the use of extra acid or self-made catalysts and expensive solvents, and has the potential for continuous preparation from carbohydrates to FDCA. Graphical Abstract
✓ 已验证
产品关联
DOI
高影响因子
ACS Applied Nano Materials
·
2023
·
IF 5.9
Li Sun,Chunlai Cao,Yuan Zhi,Yuejin Shan,Hua Zhang,Binlin Dou,Lixin Zhang,Weijia Huang
Surface-enhanced Raman scattering (SERS) technique has been limitedly applied to the detection of trace thiram due to the weak activity of employed substrates. In this work, Au–Ag nanoparticles (NPs) with controllable morphologies are synthesized and used as SERS-active substrates for the detection of trace thiram. Porous–spiny Au–Ag NPs are synthesized with spherical Ag NPs as intermediates through in situ redox. Annular Au–Ag NPs can be further obtained by heating porous–spiny Au–Ag NPs. Here, the morphology transformation of Au–Ag NPs is first completed by means of the element diffusion theory, providing a strategy for the morphology control of complex Au–Ag NPs. Additionally, these Au–Ag NPs with optimized morphologies were chosen as substrates for the successful SERS detection of trace thiram. Especially, porous–spiny Au–Ag NPs show superior sensitivity and reproducibility. Meanwhile, using porous–spiny Au–Ag NPs as SERS-active substrates, thiram can be quantitatively detected in the range from 10–3 to 10–11 M. Thus, it is inferred that Au–Ag NPs with optimized morphologies will have great potential in the field of trace analyte detection related to food safety and environmental protection.
✓ 已验证
产品关联
DOI
高影响因子
Foods
·
2023
·Vol. 12
·期 8
·1590
·
IF 5.2
Yaxian Chen,Yini Cai,Zhimin Zhao,Depo Yang,Xinjun Xu
In this study, the hot water extraction process of crude polysaccharides from Morindae officinalis radix (cMORP) was conducted and optimized through a single-factor test and orthogonal experimental design. With the optimal extraction process (extraction temperature of 80 °C, extraction time of 2 h, liquid/solid ratio of 15 mL/g, and number of extraction of 1), the cMORP was obtained by the ethanol precipitation method. The chemical properties and preliminary characterization of the cMORP were analyzed by chemical or instrumental methods. Furthermore, to indicate a preliminary study on safety, a single oral dose of 5000 mg/kg body weight (BW) was administered orally to Kunming (KM) mice for acute toxicity, and the cMORP was administered orally to KM mice once a day at doses of 25, 50, and 100 mg/kg BW for 30 days. General behaviors, body weight variations, histopathology, relative organ weights, and hematological and serum biochemical parameters were observed and recorded. The results suggested there were no toxicologically significant changes. Based on the safety study, cMORP can be initially considered non-toxic with no acute oral toxicity up to 5000 mg/kg BW and safe at up to 100 mg/kg BW in KM mice for 30 days.Keywords:Morindae officinalis radix;crude polysaccharides;hot water extraction;optimization;preliminary characterization;safety study
✓ 已验证
产品关联
DOI
PubMed
高影响因子
iScience
·
2023
·
IF 5.8
Meng Xiao,Ningxia Xu,Aitong He,Zipei Yu,Bo Chen,Baohui Jin,Lelun Jiang,Changqing Yi
Summary Cost-effective and user-friendly quantitation at points-of-need plays an important role in food safety inspection, environmental monitoring, and biomedical analysis. This study reports a stand-alone smartphone-based fluorospectrophotometer (the SBS) installed with a custom-designed application (the SBS-App) for on-site quantitation of pesticide using a ratiometric sensing scheme. The SBS can collect fluorescence emission spectra in the wavelength range of 380-760 nm within 5 s. A ratiometric fluorescence probe is facilely prepared by directly mixing the blue-emissive carbon nanodots (the Fe 3+ -specific fluorometric indicator) and red-emissive quantum dots (the internal standard) at a ratio of 11.6 (w/w). Based on the acetylcholinesterase/choline oxidase dual enzyme-mediated cascade catalytic reactions of Fe 2+ /Fe 3+ transformation, a ratiometric fluorescence sensing scheme is developed. The practicability of the SBS is validated by on-site quantitation of chlorpyrifos in apple and cabbage with a comparable accuracy to the GC-MS method, offering a scalable solution to establish a cost-effective surveillance system for pesticide pollution.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
LWT-FOOD SCIENCE AND TECHNOLOGY
·
2023
·
IF 6
Yurou Yun,Jian Li,Fei Pan,Yijun Zhou,Xiangqiao Feng,Jun Tian,Shengbao Cai,Junjie Yi,Linyan Zhou
Low-sugar jams (LSJ) are promoted as a healthier food option due to the healthy trend, and significant color changes negatively affects the evaluation of these products. To reveal protective effect of low methoxyl & amidated pectin (LMA) on anthocyanin in jam treated by high-pressure processing (HPP), this study compared the changes in microbes and quality attributes of LSJ prepared with LMA and high-sugar pomegranate jam (HSJ) prepared with high methoxyl pectin (HMP) after HPP at 600 MPa for 5 min during accelerated storage at 35 °C for 30 days, and molecular dynamics simulation was conducted to reveal the interaction between LMA and anthocyanin. LSJ-HPP had better color quality with higher values of L* , a* , and total anthocyanin content (TAC), the corresponding percent polymeric color and browning index were 41% and 16% lower than those of HSJ-HPP, respectively. TAC in LSJ-HPP, HSJ, and HSJ-HPP decreased to 9.5, 8.6, and 6.0 mg/kg (pomegranate puree) after storage, respectively. Cyanidin-3- O -glucoside formed more H-bonds with LMA than HMP, while their total interaction energy and the binding frequency and number were also higher. This study provided a foundation for the processing and storage of high quality LSJ, and also broadened the application field of HPP technology.
✓ 已验证
产品关联
DOI
高影响因子
INDUSTRIAL CROPS AND PRODUCTS
·
2023
·
IF 5.9
Zengyong Li,Wu Lan,Chuanfu Liu
A biomass derived bifunctional catalyst (Ru/CCD-SO 3 H) was used for one-pot conversion of cassava dreg and cassava starch into sorbitol . The cassava dreg is mainly composed of residual cassava starch and holocellulose. The highest sorbitol yield of 11.43 % was achieved using cassava dreg as reactant. A synergistic catalytic effect of acid and metal sites of Ru/CCD-SO 3 H on cassava starch conversion to sorbitol was observed. The maximum sorbitol yield reached 82.51 % using cassava starch as reactant. A kinetic model of cassava starch degradation was performed. The reaction rate constants of cassava starch degradation, glucose conversion and sorbitol generation improved with enhancing temperature. The activation energy of cassava starch hydrolysis is larger than that of glucose hydrogenation, indicating the cassava starch hydrolysis is rate-determining step of cassava starch conversion into sorbitol. This work not only realizes the comprehensive utilization of cassava dreg, but also provides useful guidance for developing kinetic model of polysaccharide conversion.
✓ 已验证
产品关联
DOI
高影响因子
APPLIED CATALYSIS B-ENVIRONMENTAL
·
2023
·
IF 22.1
Yunpeng Liu,Zhongxin Chen,Yunyi Yang,Ren Zou,Binglu Deng,Linxin Zhong,Kian Ping Loh,Xinwen Peng
The major bottleneck in self-powered water splitting devices by renewable energy lies in the kinetically sluggish oxygen evolution reaction (OER), which only produces low-value oxygen. Herein, we explore sucrose electrooxidation as an alternative anodic reaction for production of valuable chemicals at a reduced electricity consumption. By developing a reversible redox cycle of Ni 2+ /Ni 3+ and Co 2+ /Co 3+ in the CoNi layered double hydroxide (LDH), the required voltage of sucrose oxidation for 100 mA cm −2 is reduced by 240 mV compared to oxygen evolution. The sucrose electrooxidation by CoNi LDH is a two-step reaction including the electrooxidation of Ni 2+ /Co 2+ to Ni 3+ /Co 3+ and the spontaneous reaction between Ni 3+ /Co 3+ and sucrose. By feeding with natural sugarcane juice, a solar-driven electrolyser is assembled for the co-production of value-added formic acid and hydrogen. Our work demonstrates a sustainable route for integrating hydrogen production and biomass electrooxidation for energy applications.
✓ 已验证
产品关联
DOI
高影响因子
INTERNATIONAL JOURNAL OF FOOD SCIENCE AND TECHNOLOGY
·
2023
·Vol. 58
·期 6
·3458-3468
·
IF 3.3
Mingyan Liu,Xingzi Yao,Gaowei Zhang,Shengxiang Yi,Xueyong Huang,Fangjian Ning,Liping Luo
Summary Eurya honey (EH) is produced from the nectar of Eurya. In this paper, the physicochemical properties (moisture, free acidity, pH, 5-hydroxymethylfurfural, conductivity, sugar, and colour) of EH were systematically studied for the first time. The total phenols and flavonoids were determined by spectrophotometry, and the contents were 40.29 ± 4.17 mg GAE/100 g and 12.44 ± 0.62 mg RE/100 g, respectively. A total of 232 compounds were identified, and 30 of them were quantified by ultra-performance liquid chromatography coupled with quadrupole/time-of-flight mass spectrometry (UPLC-Q/TOF-MS). The potential markers of EH were abscisic acid (21.3–103.4 μg/100 g), gallic acid (6.9–220.2 μg/100 g), tricoumaroyl spermidine (284.2–518.1 μg/100 g), and kaempferol (15.0–258.7 μg/100 g). EH showed antioxidant capacities in DPPH free radical-scavenging activity (IC 50 : 42.87–131.26 mg mL −1 ), ferric reducing antioxidant capacity (23.22–112.24 μmol FeSO 4 ·7H 2 O/100 g), and ABTS radical-scavenging activity assays (9.51–31.21 μmol Trolox/100 g).
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF LUMINESCENCE
·
2023
·
IF 3.6
Zhifeng Cai,Yi Zhang,Yiming Zhang,Yongjie Bai,Jiayue Huang,Zijing Guo,Huangjing Bao,Jiayi Zhang
Chrysin has carried out intensive interest in medicine areas due to its excellent influences for human health. Precise determination of chrysin is fairly necessary for pharmaceutical quality control and clinical study. Herein, water soluble fluorescent copper nanoclusters (Cu NCs) were developed through one-pot itinerary by utilizing polyvinylpyrrolidone as the stabilizer and ascorbic acid as the reducing agent. The as-obtained Cu NCs emitted bright blue fluorescence and suggested good optical features and outstanding photostability with the quantum yield of 9.27%. The inner filter effect (IFE) should be the main cause of the fluorescence quenching of Cu NCs. For this, a fluorescent system for chrysin determination was carried out by utilizing the Cu NCs as a nanoprobe. The fluorescence weakening efficiency of Cu NCs had a linear relationship to chrysin amounts in the range of 0.5–300 μM, and detection limit of 0.093 μM was obtained. This as-established system was effectively utilized to measure chrysin in real samples.
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY
·
2023
·
IF 6.1
Cong Zhang,Yingying Song,Ming Yuan,Liang Chen,Qianyu Zhang,Junjie Hu,Yan Meng,Shan Li,Guohua Zheng,Zhenpeng Qiu
Excessive fructose consumption exacerbates the progression of nonalcoholic fatty liver disease (NAFLD) by disrupting hepatic lipid homeostasis. This study sought to evaluate the efficacy of urolithin A (UroA) in a fructose-induced NAFLD mouse model. UroA was administered in the high-fructose-fed mice to investigate the antisteatotic effects in vivo. Fructose-stimulated HepG2 cells and primary hepatocytes were established for in vitro mechanistic assessment. The results suggested that UroA ameliorated fructose-induced hepatic steatosis in mice. Mechanistically, UroA impaired lipogenesis and enhanced β-oxidation in the livers of fructose-fed mice. Notably, UroA facilitated hepatic lipophagy through the AMPK/ULK1 pathway both in vivo and in vitro, degrading lipid droplets for fueling β-oxidation. This study indicates that UroA alleviates excessive lipid accumulation and restores lipid homeostasis in the livers of fructose-fed mice by suppressing lipid metabolic reprogramming and triggering lipophagy. Therefore, dietary supplementation of UroA or ellagitannins-rich foods may be beneficial for NAFLD individuals with high fructose intake.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
FOOD CHEMISTRY
·
2023
·
IF 8.8
Xueliang Zhang,Gisele LaPointe,Yang Liu,Xiaomeng Wang,Luyao Xiao,Xiaogan Zhao,Wei Li
In this study, we evaluated the impact of Lactiplantibacillus plantarum ( L. plantarum ) with ropy and non-ropy phenotypes on gel structure and protein conformation of fermented milk. Ropy L. plantarum (T1 & CL80) secreted EPS with high molecular weight (1.41 × 10 6 , 1.19 × 10 6 Da) and intrinsic viscosity (486.46, 316.32 mL/g), effectively enhances fermented milk viscosity and water holding capacity (WHC) (65.4%, 84.6%) by forming a dense gel structure. Non-ropy L. plantarum (CSK & S-1A) fermented milk gel’s high surface hydrophobicity and free sulfhydryl content caused high hardness and low WHC. Raman spectroscopy combined with circular dichroism analysis showed that high levels of α-helix (29.32–30.31%) and random roil (23.06–25.36%) protein structures are the intrinsic factors that contribute to the difference among fermented milk gels of ropy and non-ropy strains. This study provides a basis for understanding the structural variability of fermented milk gels using ropy or non-ropy lactic acid bacteria.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
危险品化学品经营许可证（带存储）