Journal of Cleaner Production
·
2021
·
IF 9.297
Yuchao Shao,Menggang Bao,Weizhong Huo,Rong Ye,Yanqing Liu,Wenjing Lu
Humic substance is vital for soil fertility and has wide applications such as soil remediation agents, organic fertilizer and adsorbents. The results of pH effect on artificial humic acids (AHAs) production demonstrated that acid hydrothermal conditions are favorable for biomass waste dissolution and formation of AHA precursors such as saccharides, furans, organic acids and phenols; whereas alkaline hydrothermal conditions are suitable for AHAs production from these precursors. Enhanced humification from biomass waste with a combined acid - alkaline hydrothermal process was proposed. The solid product known as hydrochar was reduced to only 5 wt% after this process indicating the significant improvement of dissolution and transformation. The AHAs concentration of 28.28 ± 0.98 wt% obtained from corn stalk was the highest yield so far, 10 times higher than ever reported. The carbon flow analysis indicated that the selectivity of AHA-C was 43.2% of the initial carbon in corn stalk. Our study provides a new way of mass production of AHAs in short period, which has great potential for industry application.
✓ 已验证
产品关联
DOI
高影响因子
ELECTROCHIMICA ACTA
·
2021
·
IF 6.901
Youxiong Zhang,Xianhu Wei,Qihui Gu,Jumei Zhang,Yu Ding,Liang Xue,Moutong Chen,Juan Wang,Shi Wu,Xiaojuan Yang,Shuhong Zhang,Tao Lei,Qingping Wu
Robust and efficient multimodal catalysis platforms that possess high catalytic activity and enhanced electrical conductivity are preferred for enhancing the electrical analysis performance under a low overpotential. This report describes a function-switchable amperometric sensor for electrochemical monitoring hydrogen peroxide and glucose under relatively low overpotential based on PEI-functionalized metal–organic framework (P-MOF) supported gold nanoparticles/nitrogen-doped graphene quantum dots (AuNPs/N-GQDs) and glucose oxidase. AuNPs/N-GQDs with high peroxidase mimicking activity was anchored on the P-MOF modified electrode surface as H 2 O 2 sensors, exhibiting a high sensitivity of 134.26 μA mM −1 cm −2 and a detection limit of 3.38 μM. Subsequently, AuNPs/N-GQDs-P-MOF used as a nanocarrier for glucose oxidase (GOx) to achieve “cascade nanoreactor” amplification for glucose detection. The amplified amperometric glucose biosensor showed excellent anti-interference ability, reproducibility, and a limit of detection as low as 0.7 μM (S/N = 3) with high sensitivity of 1512.4 μA mM −1 cm −2 . In addition, the feasibility of the electrochemical biosensor for accurate and quantitative detection of glucose in human serum samples was confirmed with a recovery ranging from 93.2 to 99.3%. The strategy of combining AuNPs/N-GQDs-P-MOF and glucose oxidase for cascade catalysis in this work provides a simple yet efficient approach to prepare nanomaterial-based enzyme-mimics and enzymes hybrids with high performance, which holds great potential in biological and chemical applications of electrochemical devices and biosensing.
✓ 已验证
产品关联
DOI
高影响因子
AICHE JOURNAL
·
2023
·Vol. 69
·期 11
·e18187
·
IF 3.7
Mei-Ling Liu,Lan Hong,Yueming Zhu,Razi Epsztein,Ting Shi,Yuanxia Sun,Zhijun Xu,Shi-Peng Sun,Weihong Xing
Isomer conversion and separation are crucial in the chemical, pharmaceutical, and food industries. However, this process remains challenging due to the reversed conversion of isomers and their similar boiling points and kinetic diameters. Herein, an enzyme-catalyzed nanochannel membrane with a hierarchical structure is fabricated for selective and directional isomeric conversion and separation. The enzyme is embedded in a confined polymer network that shows high stability and retains 95% of its initial activity after 50 reaction cycles. Studying the transport mechanisms between isomers through the membrane shows that the hierarchical layers of the membrane impose unequal energy barriers to the forward and backward transport of products, promoting unidirectional diffusion of products and interrupting the equilibrium of the isomerization reaction to increase the conversion rate by 43%. Overall, this work opens a new avenue for the design of biocatalytic nanochannel membranes and the directional production and in situ separation of isomers.
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF MOLECULAR LIQUIDS
·
2023
·
IF 6
Zhongyuan Sun,Yujiao Xie,Chunjie Wei,Feipeng Wang,Yuan Zhang,Feng Song,Hongyou Cui
Metal chloride aqueous solution is an effective method to promote the conversion of cellulose into 5-hydroxymethylfurfural (HMF). In this work, the influences of sodium chloride (NaCl) and lithium chloride (LiCl) on the conversion of cellulose into HMF in ferric chloride (FeCl 3 ) aqueous solution were investigated. The conversion of glucose and fructose in FeCl 3 –NaCl and FeCl 3 –LiCl aqueous solutions were studied, and the interaction between active species and cellobiose was characterized by UV spectrum and electrospray ion mass spectrometry to explore salt addition on the reaction of cellulose conversion and the active specie. Results showed that the yield of HMF converted from cellulose in FeCl 3 aqueous solution was low, while the yield of HMF was significantly increased when NaCl or LiCl added to the system. In FeCl 3 –NaCl aqueous solutions, the yield of HMF reach a maximum of 40.0% at a concentration of 0.02 M FeCl 3 , and hydrolysis of cellulose was the key step in the conversion of cellulose; In FeCl 3 –LiCl aqueous solutions, the yield of HMF reach a maximum of 36.7% at a concentration of 0.06 M FeCl 3 , and isomerization of glucose was the controlling step. The characterization results illustrated that the addition of NaCl or LiCl changed the active species in FeCl 3 aqueous solutions, and [Fe(OH) 2 ] + and [FeCl 2 (OH) + Li] + were the active species in FeCl 3 –NaCl and FeCl 3 –LiCl aqueous solution for cellulose conversion, respectively.
✓ 已验证
产品关联
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2023
·
IF 15.1
Qian Lin,Jiaqi Huang,Yiling Zhang,Miaomiao Chen,Yuzhi Xu,Xiaoyong Zou,Si-Yang Liu,Zong Dai
Noninvasive glucose detection for diabetes monitoring, in comparison with the conventional finger-prick test that causes inevitable pain, is on demand. Salivary glucose level that possesses a well-established correlation with blood glucose level can be a promising alternative for noninvasive detection, however, the sensitivity and user-friendliness remained to be improved. Herein, an “all-in-one” paper chip was fabricated by one-pot method for sensitive and user-friendly detection of salivary glucose level. Glucose oxidase (GOx) and the chromogenic reagent, luminol, were both in situ encapsulated in a metal–organic framework, ZIF-67, to form the GOx& [email protected] @Paper (G& [email protected] @Paper). Owing to the specificity of GOx and the peroxidase activity of ZIF-67, the paper chips are highly sensitive and specific for glucose with a linear range from 0.2 to 2 mM, and a limit of detection of 0.12 mM (S/N = 3). Moreover, ascribing to the protection and “all-in-one” structure by ZIF-67, the chip is highly stable that maintains the detection performance after storage at room temperature in air for 4 weeks, and this strategy also facilitates the one-pot detection without multiple steps of sampling and incubation. With the assistance of a smartphone application, the glucose level in saliva can be accurately detected with “sample-in-result-out” manner, and the results were highly consistent with those measured by commercial kit. This paper chip is a promising device for daily glucose monitoring, and the highly-integrated strategy provides an innovative resolution for the construction of colorimetric paper chips.
✓ 已验证
产品关联
DOI
高影响因子
ANALYST
·
2021
·Vol. 146
·期 23
·7284-7293
·
IF 4.616
Qiqi Zhu,Yonghua Yuan,Bin Yan,Jing Zhou,Jianli Zuo,Lijuan Bai
Graphdiyne oxide (GDYO) is a novel type of two-dimensional carbon allotrope nanomaterial consisting of a large conjugated system and excellent chemical stability. To date, application of GDYO as a nanozyme in biosensing has been rarely reported. In this study, a novel ultrasensitive colorimetric bioassay was constructed using a hemin/GDYO nanocomposite (H/GDYO) as a new nanozyme with superior peroxidase-like activity for the detection of H2O2 and glucose. It was discovered that H/GDYO exhibited 6-fold higher peroxidase-like activity than pure hemin. Catalytic kinetic analysis showed that H/GDYO had a much higher affinity for H2O2 and glucose than that of hemin. The designed colorimetric bioassay displayed excellent sensitivity for H2O2 and glucose detection with a wide linear range of 0.015–0.5 mM and 0.1–10 mM, respectively, while the limit of detection (LOD) was as low as 4.39 μM and 38 μM, respectively. Moreover, it was successfully applied for the analysis of H2O2 in milk and glucose in real human serum samples with acceptable recoveries. Importantly, the developed colorimetric bioassay shows good agreement with the results obtained from a commercial blood glucose meter. We believe that the proposed method could provide a promising prospect for medical diagnosis and biotechnology.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Micro & Nano Letters
·
2021
·Vol. 17
·期 1
·16-24
·
IF 1.102
Zhenpei Pang,Guidong Lin,Yuheng Wu,Hongmei Li,Yunhao Sun,Hongjun Zhou,Shenggen He
The green synthesis of nano-silver (NS) has gained increasing attention owing to its cost-effectiveness and environmental friendliness. Herein, a novel one-step green preparation method of stable NS aqueous solution using Tollens reagent as the silver ion source, D-fructose as the reduction agent, and polyvinyl pyrrolidone as the stabilizing and capping agent is reported. The prepared NS solution had a pH value of 7.10, with approximately spherical NS particles in the range of 13.95–87.36 nm. The resulting NS solution was stable under normal temperature, boiling water bath, and acidic environment. The NS solution had a remarkable absorption peak at 410 nm in its ultraviolet–visible spectrum. The dynamic light scattering/Zeta analysis showed the average particle size of the NS aqueous solution was 183.5 nm, polymer dispersion index was 0.282, and the zeta potential of the green synthesized NS was –18.0 mV. Moreover, the NS solution exerted a strong inhibitory effect on the growth of the bacteria isolated from the vase water of cut carnation ‘Prince’ flowers. These findings indicate that the obtained NS solution is potentially a practical and effective antibacterial agent for preserving cut carnations and other cut flowers.
✓ 已验证
产品关联
DOI
高影响因子
FOOD SCIENCE AND BIOTECHNOLOGY
·
2023
·
IF 2.9
Yuan Meng,Cao Yu,Zheng Haoyang,Chen Kunlin,Lu Yuping,Wang Jing,Zhu Liqin,Chen Ming,Cai Zhipeng,Shen Yonggen
This study used glucose, fructose, maltose and dextran to explore the effects of different carbohydrates on the Maillard reaction of casein phosphopeptides (CPP). The color parameter results showed that heating time from 1 to 5 h led to brown color, which was consistent with the observed increased in browning intensity. Fourier transform infrared spectroscopy results verified that four carbohydrates reacted with CPP to produce Maillard conjugates. Fluorescence spectroscopy showed that the Maillard reaction changed the tertiary structure of CPP by decreasing the intrinsic fluorescence intensity and surface hydrophobicity compared with the CPP-carbohydrate mixture. At the same time, the Maillard reaction effectively improved the emulsifying properties, reducing power and DPPH radical scavenging activity of CPP. Furthermore, this study also found that glucose and fructose improved CPP more than maltose and dextran. Therefore, monosaccharides have good potential in modifying CPP via the Maillard reaction. Graphical Abstract
✓ 已验证
产品关联
DOI
PubMed
高影响因子
FOOD CHEMISTRY
·
2023
·
IF 8.8
Xiaowei Wang,Kangli Li,Wei Zhao,Leida Zhang,Xuemei Wei,Runpu Shen,Mingyang Chen,Dandan Han,Junbo Gong
Myo-inositol, referred to as vitamin B8, is an essential nutrient for maintaining human physiological functions. However, the morphology of myo-inositol products is predominantly powder or needle shaped, leading to poor food properties. In this work, three edible sugar additives, i.e. d -glucose, l -arabinose and d -fructose, are adopted in the crystallization of myo-inositol to improve its food properties. The results show that these additives change the morphology of myo-inositol crystals. d -glucose and l -arabinose reduced the aspect ratio of myo-inositol crystals, and d -glucose transformed elongated lamellar myo-inositol crystals into diamond-shaped lamellar crystals. The diamond-shaped lamellar myo-inositol products exhibited outstanding functional food properties. It offered a smoother texture and more pleasant mouthfeel when the products were added to infant formulas and nutraceuticals. When they were applied to functional beverages, the dissolution rate was increased by 35 %. This work provides a theoretical guidance for improving food properties through crystallization and possesses considerable potential for industrialization.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
NEW JOURNAL OF CHEMISTRY
·
2023
·Vol. 48
·期 1
·155-161
·
IF 3.3
Li Xu,Yi Qian,Lei Bao,Wei Wang,Nengmei Deng,Li Zhang,Guanglin Wang,Xucheng Fu,Wei Fu
The low quantum yields (QY) of carbon quantum dots (CQDs) not only limit their sensitivity as sensors, but also hinder their application in fluorescent anti-counterfeiting materials. To develop highly fluorescent CQDs, several factors, like a large conjugated double bond system, a rigid plane structure and electron-donating substituent group incorporation on the aromatic ring need to be considered. With this in mind, herein, highly fluorescent nitrogen-doped CQDs (N-CQDs) were successfully fabricated by a solvothermal method using ammonia, citric acid and phloroglucinol as precursors. The sensing platform based on the obtained N-CQDs was constructed to determine Fe3+ and ascorbic acid (AA) via the “on–off–on” fluorescence principle. The fluorescence of the N-CQDs was effectively quenched upon addition of Fe3+, and then, restored by AA. The detection limits for Fe3+ and AA were determined to be 0.28 μM and 0.81 μM within the respective ranges of 1–10 μM and 30–90 μM. It is worth noting that the proposed strategy was successfully applied to monitor AA in fruit samples with satisfactory results. In addition, we successfully applied N-CQDs to information anti-counterfeiting and molecular logic gate operations, which confirmed their great potential application prospects.
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY
·
2023
·
IF 6.1
Jun-Ling Deng,Meng-Jie Tang,Xiao-Xia Su,Yu-Tong Ye,Jie-Ying Wei,Zhong-Xiu Chen,Yu-Mei Qin
The subjective measurement of the dynamic perception of sweetness is a problem in food science. Herein, the rapid interactions of sugars and sugar alcohols with sweet taste receptors on living cells on a millisecond timescale were studied via stopped-flow fluorescence spectroscopy. According to the rapid-kinetic parameters, sweeteners were divided into two groups. Sweeteners in group I disrupted the hydrogen bond network structure of water, and the apparent rate constant (kobs) was in the range of 0.45–0.6 s–1. Sweeteners in group II promoted the hydrogen bond formation of water, and the kobs was mostly in the range of 0.6–0.75 s–1. For most sweeteners, the kobs of cell responses was negatively correlated with the apparent specific volume of sweeteners. The differences in the cellular responses may be attributed to the disturbance in the water structure. Experimental results showed that the kinetic parameters of sweet cell responses reflected the dynamic perception of sweetness. Rapid kinetics, solution thermodynamic analysis, and water structure analysis enriched the physicochemical study of the sweetness mechanism and can be used to objectively evaluate the dynamic perception of sweetness.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
FUEL
·
2023
·
IF 7.4
Zhenqi Sun,Jialin Tan,Guangping Zhou,Hao Huang,Shaoqu Xie
Using fermentation-based alcohol fuel as a substitute for fossil fuels is one of the means to alleviate the oil crisis and exhaust emissions. However, the low fermentation titer and the formation of azeotropes pose challenges to the separation process. In this paper, sugaring-out was proposed to separate a biofuel, namely isobutanol, as sugars are milder than salts and can be used as the fermentation media. The decrease in the water content is a linear function of the initial sugar concentration so that the isobutanol + water azeotrope was broken. The recovery of isobutanol in the 60 wt% isobutanol system using sucrose, glucose, and fructose reached 96.57 %, 97.01 %, and 97.98 %, respectively. After a two-step surgating-out + salting-out process, the isobutanol was purified to 99.82 wt%. The sugaring-out effects of different sugars were quantized by fitting the natural logarithm of isobutanol solubility with sugar molality in the aqueous phase. Due to the different number of hydroxyl groups in the sugar's structure, the order of the sugaring-out effect is glucose ≈ fructose > sucrose. This article provides detailed data on the sugaring-out separation of the concentrated biobutanol systems, which has a guiding role for the use of sugaring-out effect to separate other biofuels from fermentation broth.
✓ 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）