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N-Bromosuccinimide-Promoted Direct Phosphorylation of Amines with P(O)—H Compounds 认领 引用
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作者 Li Qiaoli Wang Huabin +6 位作者 Qin Yan Zhao Jiamin Han Fang Liu Xiongwei Pan Bowen Huang Qiang Zhou Ying 《有机化学》 SCIE CAS CSCD 北大核心 2026年第3期1060-1069,共10页
A mild,green,high atom economic,convenient and scalable N-bromosuccinimide(NBS)promoted direct phosphorylation strategy of secondary phosphine oxides and amines has been developed for the synthesis of various valuable... A mild,green,high atom economic,convenient and scalable N-bromosuccinimide(NBS)promoted direct phosphorylation strategy of secondary phosphine oxides and amines has been developed for the synthesis of various valuable phosphamide compounds.A variety of substrates were well-tolerated and afforded the desirable compounds in moderate to excellent yields(up to 93%).This reaction proceeds smoothly at room temperature under air atmosphere,without the need for metal catalysts,bases,or high temperature,thus providing a new strategy for the synthesis of phosphamide derivatives. 展开更多
关键词 phosphorylation P(O)—N bond phosphamide compounds amines N-bromosuccinimide(NBS)
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PⅢ/PⅤ-catalytic platform enabling N-fluoro-thiocarbonylation of diaryl amines for modular synthesis of tertiary N-trifluoromethylamines 认领 引用
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作者 Dongke Zhang Li-Ao Ding +2 位作者 Qiuyu Xiang Zhuojun Li Qian Wu 《Chinese Chemical Letters》 SCIE CAS CSCD 2026年第5期289-294,共6页
Tertiary N–CF3 compounds have attracted intensive attention due to their great significance in discovery of new lead compounds,however,the synthesis of tertiary diaryl N–CF3 derivatives is still challenging.He... Tertiary N–CF3 compounds have attracted intensive attention due to their great significance in discovery of new lead compounds,however,the synthesis of tertiary diaryl N–CF3 derivatives is still challenging.Herein,we successfully edit diaryl N–H into thiocarbamoyl fluorides with trifluoromethanesulfonyl chloride by use of a PⅢ/PⅤ redox catalyst,leading to the formation of series of diaryl N–CF3 with silver fluoride.In addition,this process is also highly efficient to dialkyl and alkylaryl secondary amines.The mechanism investigation illustrated that the use of hydrosilane is crucial to the success of this transformation.It acts as both terminal reductants to cycle the PⅢ/PⅤ couple and fluoride acceptor to promote the reaction between less reactive amine and thiocarbonyl difluoride intermediate. 展开更多
关键词 N-Trifluoromethylation Thiocarbamoyl fluoride Silane Phosphorus catalysis Diaryl amine
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γ-C(sp3)-H acylation of aliphatic amines enabled by cooperative photoredox NHC/Pd catalysis 认领 引用
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作者 Xin-Han Wang Ying Huang +1 位作者 Chun-Lin Zhang Song Ye 《Chinese Chemical Letters》 SCIE CAS CSCD 2026年第5期295-300,共6页
The site-selective C(sp3)-H functionalization is of great importance in synthetic chemistry.However,γ-amino C(sp3)-H functionalization of aliphatic amines remains challenging.Herein,we develop an efficientγ-C(... The site-selective C(sp3)-H functionalization is of great importance in synthetic chemistry.However,γ-amino C(sp3)-H functionalization of aliphatic amines remains challenging.Herein,we develop an efficientγ-C(sp3)-H acylation of aliphatic amines by cooperative photoredox NHC/Pd catalysis.The process entails the following key steps:(i)photoinduced palladium-promoted formation of aryl radical,(ii)generation of transientγ-amino alkyl radical through aryl radical-mediated 1,7-HAT,(iii)single-electron oxidation of Breslow enolate intermediate to persistent ketyl radical,and(iv)radicaladical coupling ofγ-amino alkyl radical with ketyl radical.The synthetic utility of thisγ-amino C(sp3)-H acylation is illustrated by the conversion of readily available aliphatic amines to a diverse collection ofγ-aminoketones,which serve as versatile building blocks to enable the synthesis of pyrrolines of interest in medicinal chemistry.The radical mechanism is supported by the results of various control experiments,in situ EPR analysis,radical trapping experiment,and isotopic labeling studies. 展开更多
关键词 N-Heterocyclic carbene Palladium Cooperative catalysis C(sp³)-H acylation Aliphatic amine
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Techno-economic optimization of CO2capture process integrated with VLE-driven thermodynamic modeling in AMP blended(MEA,DEA,MDEA,PZ)amines 认领 引用
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作者 Min-Kyeong Oh Jin-Young Cha +9 位作者 Kyu Hyung Lee Myoungil Kim Sangwon Seo Seong-Yun Bae Eun-Uk Yu Min-Seo Yun Ankit Belbase Shaukat Ali Mazari Sang-Jun Han Jong-Ho Moon 《Journal of Energy Chemistry》 SCIE EI CAS CSCD 2026年第4期226-247,I0007,共22页
This study investigates and compares the performance of CO2capture processes using various aqueous 2-amino-2-methyl-1-propanol(AMP)blended amine solutions,including MEA/AMP,DEA/AMP,MDEA/AMP,and PZ/AMP.Vapor-liquid ... This study investigates and compares the performance of CO2capture processes using various aqueous 2-amino-2-methyl-1-propanol(AMP)blended amine solutions,including MEA/AMP,DEA/AMP,MDEA/AMP,and PZ/AMP.Vapor-liquid equilibrium(VLE)experimental data,particularly CO2solubility,for each solvent were obtained from experiments and literature and applied to the electrolyte non-random two-liquid(E-NRTL)model in Aspen Plus.Electrolyte-molecule interaction parameters were regressed using MATLAB and incorporated into the Aspen Plus parameter set.Cyclic CO2loading capacity and heat of absorption were evaluated for each system.The CO2capture process,including CO2compression,was simulated based on the regressed parameters.Reboiler duty(Qreb)and total equivalent work(Weq)were assessed through process simulation.A techno-economic analysis(TEA)was conducted to estimate the CO2capture cost.Sensitivity analyses were performed to identify influential variables,applying both local sensitivity analysis and global sensitivity analysis,with a focus on key performance indicators(KPIs),such as CO2capture rate,Weq,and capture cost.The sensitivity analysis revealed that the cost-optimal stripper pressure of each blended system was in the range of 120-160 kPa.Process optimization was carried out to minimize capture cost by simultaneously adjusting the decision variables for the 3-pathway:CO2capture rates,blending ratios,and plant scale.Finally,the optimized stripper pressure was shifted to the range of 150-190 kPa in all blended systems.The lowest capture cost of$57.7CO2was observed for the PZ/AMP(5:40 wt%)system at a 90%CO2capture rate.At the 10 MW(pilot)scale,the optimized capture cost was approximately 30%-40%higher than that at the 100 MW(demonstration)scale. 展开更多
关键词 CO2capture 2-Amino-2-methyl-1-propanol(AMP) Blended amine Thermodynamic modeling Total equivalent work Cost optimization Coal-fired power plant
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A dicationic nickel complex-catalyzed asymmetric synthesis of chiral benzylic amines:Evolution from reductive amination to borrowing hydrogen reaction 认领 引用
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作者 Xiuhua Wang Jianrong Steve Zhou 《Chinese Chemical Letters》 SCIE CAS CSCD 2026年第2期386-391,共6页
Chiral benzylic amines are important motifs in medicines.A dicationic nickel complex of chiral diphosphine(R)-Ph-BPE promotes highly enantioselective reductive amination of aryl alkyl ketones with arylamines using iso... Chiral benzylic amines are important motifs in medicines.A dicationic nickel complex of chiral diphosphine(R)-Ph-BPE promotes highly enantioselective reductive amination of aryl alkyl ketones with arylamines using isopropanol as hydrogen source.The reaction is easily scaled up in a gram-scale synthesis using 1 mol% nickel catalyst and it is applied to an asymmetric synthesis of(S)-rivastigmine.Building on this success,we achieved rare examples of asymmetric hydrogen borrowing reactions with arylamines using an Earth-abundant 3d metal,nickel. 展开更多
关键词 Borrowing hydrogen reaction Benzylic amine Nickel catalysis Reductive amination Transfer hydrogenation Dehydrogenation
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Chiroptical sensing for remote chiral amines via a C-H activation reaction 认领 引用
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作者 Xin Li Jia-Min Lu +3 位作者 Bo Li Chen Zhao Bei-Bei Yang Li Li 《Chinese Chemical Letters》 SCIE CAS CSCD 2025年第5期265-270,共6页
An electronic circular dichroism(ECD)-based chiroptical sensing method has been developed forβ-andγ-chiral primary amines via a C-H activation reaction.With the addition of Pd(OAc)2,the flexible remote chiral pri... An electronic circular dichroism(ECD)-based chiroptical sensing method has been developed forβ-andγ-chiral primary amines via a C-H activation reaction.With the addition of Pd(OAc)2,the flexible remote chiral primary amine fragment in the bidentate ligand intermediate was fixed to form a cyclopalladium complex,producing an intense ECD response.The correlation between the sign of Cotton effects and the absolute configuration of substrates was proposed,together with theoretical verification using timedependent density functional theory(TDDFT).Chiroptical sensing of an important drug raw material was performed to provide rapid and accurate information on the absolute optical purity.This work introduces an alternative perspective of C-H activation reaction as well as a feasible chiroptical sensing method of remote chiral amines. 展开更多
关键词 Electronic circular dichroism(ECD) Remote chiral amines C-H activation Cyclo-palladium Absolute optical purity
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Nickel-catalyzed C(sp2)–H alkynylation of free α-substituted benzylamines using a transient directing group 认领 引用 被引量：2
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作者 Xinghao Cai Chen Ma +5 位作者 Ying Kang Yuqiang Ren Xue Meng Wei Lu Shiming Fan Shouxin Liu 《Chinese Chemical Letters》 SCIE CAS CSCD 2025年第10期260-264,共5页
A nickel-catalyzed C(sp2)–H alkynylation of unprotected α-substituted benzylamines is achieved by utilizing a transient directing group. The combination of a TDG with a nickel catalyst significantly improves the ... A nickel-catalyzed C(sp2)–H alkynylation of unprotected α-substituted benzylamines is achieved by utilizing a transient directing group. The combination of a TDG with a nickel catalyst significantly improves the reaction step and atom economy. It has been investigated that the 2,4,6-trimethylpyridine ligand was critical to achieve the optimized reactivity. This protocol provides a straightforward route for synthesizing the alkynylated free benzylamines, featuring good substrate compatibility and monoselectivity. 展开更多
关键词 C-H activation Nickel Transient directing group Amines Alkynylation
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Effect of sterically hindered amines on the cycling capacity of biphasic absorbents for industrial CO2 capture 认领 引用 被引量：1
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作者 Zanbu Geng Le Fu +5 位作者 Yang Yang YixiWang Wenqing Xu Runlong Hao Daoping Zhan Tingyu Zhu 《Journal of Environmental Sciences》 SCIE EI CAS CSCD 2025年第11期501-510,共10页
The biphasic solvent is a promising solution to reduce regeneration energy consumption in CO2 capture.However,most current biphasic solvents suffer from high viscosity and poor desorption of the rich phase.To the i... The biphasic solvent is a promising solution to reduce regeneration energy consumption in CO2 capture.However,most current biphasic solvents suffer from high viscosity and poor desorption of the rich phase.To the issues,a novel pentamethyldiethylenetriamine(PMDETA)-2-amino-2-methyl-1-propanol(AMP)/diethylenetriamine(DETA)-sulfolane biphasic solvent was developed.The mechanism of AMP affecting CO2 recycling capacity was analyzed.By adjusting the ratio of AMP and DETA,the absorption and desorption performance were balanced,and the recycling capacity and renewable energy consumption of the absorbent were improved.For the P2.4A0.8D0.8S2 biphasic solvent,the CO2 loading of the rich phase was 5.87 mol/L,and the proportion of the rich phase volume ratio was 35%,which surpasses most reported biphasic solvents.The viscosity of the absorbent significantly decreased from 527.00 mPa·s to 92.26 mPa·s,attributed to the beneficial effect of AMP.Thermodynamic analysis showed that the biphasic solvent produced a lower regeneration energy consumption of 1.70 GJ CO2,which was 57%lower than that of monoethanolamine(MEA).Overall,the PMDETA-AMP/DETA-sulfolane biphasic solvent exhibited cycle capacity,which provided new insights for the designing of biphasic solvent. 展开更多
关键词 CO2capture Biphasic absorbent Absorption Amines Viscosity
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No More Explosive Transformation of Aromatic Amines:Chemistry Solves a 140-year Dilemma to Find a Safe Way Out 认领 引用
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作者 YAN Fusheng 《Bulletin of the Chinese Academy of Sciences》 2025年第4期220-226,共7页
Sometimes chemistry doesn’t just make new molecules-it overturns old assumptions.For 140 years,drugmakers have accepted that transforming aromatic amines-a very important reaction for building drug molecules-means li... Sometimes chemistry doesn’t just make new molecules-it overturns old assumptions.For 140 years,drugmakers have accepted that transforming aromatic amines-a very important reaction for building drug molecules-means living with explosive risks.The danger was considered unavoidable,the tradeoff permanent-until a team in Hangzhou proved otherwise. 展开更多
关键词 aromaticamines chemistry Hangzhou team drug molecules transforming aromatic amines drug molecules means explosive transformation safe way
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Toward scalable production of biobased N-substituted furfurylamines by engineered imine reductases 认领 引用
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作者 Jian-Peng Wang Guang-Hui Lu +2 位作者 Qian Wu Jian-Rong Dai Ning Li 《Chinese Journal of Catalysis》 SCIE EI CAS CSCD 2025年第9期210-220,共11页
N-substituted furfurylamines(FAs)are valuable precursors for producing pharmacologically active compounds and polymers.However,enzymatic synthesis of the type of chemicals is still in its infancy.Here we report an imi... N-substituted furfurylamines(FAs)are valuable precursors for producing pharmacologically active compounds and polymers.However,enzymatic synthesis of the type of chemicals is still in its infancy.Here we report an imine reductase from Streptomyces albidoflavus(SaIRED)for the reductive amination of biobased furans.A simple,fast and interference-resistant high-throughput screening(HTS)method was developed,based on the coloration reaction of carbonyl compounds with 2,4-dinitrophenylhydrazine.The reductive amination activity of IREDs can be directly indicated by a colorimetric assay.With the reductive amination of furfural with allylamine as the model reaction,SaIRED with the activity of 4.8 U mg-1 was subjected to three rounds of protein engineering and screening by this HTS method,affording a high-activity tri-variant I127V/D241A/A242T(named M3,20.2 U mg-1).The variant M3 showed broad substrate scope,and enabled efficient reductive amination of biobased furans with a variety of amines including small aliphatic amines and sterically hindered amines,giving the target FAs in yields up to>99%.In addition,other variants were identified for preparative-scale synthesis of commercially interesting amines such as N-2-(methylsulfonyl)ethyl-FA by the screen method,with isolated yields up to 87%and turnover numbers up to 9700 for enzyme.Gram-scale synthesis of N-allyl-FA,a valuable building block and potential polymer monomer,was implemented at 0.25 mol L-1 substrate loading by a whole-cell catalyst incorporating variant M3,with 4.7 g L-1 h-1 space-time yield and 91%isolated yield. 展开更多
关键词 N-substituted furfurylamines Imine reductases Reductive amination High-throughput screening Protein engineering
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Ionic liquid based dispersive liquid-liquid microextraction of aromatic amines in water samples 认领 引用 被引量：16
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作者 Yun Chang Fan Zheng Liang Hu +2 位作者 Mei Lan Chen Chao Shen Tu Yan Zhu 《Chinese Chemical Letters》 SCIE CAS 2008年第8期985-987,共3页
In this work, a new microextraction method termed ionic liquid based dispersive liquid-liquid microextraction （IL-DLLME） was demonstrated for the extraction of 2-methylaniline, 4-chloroaniline, 1-naphthylamine and 4... In this work, a new microextraction method termed ionic liquid based dispersive liquid-liquid microextraction （IL-DLLME） was demonstrated for the extraction of 2-methylaniline, 4-chloroaniline, 1-naphthylamine and 4-aminobiphenyl in aqueous matrices. After extraction the ionic liquid （IL） phase was injected directly into the high performance liquid chromatography （HPLC） system for determination. Some parameters that might affect the extraction efficiency were optimized. Under the optimum conditions, good linear relationship, sensitivity and reproducibility were obtained. The limits of detection （LOD, S/N = 3） for the four analytes were in the range of 0.45-2.6 μg L^-1. The relative standard deviations （R.S.D., n = 6） were in the range of 6.2-9.8%. This method was applied for the analysis of the real water samples. The recoveries ranged from 93.4 to 106.4%. The main advantages of the method are high speed, high recovery, good repeatability and volatile organic solvent-free. 展开更多
关键词 Ionic liquid （IL） Dispersive liquid-liquid microextraction （DLLME） High performance liquid chromatography （HPLC） Aromatic amines
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Dynamics simulation of tertiary amines adsorbing on kaolinite(001) plane 认领 引用 被引量：6
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作者 刘长淼 冯安生 +2 位作者 郭珍旭 曹学锋 胡岳华 《Transactions of Nonferrous Metals Society of China》 SCIE EI CAS CSCD 2011年第8期1874-1879,共6页
The collecting power of tertiary amines（DRN,DEN and DPN） on kaolinite follows the order of DENDPNDRN.After reacting with DRN,DEN and DPN,the surface potentials of kaolinite increase remarkably,and the recruitments c... The collecting power of tertiary amines（DRN,DEN and DPN） on kaolinite follows the order of DENDPNDRN.After reacting with DRN,DEN and DPN,the surface potentials of kaolinite increase remarkably,and the recruitments caused by collectors also follow the order of DENDPNDRN.The results of dynamics simulation show that the geometries of substituent groups bonding to N are deflected and twisted,and some of bond angles are changed when tertiary amines cations adsorb on kaolinite（001） surface.Based on the results of dynamics simulations and quantum chemistry calculations,the electrostatic forces between three tertiary amines cations and 4×4×3（001） plane of kaolinite are 1.38×10？7 N（DRN12H＋）,1.44×10-6 N（DEN12H＋）,1.383×10-6 N（DPN12H＋）,respectively. 展开更多
关键词 tertiary amines kaolinite （001） plane dynamics simulation electrostatic force
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The role of flavonoids in mitigating food originated heterocyclic aromatic amines that concerns human wellness 认领 引用 被引量：5
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作者 Hui Teng Hongting Deng +3 位作者 Chang Zhang Hui Cao Qun Huang Lei Chen 《Food Science and Human Wellness》 SCIE CAS CSCD 2023年第4期975-985,共11页
Meat products are an important part in our daily diet,providing valuable nutrients for the human body.However,heating processes cause the meat to become more appetizing with changes in texture,appearance,flavor,and ch... Meat products are an important part in our daily diet,providing valuable nutrients for the human body.However,heating processes cause the meat to become more appetizing with changes in texture,appearance,flavor,and chemical properties by the altering of protein structure and other ingredients.As one kind of cooking-induced contaminants,heterocyclic aromatic amines(HAAs)are widely present in protein aceous food products with strong carcinogenic and mutagenic properties.In order to promote the safety of traditional meat products,this review focused on the formation,metabolism,biological monitoring and inhibitory mechanism of HAA.An overview of the formation pathways,hazards,and control methods of HAAs during food processing in recent years was studied,aiming to provide some valuable information for exploring effective methods to inhibit the production of associated hazards during food processing.Systematic selection of different types of flavonoids to explore their effects on the formation of HAAs in an actual barbecue system can provide theoretical reference for effectively controlling the formation of HAAs and reducing their harm to human health. 展开更多
关键词 Heterocyclic aromatic amines Flavonoids Hazardous control Precursors
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Predicting the Acute Toxicity of Aromatic Amines by Linear and Nonlinear Regression Methods 认领 引用 被引量：6
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作者 张晓龙 周志祥 +3 位作者 刘阳华 范雪兰 李捍东 王建涛 《Chinese Journal of Structural Chemistry》 SCIE CAS CSCD 2014年第2期244-252,共9页
In current paper, a quantitative structure-activity relationship （QSAR） study was performed for the prediction of acute toxicity of aromatic amines. A set of 56 compounds was randomly divided into a training set of ... In current paper, a quantitative structure-activity relationship （QSAR） study was performed for the prediction of acute toxicity of aromatic amines. A set of 56 compounds was randomly divided into a training set of 46 compounds and a test set of 10 compounds. The electronic and topological descriptors computed by the Scigress package and Dragon software were used as predictor variables. Multiple linear regression （MLR） and support vector machine （SVM） were utilized to build the linear and nonlinear QSAR models, respectively. The obtained models with five descriptors show strong predictive ability. The linear model fits the training set with R2 = 0.71, with higher SVM values of R2 = 0.77. The validation results obtained from the test set indicate that the SVM model is comparable or superior to that obtained by MLR, both in terms of prediction ability and robustness. 展开更多
关键词 aromatic amines acute toxicity quantitative structure-activity relationship（QSAR） support vector machine （SVM） multiple linear regression （MLR）
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Sono-photocatalytic amination of quinoxalin-2(1H)-ones with aliphatic amines 认领 引用 被引量：3
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作者 Wen-Tao Ouyang Jun Jiang +5 位作者 Yan-Fang Jiang Ting Li Yuan-Yuan Liu Hong-Tao Ji Li-Juan Ou Wei-Min He 《Chinese Chemical Letters》 SCIE CAS CSCD 2024年第10期269-272,共4页
The first example of sono-photocatalytic bond formation was reported.With both visible light and ultrasound wave as the energy,various 3-aminoquinoxalin-2(1H)-ones were efficiently obtained with good functional group ... The first example of sono-photocatalytic bond formation was reported.With both visible light and ultrasound wave as the energy,various 3-aminoquinoxalin-2(1H)-ones were efficiently obtained with good functional group tolerance in the absence of any additive or external photocatalyst.Compared with the conventional photocatalysis,sono-photocatalysis not only dramatically improved the reaction rates and yields,but also reduced energy consumption. 展开更多
关键词 Sono-photocatalysis External photocatalyst-free Quinoxalin-2(1H)-ones Amination Aliphatic amines
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Evolution of free amino acids, biogenic amines and volatile compounds in fermented sausages inoculated with Lactiplantibacillus plantarum and Staphylococcus simulans 认领 引用 被引量：3
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作者 Xuefei Shao Huhu Wang +3 位作者 Xiangyu Song Mingyuan Huang Jian Sun Xinglian Xu 《Food Science and Human Wellness》 SCIE CAS CSCD 2024年第6期3642-3651,共10页
Lactic acid bacteria and coagulase-negative staphylococci play an important role in the production of fermented sausages,such as inhibiting the growth of undesirable bacteria and antioxidant.In this study,the effects ... Lactic acid bacteria and coagulase-negative staphylococci play an important role in the production of fermented sausages,such as inhibiting the growth of undesirable bacteria and antioxidant.In this study,the effects of inoculation with different starter cultures(Lactiplantibacillus plantarum HN108 and Staphylococcus simulans NJ209)on the free amino acids(FAAs),biogenic amines(BAs)and volatile compounds of fermented sausages were investigated using an amino acid analyzer,ultra performance liquid chromatography and gas chromatography-ion mobility spectrometry,respectively.The pH and carbonyl content of the inoculated group was significantly lower than those in the control group(P<0.05).L.plantarum HN108 significantly reduced the content of FAAs and BAs in fermented sausage production(P<0.05),while S.simulans NJ209 promoted the formation of FAAs(especially bitter amino acids)and exhibited slight BAs-reducing activity.In addition,L.plantarum HN108 promoted the formation of volatile compounds such as ketones,alcohols and alkenes in sausages.In conclusion,L.plantarum HN108 could contribute to reducing the content of putrescine and tyramine and forming the desirable flavor compounds in fermented sausages.Thus,L.plantarum HN108 is expected to be a starter culture that can improve the safety and flavor of fermented sausages. 展开更多
关键词 Fermented sausages Starter cultures Free amino acids Biogenic amines Volatile compounds
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Small-molecule amines:a big role in the regulation of bone homeostasis 认领 引用 被引量：3
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作者 Qian Zhang Jirong Yang +5 位作者 Nan Hu Juan Liu Huan Yu Haobo Pan Di Chen Changshun Ruan 《Bone Research》 SCIE CAS CSCD 2023年第3期457-480,共24页
Numerous small-molecule amines(SMAs)play critical roles in maintaining bone homeostasis and promoting bone regeneration regardless of whether they are applied as drugs or biomaterials.On the one hand,SMAs promote bone... Numerous small-molecule amines(SMAs)play critical roles in maintaining bone homeostasis and promoting bone regeneration regardless of whether they are applied as drugs or biomaterials.On the one hand,SMAs promote bone formation or inhibit bone resorption through the regulation of key molecular signaling pathways in osteoblasts/osteoclasts;on the other hand,owing to their alkaline properties as well as their antioxidant and anti-inflammatory features,most SMAs create a favorable microenvironment for bone homeostasis.However,due to a lack of information on their structure/bioactivity and underlying mechanisms of action,certain SMAs cannot be developed into drugs or biomaterials for bone disease treatment.In this review,we thoroughly summarize the current understanding of SMA effects on bone homeostasis,including descriptions of their classifications,biochemical features,recent research advances in bone biology and related regulatory mechanisms in bone regeneration.In addition,we discuss the challenges and prospects of SMA translational research. 展开更多
关键词 amines biomaterials alkaline
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Flotation behavior of four dodecyl tertiary amines as collectors of diaspore and kaolinite 认领 引用 被引量：9
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作者 Changmiao Liu Feng Ansheng +2 位作者 Guo Zhenxu Cao Xuefeng Hu Yuehu 《Mining Science and Technology》 2011年第2期249-253,共5页
The flotation of diaspore and kaolinite by one of a series of tertiary amines（DRN,DEN,DPN and DBN） was investigated.The tertiary amines show better floating recovery for kaolinite compared to diaspore.The maximum re... The flotation of diaspore and kaolinite by one of a series of tertiary amines（DRN,DEN,DPN and DBN） was investigated.The tertiary amines show better floating recovery for kaolinite compared to diaspore.The maximum recovery D-value is 45%over a pH range from 3 to 8.FT-IR spectra confirm the presence of hydroxyl groups on the surface of kaolinite and diaspore.Zeta potential measurements show that the mineral surfaces are negatively charged over a wide pH range.Ionization of hydroxyl groups mainly accounts for the surface charging mechanism.The adsorption of tertiary amines onto the mineral surface is due mainly to electrostatic effects and the difference in electrostatic effect between a collector and the two minerals can explain the flotation separation.Inductive electronic and steric effects from the substituent groups result in different collecting powers for the four tertiary amines. 展开更多
关键词 Kaolinite Diaspore Amines collectors Froth flotation
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Effects of potassium lactate on sensory attributes,bacterial community succession and biogenic amines formation in Rugao ham 认领 引用 被引量：3
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作者 Renyong Liao Ying Wang +4 位作者 Qiang Xia Changyu Zhou Fang Geng Daodong Pan Jinxuan Cao 《Food Science and Human Wellness》 SCIE CAS CSCD 2024年第1期198-210,共13页
To deepen the understanding in the effect of potassium lactate on the sensory quality and safety of Rugao ham,sensory attributes,physicochemical parameters,total volatile basic nitrogen(TVBN),microorganism community a... To deepen the understanding in the effect of potassium lactate on the sensory quality and safety of Rugao ham,sensory attributes,physicochemical parameters,total volatile basic nitrogen(TVBN),microorganism community and biogenic amines of Rugao ham manufactured with different potassium lactate levels(0%,0.5%,1%,2%)were investigated;the relationship between microbial community and the formation of TVBN and biogenic amines was further evaluated.With the increase of potassium lactate from 0%to 2%,the increased sensory scores and the decreased total aerobic bacterial count and TVBN were observed;the abundance of Staphylococcus increased,while the content of Halomonas decreased.LDA effect size(LEf Se)and correlations analysis showed that Staphylococcus equorum and Lactobacillus fermentum could be the key species to improve sensory scores and decrease biogenic amines and TVBN.Metabolic pathway analysis further showed that amino acids metabolism and nitrogen metabolism were mainly involved in decreasing TVBN and biogenic amines in the treatment of 2%potassium lactate. 展开更多
关键词 Rugao ham Potassium lactate Biogenic amines Microbial community Metabolic pathways
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Fluorescent probes for the detection of biogenic amines,nitrite and sulfite in food:Progress,challenges and perspective 认领 引用 被引量：4
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作者 Jin Zhang Chenyang Yue +2 位作者 Yingjun Ke Hemi Qu Lintao Zeng 《Advanced Agrochem》 CAS 2023年第2期127-141,共15页
Foodborne contaminants such as biogenic amines(BAs),nitrite and sulfite are harmful to human health.To safeguard food safety,the content of BAs,nitrite and sulfite should be strictly controlled.Small-molecule fluoresc... Foodborne contaminants such as biogenic amines(BAs),nitrite and sulfite are harmful to human health.To safeguard food safety,the content of BAs,nitrite and sulfite should be strictly controlled.Small-molecule fluorescent probes are a promising analytical tool for monitoring BAs,nitrite and sulfite because they are highly sensitive and selective,offer simplicity of operation,and can enable optical signal visualization of the analyte.In this review,we summarize the most recent progress on the development of fluorescent probes for selectively detecting BAs,nitrite,and sulfite.In particular,we discuss the working mechanisms,sensing performance,and practical applications of various fluorescent probes that have been developed in recent years for detecting BAs,nitrite,and sulfite,with a particular emphasis on the utilization of these probes in food.Lastly,we discuss the research directions,trends,and prospects of molecular fluorescent probes in food applications in the future.We hope this review can offer conceptual and design guidance for researchers and practitioners to develop novel fluorescent probes for food safety. 展开更多
关键词 Fluorescent probe Biogenic amines Nitrite Sulfite Food safety
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