JOURNAL OF FOOD SCIENCE
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2023
·Vol. 88
·期 4
·1392-1408
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IF 3.9
Hangxin Zhu,Hongyan Yang,Xianyu Zhou,Huan Li,Ruiqi Feng,Fang Yuan,Siyi Pan,Xiaoyun Xu
Volatile compounds in wine have a critical impact on the consumers’ senses. In this study, the effect of diammonium phosphate (DAP) and glutamine on sulfur-containing volatiles and sensory properties of Chardonnay wine fermented with Saccharomyces cerevisiae yeast were evaluated. Fermentation kinetics was determined by monitoring reducing sugar consumption rates during fermentation. The volatile profile of wines was analyzed by headspace solid phase microextraction (HS-SPME) coupled with gas-chromatography-mass spectrometry (GC-MS). The volatile sulfur compounds (VSCs) were analyzed by HS-SPME-GC-MS/MS. Flavor attributes of wines were assessed by a sensory panel with quantitative descriptive analysis. A total of 53 volatiles, including 6 VSCs, were identified and quantified in the Chardonnay wine. The results suggested that glutamine supplementation at the beginning of fermentation could help to initiate fermentation earlier and promote the formation of isoamyl acetate, phenethyl acetate, ethyl nonanoate, methyl decanoate, diethyl succinate and phenethyl alcohol, isobutanol, while DAP supplementation had no obvious effect on the volatile composition of the resulting wine and fermentation kinetics. Practical Application Suitable nitrogen source is helpful to a healthy fermentation, and can also prevent the off-flavor and regulate aroma profile of wine. This study provides insights on the volatile and sensory characteristics of Chardonnay wines affected by different nitrogen source addition.
研究领域:
食品科学
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发酵工程
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感官科学
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产品关联
DOI
PubMed
高影响因子
VACUUM
·
2021
·
IF 3.627
Hua Fang,Xueyong Guo,Wei Wang,Jianxin Nie,Kehua Han,Chengcheng Wu,Shuji Wang,Di Wang,Peng Deng
The application of nano-catalytic materials in molecular perovskite energetic materials is of great significance to promote the development of molecular perovskite energetic materials in explosive formulations and propellants. In this paper, the thermal catalytic effects of CoFe-layered double hydroxide derivative on the molecular perovskite energetic material (DAP-4) were studied. In this study, we successfully prepared a new type of CoFe-based photothermal agent (CoFe-500) by heating CoFe layered double hydroxide nanosheets in an Ar atmosphere at 500 °C. And the micromorphology, structure composition , thermal decomposition performances of CoFe-500 and DAP-4/CoFe-500 composite were characterized. The experimental results showed that with the addition of CoFe-500, the initial decomposition temperature and peak exothermic temperature of DAP-4 showed a decreasing trend. With 10 wt% CoFe-500 added, the initial decomposition temperature and peak exothermic temperature of DAP-4 decreased from 305.6 °C to 166.3 °C and 379.0 °C–322.5 °C, respectively (10 °C/min heating rate). The apparent activation energy ( E a ) of pure DAP-4 is 172.27 kJ/mol and 175.13 kJ/mol calculated by the Kissinger and Ozawa method, respectively. And with 10 wt% CoFe-500 added, the E a is reduced to 119.11 kJ/mol and 122.84 kJ/mol, respectively. The possible thermal catalytic decomposition mechanism of DAP-4/CoFe-500 composites was proposed from the thermal analysis and mass spectrometry test results. This work is meaningful to further understand the decomposition performances of DAP-4 in the presence of nano-layered double hydroxide.
研究领域:
材料科学
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化学工程
·
能源材料
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产品关联
DOI
高影响因子
Materials Today Communications
·
2025
·
IF 4.5
Xiaolan SONG,Jie WANG,Yi WANG,Chongwei AN,Fengsheng LI
Utilizing micro-channel technology and meticulously regulating the differential flow rates of the oil and water phases, we successfully synthesized remarkably spherical nB/F 2602 /HNS (hexanitrostilben)microspheres, measuring approximately 200 μm in diameter. The morphological and compositional characteristics of these microspheres were thoroughly analyzed using scanning electron microscopy (SEM), energy dispersive spectroscopy (EDS), X-ray diffraction (XRD), infrared spectroscopy (IR), X-ray photoelectron spectroscopy (XPS), and laser microscopy. Meanwhile, we conducted an in-depth investigation into the catalytic effects of the microspheres on the thermal decomposition of ADN(Ammonium dinitramide)/DAP-4((C 6 H 14 N 2 )[NH4(ClO 4 ) 3 ]), employing thermogravimetric-differential scanning calorimetry (TG-DSC) and burst point assessments. The combustion performance of ADN/DAP-4, both prior to and following the incorporation of nB/F 2602 (fluoroelastomer)/HNS microspheres, was evaluated through high-speed imaging, high-sensitivity infrared thermography, and combustion calorimetry measurements. Furthermore, this study contemplated the combustion mechanism of nB/F 2602 /HNS microspheres. The findings indicated that, after adding nB/F 2602 /HNS microspheres, the thermal decomposition activation energy of ADN/DAP-4 was significantly reduced. These results revealed that the introduction of nB/F 2602 /HNS microspheres markedly enhanced the combustion intensity of ADN/DAP-4, with the pressurization rate accelerating dramatically from 0.55 MPa/s to 3.47 MPa/s. As the burning rate escalated, the maximum combustion temperature increased from 1697°C to 1788°C, and the combustion heat surged from −4478 kJ/kg to −17593 kJ/kg. Moreover, the comparative experimental outcomes, when juxtaposed with samples based on micro-boron (μB), reveal that nano-boron (nB) exhibits a superior burning rate and combustion efficiency. Consequently, the collective findings of these experiments emphatically indicate that nB/F 2602 /HNS markedly enhances the thermolytic and combustion processes of ADN/DAP-4.
研究领域:
含能材料
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推进剂化学
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燃烧工程
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材料合成
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热分析
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产品关联
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2020
·
IF 10.652
Junkai Zeng,Yitong Wang,Zhenyu Sun,Haishuang Chang,Mi Cao,Jie Zhao,Kaili Lin,Youzhuan Xie
Surgical site infection (SSI) with instrumentation is an undesired and troublesome complication in orthopaedics. Surgical debridement is currently the main treatment option. However, the poor prognosis remains the major problem and over 40% of patients needed additional surgery to remove the implant. To eliminate SSI, antibacterial and biocompatible implants are urgently needed. Herein, a novel biocompatible polydopamine (PDA)-IR820-Daptomycin (DAP) coating with triple therapy functions was successfully fabricated to enhance the anti-infection ability and osteogenic property of titanium implants. In which, PDA served as a biocompatible binder to immobilize IR820 and DAP, and possessed photothermal and osteogenic properties. The releasing of DAP inhibited the growth of Staphylococcus aureus and damaged the bacterial membrane. Meanwhile, after 808 nm laser irradiation, the combination of hyperthermia generated by PDA and singlet oxygen ( 1 O 2 ) produced by IR820 eradicated the biofilm noninvasively. Furthermore, this coating successfully accelerated glutathione (GSH) oxidation and destroyed the bacterial membrane, reaching an anti-bacterial efficiency of 97.2% in vitro . Additionally, the coating significantly stimulated the proliferation and osteogenic differentiation of rat bone marrow stem cells (rBMSCs). In vivo, Ti-PDA-IR820-DAP reached an anti-bacterial efficiency of 97.9% in a S. aureus biofilm-infected rat model with 15 min of irradiation at 50 °C and drastically promoted the bone-implant osseointegration in a rat femur condyle defect model. The present study demonstrates that combining antibiotics and phototherapy represents a feasible way to treat bone-implant-associated infections.
研究领域:
生物医学工程
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材料科学
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传染病学
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骨科
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DOI
高影响因子
KOREAN JOURNAL OF CHEMICAL ENGINEERING
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2025
·
IF 3.2
Liu Yang,Liang Kaili,Zhang Keqin,Du Bowen,Hu Lishuang,Yuan Zhilei,Zhang Jianren,Lu Yuewen,Yu Qi,Lv Zhixing
The output energy properties of the AP/Ti, Cl-20/Ti, HMX/Ti, and DAP-4/Ti mixtures were compared using an oxygen bomb calorimeter. The thermal decomposition processes of the above four kinds of mixed energetic materials were studied with a differential scanning calorimeter (DSC), and the apparent activation energies of the mixed materials were calculated using the Kissinger equation. The combustion flames of the four energetic materials were captured through high-speed photography, and the combustion properties of the mixed energetic materials with titanium powders were analyzed. The results indicate that the combustion heat value of DAP-4/Ti mixed energetic materials is up to 10,133 J·g −1 , significantly higher than the 8613 J·g −1 of the Cl-20/Ti mixture and the 9720 J·g −1 of the HMX/Ti mixture. The combustion process of the DAP-4/Ti mixture only takes 145 ms. The heat release, burning rate, and flame strength of the DAP-4/Ti mixture are better than those of other mixed energetic materials. The calculated apparent activation energy of DAP-4/Ti mixture is 150.4 kJ·mol −1 , which is 55 kJ·mol −1 lower than that of DAP-4. The apparent activation energies of Cl-20/Ti and HMX/Ti are 173.6 kJ·mol −1 and 317.2 kJ·mol −1 , respectively. These findings demonstrate that DAP-4/Ti mixed energetic materials exhibit good energy characteristics and combustion performance.
研究领域:
材料科学
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化学工程
·
燃烧学
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产品关联
DOI
高影响因子
INORGANIC CHEMISTRY COMMUNICATIONS
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2022
·
IF 3.428
Jiashun Liang,Kaili Liang,Lifeng Li,Yuqi Cao,Xiong Cao
This paper investigates the effect of Fe 2 O 3 nanosheets as catalysts on the catalytic decomposition performance of DAP-4. Our laboratory has successfully fabricated Fe 2 O 3 nanosheets and DAP-4. The morphology and composition of DAP-4 and Fe 2 O 3 nanosheets were investigated using SEM, XRD and XPS. The catalytic decomposition performance of DAP-4 and DAP-4/Fe 2 O 3 nanosheets mixture samples were characterized by DSC. The results show that the synthesized Fe 2 O 3 nanosheets can reduce the activation energy of DAP-4, Fe 2 O 3 nanosheets have good catalytic activity. And calculate the relevant kinetic parameters for the mixed samples using the Kissinger equation.
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产品关联
DOI
高影响因子
MICROPOROUS AND MESOPOROUS MATERIALS
·
2023
·
IF 5.2
Zhenzhen Tang,Derong Xu,Hongyu Chen,Si Tang,Chunlin He,Shunyan Ning,Min Li,Guoyuan Yuan,Shuangkou Chen,Jian Feng
Metal-organic frameworks are recognized as a new kind of potential adsorbent for wastewater treatment because of their tunable pore size, high surface area and modifiable functionality. In this work, 2,6-diaminopyridine functionalized UiO-66-NH 2 (UiO-66-DAP) was synthesized by a post-modification strategy and was applied to the adsorption of Pd(Ⅱ) from aqueous solution. The aminopyridine structure on UiO-66-DAP greatly improved the adsorption performance for Pd(II), with an adsorption capacity of 190.95 mg/g. The adsorption process of Pd(Ⅱ) on UiO-66-DAP was consistent with the pseudo-second-order kinetic model and the Langmuir adsorption isotherm . Thermodynamic studies confirmed that the adsorption process was endothermic and spontaneous. Regeneration studies showed that UiO-66-DAP was stable and recyclable. Moreover, UiO-66-DAP could maintain high selectivity to Pd(Ⅱ) even in a wastewater containing multiple interfering metal ions. According to the results of Fourier transform infrared spectroscopy (FT-IR), scanning electron microscopy (SEM), energy-dispersive X-ray spectroscopy (EDS), X-ray photoelectron spectroscopy (XPS), zeta potential , comparative experiments and DFT calculations, the chelation and electrostatic attraction between Pd(Ⅱ) and the aminopyridine structural unit are the dominant mechanisms. Using UiO-66-DAP as an adsorbent, this study provides a promising way for the separation of palladium form wastewater.
研究领域:
环境科学
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材料科学
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产品关联
DOI
高影响因子
Journal of Environmental Chemical Engineering
·
2026
·Vol. 14
·期 2
·121635
·
IF 7.5
Shirui Zhao,Zhenxiang Jiang,Yunshuang Hu,Yingzhu Yang,Zhixia Li,Zhaojin Ran,Zhongmin Wang,Yiting Wang,Hua Cen,Guang Deng
There is an urgent need to develop efficient strategies to remove the plant growth regulator forchlorfenuron (CPPU), due to its persistent contamination of aquatic environments. A cost-effective imine-linked porous polymer (Pre-DAP-IPA-POPs) was synthesized through the condensation of 2,6-diaminopyridine (DAP) with isophthalaldehyde (IPA), followed by in situ reduction with KBH 4 to obtain DAP-IPA-POPs. Under optimized conditions (298 K, pH 7, 2 h, and 10 mg of adsorbent), the material achieved a CPPU adsorption capacity of 98.62 ± 8.29 mg·g −1 . Thermodynamic analysis indicated the exothermic nature of the adsorption process ( ΔH 0 =-10.37 kJ·mol −1 ), while kinetic modeling revealed that adsorption reached equilibrium within 2 h and followed a pseudo-second-order kinetic model. 13 C Solid-state NMR and infrared results indicate that the material was successfully synthesized. Furthermore, the successful adsorption of CPPU was evidenced by the emergence of characteristic Cl 2p signals in the XPS spectra of CPPU@DAP-IPA-POPs. Quantum chemical calculations revealed an electron transfer from the HOMO of the unchlorinated phenyl ring in CPPU to the LUMO of DAP-IPA-POPs, which is primarily localized on the C N groups. Noncovalent interaction (NCI) analysis revealed that hydrogen bonding and van der Waals interactions dominated the adsorption process, with steric repulsion exerting a minor opposing effect. These insights collectively demonstrate the promise of DAP-IPA-POPs as a cost-effective and efficient adsorbent for agricultural wastewater remediation.
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产品关联
DOI
高影响因子
THERMOCHIMICA ACTA
·
2026
·
IF 3.6
Junlei Song,Meng Li,Zhiran Wang,Yuexin Shao,Binbin Zhang,Hua Fang,Xiong Cao
Molecular perovskite energetic material (H 2 dabco)[NH 4 (ClO 4 ) 3 ] (DAP-4) is promising for solid propellants; however, its high ignition delay limits practical application. In this work, silver(I) fluoride (AgF) was introduced as a catalyst to prepare DAP-4/AgF composites. Their thermal decomposition and combustion performance were systematically investigated using X-ray diffraction, scanning electron microscopy, differential scanning calorimetry, thermogravimetry, Flynn–Wall–Ozawa isoconversional analysis, combustion testing, and X-ray photoelectron spectroscopy. AgF was uniformly dispersed on DAP-4 particle surfaces. Increasing AgF content progressively lowered the decomposition temperature and reduced the mean apparent activation energy from 295.35 to 119.07 kJ/mol. Combustion performance initially improved and then declined, with DAP-4/AgF-1 showing the strongest response, a combustion heat of 11078 ± 84 kJ/kg, and a strand burning rate of 6.77 mm/s. The combined results are consistent with a possible AgF-associated interface-assisted modification of the overall decomposition process.
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DOI
高影响因子
BRAZILIAN JOURNAL OF CHEMICAL ENGINEERING
·
2026
·
IF 1.5
Liang Jiashun,Cao Xiong
This paper investigates the ignition and combustion properties of DAP-4/W mixture samples. The mixture samples were prepared by artificial mixing, and the PBXs were prepared using F2602 as a binder. The morphology and composition of DAP-4/W mixture samples were investigated using SEM and XRD. The decomposition performance of DAP-4 and DAP-4/W mixture samples was characterized by DSC. The mixture samples and PBXs were ignited using electric and chemical ignition, respectively. The results showed that the composite material composed of DAP-4 and W particles could accelerate the decomposition of DAP-4 and increase the energy release. In combustion experiments, it was found that the involvement of W particles can effectively prolong the combustion time of DAP-4, which shows that W particles can carry out a long energy supply. This work carried out in this study could be of some reference value for research in DAP-4 composites.
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产品关联
DOI
高影响因子
SHOCK WAVES
·
2026
·Vol. 36
·期 1
·9
·
IF 1.8
Zhang L.,Zhao C.,Xu Z.,Shi Y.,An E.,Liang J.,Cao X.
Boron (B) is considered as a high-energy additive for solid propellants owing to its high mass and volumetric calorific values. DAP-4, a novel solid energetic material, exhibits excellent detonation performance and strong oxidizing properties, making it a promising high-energy oxidizer for solid propellants. To explore the ignition and combustion characteristics of DAP-4-based boron-containing high-energy materials, mixed powders of DAP-4 and nanometric boron (nano-B) materials with varying mass ratios were prepared through mechanical blending. X-ray diffraction (XRD) analysis confirmed the crystalline structure of the DAP-4/nano-B mixed powder and the absence of additional compounds or phases. Scanning electron microscope (SEM) observations revealed that nano-B particles effectively adhered to the surface of the DAP-4 particles, with the density of attached nanometric boron increasing as its content in the samples increased. Elemental mapping and Energy Dispersive X-ray Spectroscopy (EDS) further validated this surface modification. TG-Differential Scanning Calorimetry (DSC) analysis indicated good compatibility between DAP-4 and nano-B, with minimal mutual influence during thermal decomposition under heating. The ignition and combustion characteristics of the DAP-4/nano-B mixed powders were investigated using a shock tube at temperatures of 2200–3100 K and pressures of 0.1 MPa and 0.5 MPa. Results showed that both ignition delay time and burn time decreased with increasing temperature, whereas pressure had a negligible effect. As the boron content increased from 0 to 30%, the ignition delay time decreased, while the burn time initially decreased and then increased. Overall, the addition of nano-B effectively enhanced the combustion of DAP-4/nano-B mixed powders. In practice applications, the ignition and combustion performance of DAP-4 can be tailored by adjusting the mass fraction of boron powder.
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DOI
高影响因子
VACUUM
·
2026
·
IF 4.3
Meng Li,Haiting Liu,Guoliang Liu,Jiani Dong,Jia Gao,Binbin Zhang,Xueyong Guo,Hua Fang,Xiong Cao
Molecular perovskite energetic material (H 2 dabco)[NH 4 (ClO 4 ) 3 ] (DAP-4) has attracted significant attention. However, its high thermal decomposition temperature hinders its application in propellants. To reduce its reaction energy barrier and modulate its decomposition and combustion performance, the catalytic effect of copper fluoride (CuF 2 ) on the thermal decomposition and combustion behavior of DAP-4 was systematically investigated in this work. DAP-4/CuF 2 composites with different CuF 2 contents (1 wt%, 3 wt%, and 5 wt%) were prepared by a mechanical mixing method. Their morphology, thermal behavior, reaction products and combustion mechanism were comprehensively characterized by SEM, XRD, DSC, TG, high-speed combustion photography, XPS and MS. The results indicated that the CuF 2 significantly reduced the thermal decomposition temperature of DAP-4 with a maximum decrease of 35.2 °C and the apparent activation energy decreased markedly, dropping from 370.40 kJ/mol for pure DAP-4 to approximately 155.82 kJ/mol for the DAP-4/5 wt%CuF 2 . Combustion experiments revealed that both the combustion pressure and pressurization rate were enhanced. A possibly reaction mechanism of energy release of DAP-4 with CuF 2 was proposed that CuF 2 accelerated the initial decomposition of DAP-4 through proton transfer reactions between ClO 4 − /F − and NH 4 + , leading to enhancing the reaction kinetics. This study provided a new pathway for the design and fabrication of DAP-4-based energetic materials in solid propellants.
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DOI
高影响因子
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