Foods
·
2022
·Vol. 11
·期 21
·3333
·
IF 5.561
Liying Li,Cheng Yang,Jian Zhang,Lianfu Zhang
The objective was to design a feasible drying method to increase the retention rates of phytoene (PT), phytofluene (PTF) and lycopene (LYC) in tomato powder. The method was to compare the effects of vacuum freeze-drying (FD), vacuum drying (VD) and hot-air drying (HAD) technologies on tomato pulp rich in PT, PTF and LYC. When dried by HAD, the retention rates of PT, PTF and LYC decreased significantly (p< 0.05) only when the water content decreased from 30% to 3.5%. When dried by VD, the temperatures had no significant effect on the retention rates, and only alkaline conditions (pH = 9), Fe3+and Al3+could significantly reduce the retention rates (p< 0.05). Therefore, a combined drying process (CDP) was designed: before the water content decreased to 50%, HD (60 °C) technology was used; then, the paste was dried via VD (80 °C, 0.08 MPa) technology till the water content reached 5 ± 2%; loading weight was 40 g (thinkness 5.70 mm) for each batch. Compared with VD alone, the CDP technology improved the retention rates of PT and LYC by 12% and 36%, respectively, while PTF decreased by only 6%.Keywords:phytoene (PT);phytofluene (PTF);lycopene (LYC);drying technology;retention rate
研究领域:
食品科学
·
农业工程
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产品关联
DOI
PubMed
高影响因子
JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY
·
2022
·
IF 5.895
Shuohan Ma,Qingqing Zhu,Siyu Yao,Ruihao Niu,Yu Liu,Yu Qin,Yuxue Zheng,Jinhu Tian,Dandan Li,Wenjun Wang,Donghong Liu,Enbo Xu
The starch–phenolics complexes are widely fabricated as functional foods but with low phenolics retention limited by traditional liquid reaction and washing systems. In this study, ferulic acid (FA, 5%) was exogenously used in the crystalline form, and it reacted with starch in a high-solid extrusion environment, which was simultaneously controlled by thermostable α-amylase (0–252 U/g). Moderate enzymolysis (21 or 63 U/g) decreased the degree of the starch double helix and significantly increased the FA retention rate (>80%) with good melting and distribution. Although there were no significantly strong chemical bonds (with only 0.17–2.39% FA bound to starch hydrolysate), the noncovalent interactions, mainly hydrogen bonds, van der Waals forces, and electrostatic interactions, were determined by 1H NMR and molecular dynamics simulation analyses. The phased release of total FA (>50% in the stomach and ∼100% in the intestines) from bioextrudate under in vitro digestion conditions was promoted, which gives a perspective for handing large loads of FA and other phenolics based on starch carrier.
研究领域:
食品科学
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生物化学
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产品关联
DOI
PubMed
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2023
·
IF 15.1
Enchao Wang,Li Chen,Xinmiao He,Yucheng Xiang,Shuangyi Jia,Yisheng Chen,Zhongxiang Guo,Junyi Luo,Hui Dan,Yi Ding,Tao Duan
The development of Bi-based composites with low cost, high adsorption capacity and retention is highly desired for iodine gas capture. Herein, three novel Bi-based composites (Bi 0 -SiO 2 , Bi 0 -C/SiO 2 and Bi 0 -C) were prepared by simple sintering process using rice husk as C and SiO 2 sources and applied for iodine gas capture. The results demonstrated that the type of support strongly affected the iodine adsorption and retention. The Bi 0 -SiO 2 , Bi 0 -C/SiO 2 and Bi 0 -C composites exhibited the iodine adsorption capacity of 812, 911 and 1334 mg/g, and the iodine retention ratio of 90.9, 86.9 and 65.4%. The Bi 0 -SiO 2 showed the highest iodine retention because the SiO 2 supports have no affinity for iodine and the adsorption mainly came from the chemical adsorption of Bi 0 (2Bi + 3I 2 = 2BiI 3 ). While the Bi 0 -C exhibited the highest adsorption capacity due to the synergistic adsorption effect between C supports and Bi 0 sites. Except for the chemical reaction, charge transfer between C and I (C-I) also contributed to the iodine adsorption. The results demonstrated that the new Bi-based composites would be promising iodine gas adsorbent and the new strategy could be extended to the development of other adsorbents.
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
CARBOHYDRATE POLYMERS
·
2025
·
IF 12.5
Jiahe Li,Roufen Wu,Wen-Jun Wang,Khak Ho Lim,Xuan Yang
The development of economic and functional papers relies on the introduction of functional filler particles but faces several challenges, especially the low filler retention and inferior mechanical properties. This study introduces plant-based cellulose nanofibrils (CNFs) as dual-function retention and strengthening agents, offering a sustainable alternative to petroleum-based polymer additives. Precipitated calcium carbonate (PCC), a widely used filler, is selected as the model system. The effects of CNF dosage, aspect ratio, and surface carboxyl content on the filler flocculation process were systematically investigated, with additional enhancement achieved through cationic ion crosslinking to improve filler bridging. Remarkably, a superior filler retention rate (>90 %) and filler-tensile factor (2.0) were achieved for the final papers at very low CNF dosage (1 %), surpassing most literature data. Detailed analyses of filler morphology and distribution elucidated the structure-property relationships underlying this performance. Furthermore, the versatility of the approach was demonstrated with other functional fillers, imparting properties such as flame retardancy, oil/water separation, high brightness, and soluble organic pollutant absorption. Overall, this study reveals the critical feature of CNFs in simultaneously improving filler retention and mechanical properties, demonstrating their high potential for their applications in the papermaking industry.
研究领域:
造纸科学
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材料科学
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产品关联
DOI
PubMed
高影响因子
JOURNAL OF POWER SOURCES
·
2019
·
IF 7.467
Rusheng Fu,Yunsong Li,Yongkang Wu,Chengxu Shen,Chongzhao Fan,Zhaoping Liu
Silicon suboxides (SiO x , 0 < x < 2) have been shown commercial prospect in lithium-ion batteries because of relative high capacity and mild volume expansion. However, few methods are available to prepare oxygen-tunable SiO x . Herein, we introduce a bottom up strategy to realize the consecutively regulation of oxygen content in SiO x via stepwise oxidizing silicane/siloxene precursor. Experimental results show that x value rapidly increases up to 1.5 and then rises extremely to 2.0 with minor slope. Furthermore, theory calculations indicate oxygen is preferentially inserted into Si–Si bonds to form buckled Si–O–Si limited to SiO 1.5 H with higher driving force than the following Si–OH formation which is well consistent with the experimental results. Virtually, nominal SiO x is substantially the mixture of Si, SiO 0.5 , SiO, SiO 1.5 and SiO 2 with SiO 1.5 as the predominate component. Among the representative SiO x samples, SiO 1.47 exhibits the optimal electrochemical performance with reversible capacity of around 700 mAh g −1 and almost 100% capacity retention at 0.5C (1C = 1500 mA g −1 ) after 300 cycles because of higher Li-ions diffusivity and less fracture. In addition, 95.4% capacity retention is achieved after 100 cycles at 0.2C in full-cell system.
研究领域:
材料科学
·
能源存储
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DOI
高影响因子
Results in Engineering
·
2023
·
IF 5
Hansheng Huang,Hao Zhang,Feng Xiao,Jingyi Liang,Yanhui Wu
In this paper, the performance of three-layer film composite (TFC) forward osmosis (FO) membrane for the retention of fluoride ions was investigated. A cellulose nanocrystal (CNC) interlayer was introduced on the porous substrate by coating method to enhance the hydrophilicity and retention capacity of the FO membrane. In order to improve the dispersibility of CNC, boric acid (BA) and (3-aminopropyl)triethoxysilane (APTES) were used for chemical modification, respectively. The characterization results demonstrated the successful introduction of CNC, BA/CNC and APTES/CNC–CNC interlayers. The introduction of the interlayer enhanced the hydrophilicity of the membrane and increased the negative surface charge, which facilitated the transport of water molecules and the retention of fluoride ions. The FO tests indicated that the water flux of TFC/CNC membrane was increased by 46.4% compared to the original TFC membrane, and the water flux of TFC/APTES-CNC and TFC/BA-CNC membranes were higher than that of TFC/CNC membranes by 5.9% and 13.0%, respectively. 97.0% and 97.6% of the fluoride ions of TFC/BA-CNC and TFC/APTES-CNC could be retained. Based on the molecular simulation of adsorption, it was demonstrated that BA-CNC interlayer was more favorable for the adsorption of water molecules than CNC and APTES-CNC interlayer. This study contributes to the development of high-performance TFC-FO membrane for the treatment of wastewater containing fluoride.
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
Polymers
·
2019
·Vol. 11
·期 12
·1975
·
IF 3.164
Lili Wu,Qiuhu Lin,Cong Liu,Wanyu Chen
A hydrophilic and anti-fouling coating layer was constructed on a polyvinylidene fluoride (PVDF) microfiltration membrane by a novel surface modification method. The pristine membrane was firstly coated by (3-chloropropyl) trimethoxysilane/polyethyleneimine and tannic acid. Then, the metal ion was induced on the coating layer to coordinate with tannic acid and polyethyleneimine, forming a more stable and hydrophilic coating on the surface. The membrane’s surface morphology and chemical element analysis showed that the Tannic acid/ polyethyleneimine (TA/PEI) coating layer was denser and had more stability after the addition of metal ions, and this may be due to the coordination bond formed between the TA/PEI coating and metal ions. The results of the water contact angle and pure water flux measurements showed that the hydrophilicity and wettability of the modified membranes were improved obviously after introducing the metal ion layers. The anti-fouling performance and stability of the modified membrane were also characterized by the underwater oil contact angle (OCA), the separation efficiency, and the contact angle variation value for before and after the rinsing experiment. The modified membrane showed obvious stability and antifouling. Moreover, the retention rate of some composite membranes could reach 99.6%.Keywords:surface modification;metal ion;anti-fouling;retention rate
研究领域:
材料科学
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环境工程
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产品关联
DOI
PubMed
高影响因子
JOURNAL OF APPLIED POLYMER SCIENCE
·
2022
·Vol. 139
·期 46
·e53247
·
IF 3.057
Weikun Jia,Lan Wang,Yan Xu,Xiaotao Wen,Xueyan Ma,Zhaoyang Cui
To overcome the poor conductivity of electrode film in bio-gel electroactive actuator, graphene was introduced into its structure to prepare a kind of bio-gel electroactive actuator based on chitosan, and its actuation characteristics were analyzed. First of all, the output characteristics of the electroactive actuator prepared with the addition of graphene oxide （GO）were tested to obtain the variation patterns of bending force and displacement. Second, electrochemical and microscopic tests were carried out and the water retention rate was analyzed to explore the internal reasons for the improvement of output characteristics. Third, how the mass fraction of GO influences the polymer electroactive actuator's bending force performance was comprehensively analyzed. The results show that adding GO significantly improved the electroactive actuator's performance. Adding graphene oxide into the polymer actuator was proved to be an effective strategy to improve the actuator's actuation properties.
研究领域:
材料科学
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生物工程
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产品关联
DOI
高影响因子
JOURNAL OF MOLECULAR LIQUIDS
·
2021
·
IF 6.165
Ting Ling,Ping Li,Xiaoyi Yang,Jianbo Li,Zhaoli Jiang,Xiaodan Ren,Chaohua Guo
Sodium oleyl sulfate with high double bond retention of 95.69 % (SOS-95) was successfully prepared by using sulfamic acid as a sulfating reagent, and its structure was identified by Fourier transform infrared (FT-IR) and hydrogen nuclear magnetic resonance spectroscopy ( 1 H NMR). Compared with octadecyl sodium sulfate (OSS) and sodium oleyl sulfate (SOS-77) with double bond retention rate of 77.38 %, the surface properties such as equilibrium surface tension, dynamic surface tension, and dynamic contact angle were analyzed. The results showed that SOS-95 had a lower surface tension ( γ cmc ) of 31.96 mN/m, and the lower critical micelle concentration (CMC) of 0.028 mmol/L. Moreover, it had good adsorption, diffusion and relatively excellent spreading performances, the contact angle can reach as low as 56.87° in 130 s. The aggregation behavior was researched by transmission electron microscopy (TEM), and the sizes of the aggregates were analyzed by dynamic light scattering (DLS). The results showed that sphere-like micelles were formed spontaneously by aqueous solutions of SOS-95 at CMC , and the higher the concentration, the larger the size of the aggregates. Polarized optical microscopy (POM) combined with small Angle X-ray scattering (SAXS) analysis confirmed that lamellar phase liquid crystal structure with Maltese cross flower was formed in aqueous of SOS-95.
研究领域:
化学
·
材料科学
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DOI
高影响因子
Journal of Chemistry
·
2013
·
IF 0
Zhongbin Ye,Xiaoping Qin,Nanjun Lai,Qin Peng,Xi Li,Cuixia Li
A novel copolymer containing nano-SiO2 was synthesized by free radical polymerization using acrylamide (AM), acrylic acid (AA), and nano-SiO2 functional monomer (NSFM) as raw materials under mild conditions. The AM/AA/NSFM copolymer was characterized by infrared (IR) spectroscopy, 1H NMR spectroscopy, elemental analysis, and scanning electron microscope (SEM). It was found that the AM/AA/NSFM copolymer exhibited higher viscosity than the AM/AA copolymer at 500 s−1 shear rate (18.6 mPa·s versus 8.7 mPa·s). It was also found that AM/AA/NSFM could achieve up to 43.7% viscosity retention rate at 95°C. Mobility control results indicated that AM/AA/NSFM could establish much higher resistance factor (RF) and residual resistance factor (RRF) than AM/AA under the same conditions (RF: 16.52 versus 12.17, RRF: 3.63 versus 2.59). At last, the enhanced oil recovery (EOR) of AM/AA/NSFM was up to 20.10% by core flooding experiments at 65°C.
研究领域:
化学工程
·
石油工程
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产品关联
DOI
CHEMICAL ENGINEERING JOURNAL
·
2023
·
IF 15.1
Huihui Luo,Fan Yang,Chao Li,Yifei Zhong,Cheng Cheng,Shaolei Wang,Shangbin Jin
Anhydrous proton conducting polymer membrane materials have raised much attention in the application of high-temperature proton-exchange membranes (HT-PEMs) fuel cells, which convert chemical energy into electrical energy. Polybenzimidazole-based polymers, as typical materials for HT-PEMs, their compact structures result in small fractional free volumes (FFV), which is not conducive to the adsorption and retention of proton carriers. Herein, a series of polybenzimidazole-based polymers of intrinsic microporosity (PIM-PBIs) were synthesized. PIM-PBIs possess the benzimidazole units and porous structures, and have good thermal stability and large specific surface area (100 ∼ 400 m 2 /g). PIM-PBIs are further embedded in polyvinylidene fluoride (PVDF) to form mixed matrix membranes for high-temperature proton conduction. The resulting membranes exhibit high proton conductivity up to 90.11 mS cm −1 at 140 ℃ and high phosphoric acid (PA) retention rate of 90.0 %. This work provides a facile method for the precise design and preparation of proton-conducting porous materials.
研究领域:
材料科学
·
能源工程
·
化学工程
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产品关联
DOI
高影响因子
JOURNAL OF HAZARDOUS MATERIALS
·
2025
·
IF 11.3
Guanqing Hu,Qingguo Zhang,Yongde Yan,Yun Xue,Fuqiu Ma,Yuelin Wang,Xin Liu,Jinlong Song
With the rapid development of the global nuclear industry, substantial amounts of radioactive tributyl phosphate (TBP) have accumulated during the PUREX process. Prolonged accumulation poses significant environmental risks. Therefore, this study proposes an efficient molten salt oxidation (MSO) method for the treatment of gelled TBP. Comprehensive thermal analysis data indicate that the oxidation process of gelled TBP primarily consists of three stages. The composition of the waste salts after the MSO process was analyzed using X-ray diffraction spectroscopy. Fourier transform infrared spectroscopy revealed that the primary functional groups in gelled TBP were progressively degraded with increasing temperature. Scanning electron microscopy clearly illustrated the decomposition process of gelled TBP. X-ray photoelectron spectroscopy results identified the predominant forms of residual substances. The generated exhaust gas was analyzed using gas mass spectrometry and chromatography. Additionally, through DFT calculations of TBP, the possible reaction mechanism of TBP in the molten salts was deduced. In the molten state, carbonate can effectively absorb P 2 O 5 and eventually form stable NaPO 3 , which is the reason for the 94.90 % retention rate of phosphorus element. During the experimental process, the degradation rate of gelled TBP reached as high as 99.99 %. The MSO method proposed in this study shows great potential for the treatment of liquid organic waste.
研究领域:
核化学与化工
·
环境科学
·
计算化学
✓ 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）