Journal of Food Measurement and Characterization
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2022
·Vol. 16
·期 6
·4470-4485
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IF 3.006
Nilsson Klara,Sandström Corine,Özeren Hüsamettin Deniz,Vilaplana Francisco,Hedenqvist Mikael,Langton Maud
The structure and physicochemical properties of starch isolated from the cotyledon and hull of faba beans and from wheat (as reference) were examined using 16 different methods. The amylose content in faba bean cotyledon and hull starch was 32% and 36%, respectively, and that in wheat starch was 21%. The faba bean cotyledon and hull starch were structurally alike both displaying C-polymorphic pattern, a similar degree of branching and similar branch chain length distributions. Wheat starch had a significantly greater prevalence of short amylopectin chains (DP < 12) and a higher degree of branching. Granules in both faba bean starches exhibited surface cracks and were more homogenous in size than the smoother wheat starch granules. Gelatinisation temperature was higher for the faba bean starches, likely as an effect of high amylose content and longer starch chains delaying granular swelling. Cotyledon starch produced pastes with the highest viscosities in all rheological measurements, probably owing to larger granules. Higher prevalence of lipids and resistant starch reduced the viscosity values for hull starch. For all starches, viscosity increased at faster heating rates. During the rheological analyses, the samples were exposed to different instruments, heating rates and temperatures ranges, differing from standard rheological procedures, which could help predict how different processing techniques effect the final starch textures. Graphical abstract
研究领域:
食品科学
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植物化学
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生物材料
✓ 已验证
DOI
高影响因子
POLYMER DEGRADATION AND STABILITY
·
2022
·
IF 5.204
Yanlu Sun,Zhengqi Wang,Dequn Wu,Xueli Wang,Jianyong Yu,Ruchao Yuan,Faxue Li
The absence of flame retardant with suitable thermal feature and high flame retardancy has greatly limited the development of flame-retardant polyamide 6 (PA6). In this work, a phosphorus-containing flame retardant (CBPB) with appropriate flame responsive nitrile groups was synthesized, and its melting temperature, cross-linking temperature and initial degradation temperature exactly matched the thermal feature of flame retardant suitable for PA6. PA6/CBPB composites (FR-PA6s) were prepared by melt-blending various contents of CBPB into PA6 matrix. The UL-94 and limiting oxygen index (LOI) of FR-PA6s reached V-0 and 32.0% respectively once 8 wt% of CBPB was added to PA6 matrix. As a representative, FR-PA6-6 (6 wt% of CBPB in PA6 matrix) was successfully melt-spun into filaments with good mechanical properties. The filament strand was self-extincted within 4 s and only one droplet was generated after ignited in the vertical burning tests. The corresponding anti-dripping and flame-retardant mechanism were also explored. Suppression of melt-dripping of FR-PA6s was formed due to the chemical cross-linking of nitrile groups of CBPB at ∼290 °C, which significantly exceeded the general processing temperature of PA6 (∼260 °C) and so the processability of FR-PA6s was slightly affected. The enhanced flame resistance of FR-PA6s was contributed to the quenching effect of PO· and PO 2 · radicals as well as the diluting effect of NH 3 in the gas phase.
研究领域:
材料科学
·
高分子化学
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产品关联
DOI
高影响因子
ADVANCED MATERIALS
·
2024
·
IF 27.4
Yuzhen Wang,Qimeng Zhang,Chenghao Yang,Zhiguo Xia
Thermal characteristics are essential for improving the performance and monitoring the status of Li-ion batteries (LIBs). However, it is a challenge to design efficient and facile sensing materials for the detection of the in situ temperature of a working LIB. Herein, a ratiometric fluorescence optical fiber is developed and real-time temperature monitoring is performed with a measurement accuracy of 0.12 °C, and the feasibility based on this polymer optical fiber composed of NaLaTi 2 O 6 :Yb/Er phosphors is verified in a pouch-type battery. During the charging and discharging cycles, the in situ temperature is instantaneously conveyed, revealing the internal situation of LIBs. This article further dwells on the thermal characteristics in constant current (CC)/constant voltage charging and CC discharging processes at different C-rates and the battery failure when operated at low temperatures (0 °C). This work demonstrates an innovative strategy for operando solitary temperature monitoring conducted by ratiometric fluorescence optical fiber.
研究领域:
材料科学
·
能源技术
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Advanced Composites and Hybrid Materials
·
2022
·Vol. 5
·期 2
·1268-1279
·
IF 11.806
Su Ji-Ling,Wang Juan,Fu Xiao-Na,Hou Li,Zhu Ping,Zhang Kai,Li Huo-Wang,Hou Ying,Liu Xiang-Yi,Xu Juan
This study explored the physicochemical properties, fatty acid compositions, and thermal characteristics of Malania oleifera seed oil (MOSO). Our data showed that the refractive index and specific gravity of MOSO at ambient temperature were 1.461 and 0.913, respectively. The oil content, acid, peroxide, saponification, iodine value, average molecular weight, and an average number of carbon–carbon double bond per triglyceride were 47.8%, 3.62 mg KOH/g oil, 4.61 meq O 2 /kg oil, 163.16 mg KOH/g oil, 104.28 g I 2 /100 g oil, 1031.51 g/mol, and 4.24, respectively. The fatty acid profiles of the methyl esters showed the presence of 96.09% unsaturated fatty acids and 2.16% saturated fatty acids. Nervonic acid (NA) was the major component (45.04%). These results suggested that MOSO is an excellent source of essential fatty acids and NA and may be used as a potential NA resource of health supplements and medicines. Graphical abstract
研究领域:
植物学
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食品科学
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化学工程
✓ 已验证
产品关联
DOI
高影响因子
APPLIED THERMAL ENGINEERING
·
2022
·
IF 6.465
Zhigao Sun,Zhifan Chen,Mingrui Liu
In order to improve the thermal conductivity of organic phase change materials and overcome the shortcomings of large supercooling degree and phase separation of inorganic phase change materials, the composites of sodium acetate, stearic acid and octadecyl alcohol as phase change materials were prepared by melt blending method, where disodium hydrogen phosphate dodecahydrate was used as nucleating agent and carboxymethyl cellulose as thickener in this work. XRD, DSC and T-history techniques were used to analyze the composite phase change materials. Sodium acetate, stearic acid and octadecyl alcohol are physically blended in the ternary composite phase change materials. Sodium acetate improves the thermal conductivity and latent heat of the eutectic mixtures of stearic acid and octadecyl alcohol, where the thermal conductivity and latent heat of the eutectic mixtures of stearic acid and octadecyl alcohol is increased by 384 % and 28%, respectively. Heat conduction and natural convection act together, but natural convection plays an important role in the melting process. While heat conduction plays an important part in the discharging process. Due to natural convection, the charging time of the composite phase change materials is less than the discharging time.
研究领域:
材料科学
·
热能工程
✓ 已验证
产品关联
DOI
高影响因子
OPTICS AND LASER TECHNOLOGY
·
2024
·
IF 4.6
Changping Xu,Yangyuan Zhang,Yangbo Bai,Yinping Miao
Sodium copper chlorophyllin (SCC) is a widely used food coloring which is natural and stable, but excessive intake can lead to hepatotoxicity and neurotoxicity. In this paper, a highly sensitive Fabry–Perot sensing technique for the detection of SCC is proposed based on its photothermal properties. The suggested sensor is constructed of a single-mode optical fiber encapsulated in a fiber capillary forming a Fabry–Perot cavity. The experimental results showed that the sensitivity of the SCC sensor was significantly improved up to 9.128 nm/(mg/L) under 405 nm laser irradiation with a detection limit of 0.00219 (mg/kg), which is three orders of magnitude lower than that of conventional high-performance liquid chromatography (HPLC). The sensor has a compact form and an integrated all fiber structure, which has potential applications in food safety monitoring, drug manufacturing and illness diagnostics.
研究领域:
食品安全
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光学传感
·
毒理学
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF HAZARDOUS MATERIALS
·
2018
·
IF 6.434
Xiaolei Ye,Shenghui Guo,Wenwen Qu,Li Yang,Tu Hu,Shengming Xu,Libo Zhang,Bingguo Liu,Zimu Zhang
The exploration of the dielectric properties of waste hydrodesulfurization catalysts has important guiding significance for the development of microwave heat treatment of waste hydrodesulfurization catalysts for the recovery of valuable metals. The resonant cavity perturbation technique was used to measure the dielectric properties of waste catalyst and the mixture of waste catalyst and Na 2 CO 3 during roasting from room temperature to 700 °C at 2450 MHz. The heating properties of the waste catalyst and mixture of waste catalyst and Na 2 CO 3 were determined in the microwave field. The results show that the waste catalyst and the mixture of waste catalyst and Na 2 CO 3 exhibit strong microwave response capability, and the dielectric constant, dielectric loss factor, and dielectric loss tangent increase with increasing temperature; from 20 to 300 °C, the waste catalyst and the mixture of waste catalyst and Na 2 CO 3 heated at a slower rate, while the material heated rapidly from 300 to 700 °C. In addition, the mechanism of microwave action has been proposed based on the study of dielectric properties and heating properties in the microwave field.
研究领域:
材料科学
·
环境工程
✓ 已验证
DOI
高影响因子
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
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2017
·
IF 2.714
Zhilin Xi,Zhenya Feng,Ang Li
For the control of pulverized coal, we propose a dust suppressant by applying a blend of mixed polyethylene oxide (g-PEO) and sodium dodecyl sulfate ( SDS ). In our experimental study, the thermal characteristics, critical micelle concentration ( CMC ), wettability and adhesion of the dust suppressant are investigated. It was found that g-PEO had a low fusing temperature and its combustion temperature was close to that of coal, thus, the solution containing g-PEO applied coal dust control did not affect the use of the coal. Based on steady-state fluorescence using pyrene as a fluorescent label, quantitative analysis revealed that the CMC s of g-PEO and SDS were 1 and 20 g/L in g-PEO& SDS solution, respectively. The solution containing SDS had the best wettability, but it only had a short-term effect. The solution containing g-PEO showed negligible wetting ability to wet coal dust. The solution containing g-PEO& SDS had better wetting ability and adhesion. Scanning electron microscopy showed that the coal dust covered by g-PEO& SDS on its surface could form a thin layer of armor by holding the particles together after air-drying. It was concluded that the g-PEO& SDS solution containing g-PEO for 1 g/L and SDS for 20 g/L could suppress coal dust and maintain a long-term effect.
研究领域:
环境工程
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矿业安全
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颗粒物控制
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表面化学
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燃烧科学
✓ 已验证
DOI
高影响因子
Advanced Healthcare Materials
·
2023
·
IF 10
Xiaohu Zhou,Tiantian Chen,Tengda Ma,Lizhao Yan,Haojie Wei,Shuang Liu,Zhiyin Dai,Zhizhong Xie,Jun Deng,Shengxiang Tao,Lihong Fan,Yingying Chu
Bacterial infection is a critical factor in wound healing. Due to the abuse of antibiotics, some pathogenic bacteria have developed resistance. Thus, there is an urgent need to develop a non-antibiotic-dependent multifunctional wound dressing for the treatment of bacteria-infected wounds. In this work, a multifunctional AOCuT hydrogel embedded with CuS@TA-Fe nanoparticles (NPs) through Schiff base reaction between gelatin quaternary ammonium salt – gallic acid (O-Gel-Ga) and sodium dialdehyde alginate (ADA) along with electrostatic interactions with CuS@TA-Fe NPs is prepared. These composite hydrogels possess favorable injectability, rapid shape adaptation, electrical conductivity, photothermal antimicrobial activity, and biocompatibility. Additionally, the doped NPs not only impart fast self-healing properties and excellent adhesion performance to the hydrogels, but also provide excellent peroxide-like properties, enabling them to scavenge free radicals and exhibit anti-inflammatory and antioxidant capabilities via photothermal (PTT) and photodynamic (PDT) effects. In an S. aureus infected wound model, the composite hydrogel effectively reduces the expression level of wound inflammatory factors and accelerates collagen deposition, epithelial tissue, and vascular regeneration, thereby promoting wound healing. This safe and synergistic therapeutic system holds great promise for clinical applications in the treatment of infectious wounds.
研究领域:
生物医学工程
·
材料科学
·
伤口护理
✓ 已验证
产品关联
DOI
PubMed
高影响因子
FOOD RESEARCH INTERNATIONAL
·
2025
·
IF 8
Ahmed H. Abdullah,Manman Lu,Zhilong Zeng,Yijia Li,Haoyuan Wang,Qin Xiaoli,Naglaa A.A. Abd-Elkarim,Eman M.A. Taha,Xiong Liu
In this study, steamed Polygonatum sibiricum (SPS) was utilized as a novel source of polysaccharides and saponins to improve the glycemic response of extruded rice by combining rice flour with various amounts of SPS (0 %, 3 %, and 5 % w /w), to reform extruded rice-SPS complexes using twin-screw extrusion. The effects of SPS on cooking and textural properties, in vitro starch digestion, thermal properties, crystalline structure, and morphology were thoroughly investigated. The results indicated that SPS enhanced cooking performance, leading to longer cooking times, improved water absorption, and increased cooking loss. In vitro digestion experiments revealed a significant increase in slowly digestible starch (SDS) and resistant starch (RS) levels with adding SPS, indicating a deceleration in starch hydrolysis. Structural analyses using X-ray diffraction (XRD) and Fourier transform infrared spectroscopy (FTIR) showed that SPS interacted with rice starch during extrusion, resulting in decreased crystallinity due to complex formation. The expected glycemic index (eGI) of the extruded rice decreased significantly from 90.39 to 83.72 with adding SPS. These findings suggest that SPS is a valuable supplement for enhancing the glycemic response of extruded rice by lowering its eGI and improving water absorption.
研究领域:
食品科学
·
碳水化合物化学
·
功能食品
·
营养学
·
淀粉工程
·
分子营养学
·
食品加工
✓ 已验证
产品关联
DOI
PubMed
高影响因子
PROCESS SAFETY AND ENVIRONMENTAL PROTECTION
·
2022
·
IF 7.926
Gang Fu,Lei Ni,Dan Wei,Juncheng Jiang,Zhiquan Chen,Yong Pan
In this study, toluene nitration was scaled up in a meso-scale flow reactor and safety was considered. The exothermic characteristic was demonstrated in a batch calorimeter . Parallel flow was observed in the flow channel and numerical simulation was carried out to show the hydrodynamics . Mass transfer coefficient of the reactor mixer was determined. The effects of flow rates, temperatures and molar ratios on toluene nitration in the flow reactor were analyzed. The conversion of toluene increased from 26% to 86% with the increase of flow rates while the impacts of temperatures and molar ratios were comparatively small. A productivity of 2572 kg/a could be achieved by this meso-scale flow reactor but the highest overtemperature inside the channel was more than 21.3 ∘ C. A comparison between performances of the batch calorimeter and the flow reactor was also presented. The finding of this study can serve as a reference to design inherently safer meso-scale flow reactors for kinetically fast and highly-exothermic reactions.
研究领域:
化学工程
·
反应工程
·
过程安全
✓ 已验证
产品关联
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2024
·
IF 13.3
Liang Zhang,Wen He,Yiya Ping,Wenze Wang,Puyuan Hu,Bingzhi Li,Wenxin Zhu,Jing Sun,Yanwei Ji,Jianlong Wang
Confronting the escalating challenges of food waste and safety, primarily attributed to microbial-induced spoilage, this investigation unveils a cutting-edge nanozyme-based antimicrobial packaging paradigm with self-activating mechanism (CMn 0.20 -CS film), employing low-thermal aid to optimize the preservation of fruits and vegetables. At its core, the system amalgamates a carbon nanotube-supported Mn 3 O 4 (CMn) filler within a chitosan (CS) film matrix. The fabrication of the CMn complex involves a dual-stage process, initially focusing on the immobilization of Mn 2+ ions, followed by the wet chemical nucleation of Mn 3 O 4 crystals. A pivotal feature of this construct is the weak acidity of CS matrix, which imparts the CMn 0.20 -CS film with a self-activating capacity, facilitating an optimal environment for the manifestation of oxidase-like activity. The CMn 0.20 -CS film exhibits a synergistic antimicrobial efficacy, derived from the augmented oxidase-mimetic and photothermal characteristics of CMn, in conjunction with the intrinsic microbial capture and killing capabilities of CS. This translates into formidable bactericidal proficiency (exceeding 99.99 % for bacteria and 99.67 % for mold), swift action (within 10 min), and a requirement for minimal auxiliary heat (56.4 ℃). Based on this, the CMn 0.20 -CS film significantly prolongs the shelf life of kumquats, extending its shelf life by 2.3 times. The augmented mechanical strength, improved barrier qualities, and demonstrated safety profile of the film underscore its potential for practical applications. Collectively, the CMn 0.20 -CS film stands out as an exceptionally suitable method for the effective preservation of perishable goods, tackling fundamental concerns in food safety and wastage mitigation.
研究领域:
材料科学
·
纳米技术
·
食品科学
·
生物技术
·
化学工程
✓ 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）