FOOD HYDROCOLLOIDS
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2023
·
IF 10.7
Lin Li,Jia-Nan Yan,Bin Lai,Ce Wang,Jin-Jian Sun,Hai-Tao Wu
Chia seed gum was extracted using high-speed shearing technology and further purified via ethanol precipitation. The composition, structural and rheological properties of crude chia seed gum (CCSG) and purified chia seed gum (PCSG) were evaluated and further compared with twelve commercial polysaccharides (agar, xanthan gum , κ-/ι-/λ-carrageenan, guar gum, carboxymethyl cellulose , locust bean gum, pectin, acacia gum, sodium alginate and konjac gum). The extraction yields of CCSG were significantly improved from 1.80% to 6.25% by high-speed shearing for 2.0 min. Compared to CCSG (36.63% and 3.985 × 10 5 g/mol), PCSG had a higher total neutral sugar content (51.85%), lower molecular weight (1.718 × 10 5 g/mol) and looser surface morphology. Furthermore, PCSG and CCSG had different monosaccharide composition. However, both CCSG and PCSG exhibited pseudoplastic fluid behavior, but PCSG had higher viscosity and modulus values than CCSG at the same concentrations. Compared to commercial polysaccharides, PCSG had rheological characteristics similar to those of xanthan gum, with high viscoelasticity and good stability against temperature change. The relaxation time T 2 curves showed that CCSG and PCSG had better water-holding capacity than most commercial polysaccharides. This study provided theoretical guidance for the potential utilization of chia seed gum as a thickening and stabilizing agent in the food industry.
研究领域:
食品科学
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化学工程
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材料科学
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产品关联
DOI
高影响因子
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
·
2024
·
IF 7.7
Linlin Gao,Qiuyue Hu,Xin Gao,Xiaoning Tang,Lincai Peng,Keli Chen,Heng Zhang
Nanocellulose is a kind of renewable natural polymer material with high specific surface area, high crystallinity, and strong mechanical properties. RC nanofibers (RCNFs) have attracted an increasing attention in various applications due to their high aspect ratio and good flexibility. Herein, a novel and facile strategy for RCNFs preparation with high-speed shear induced in urea solution through “bottom-up” approach was proposed in this work. Results indicated that the average diameter and yield of RCNF was approach to 136.67 nm and 53.3 %, respectively. Meanwhile, due to the regular orientation RC chains and arrangement micro-morphology, RCNFs exhibited high crystallinity, strong mechanical properties, stable thermal degradation performance, and excellent UV resistance. In this study, a novel regeneration process with high-speed shear induced was developed to produce RCNFs with excellent properties. This study paved a strategy for future low-energy production of nanofibers and high value-added conversion applications of agricultural waste.
研究领域:
材料科学
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生物质资源利用
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产品关联
DOI
PubMed
高影响因子
SEPARATION AND PURIFICATION TECHNOLOGY
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2025
·
IF 9
Xiaoran Zhang,Linlin Gao,Qiuyue Hu,Xingyu Wang,Xin Gao,Lincai Peng,Keli Chen,Heng Zhang
Utilizing environmentally friendly bio-adsorbents with ultra-high adsorption capacities to remove antibiotics from aqueous environments is a potential strategy in addressing global water pollution. Herein, a novel carboxyl-functionalised nanocellulose adsorbent (H-BTCA-RC) was successfully prepared from agricultural waste-derived regenerated cellulose (H-RC) and 1,2,3,4-butanetetracarboxylic acid (BTCA). The prepared H-BTCA-RC was used to evaluate its adsorptive performance for removing typical antibiotic ciprofloxacin (CIP) from water. Its efficiency was optimized based on factors such as pH, contact time, initial antibiotic concentration, temperature, and adsorbent dosage. Notably, the dispersion of H-RC chains among a matrix of encasing urea molecules with high-speed shear induced facilitates the development of well-ordered micro- and nanostructures inside H-RC, letting to a relatively high compressive strength of 200.5 kPa at 80 % strain. Results suggested that the intricate network composed with micro- and nanoscale H-RC architecture of the fibers functions as a scaffold for adsorbent, enhancing the availability of reactive –OH and increasing the accessibility for pollutants contact. Furthermore, the incorporation of BTCA facilitated the formation of adequate covalent bonds and hydrogen bonding interactions among H-RC fibers, culminating in a denser structural network within the cryogel. The adsorbent exhibited excellent adsorption characteristics of CIP with a removal efficiency of 95.63 % and an adsorption capacity of 300.01 mg/g. Additionally, the adsorbent showed high recyclability, retaining efficacy exceeding 91 % throughout more than ten cycles. This work demonstrates that cellulosic antibiotic adsorbent materials have potential in the utilization of agricultural waste for the efficient extraction of antibiotics from aquatic environments.
研究领域:
环境科学
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材料科学
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生物技术
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产品关联
DOI
高影响因子
JOURNAL OF THE SCIENCE OF FOOD AND AGRICULTURE
·
2024
·
IF 3.3
Xiefei Li,Yupeng Lin,Yumeng Huang,Xin Li,Fengping An,Hongbo Song,Qun Huang
BACKGROUND Pectin extracted by high-speed shearing from passion fruit peel (HSSP) is a potentially excellent wall material for encapsulating curcumin, which has multiple advantages over pectin prepared by heated water extraction. HSSP was used to fabricate complex nanoparticles of zein–sodium caseinate–pectin for encapsulation of curcumin in this study. The influence of heating on the physicochemical properties of the composite nanoparticles was also investigated, as well as the effect of composite nanoparticles on the encapsulation efficiency, antioxidant activity and release characteristics of curcumin. RESULTS The nanoparticles were formed through electrostatic interactions, hydrogen bonds and hydrophobic interactions between the proteins and HSSP. A temperature of 50 °C was more favorable for generating compact and small-sized nanoparticles, which could effectively improve the encapsulation efficiency and functional properties. Moreover, compared to other pectin used in the study, the nanoparticles prepared with HSSP showed the best functionality with a particle size of 234.28 ± 0.85 nm, encapsulation rate of 90.22 ± 0.54%, free radical scavenging rate of 78.97% and strongest protective capacity in simulated gastric fluid and intestinal release effect. CONCLUSION Zein–sodium caseinate–HSSP is effective for encapsulating and delivering hydrophobic bioactive substances such as curcumin, which has potential applications in the functional food and pharmaceutical industries. © 2024 Society of Chemical Industry.
研究领域:
食品科学
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纳米技术
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药学
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材料科学
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DOI
PubMed
高影响因子
POWDER TECHNOLOGY
·
2025
·
IF 4.6
Wei Wang,Jia Liu,Yapeng Jia,Jun Yin,Lianzhou Zhang,Xuefei Zhou,Junpeng Li,Jianqiang Wang,Guoping Yang,Wenyan Zhang
Silver powder, as a pivotal material in electronics and new energy applications, critically depends on its tapped density and sintering activity. This study systematically optimizes the physical properties and sintering performance of micron silver powder through a synergistic surface modification strategy integrating jet milling classification and high-speed shear shaping. Results demonstrate that the modified silver powder exhibits a 40–45 % enhancement in tapped density (5.91 g/cm 3 ), a 50–56 % increase in apparent density (4.01 g/cm 3 ), a narrowed particle size distribution span (reduced from 2.93 to 0.52), and significantly improved flowability (angle of repose: 28.97°). The conductive silver paste formulated with modified powder achieves optimized rheological properties, including a 41.8 % higher 17-s recovery rate (84.5 %) and a 79.08 % reduction in static viscosity. Sintering experiments revealed that the modified silver powder achieved a maximum reduction in sintering temperature of 100 °C, with a relative density exceeding 97.3 % at 650 °C, with grain boundary diffusion and defect density modulation identified as the core mechanisms for densification. This work elucidates the synergistic regulatory mechanisms of surface modification on the sintering behavior of silver powders, aligning with the principles of tapped density enhancement and low-temperature sintering.
研究领域:
材料科学
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电子材料
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粉末冶金
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表面工程
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纳米技术
✓ 已验证
产品关联
DOI
高影响因子
FOOD HYDROCOLLOIDS
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2020
·
IF 7.053
Yupeng Lin,Fengping An,Hong He,Fang Geng,Hongbo Song,Qun Huang
In this study, the structural and rheological properties of pectin extracted by high-speed shearing (HSS–P) at 50 °C ultrapure water and conventional heating methods (CE50-P and CE90-P) from passion fruit ( Passiflora edulis f. flavicarpa ) peel were evaluated and compared. The HSS-P has loose, honeycomb-like surface morphology, lower molecular weight and higher polydispersity index compared to CE50-P and CE90-P. Monosaccharide composition indicated that HSS-P had more side chains, which were caused by its highly branched molecular structure, short main chains and a high molar ratio of RG-I in the molecular configuration. FTIR spectra showed that high-speed shearing led to a decrease in the linearity of the main chain of the pectin molecule. NMR spectra indicated that the molecular structure of HSS-P was a linear chain of homogalacturonan (HG) inserted into rhamnogalacturonan I (RG-I) possibly with arabinans and galactans as the principal side chains. Furthermore, the effects of pectin concentration, sucrose , CaCl 2 and pH on the rheological properties of different pectins were investigated. All pectin exhibited pseudoplastic fluid behavior at different environmental conditions. The HSS-P samples showed the greatest increase in the apparent viscosity and viscoelasticity in the presence of sucrose (60%–100%) and CaCl 2 (0.1–0.2 g/100 mL), pH changes and increased pectin concentration. The HSS-P was easily combined with the co-solutes and its viscoelasticity showed stronger stability under temperature changes. In conclusion, the high-speed shearing results in a unique molecular structure that contributed to the excellent rheological properties of pectin. Thus providing theoretical guidance for further application of high-speed shearing in extracting pectin.
研究领域:
食品科学
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化学工程
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材料科学
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产品关联
DOI
高影响因子
Polymers
·
2023
·Vol. 15
·期 2
·356
·
IF 5
Fengfeng Zhao,Hui Quan,Shijun Zhang,Yihui Xu,Zheng Zhou,Guangxin Chen,Qifang Li
Graphene conductive inks have attracted significant attention in recent years due to their high conductivity, corrosion resistance, and environmentally friendly nature. However, the dispersion of graphene in aqueous solution is still challenging. In this work, we synthesized an amphiphilic graft copolymer, polyvinyl alcohol-g-polyaniline (PVA-g-PANI), and studied the graphene dispersion prepared with the graft copolymer by high-speed shear dispersion. The amphiphilic graft copolymer can be used as a stabilizer and adhesive agent in graphene dispersion. Given the steric hindrance of the graft copolymer, the stability of graphene dispersion is improved by decreasing the probability of π–π stacking. PVA-g-PANI has a better stability on graphene dispersion than carboxymethylcellulose sodium (CMC-Na) and a mixture of PVA and PANI. The graft copolymer has only a slight effect on the conductivity of graphene dispersion due to the existence of conductive PANI, which is beneficial for preparing the graphene dispersion with good conductivity and adhesion. Graphene dispersion is well-adapted to screen printing and is very stable with regard to the sheet resistance bending cycle.Keywords:graphene;conductive inks;graft copolymer;aqueous solution
研究领域:
材料科学
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化学工程
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纳米技术
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产品关联
DOI
PubMed
高影响因子
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
·
2022
·
IF 8.025
Yi Zhang,Wenjie Wang,Zongju Chen,Huihong Shi,Wenzhe Zhang,Xiucheng Zhang,Xin Hua
Artificial bone materials are in great need due to a lot of bone injuries. Herein, collagen/nano-hydroxyapatite (Col/nHA, C-H) composite nanospheres were obtained by in-situ mineralization, and poly L-lactic acid/collagen/nano-hydroxyapatite (PLLA/Col/nHA, P-C-H) was further prepared by high-speed shear emulsification method. The interfacial properties and structure between PLLA and nHA are regulated by the adhesive property of Col. The morphology, structure and properties of P-C-H microsphere were characterized in detail by scanning electron microscopy (SEM), transmission electron microscopy (TEM), Brunauer-Emmett-Teller (BET) and simulated degradation of PBS in vitro. The results show that C-H is uniformly distributed in P-C-H microspheres, and a mesoporous material with a “pomegranate” structure and a particle size of 5–30 μm is self-assembled based on C-H multiple composite microspheres. It is beneficial to the sustained-release degradation of P-C-H and the retention/release of Ca 2+ . The 60-day PBS degradation shows that PLLA delays the degradation of nHA, making the degradation rate of P-C-H basically consist with the human bone healing cycle. The co-culture of P-C-H with MC3T3-E1 cells shows that P-C-H has high biocompatibility and no cytotoxicity. The cell viability is higher than 100 % in 72 h, indicating P-C-H has a proliferation effect on cell growth. Alkaline phosphatase and quantitative real-time PCR test show a positive promotion of P-C-H in cell proliferation and differentiation. The multi-layered P-C-H microspheres have an application potential in bone tissue engineering.
研究领域:
材料科学
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生物医学工程
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生物材料
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组织工程
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产品关联
DOI
PubMed
高影响因子
INTERNATIONAL JOURNAL OF FOOD SCIENCE AND TECHNOLOGY
·
2018
·Vol. 54
·期 3
·844-853
·
IF 2.383
Mo Yang,Liangru Wu,Chongjiang Cao,Suya Wang,Dongmei Zhang
Summary With the increase in global welfare, metabolic syndrome-related diseases seriously disrupt our quality of life. Balanced diet with low calories, low glycaemic index, and high dietary fibre such as bamboo shoot fibre is needed. Functional properties of dietary fibre can be improved by processing methods. Therefore, we compared the effect of three processing methods (high-speed shear dispersing, enzyme treatment and combined treatment) on the characteristics and functions of bamboo shoot fibres. Combined treatment resulted in high SDF content (10.15%), adsorption capacity of glucose (4.45–18.18 mmol g −1 ), nitrite ion (505.49 μg g −1 [pH 2.0]), and cholesterol (333.72 μg g −1 [pH 2.0]). FTIR revealed that hydroxyl groups, sugar methylene and benzene rings of aromatic compounds existed in the treated bamboo shoots. The particle size (D 50 ) decreased from 383.90 to 30.65 μm. Honeycomb-like structure was also observed through SEM. Thus, proper processing of bamboo shoot fibres can improve their functions as food ingredients.
研究领域:
食品科学
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营养学
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化学工程
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产品关联
DOI
高影响因子
Arabian Journal of Chemistry
·
2023
·
IF 6
Xin-Yang Jiang,Cai-Wei Wang,Jun Zhang,Pei-Pei Xu,Yi-Ting Xue,Qian Wang
The tea of fig ( Ficus carica L. ) has long been used as a medicine in China due to its excellent effects on hemorrhoids, damp heat diarrhea and other diseases. The present study was designed to evaluate the impacts of different extraction methods, including hot water extraction (HWE), microwave assisted extraction (MAE), ultrasound assisted extraction (UAE), ultrasound assisted enzymatic extraction (UAEE), ultrasound-microwave assisted extraction (UMAE), alkali extraction (AE) and high-speed shearing homogeneous extraction (HSHE), on physicochemical characteristics and bioactivities of polysaccharide from fig leaves (FLPs). Results indicated that there were great differences between the structure and activity of FLPs prepared by seven methods. Among them, FLPs extracted by UAE (FLPs-UAE) showed the strongest antioxidant and hypoglycemic activities due to its higher Mw, total polysaccharide content (60.62±3.06%) and Glucosamine (GlcN) content (7.68%). In addition, FLPs extracted by HWE possessed more total polysaccharide content (62.03±0.70%), total phenolic compounds content (13.55 ± 0.02 %) and GlcN content (5.78%) contributed to its strong antioxidant activity and the inhibition on α-amylase and α-glucosidase, which was second to FLPs-UAE. These finding suggested that UAE and HWE, especially UAE, were good ways to extract FLPs with high antioxidant and anti-diabetic activities, which provide foundations for choosing the suitable extraction strategy to prepare FLPs with desired bioactivities and promoting the application of FLPs in function food industries.
研究领域:
药理学
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食品科学
·
生物化学
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产品关联
DOI
高影响因子
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
·
2018
·
IF 3.909
Meirong Bai,Jing He,Liangfa Kang,Jun Nie,Ruixue Yin
Individual insulin therapy considering the heterogeneity of insulin resistance between patients may bring more benefits than conventional therapy. Therefore, in glucose-responsive insulin delivery systems, more attention should be paid on further regulation of insulin release to meet individual requirements. Our study shows the feasibility of using a photo-crosslinkable shell layer to regulate basal and bolus insulin release from glucose-responsive Con A-polysaccharides network. Core-shell microspheres were fabricated through a two-step high-speed shear-emulsification method. The morphology was observed by SEM and TEM, and the core-shell structure was confirmed by the differences in chemical composition between core-shell and single-layer microspheres obtained from XPS and IR analysis. In vitro insulin release test revealed that the core-shell microspheres with or without light-irradiation could maintain corresponding bolus and basal insulin release in response to different glucose concentration but enable much lower burst release compared with single-layer microspheres without shell. Meanwhile, insulin release rate and amount could be further decreased upon light-irradiation owing to the photo-induced cycloaddition of cinnamate pendant groups of the shell material. The released insulin was proved to remain active according to fluorescence and circular dichroism analysis. The HDF cell viability assessment suggested that the core-shell microspheres possessed no in vitro cytotoxicity.
研究领域:
药学
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材料科学
·
生物医学工程
·
药物递送系统
✓ 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）