FOOD HYDROCOLLOIDS
·
2023
·
IF 10.7
Guangxin Feng,Gaoshang Wang,Qing Li,Chuanwu Han,Dong Wei,Jian Guo,Zhili Wan,Jinmei Wang,Xiaoquan Yang
3D printing has been applied to create nutritious foods with tailored textures for the elderly. However, the edible materials that possess the elastoplastic properties and shear-thinning behavior required for direct-write 3D printing are limited. In this study, we developed a simple approach to fabricate Spirulina emulsion gels as edible 3D printable material by exploiting depletion attraction between emulsion droplets. By controlling the volume ratio of continuous and oil phases, mixing highly viscous Spirulina slurry and vegetable oil could form self-standing oil-in-water emulsion gels with elastoplastic rheological properties. Also, adding food polysaccharides into the continuous phase could act as depletants to drive the formation of emulsion gels. Auto-fluorescence spectroscopy and microscopy were employed to characterize the interfacial protein compositions of the emulsion, showing that phycobilisome (PBS) particles might play a dominant role in the formation of Spirulina emulsions. The depletion attraction could drive the adsorption of PBS particles onto the droplet interface, and the particle-armored droplets in the dispersed phase connected into a percolating droplet cluster, resulting in arrested dynamics and gelation . Overall, this novel approach can be applied by exploiting depletion attraction and opens up possibilities for using high-solids viscous food slurries to produce personalized 3D-printed foods.
研究领域:
食品科学
·
生物物理学
·
材料科学
✓ 已验证
产品关联
DOI
高影响因子
FOOD HYDROCOLLOIDS
·
2024
·
IF 11
Chuanwu Han,Guangxin Feng,Shouwei Yin,Gaoshang Wang,Jinmei Wang,Zhili Wan,Jian Guo,Xiaoquan Yang
The potential applications of emulsion systems prepared from solid particles are limitless across various fields. The emulsion, also known as Pickering emulsion, is constrained by the properties of the particles. An emulsion system prepared directly from unmodified, hydrophilic, natural starch granules was reported in the study. While the microstructure of this emulsion resembled that of Pickering emulsions, its formation mechanism was entirely different. The formation of the emulsion was governed by depletion attraction between hydrophilic polymers (Carboxymethyl cellulose, CMC) and amaranth starch granules. The microstructure and interfacial results revealed that the adsorption of starch granules at the oil-water interface was facilitated by depletion attraction induced by CMC, while their desorption was inhibited. Stability was maintained even at high oil volume fractions of up to 70%. The strength of depletion attraction in the emulsion could be controlled by varying the concentration of starch granules (3–7 w/v%), CMC (0.5–1.5 wt%), and the molecular weight of CMC, thus adjusting the microstructure and rheological properties of the emulsion. This technique could be widely applied to nature food particle, offering a new avenue for designing and manufacturing stable edible emulsion systems.
研究领域:
食品科学
·
胶体化学
✓ 已验证
产品关联
DOI
高影响因子
Algal Research-Biomass Biofuels and Bioproducts
·
2022
·
IF 5.276
Hangjun Zhang,Xizi Li,Dexin Wu,Bingzhi Yu,Shihuan Lu,Jiajun Wang,Jiafeng Ding
The development of safe and efficient materials to remove harmful algae is continuing to be a major challenge in controlling cyanobacterial blooms in eutrophication waters. Herein, we present a novel strategy that combines Zinc oxide (ZnO) with carbon nitride composites to efficiently collect the intact Microcystis aeruginosa cells. The influence of different dosages of g-C 3 N 4 precursors were assessed and the synthesized catalysts were characterized. The results revealed that 93.0 % of algae cells were removed by the ZnO/CN (2:1) system within 10 min at a dose of 4.0 g L −1 . Regardless of the variation in initial cell density, the final removal efficiency reached >90.0 %. The integrity of the algal cell membrane was observed by K + release and intracellular organic matter such as MC-LR during the removal process, which were further verified by SEM images. The Zeta potential values indicated that the improved effectiveness may be attributed to the electrostatic attraction and coagulation by ZnO/CN. The removal mechanism of ZnO/CN was revealed through charge neutralizing flocculation and the different types of flocculants were compared. The present work provides a new insight in using ZnO nanoparticles modified carbon-based composites in treating cyanobacterial blooms.
研究领域:
环境科学
·
材料科学
·
水生生态学
✓ 已验证
产品关联
DOI
高影响因子
FOOD HYDROCOLLOIDS
·
2022
·
IF 11.504
Gao-Shang Wang,Hong-Yu Chen,Li-Juan Wang,Yuan Zou,Zhi-Li Wan,Xiao-Quan Yang
Edible oleogels have gained popularity as an approach for formulating food products, profiting from improving nutritional profiles related to health-related concerns, and playing an essential role in food processing. Protein oleogels provide an additional opportunity to load and deliver a high proportion of natural macronutrient in lipid-based food products. However, structuring oleogels with proteins directly were rarely reported, which has greatly limited their practical applications. Herein, we proposed a simple and robust method for structuring protein oleogels. By taking advantage of the improved interparticle cohesion through adding a much small amount of water (e.g., 2%) dispersed by ball milling, a space-spanning fractal network of engineered colloidal protein nanoparticles was formed, allowing for physically trapping the liquid oil into a self-standing gel-like system. Rheology and confocal laser microscopy imaging were adopted to investigate the viscoelasticity and microstructure of the resulting oleogels, showing that these capillary protein oleogels can be designed and fabricated with tunable properties upon water addition. Meanwhile, protein oleogels can be successfully formed by this approach, varying from proteins with different wettability, as well as oils differing in polarity. Overall, our findings raise the possibility of structuring protein oleogels with high operability and easy scale-up in practical applications.
研究领域:
食品科学
·
生物物理学
✓ 已验证
产品关联
DOI
高影响因子
ACS Applied Materials & Interfaces
·
2020
·
IF 8.758
Lena Du,Ningfei Sun,Ziyu Chen,Yuanyuan Li,Xiaoduo Liu,Xiaolan Zhong,Xiaochun Wu,Yong Xie,Qian Liu
Device-scale, uniform, and controllable deposition of nanoparticles on various substrates is fundamentally important not only for the fabrication of thin-film devices but also for the large sample statistics of single-particle performances. However, it is challenging to obtain such predefined depositions using a simple and efficient method. Here, we present a novel strategy for obtaining the uniform and particle density/spacing-tunable deposition of nanorods on a linker-free substrate. The deposition is driven by the tailored particle–substrate depletion attraction owing to the size-matched design of the substrate roughness and the nanorod diameter. Both gold nanorods and upconversion nanorods were applied to demonstrate the generality of the method. The high particle density of more than 21 per μm2 and correspondingly the small particle spacing of fewer than 0.3 μm were achieved on a scalable substrate template. On this basis, orientational ordering and pattern-selective deposition of nanorods were realized by controlling the liquid flow rate and employing the substrate with patterned roughness areas, respectively. With the roughness-directed density-tunable depositions of nanorods integrated onto a single platform, multiplexed gold nanorod assembly and programmable surface-enhanced Raman mapping were achieved, with a promising prospect in information encoding by using the Raman signals as the translation units. The thermal stability and related transition temperature of about 160 °C of gold nanorods were also revealed as an application of single-particle statistics. This practical method could be extended to wide ranges of potential applications in plasmonic coupling devices, cryptography, or single-particle performance statistics with the feature of the high-throughput, low-cost, and scalable fabrication.
研究领域:
材料科学
·
纳米技术
·
光学
✓ 已验证
DOI
高影响因子
INSECT MOLECULAR BIOLOGY
·
2017
·Vol. 26
·期 5
·642-653
·
IF 2.844
J. Luo,Z. Li,C. Ma,Z. Zhang,J. J. Hull,C. Lei,S. Jin,L. Chen
Insect sex pheromones (SPs) are central to mate-finding behaviour, and play an essential role in the survival and reproduction of organisms. Understanding the roles, biosynthetic pathways and evolution of insect chemical communication systems has been an exciting challenge for biologists. Compared with Lepidoptera, little is known about the mechanisms underlying pheromone biosynthesis in Hemiptera. In this study, we isolated and characterized two new desaturase-like genes, termed Asutdes1 and Asutdes2 , from Adelphocoris suturalis , an important agricultural pest in China. Although the two genes encode an identical protein, Southern blot analysis revealed that they are duplicated genes. The Asutdes2 transcript is more abundant than Asutdes1 in the tissues tested, in particular the metathoracic scent gland and fat body. Silencing Asutdes expression in females by injecting double-stranded RNA ( dsAsutdes ) against a portion of the coding sequence shared by the two genes enhanced the production of (E)-4-oxo-2-hexenal, a component of the A. suturalis SP blend, and dramatically suppressed the sexual attractiveness of A. suturalis females. We conclude that dsAsutdes is associated with the SP biosynthetic pathway in A. suturalis .
研究领域:
昆虫学
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生物化学
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分子生物学
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产品关联
DOI
PubMed
高影响因子
FOOD CHEMISTRY
·
2022
·
IF 9.231
Siying Che,Linlin Yin,Ming Chen,Yao Fan,Anni Xu,Chunsong Zhou,Haiyan Fu,Yuanbin She
Herein, a novel ionic fluorescent probe for mercury(II) detection is presented consisting of a functional quinoline-based IL. Interestingly, the probe displayed high sensitivity (0.8 nM) and selectivity through the regulation function of electrostatic attraction, where its performance was significantly superior to that of quinoline probes without negative charge. Furthermore, the probe was found to exhibit two different fluorescent signals and colorimetric signals in the presence of different concentrations of mercury(II), which was consistent with the reaction mechanisms of the generation of large conjugated systems and the formation of anion-mercury(II) complexes. Moreover, this probe could be further loaded on a simple filter paper to serve as a visual paper sensor due to its adequate response time of less than 5 s. This regulation function strategy of electrostatic attraction has excellent potential for use in the precise detection of targeted analytes in real complex samples with improved accuracy and selectivity.
研究领域:
分析化学
·
环境科学
·
材料科学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
FOOD CHEMISTRY
·
2024
·
IF 8.5
Jingjie Hou,Guixin Tan,Afeng Wei,Shan Gao,Huajiang Zhang,Wentao Zhang,Yujia Liu,Rui Zhao,Yunze Ma
In this study, a carboxymethylcellulose (CMC) induced depletion attraction was developed to stabilize high internal phase Pickering emulsions (HIPPEs) as age-friendly 3D printing inks. The results demonstrated that depletion force induced the adsorption of yolk particles at the droplet interface and the formation of osmotic droplet clusters, thereby increasing the stability of HIPPEs. In addition, the rheological properties and nutrient delivery properties of HIPPEs could be adjusted by the mass ratio of yolk/CMC. The HIPPEs stabilized at yolk/CMC mass ratio 20:7.5 showed optimal printability, viscoelastic, structural recovery, and swallowability. HIPPEs have been applied to 3D printing, International Dysphagia Dietary Standardization Initiative (IDDSI) test, and in vitro digestive simulation in the elderly, indicating their attractive appearance, safe swallowability, and enhanced bioaccessibility of β-carotene. Our work provides new ideas for developing age-friendly foods with plasticity and nutrient delivery capacity by depletion attraction stabilizing HIPPEs.
研究领域:
食品科学
·
材料科学
·
老年医学
·
营养学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
FOOD HYDROCOLLOIDS
·
2024
·
IF 11
Ya Li,Liwei Mao,Lifeng Wang,Wenfei Xiong
The effects of electrostatic repulsion (pH6.5) and attraction (pH4.6) between biopolymers on the physicochemical and foam properties of ovalbumin (OVA)/carboxymethylcellulose (CMC) mixtures subjected to mild heat treatment (60–75 °C) were comparatively investigated. It was found that electrostatic binding between OVA and CMC at pH 4.6 resulted in an increase in the peak temperature of thermal denaturation (T d ) of OVA from 71.3 °C to 74.4 °C, while no significant effect was observed at pH 6.5. Thus, 60 and 65 °C below T d were chosen to further investigate the effects of heating on the degree of thermal aggregation, protein conformation and foam properties of OVA/CMC mixtures. Confocal laser scanning microscopy observations and rheological results indicated that electrostatic binding between OVA and CMC at pH 4.6 significantly reduced the degree of protein thermal aggregation, while on the contrary, electrostatic repulsion between proteins and polysaccharides at pH 6.5 promoted OVA thermal aggregation. Raman spectroscopic characterisation indicated that mild heat treatment mainly led to a change in the microenvironment polarity of OVA tyrosine and tryptophan residues, as well as an increase in the content of random coil in the amide III band irrespective of pH. Moreover, after heating at 65 °C for 20 min, The foaming ability of the OVA/CMC mixtures at pH 6.5 and 4.6 increased by approximately 32% and 36% respectively compared to pure OVA. These findings have a positive value for enhancing the heat sterilisation strength of egg white proteins.
研究领域:
食品科学
·
物理化学
·
胶体科学
✓ 已验证
产品关联
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2022
·
IF 16.744
Yonggang Lei,Kim Hoong Ng,Yucheng Zhu,Yingzhen Zhang,Zengxing Li,Shen Xu,Jianying Huang,Jun Hu,Zhong Chen,Weilong Cai,Yuekun Lai
Seeking an efficient and stable cocatalyst is of importance for semiconductor-based photocatalytic water splitting to produce hydrogen. In this sense, Mo-activation of VC for better cocatalytic properties was proposed for the first time, aiming to attain improved hydrogen generation of CdS . Our novel, yet facile physical preparation method permits intimate coupling of Mo-activated VC cocatalyst to CdS (through electrostatic attraction force), thereby promises drastic activity enhancement for hydrogen generation. Results indicate the best VC-activating competency of Mo against other transition metals (Co, Fe, Ni, Zn and Cu), which induces highest H 2 productivity of CdS after modifying with Mo-activated VC. Under optimum setting, CdS/Mo(0.38)-VC(5 wt%) manifested highest photocatalytic hydrogen production rate of 2267 μmol h −1 g −1 , associated to 300 % and 440 % improvement as compared to that of CdS/VC(5 wt%) and pure CdS, respectively. Such activity also outperformed those that yielded by MoS x - or noble metals(Pt, Au or Ag)-co-catalyzed CdS, attributed to the promoted interfacial charges transfer and lowered overpotential of CdS/Mo(0.38)-VC(5 wt%) in hydrogen generation. Correspondingly, high apparent hydrogen production quantum efficiency of 4.3 % was also recorded by the same photocatalyst at 420 nm. In term of stability test, CdS/Mo(0.38)-VC(5 wt%) manifested excellent longevity in 24 h continuous photoreaction and fair recyclability over five consecutive photoreaction cycles. This work provides a new insight to cocatalysts design and synthesis, thereby realizing economic alternatives to precious metal (Pt, Au, Ag) in solar-derived H 2 production.
研究领域:
材料科学
·
化学工程
·
催化
·
可再生能源
✓ 已验证
DOI
高影响因子
REACTIVE & FUNCTIONAL POLYMERS
·
2020
·
IF 3.333
Yong Dong,Liqin Cao,Yongxia Yang,Xiujuan Wu,Jide Wang
Removing dyes and antibiotics from wastewater remains the current requirement for a global health problem. The ionic macroporous adsorbent is an efficient solution to this problem. Herein, a novel sulfonated TiO 2 /poly(acrylamide- co -2-acrylamido-2-methylpropanesulfonic acid) [TiO 2 /P(AM- co -AMPS)] macroporous composite monolith was first prepared by copolymerization of AM and AMPS in m TiO 2 -costabilized CO 2 -in-water Pickering high internal phase emulsions (HIPEs). The composite monoliths were characterized using XRD , SEM, confocal laser scanning microscopy , EDS mapping, FTIR, TGA , and mercury injection methods. The mechanical properties of the TiO 2 /P(AM- co -AMPS) HIPE were also evaluated. The void diameter could be adjusted by changing the density of carbon dioxide and the amount of m TiO 2 . The equilibrium swelling ratios of TiO 2 /P(AM- co -AMPS) with different contents of crosslinking agent of 2, 5, and 10 wt% (AM+AMPS) were 93, 37, and 19 g/g, respectively. TiO 2 /P(AM- co -AMPS) was used to remove methylene blue (MB) and tetracycline (TC) for evaluating the adsorptive properties of the composite monoliths. Results indicated that the main adsorption driving force was the electrostatic attraction between −SO 3 − and MB/TC. Adsorption experiments were conducted using a batch technique. The adsorption capacities of TiO 2 /P(AM- co -AMPS) for MB and TC were 1660 and 1128 mg/g in a wide pH range of 3–10. The equilibrium saturation point could be reached after 90 min for MB and 360 min for TC. Thereafter, the removal of MB and TC by gravity-driven separation was presented. The breakthrough curve and reuse evaluation for the removal of MB/TC were also studied in detail.
研究领域:
环境科学
·
材料科学
·
化学工程
✓ 已验证
产品关联
DOI
高影响因子
FOOD HYDROCOLLOIDS
·
2024
·
IF 11
Jianming Tao,Qian Ma,Zehua Zhang,Zicong Hu,Lin Lei,Guohua Zhao
Sodium caseinate (Cas) is an attractive candidate for food emulsion formulation due to its surface-active properties as well as the ability to prevent the oxidation of encapsulation oils. However, the emulsions underwent destabilization near its isoelectric point ( pI, around pH 4.8) due to the lack of enough electronic repulsion. To overcome the drawback, colloidal lignin particles (CLPs) fabricated from dietary fiber with superior negative repulsion and abundant surface active sites will be inspiring as the patch of Cas-based emulsion. This study systemically explored the modified effect of varied CLPs concentrations in the Cas-based emulsions prepared at pH 4.8. Due to hydrophobic attractions and hydrogen bonds between protein and CLPs, the CLPs significantly increased the negative charge and viscosity of composites while reduced surface hydrophobicity of Cas. Thus, in contrast to Cas, Cas/CLPs complex can fabricate a more elastic oil-water interfacial film, accompanying with a reduced droplet size (52–136 μm). Despite the inhibition of Cas adsorption at interfacial film, Cas/CLPs complex increase the stability of emulsion mainly by increasing electrostatic repulsion, enhancing film elasticity, and thickening continuous phase. Emulsions fabricated with Cas/CLPs complex effectively protected polyunsaturated fatty acids from deterioration, with the lowest levels of hydroperoxide and malondialdehyde observed in Cas/1.00 %CLPs emulsion. This study uncovered the facts behind the non-covalent interactions of Cas and lignin and proposed a novel strategy to stabilize Cas-based emulsions in acidic conditions.
研究领域:
食品科学
·
化学工程
·
材料科学
✓ 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）