LANGMUIR
·
2024
·
IF 3.7
Longyu Liu,Xueqiu Liu,Xinyi Lu,Xinmiao Guo,Xi Chen,Weiping Li,Xiaobin Yu,Zhiqiang Cheng
Matrine (MT) is a kind of alkaloid extracted from Sophora and is a promising substitute for chemical nematicides and botanical pesticides. The present study utilized sodium alginate (SA), zeolite imidazole salt skeleton (ZIF), and MT as raw materials to prepare a pH-response-release nematicide through the electrostatic spray technique. Zinc metal–organic framework (ZIF-8) was initially synthesized, followed by the successful loading of MT. Subsequently, the electrostatic spray process was employed to encapsulate it in SA, resulting in the formation of MT/ZIF-8@SA microcapsules. The efficiency of encapsulation and drug loadings can reach 79.93 and 26.83%, respectively. Soybean cyst nematode (SCN) is one of the important pests that harm crops; acetic acid produced by plant roots and CO2 produced by root respiration causing a decrease in the pH of the surrounding environment, which is most attractive to the SCN when the pH is between 4.5 and 5.4. MT/ZIF-8@SA releases the loaded MT in response to acetic acid produced by roots and acidic oxides produced by root respiration. The rate of release was 37.67% higher at pH 5.25 compared with pH 8.60. The control efficiency can reach 89.08% under greenhouse conditions. The above results demonstrate that the prepared MT/ZIF-8@SA not only exhibited excellent efficacy but also demonstrated a pH-responsive release of the nematicide.
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INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
·
2024
·
IF 7.7
Haojie Shi,Xinyao Zhang,Shun Chen,Lingxin He,Wei Wang,Siqing Shao,Guofang Qiu,Wenwen Guo
As an important source of green cleaning flame retardants , bio-based materials have been widely studied by researchers. However, the development of efficient biobased flame retardants and convenient finishing methods was of great significance for the functional finishing of materials. Herein, a convenient and efficient flame retardant cotton fabric was prepared via layer by layer self-assembly (LbL) by alternating precipitation of a novel bio-based flame retardant phosphorylated sodium alginate (PSA) and alkylammonium functionalized siloxane (A-POSS). The effect of coating number on flame retardancy and thermal properties of coated cotton fabric was systematically studied. Thermogravimetric analysis (TGA) results showed that residual char contents of AP/PS-15BL under air and N 2 atmospheres increased by 252.0% and 225.2%, respectively, compared with control cotton. In vertical flammability tests, both the AP/PS-10BL and AP/PS-15BL showed self-extinguishing behavior and successfully passed the UL-94 V-0 rating. More importantly, the LOI value of AP/PS-15BL was significantly increased to 35.0% from 20.0% of pure cotton fabric. Additionally, coated samples showed good mechanical properties and washable resistance. In CONE test, the peak heat release rate (PHRR) and total heat release rate (THR) of AP/PS-15BL decreased by 89.3% and 49.3% respectively, compared with control cotton. Therefore, this green and convenient flame-retardant finishing method has great application potential in the multi-functional finishing of cotton fabrics.
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INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
·
2025
·
IF 8.5
Jun Li,Pingcong Lv,Hongli Ou,Xianling Yang,Youyi Chang,Yanli Li,Qian Zhou,Yimin Shan,Xianggui Chen,Xiaoqi Yu
The slight acidic pH changes during food storage and transportation are often difficult to detect in a timely and accurate manner. There is also an urgent need to establish a portable, accurate, and low interference detection method for real-time monitoring of the quality changes of fresh juice that already has its own color. In this paper, a self-ratiometric fluorescent sensor (DCCA/SA bead) was prepared by combining a modified coumarin and sodium alginate (SA), and was used for the extreme pH monitoring of fluorescent by naked eye colorimetry. The derivative of natural active ingredient coumarin (DCCA) exhibited excellent self-fluorescence properties in the ratio of orange red (630 nm) to blue-green (480 nm) under the excitation, and exhibited good linear changes at extreme acid pH range (2.5–5.0), biocompatibility high sensitivity, and anti-interference ability. Based on the multiple interactions between DCCA and SA, DCCA/SA bead could be used for the monitoring small pH changes of fruit juice and storage stage in a fast response time. In addition, analyzing the RGB values of DCCA/SA bead images under ultraviolet light also successfully quantitatively determined changes in pH values. These results indicated that the self-ratiometric fluorescent hydrogel sensor had great user convenience and point-of-care testing (POCT) to monitor extreme acidic pH for freshness of foods.
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INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
·
2025
·
IF 8.5
Yabin Lin,Qixuan Guo,Qing Liu,Weikang Wang,Ang Lv,Luping Zhang,Liming Li,Jianqing Gao,Fei Huang
In the early stage of spinal cord injury (SCI), excessive reactive oxygen species (ROS) accumulate at the injury site to establish a microenvironment favoring complex secondary injuries, including cavity formation, and impacting the distal lumbosacral spinal cord. Currently, no definitive clinical treatment is available for SCI. Here, we created an responsive and injectable hydrogel composite (GEL-EXO) by modifying and cross-linking biological macromolecules sodium alginate (SA) and gelatin in the form of embedded exosomes. This GEL-EXO composite integrated the bioactivity of exosomes with the gap-filling function of hydrogels. Our experiments demonstrated that the composite could simultaneously repair spinal cord tissues at the injury site and the distal lumbosacral region, thereby restoring motor function and reinitiating bladder function. This therapeutic strategy may promise a brand-new holistic intervention for SCI.
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FOOD CHEMISTRY
·
2024
·
IF 8.5
Arif Rashid,Abdul Qayum,Syed Asim Shah Bacha,Qiufang Liang,Yuxuan Liu,Lixin Kang,Zhuzhong Chi,Runhao Chi,Xu Han,John-Nelson Ekumah,Muhammad Safi Ullah Virk,Xiaofeng Ren,Haile Ma
Clove essential oil (CEO) exhibited potent antibacterial efficacy and are obtained from Eugenia caryophyllata tree flower buds. Herein, CEO nanoemulsions were prepared using various concentrations of casein protein treated with ultrasound for different time interval. The study demonstrated that CEO nanoemulsions with 5% casein protein subjected to ultrasound for 10 min displayed the most minimal particle size. The pullulan‑sodium alginate film incorporated with nanoemulsions treated with ultrasound exhibited enhanced physico-mechanical characteristics. Based on the structural analysis, the application of ultrasonic treatment improved intermolecular compatibility and organized molecular structure by strengthening hydrogen bonds . Furthermore, the composite film displayed remarkable efficacy against E. coli and S. aureus as well as longer retention of essential oils. The use of the developed films to protect cherry fruits and mushrooms produced promising results, emphasizing their potential in food packaging applications.
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SEPARATION AND PURIFICATION TECHNOLOGY
·
2025
·
IF 9
Tianzhu Shi,Zhengfeng Xie,Xinliang Mo,Ju Guo,Fuyong Wu,Huajie Xu,Xiangui Wang
To regulate the interlayer spacing, composite membranes with distinct spatial structures were prepared by modifying sodium alginate using three hydrazides with varying carbon chain lengths (AAD, TPDH, and BDD). The layered MXene nanosheets were crosslinked with KH550, and hydrophilic-oleophobic composite membranes were fabricated on PVDF substrates. The membrane prepared with 0.2 vol% KH550 exhibited optimal pollutant rejection performance, achieving >99 % rejection rates for Congo Red (CR) and oil-in-water emulsions, and >96 % for Methylene Blue (MB). Among these, DSA-AAD/MXene featured the smallest interlayer spacing and the lowest pure water flux (957.96 L m -2 h −1 ). Furthermore, the study systematically investigated the effects of pH, salt ion concentration, and suspended substances on membrane performance, demonstrating excellent resistance to acids, alkalis, fouling, and salts. This work underscores the significant potential of novel MXene-based membranes for efficient dye/mixture separation in the textile industry, offering a promising strategy for developing high-performance separation membranes.
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高影响因子
ELECTROCHIMICA ACTA
·
2021
·
IF 6.901
Yi-Yang Hu,Jin-Hai You,Shao-Jian Zhang,Hua Lin,Wen-Feng Ren,Li Deng,Si-Yu Pan,Ling Huang,Yao Zhou,Jun-Tao Li,Shi-Gang Sun
An important strategy to improve energy density of Li-ion batteries is to substitute the traditional graphite anode by Si-based anode which is endowed with ultra-high theoretical specific capacity. However, the commercialization of Si anodes is hindered by its huge volume variation that results in electrode pulverization. In the current study, we fill up the pores of sodium alginate (SA) network with lithiated polyacrylic acid (Li x PAA) to form a cross-linked bicontinuous composite network binder (b-Li 0.5 PAA@SA), in which the pores of the SA skeleton are dominated with the Li 0.5 PAA domains; within such composite the SA and Li 0.5 PAA interlock tightly each other via extensive interfacial ester bonding. The resulting b-Li 0.5 PAA@SA network binder can effectively buffer the volume variation of Si microparticles (m-Si) during repeating cycling and prevent pulverization of the electrode, which is evidenced by a cycling capacity of 2762 mAh g −1 in the 1 st cycle and a retention of 1584 mAh g −1 after 150 cycles. As a comparison, the m-Si electrode with only SA binder suffers from fatal capacity degradation after merely 20 cycles under the same conditions. Moreover, since the Li 0.5 PAA domains are ionic conductive and significantly reduce the porosity of the SA network, the b-Li 0.5 PAA@SA network binder could also enable a stable solid electrolyte interphase (SEI) film and fast electron/ion transfer, leading to an enhanced rate capability of the m-Si anodes.
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JOURNAL OF APPLIED ELECTROCHEMISTRY
·
2020
·Vol. 50
·期 5
·621-630
·
IF 2.384
Wang Yuyang,Zheng Hongtao,Lin Cunguo,Zheng Jiyong,Chen Ye,Wen Qing,Wang Shuang,Xu Haitao,Qi Lijuan
The structure and biocompatibility of anode materials significantly affect the performance of microbial fuel cells (MFCs). A biocompatible polyaniline–sodium alginate (PANI–SA) composite was prepared in situ oxidation polymerization on the 3D porous nitrogen-doped carbon nanotube/sponge (NCNT/S) to construct a high-performance microbial fuel cell in this investigation. The SEM showed that PANI–SA composite anode had a three-dimensional macroporous structure, and nitrogen-doped nanotubes were wound around the sponge skeleton, which had a large specific surface area, provided more places for the attachment and growth of microorganisms. A dual-chamber MFC equipped with a PANI–SA/NCNT/S bioanode to achieve a power density of 4380 mW m −3 , which was much greater than the other MFCs. During the charge–discharge time of 60–90 min, the PANI–SA/NCNT/S bioanode had the highest total charge value of 26,617.86 C m −2 , which was 3.23 times higher than that of NCNT/S (8231.87 C m −2 ). High-throughput sequencing results showed that the PANI–SA/NCNT/S bioanode exhibited high community diversity and selective enrichment of electrogenic bacteria. The excellent performance of the MFC equipped with PANI–SA/NCNT/S anode was attributed to the composite materials, which could be attributed to the large-pore network structure, better biocompatibility, large capacitance and high specific surface area. Graphic abstract
Illustration of the process for the preparation of PANI–SA
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JOURNAL OF MATERIALS SCIENCE
·
2023
·Vol. 58
·期 13
·5756-5772
·
IF 4.5
Liao Minjian,Zhao Yanyan,Pan Yue,Pan Jing,Yao Qin,Zhang Shuting,Zhao Hui,Hu Yang,Zheng Wenxu,Zhou Wuyi,Dong Xianming
Wound dressings play an important role in the wound healing process. For the shortcomings of traditional wound dressings, hydrogel wound dressing with high strength and high water content is a new ideal wound dressing. In this study, polyvinyl alcohol and sodium alginate were selected as raw materials to form the first layer of network structure by physical cross-linking and chemical cross-linking. Then, the double network structure composite hydrogels were obtained by immersed in tannic acid solution. The microstructure, mechanical properties, water content, swelling ratio, antibacterial properties, adhesion properties and rheology of the hydrogels were subsequently investigated. The obtained double network hydrogels have high mechanical properties due to chemical cross-linking and hydrogen bonding interactions, and the maximum tensile strength can reach 4.06 MPa and the elongation at break is up to 569.12%. The optimized calculations from molecular simulations proved that the strengths of the three different types of hydrogen bonds formed reached 37.70, 54.98 and 60.50 kJ/mol, respectively, also justifying the high mechanical strength of the hydrogels. The hydrogel can form good adhesion on various substrate materials such as wood, plastic, glass and pigskin with maximum adhesion strengths of 200.6, 24.8, 24.4 and 13.1 kPa, respectively. Wood surface has higher adhesion strength due to the presence of large amount of cellulose and hydrogen bonds formed by hydrogel. In conclusion, good adhesion can be formed on the surface of different materials. It was a wound dressing with potential application. Graphical abstract
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INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
·
2025
·
IF 8.5
Yuanhong Cai,Peipei Xu,Runbing Huang,Jiayi Huang,Junhua Zhan,Junpeng Su,Ruiyun You,Yudong Lu
This study presents the development of a novel polysaccharide biomolecule composite microsphere system based on sodium alginate (SA) and tremella fuciformis polysaccharide (TFP) for the encapsulation and controlled release of camellia oil (CO). The system leverages the synergistic properties of these two bioactive biopolymers to enhance the protection and bioavailability of CO during simulated digestion. The microspheres, characterized by their spherical structure and uniform particle size distribution, were comprehensively evaluated for stability, elemental composition, and thermal stability using techniques such as scanning electron microscopy (SEM), energy dispersive spectroscopy (EDS), Fourier transform infrared spectroscopy (FT-IR), and thermogravimetric analysis (TGA). The results confirmed a significant improvement in the elemental composition and surface properties of the microspheres due to the incorporation of CO, which enhanced their stability. In simulated digestion experiments, the microspheres demonstrated excellent gastric acid tolerance and intestinal release, achieving a high encapsulation efficiency of 99.59 % and an oil loading capacity of 80.67 %, effectively protecting and targeting the release of CO. Moreover, the microspheres exhibited significant antibacterial activity against Staphylococcus aureus ( S. aureus ) and Escherichia coli ( E. coli ). Overall, the SA/TFP/CO microspheres represent an ideal delivery system for CO, demonstrating considerable potential in the fields of food science and biomedicine.
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Polymers
·
2021
·Vol. 13
·期 24
·4376
·
IF 4.329
Jie Cao,Wenru Liu,Jun Mei,Jing Xie
This research was conducted to investigate the effect of active coatings composed of locust bean gum (LBG) and sodium alginate (SA) containing daphnetin emulsions (DEs) combined with modified atmosphere packaging (MAP) on the microbiological and physicochemical properties of turbot during 4 °C refrigerated storage for 32 days. The results revealed that LBG-SA-DE coatings together with high CO2MAP (60% CO2/35% N2/5% O2) maintained the total viable count (TVC) of H2S-producing bacteria in 4–6 lg CFU/g, which is lower than the limit (7 lg CFU/g). In addition, LBG-SA-DE coatings together with high CO2MAP (60% CO2/35% N2/5% O2) inhibited the production of odor compounds, including thiobarbituric acid (TBA), trimethylamine-nitrogen (TMA-N), K value, and total volatile basic nitrogen (TVB-N). The low-field NMR analysis (LF-NMR) and magnetic resonance imaging (MRI) indicated that LBG-SA-DE coatings together with high CO2MAP (60% CO2/35% N2/5% O2) treatments could delay the release of water located in muscle fiber macromolecules or convert it into free water based on muscle fiber destruction, thus maintaining the water content and migration. The results of the sensory evaluation showed that turbot treated with LBG-SA-DE coatings together with MAP could maintain its freshness during refrigerated storage.Keywords:turbot;active coating;modified atmosphere packaging;total volatile basic nitrogen;shelf life
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高影响因子
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
·
2025
·
IF 8.5
Shuai Chi,Xinyu Liu,Jiaqing Wu,Qian Feng,Lili Wang,Jianrong Li,Tong Sun
The natural high molecular polysaccharide Artemisia sphaerocephala Krasch gum (ASKG) was introduced into Polyvinyl alcohol (PVA) and Sodium alginate (SA), and the hydrogels with excellent absorbent properties were prepared by crosslinking method. The hydrogel form porous network structures through esterification of CA with PVA and ASKG, and chelation of Ca 2+ and SA. The water absorption, water retention, porosity and thermal stability of hydrogels are improved by ASKG. The higher the concentration and addition of cross-linking agent, the lower the water absorption rate of the hydrogels and the denser pore structure. When PVA is more than SA, the hydrogel has the best mechanical properties, and when SA is more than PVA, the hydrogel has porous network structure. The water absorption kinetics of the hydrogels conform Schott second-order kinetic model, indicating that the water absorption is a simple diffusion behavior. The 5P-5S-6 A-1C-0.025Ca 2+ hydrogel pad effectively adsorb fish fillet exudates, maintain the cleanliness of the fish fillets, inhibit the growth of microorganisms and protein oxidation due to wonderful water absorption, so the shelf life of the fillets is extended from 6.8 days to 9.1 days. Therefore, this study can provide technical guidance and theoretical support for the development of fresh food packaging materials.
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