Frontiers of Environmental Science & Engineering
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2022
·Vol. 16
·期 10
·1-14
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IF 6.048
Li Na,Gao Boqiang,Yang Ran,Yang Hu
3D composite aerogels (CMC-CG) composed of carboxymethyl cellulose and κ-carrageenan were designed and fabricated using the one-pot synthesis technique. The optimized CMC-CG showed a good mechanical property and a high swelling ratio due to its superior textural properties with a proper chemically cross-linked interpenetrating network structure. CMC-CG was utilized for the removal of various fluoroquinolones (FQs) from water and exhibited high adsorption performance because of effective electrostatic attraction and hydrogen bonding interactions. Ciprofloxacin (CIP), a popular FQ, was used as the representative. The optimized CMC-CG had a theoretically maximal CIP uptake of approximately 1.271 mmol/g at the pH of 5.0. The adsorption capacity of CMC-CG was improved in the presence of some cations, Cu 2+ and Fe 3+ ions, at a low concentration through the bridging effect but was reduced at a high concentration. The investigation of adsorption mechanisms, based on the adsorption kinetics, isotherms and thermodynamic study, Fourier transform infrared spectrometry and X-ray photoelectron spectroscopy analyses before and after adsorption, and changes in the adsorption performance of CMC-CG toward two molecular probes, further indicated that electrostatic attraction was the dominant interaction rather than hydrogen bonding in this adsorption. CMC-CG after saturated adsorption of CIP could be easily regenerated using a dilute NaCl aqueous solution and reused efficiently. Moreover, the disused aerogel could still be reused as a new adsorbent for effective adsorption of Cu 2+ ion. Overall, this study suggested the promising applications of this composite aerogel as an eco-friendly, cost-effective, and recyclable adsorbent for the efficient removal of FQs from water.
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FOOD CHEMISTRY
·
2026
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IF 10.4
Ying Jiang,Yaqi Ding,Xiaorui Zhou,Bo Cui,Bin Li
Flour source altered acid–thermal response of konjac sols. • Amorphophallus bulbifer flour showed higher sol transmittance and slower modulus decay. • Water distribution differed among the tested κ-carrageenan co-gel formulations. • Flour-dependent differences were expressed differently in sol and κ-carrageenan co-gel systems. Commercial refined konjac flours contain glucomannan as their dominant polysaccharide, but their functional performance requires evaluation across processing conditions and gel formulations. Here, flours from Amorphophallus bulbifer (ABF) and Amorphophallus rivieri (ARF) were compared using compositional analysis, swelling behaviour, rheology, optical measurements, low-field NMR, and κ-carrageenan co-gel systems. Relative to ARF, ABF showed lower swelling viscosity, higher sol transmittance, and later modulus maxima during prolonged holding. Under combined acid–thermal stress, ABF retained low-shear viscosity more effectively than ARF, indicating distinct response modes rather than uniformly weaker behaviour. ABF-based co-gels showed higher transmittance across matched formulations. Water distribution and mechanical properties varied among the tested flour–formulation combinations. Flour-dependent differences were expressed differently across the sol and co-gel systems. These findings support evaluating commercial flours through processing response and formulation-specific gel properties. Download: Download high-res image (221KB) Download: Download full-size image
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Innovative Food Science & Emerging Technologies
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2026
·
IF 6.9
Xiaoyun Fei,Shihao Yang,Deming Gong,Guowen Zhang
In response to the growing demand for sustainable active packaging materials, the carrageenan-chitosan-based emulsion films with different amounts of cinnamon essential oil Pickering emulsions (CPEs) were prepared in this study. Scanning electron microscopy, X-ray diffraction and Fourier transform infrared spectroscopy showed that the CPEs were uniformly distributed in the film-forming matrix, with excellent matrix compatibility to form a dense film. When 500 μL CPEs were added, the carrageenan-chitosan film (CF 500 film) showed the highest tensile strength (11.13 Mpa) and elongation at break (14.55%), the lowest water vapor permeability (1.48 g·Pa −1 ·cm −1 ·s −1 ) and oxygen permeability (1.70 g·Pa −1 ·cm −1 ·s −1 ). In the blueberry preservation experiment, after storage for 9 days, the blueberries in the CF 500 film group had a lower weight loss rate (25.59%), and higher total soluble solids content (13.53%), titratable acidity (0.41%), ascorbic acid content (19.46 mg/100 g) and anthocyanin content (0.57 mg/g). In addition, the superoxide dismutase (SOD), catalase (CAT), and ascorbate peroxidase (APX) activity of blueberries in the CF500 film group were the highest, which were 62.37 U/g, 196.22 U/g and 5.48 U/g higher than those in the control group, respectively, which was beneficial to delay the senescence and spoilage of blueberry. This study provides an effective strategy for the design of carrageenan-chitosan composite active packaging with high basic properties and strong antibacterial ability.
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INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
·
2026
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IF 8.7
Baoqi Ding,Susu Zhang,Wenju Jiang,Wenxin Qu,Yuan Tan,Zhiwei Ding,Weizhe Tian,Ye Yuan,Chunguang Ren,Zongliang Liu,Qun Liu
A hydrogel loaded Chlorella and berberine was constructed based on carboxymethyl chitosan, κ-carrageenan and silk fibroin. • The hydrogel exhibited excellent sustained oxygen-producing capacity. • The hydrogel demonstrated remarkable antibacterial activity and high biocompatibility. • The hydrogel can facilitate wound healing and promote tissue regeneration. Hypoxia and bacterial infection synergistically impede skin wound healing, posing significant clinical challenges. Conventional oxygen-releasing agents and antimicrobial agents are constrained by poor biocompatibility and the emergence of drug resistance. Consequently, the development of biocompatible, non-resistance-inducing oxygen-releasing antimicrobial wound dressings is of paramount importance. This study presents a κ-carrageenan (κ-Cr)/carboxymethyl chitosan (CMCS) hydrogel wound dressing loaded with Chlorella and berberine (BBR). Chlorella facilitates stable and sustained oxygen release with excellent biocompatibility, while berberine exhibits broad-spectrum antimicrobial activity without inducing drug resistance. In vitro experiments reveal that under light conditions, the hydrogel releases a cumulative 8 mg/mL of oxygen within 8 h and reduces bacterial viability to 2%, demonstrating excellent sustained oxygen-release and antimicrobial properties. The hydrogel matrix, formed via electrostatic cross-linking of κ-carrageenan and carboxymethyl chitosan, enhances adhesive performance, endowing the dressing with outstanding mechanical properties and skin adhesiveness. In vivo studies using a rat full-thickness skin wound model demonstrate the hydrogel's remarkable wound-healing efficacy: the wound healing rate reaches 98% by day 10, highlighting the hydrogel's ability to accelerate wound repair. Overall, this multifunctional hydrogel wound dressing holds substantial promise in the field of skin wound healing and provides a promising therapeutic strategy for patients with complex healing needs.
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FOOD HYDROCOLLOIDS
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2023
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IF 10.7
Jianglan Yuan,Ping Yan,Xiaocui Liu,Xu Kang,Yongguo Jin,Long Sheng,Jianxin Xia
This study explored the feasibility of a novel solid-like fat stabilized by porcine plasma protein (PPP) and carrageenan (CG) coupling emulsifier as curcumin delivery vehicle. The combination of 2.0% (w/v) PPP and 0.3% (w/v) CG successfully stabilized the oil of 80% (v/v) volume fraction at solid-like state, and the increasing of oil phase led to the increase in droplet size , storage modulus (G′) and apparent viscosity. Compared with free oil, oxidation of PPP-CG-stabilized solid-like fat could be significantly inhibited. The results from in vitro simulated digestion showed that the release rate of free fatty acids and bioaccessibility of curcumin in the solid-like fat were significantly higher than those in free oil, and curcumin was almost not released in simulated gastric fluid, but mainly released in simulated intestinal fluid. Therefore, PPP-CG-stabilized solid-like fat could be used as an effective nutrient delivery vehicle for food and pharmaceuticals, and the work provided some new insights into the structure design of functional food.
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JOURNAL OF SEPARATION SCIENCE
·
2021
·Vol. 44
·期 10
·2143-2152
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IF 3.645
Xueting Jin,Canhong Zhu,Jiani Wu,Yinghua Yan,Chuan-Fan Ding,Keqi Tang,Di Zhang
In this work, a magnetic graphene material coated with mesoporous silica was selected as the substrate, 3-glycidoxypropyltrimethoxysilane and polyethyleneimine were sequentially bonded through chemical reactions, and then carrageenan was successfully introduced by electrostatic interaction; finally, hydrophilic nanocomposite material was prepared. Due to the large number of hydrophilic groups, and polyethyleneimine was connected by means of chemical bonds, this material exhibits good hydrophilicity and stability for glycopeptide enrichment. In the actual enrichment process, nanomaterial exhibits high selectivity (1:500), high sensitivity (2 fmol), and good repeatability (five cycles). In addition, the synthesized material also shows a good enrichment effect in the face of actual complex biological samples, which captured 40 N -glycopeptides from human saliva, indicating the application potential for enrichment of N -glycopeptides.
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INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
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2020
·
IF 5.162
Weinan Huang,Lihong Wang,Yuqing Wei,Mengna Cao,Hujun Xie,Di Wu
In this manuscript, lysozyme/κ-carrageenan (LYS-CRG) complexes were prepared and used to encapsulate curcumin. The LYS-CRG complexes demonstrate good encapsulation of curcumin (CUR), and the encapsulation efficiency ( EE ) and loading capacity ( LC ) reach 96.2% and 2.31%, respectively. The encapsulated CUR has high antioxidant activity , while the thermal stability and photostability of CUR are also increased. The LYS-CRG complexes could effectively improve the storage stability of CUR and increase its retention rate. In simulated gastric fluid, only 17.91% CUR in the CUR-LYS-CRG complex nanoparticles is released in 3 h, while in the simulated intestinal fluid, the CUR release rate quickly reaches 62.56% in 1.5 h. The release rate tends to be stable within 1.5 h to 3 h and the final release rate reaches 67.23%, suggesting that the formation of CUR-LYS-CRG complex nanoparticles does not affect CUR release in the simulated intestinal fluid.
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EUROPEAN POLYMER JOURNAL
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2020
·
IF 3.862
Liyan Zhao,Qifang Zheng,Yuxing Liu,Shuo Wang,Jing Wang,Xiaofei Liu
Double network (DN) hydrogels with high strength and toughness have been developed as promising materials. In this paper, we prepared a novel κ-carrageenan/polyacrylic acid (κ-CG/PAA) DN hydrogel with excellent mechanical performances, which was achieved by dual cross-linking of the stiff first network. The obtained DN-1.956-0.1-2-15 hydrogels exhibited exceptional mechanical properties with fracture tensile stress of 2.53 MPa, fracture strain of 1381.91% and toughness of 13.40 MJ/m 3 . The results showed that dual cross-linking of κ-CG (double-helical junctions and metal coordination bonds) was conductive to high strength and toughness. Moreover, due to their totally physically cross-linking structures, the hydrogels showed 67% recovery of toughness after 2 min. Furthermore, the DN hydrogels showed self-healing capability, shape-memory ability, as well as excellent cytocompatibility and biodegradability. Such a designed DN hydrogel realizes the essential integration of improved mechanical properties, good biocompatibility and biodegradation for developing a desired scaffold material for potential tissue engineering applications.
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INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
·
2023
·
IF 8.2
Chunhua Zhu,Mingjing Mou,Leilei Yang,Zedong Jiang,Mingjing Zheng,Zhipeng Li,Tao Hong,Hui Ni,Qingbiao Li,Yuanfan Yang,Yanbing Zhu
κ-Carrageenase can degrade κ-carrageenan to produce bioactive κ-carrageenan oligosaccharides (KCOs) that have potential applications in pharmaceutical, food, agricultural, and cosmetics industries. Immobilized enzymes gain their popularity due to their good reusability, enhanced stability, and tunability. In this study, the previously characterized catalytic domain of Pseudoalteromonas purpurea κ-carrageenase was covalently immobilized on the synthesized amine-modified zeolitic imidazolate framework-8 nanoparticles with the formation of cross-linked enzyme aggregates, and the immobilized κ-carrageenase was further characterized. The immobilized κ-carrageenase demonstrated excellent pH stability and good reusability, and exhibited higher optimal reaction temperature, better thermostability, and extended storage stability compared with the free enzyme. The KCOs produced by the immobilized κ-carrageenase could significantly decrease the TC, TG, and LDL-C levels in HepG2 cells, increase the HDL-C level in HepG2 cells, and reduce the free fatty acids level in Caco-2 cells. Biochemical assays showed that the KCOs could activate AMPK activity, increase the ratios of p-AMPK/AMPK and p-ACC/ACC, and downregulate the expression of the lipid metabolism related proteins including SREBP1 and HMGCR in the hyperlipidemic HepG2 cells. This study provides a novel and effective method for immobilization of κ-carrageenase, and the KCOs produced by the immobilized enzyme could be a potential therapeutic agent to prevent hyperlipidemia.
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FOOD HYDROCOLLOIDS
·
2019
·
IF 5.839
Jia-Nan Yan,Wen-Hui Shang,Jun Zhao,Jia-Run Han,Wen-Gang Jin,Hai-Tao Wang,Yi-Nan Du,Hai-Tao Wu,Srinivas Janaswamy,Youling L. Xiong,Bei-Wei Zhu
This article reported the gelation and microstructural properties of scallop male gonads hydrolysates (SMGHs) in the presence of κ-Carrageenan (κ-C) and treated or untreated with potassium chloride (KCl). The presence of κ-C significantly increased the elastic moduli (10.3–449.5 Pa) and melting temperature (32.7–46.7 °C) of SMGHs. The decrease in the relaxation time ( T 21 , T 23 ) signified the strong binding between SMGHs and κ-C. The blue shift in the amide I and II peals coupled with a new band of 1159 cm −1 in SMGHs/κ-C further demonstrated the electrostatic interactions between SMGHs and κ-C. κ-C rose the percentage of β-sheets from 28.10% to 35.93% but at the expense of α-helix and β-turn fractions and highly ebbed the intrinsic fluorescence of SMGHs. Such scenarios resulted in a more compact network formation and flocculation of κ-C chains. The salt-treatment to κ-C promoted helical formation, however, presence of SMGHs created larger interstitial spaces in the κ-C network due to aggregates of SMGHs and decreased the overall gel strength. The outcome promises novel opportunities in the design and development of functional hydrogels based on protein and polysaccharide complexes for food , pharmaceutical and biomedical applications.
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CHEMICAL ENGINEERING JOURNAL
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2019
·
IF 8.355
Liqing Li,Jinghua Zhao,Yiran Sun,Fei Yu,Jie Ma
Double-network gel is composed of two kinds of crosslinked organic/inorganic networks, which has a good prospect of environmental application and its application in the antibiotic removal has important practical significance. Novel polysaccharide-based double-network gel bead (SK) with low-swelling, enhanced mechanical properties and excellent adsorption capacity of ciprofloxacin hydrochloride (CIP) was prepared via a facile ionically cross-linking method. Mechanical properties tests and swelling experiments showed that the sorbent has an enhanced mechanical property with stress of 1.07 MPa and an elastic modulus of 1.3 MPa at 90% strain and a reduced swelling property compared to a single ĸ-CG/Ca 2+ network. The adsorption performances of SK gel for CIP were investigated by changing the ratio of raw materials, crosslinking agent concentration, adsorbent dosage, contact time, temperature, pH, and pollutant concentration systematically. The above studies indicated that the maximum adsorption capacity of 291.6 mg/g was obtained at pH = 5.1. The kinetic datas were well fitted to the pseudo-second-order model, indicating that chemical sorption was the rate-limiting step. The isotherm of adsorption could be described by the Langmuir-Freundlich model well, which showed that SK gel had heterogeneous surface and different binding sites. By analyzing FT-IR spectroscopy and the adsorption changes under different pH, the adsorption mechanism may be explained by hydrogen bonding and the electrostatic interactions between CIP and the adsorbent. This study highlighted that SK gel beads could be used as a promising adsorbent for the large-scale removal of CIP in aqueous solutions, and the research will be conducive to address CIP pollution efficiently.
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Food Chemistry-X
·
2024
·
IF 6.5
Xin-Yu Jiang,Lin Li,Jia-Nan Yan,Ce Wang,Bin Lai,Hai-Tao Wu
This study focused on binary hydrogels constructed from lotus rhizome starch (LRS) and three types of carrageenan ( κ -C, ι -C, and λ -C). The enthalpy of LRS gelatinization was reduced by 32.1%-88.4% with the incorporation of carrageenan. Compared with ι -C and λ -C, the conformations of κ -C more facilitated the development of the binary hydrogel network structure. The ability of the LRS/carrageenan binary hydrogel to immobilize water was mainly related to the effect of different types of carrageenan on starch molecular ordering. LRS-based hydrogels were recognized as level 4 in the International Dysphagia Diet Standardization Initiative (IDDSI) framework. Nevertheless, the incorporation of carrageenan significantly reduced the ability of the LRS hydrogel to resist stress under large deformations, which might be favorable to oral processing and swallowing. This research provides preliminary evidence for relevant industries to use carrageenan to adjust LRS hydrogel properties and improve the quality of starch-based foods for dysphagia management.
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