FOOD HYDROCOLLOIDS
·
2025
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IF 12.4
Can Luo,Ruiqi Wang,Yingying Gu,Xiyuan Liu,Jie Zhu
This study investigated the substitution of NaCl with MgCl 2 or CaCl 2 in κ/ι-car myofibrillar protein complexes (K/I-MP) to improve low-sodium gel meat products. Texture and cooking loss analysis showed that the effects of MgCl 2 or CaCl 2 depended on the carrageenan type and conditions. κ-carrageenan (κ-car ) exhibited a negative effect under Ca 2+ (cooking loss increased by 30.69%) and a positive effect under Mg 2+ (cooking loss decreased by 13.41%); both carrageenans showed regulatory effects, with κ-car having a greater impact. Analysis of hydrophobicity, sulfhydryl content, particle size, AFM, CD, rheology, infrared spectroscopy, and molecular docking revealed that Ca 2+ and ι-carrageenan (ι-car) formed complexes via salt bridges, significantly enhancing MP aggregation and structural stability. Infrared spectroscopy and molecular docking further confirmed that ι-car reacted more readily with MP than κ-car Particle size increased from 1.5 μm to 2.5 μm, α-helix content rose from 25% to 35%, and hydrophobic group exposure decreased. In contrast, κ-car promoted aggregation through hydrophobic interactions and sulfhydryl crosslinking, with a weaker increase in α-helix content (25% to 28%). Mg 2+ had a weaker effect but significantly enhanced aggregation when combined with κ-car. In conclusion, Ca 2+ enhanced MP structure via salt bridges, especially with ι-car, while κ-car promoted aggregation by altering protein conformation. Mg 2+ had a weaker effect but enhanced aggregation with κ-car. These findings provide new insights into the synergy between divalent cations and carrageenan in MP gelation and strategies for developing low-sodium meat products.
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SCIENCE OF THE TOTAL ENVIRONMENT
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2022
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IF 10.753
Peiyu Yang,Fei Yu,Zhengqu Yang,Xiaochen Zhang,Jie Ma
The treatment of antibiotic wastewater pollution is imminent, the studies of double-network hydrogels as adsorbents have gradually increased, it is quite important to develop a non-toxic hydrogel with excellent properties as adsorbent. In this study, a graphene oxide modified κ-carrageenan/sodium alginate (GO-κ-car/SA) gel was prepared by calcium hardening. The addition of GO nanosheets enhances the mechanical strength and anti-swelling property of the double-network hydrogel, making it possible for the application in the fixed-bed column system. The elastic modulus is twice as much as the hydrogel without GO. The maximum adsorption capacity in the experiments of the GO-κ-car/SA gel for CIP and OFL can reach 272.18 mg g −1 and 197.39 mg g −1 , respectively. The GO-κ-car/SA gel always remains negatively charged, which means that the adsorption capacity of the gel is better in an acidic environment. In the fixed-bed column system, through Thomas fitting, the maximum adsorption capacity of the simulated OFL wastewater (200 mg L −1 ) is 83.99 mg g −1 . The adsorption mechanism of antibiotics by GO-κ-car/SA gel depends on hydrogen bond , functional groups and electrostatic adsorption. The good hydrophilic properties, excellent adsorption capacity and high mechanical strength, which can ensure that the adsorbent is in full contact with the contaminants without major deformation or damage, makes the study more helpful for the further study on hydrogel in the fixed-bed column system.
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LANGMUIR
·
2022
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IF 4.331
Xueying Wang,Yang Yang,Rui Wang,Ling Li,Xiaohui Zhao,Wenming Zhang
Herein, we fabricate N-doped porous Ni3S2–Co9S8/carbon aerogels (Ni3S2–Co9S8/NCAs) using carrageenan/NiCo-metal–organic framework (MOF) hydrogels as the precursor via the high-temperature carbonization route with excellent electrocatalytic properties for the oxygen evolution reaction (OER). The electrochemical measurements indicate that the Ni3S2–Co9S8/NCA as a quintessential electrocatalyst exhibits excellent OER performance, which has outperformed most transition metal sulfide (TMS) catalysts in alkaline environments, as attested with a lower overpotential of 337 mV at 10 mA cm–2 and a smaller Tafel slope of 77 mV dec–1. Meanwhile, a Zn–air battery based on Ni3S2–Co9S8/NCA + Pt/C achieves a large power density of up to 256 mW cm–2 (and 193 mW cm–2), small charge/discharge voltage gap, and good cycling stability, notably better than the conventional RuO2 + Pt/C-based Zn–air batteries. These excellent electrocatalytic properties are mainly attributed to the distinct hierarchical porous structure and interfacial synergy between the Ni3S2 and Co9S8 nanoparticle structure with rich defects, facilitating the mass transport and high graphitization degree beneficial for electron mobility. It is envisioned that the research provides a novel approach for the exploration of marine biomass as an electrocatalyst.
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Antioxidants
·
2021
·Vol. 10
·期 8
·1186
·
IF 6.313
Noman Walayat,Xiukang Wang,Asad Nawaz,Zhongli Zhang,Abdullah,Ibrahim Khalifa,Muhammad Hamzah Saleem,Bilal Sajid Mushtaq,Mirian Pateiro,José M. Lorenzo,Sajid Fiaz,Shafaqat Ali
This study was done to analyze the cryoprotective influence of ovalbumin (OVA) with kappa-carrageenan (KC) in grass carp myofibrillar proteins during frozen storage. Ca2+-ATPase activity of MP was significantly reduced due to protein denaturation and showed a direct association with decreased sulphydryl (SH) contents and tertiary structural properties. Besides that, an increase in carbonyl, surface hydrophobicity, and dityrosine contents was observed. The addition of OVA-KC significantly restricted the decline in Ca2+-ATPase and SH groups, which were further confirmed by the retarded increase in carbonyls. Furthermore, the addition of OVA-KC increased the stability of α-helix contents. Moreover, MP treated with 6% OVA-KC also improved intermolecular interaction forces linked with gelling and water holding properties of MP. Therefore, it can be concluded that OVA-KC could be used as an effective cryoprotectant in fish and related products for preservation and commercialization.Keywords:myofibrillar protein;cryoprotective effect;oxidative stability
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JOURNAL OF POWER SOURCES
·
2020
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IF 8.247
Tingting Ye,Yihui Zou,Wenjia Xu,Tianrong Zhan,Jin Sun,Yanzhi Xia,Xiaoli Zhang,Dongjiang Yang
Gel polymer electrolyte (GPE) based on poly(vinyl alcohol) (PVA) is widely reported due to its excellent mechanical strength , low cost, nontoxicity, and chemical stability. However, the low ionic conductivity that attributed to semi-crystalline structure and the high flammability of PVA limits its application in solid-state supercapacitors (SSCs). Herein, we use self-flame-retardant carrageenans (Car) to form hygrogen bonds with PVA molecular chains and improve their energy of nucleation. The obtained blend PVA/Car GPE displays low crystallinity , high ionic conductivity and excellent flame-retardant performance. The SSCs fabricated by PVA/Car GPE and activated carbon electrodes exhibit a high specific capacitance (406 mF cm −2 at 5 mA cm −2 ) and an excellent rate performance (99.9% capacitance retention after 5500 cycles). Furthermore, the flexible SSC in the bent state does not show any change and can drive a light-emitting diode successfully. The present work highlights a novel biomass strategy to reduce the crystallinity of PVA and obtain flame-retardant hybrid GPE simultaneously, which provides opportunities for flexible electronics with greatly enhanced ionic conductivity and safety.
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CARBOHYDRATE POLYMERS
·
2023
·
IF 11.2
Jincheng Yu,Siyao Tian,Anrong Yao,Haoyi Hu,Jianwu Lan,Lin Yang,Xiaosheng Du,Shaojian Lin
In this work, a novel biomass-based aerogel , polydopamine decorated pomelo peel powder/polyethyleneimine/κ-carrageenan (PPEKC) aerogel, was developed for dye wastewater treatment . The as-prepared PPEKC aerogel possessed a robust structure and good compressible resilience. As expected, this aerogel presented remarkable efficacy in eliminating both anionic and cationic dyes. The experimental maximum adsorption capacities were 2016.7 mg g −1 for congo red (CR) at pH = 5 and 1176.6 mg g −1 for methylene blue (MEB) at pH = 11, following with ultra-fast adsorption rates. The adsorption kinetics followed the pseudo-second-order model. The adsorption isotherms exhibited a stronger alignment with the Langmuir isotherm model for CR at 308 K and MEB at 288, 298, 308 K. The Freundlich isotherm model yielded a suitable fit for the adsorption of CR at 288 and 298 K. Thermodynamic analyses indicated that the removal of CR and MEB was spontaneous and endothermic. The adsorption mechanisms involved electrostatic interactions , π-π interactions, and hydrogen bonds . Intriguingly, it could achieve bidirectional selective adsorption of anionic and cationic dyes in the designed pH values, due to pH-tunable surface charge . Additionally, it also exhibited favorable reusability and antibacterial activity . Therefore, the as-prepared PPEKC aerogel could be a promising biosorbent for dye wastewater treatment .
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PROGRESS IN ORGANIC COATINGS
·
2023
·
IF 6.6
Xingguo Zhang,Baoxue Zhang,Rongrong Mao,Zulong Huang,Keyan Jing,Changchun Jin,Bin Yang,Jun Qi,Manman Yu,Guoyuan Xiong,Yong Hu
Multi-layer active food packing films fabricated with outer layer made of sodium alginate (SA) and inner layer made of k -carrageenan (CAR) and gelatin (GEL) contained with oregano essential oil (OEO) and ZnO nanoparticles (ZnO NPs) were developed through layer-by-layer (LBL) assemble method and characterized in this study. The results of fourier transform infrared (FT-IR) demonstrated OEO, ZnO NPs and SA outer layers were successfully incorporated into the multi-layer film system by hydrogen bonding . ZnO NPs significantly improved the mechanical properties , thermal stability, UV resistance and retention of OEO of the films ( P < 0.05). Scanning electron microscope (SEM) images clearly showed SA/CAR-GEL-OEO film and SA/CAR-GEL-OEO-ZnO NPs film had a bilayer structure. Noteworthy, the multi-layer films exhibited higher OEO retention compared to the mono-layer films, and compensated the negative effect of ZnO NPs and OEO on the light transmittance while enhancing the UV resistance of the films. The multi-layer films exhibited stronger antioxidant and antibacterial activity than mono-layer films. To summarize, the multi-layer films loaded with OEO and ZnO NPs enhanced antioxidant and antibacterial activities and displayed great potential as active packaging for food preservation.
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INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
·
2024
·
IF 7.7
Zhenyang Li,Huijuan Zhang,Chenyu Li,Xiyu Tian,Shuzheng Liu,Gang Qin,Jia Yang,Qiang Chen
As flexible electronics devices for energy storage, mechanical energy collection and self-powered sensing, stretchable flexible supercapacitor and triboelectric nanogenerator (TENG) have attracted extensive attention. However, it is difficult to satisfy the requirements of high safety and resistance to extreme conditions. Dual roles of mechanical and electrical enhancement of inorganic salt are put forward, and a carrageenan (CG) enhanced poly ( N -hydroxyethyl acrylamide)/CG/lithium chloride/glycerol (PCLG) conductive gel is prepared by designing hydrogen bonding self-crosslinking and chain entanglement . A high concentration and rapid deposition strategy is proposed to prepare a PCLG gel-based stretchable flexible all-in-one supercapacitor for energy storage, and a single electrode PCLG gel-based TENG is designed for mechanical energy collection, self-powered strain and tactile sensing. The supercapacitor has high capacitance, excellent cycling stability. The TENG possesses efficient energy harvesting with high and stable output voltage and power density, and sensitive and stable self-powered strain and tactile sensing without external power supply. Even under extreme conditions such as low temperatures, self-healing after damage, prolonged placement, deformation, post-deformation, multiple continuous work, pinprick and burning, the supercapacitor and TENG still have excellent properties. Therefore, we provide novel ideas to design flexible supercapacitor and TENG used under extreme conditions for future wearable electronics .
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FOOD RESEARCH INTERNATIONAL
·
2024
·
IF 7
Yu Chen,Lihong Chen,Feng Li,Liurong Huang,Yuhan Yan,Ronghai He
NaCl and CaCl 2 are commonly used edible salts in food. The synergistic influences of these two salts on the physicochemical properties of whey protein isolate-carrageenan (WPI-Car) complexes were investigated in relation to their foaming and emulsifying properties. The results showed that as the ratio of NaCl: CaCl 2 decreased from 6:0 to 3:3, the turbidity of the complexes increased from 0.51 to 0.77 and the absolute zeta potential decreased from 28.86 to 9.05 mV ( P < 0.05). NaCl caused the exposure of hydrophobic groups, whereas CaCl 2 caused hydrophobic groups to be buried within the molecule. The transformation between the α-helix structure and β-sheet structure of WPI was closely related to the ratios of NaCl to CaCl 2 . The electrostatic force, hydrophobic interaction, and hydrogen bond were significantly influenced by the synergistic influence of NaCl and CaCl 2 . The foaming capacity of WPI-Car complexes reached a maximum of 90.0 % at a NaCl: CaCl 2 ratio of 3:3. Compared to the individual effects of monovalent NaCl and divalent CaCl 2 , the mixture of NaCl and CaCl 2 (5:1) produced suitable refolding due to their synergistic effect, which improved the emulsifying properties of WPI-Car complexes. The findings of this study provide useful information for designing and preparing WPI-Car complexes for food applications
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INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
·
2025
·
IF 8.5
Yige Chen,Qiaoyu Huang,Man Zhou,Yong Hu,Yuhong Zhang,Xueliang Jiang,Zhaoxia Chen
Conductive hydrogels have demonstrated great potential in flexible wearable sensors due to their excellent flexibility and conductivity. Nevertheless, traditional hydrogels suffer from limitations such as weak mechanical properties, inadequate fatigue resistance, and lack of recyclability, which have hindered their practical applications. In this study, a polyvinyl alcohol/polyacrylamide/κ-carrageenan-Ca 2+ /K + (PPK-Ca 2+ /K + ) composite hydrogel was developed by constructing a dynamic network structure involving hydrogen bonds, electrostatic interactions, and synergistic co-crosslinking of Ca 2+ /K + . The resulting ionic conductive hydrogel exhibited remarkable stretchability (~ 414 %), high tensile strength (1190 kPa), and excellent fatigue resistance. Benefiting from the negatively charged κ-carrageenan and the ion transport co-regulation by Ca 2+ /K + , the hydrogel achieved a high ionic conductivity of 7.26 mS/cm. Moreover, owing to the thermoreversible properties of κ-carrageenan and PVA, the hydrogel material could be recycled through high-temperature remolding processes. The flexible sensor assembled with PPK-Ca 2+ /K + hydrogel demonstrated high sensitivity, a broad detection range (0–400 %), and rapid response time (152 ms), enabling precise monitoring of various human activities, ranging from large joint movements to subtle muscle contractions. The proposed fabrication strategy for robust, fatigue-resistant, self-healing, and recyclable conductive hydrogel provides new insights for developing high-performance wearable sensors and electronic skin.
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Journal of Aquatic Food Product Technology
·
2024
·
IF 1.3
Wen Sun,Xiao-Fan Cui,Jia-Nan Yan,Xin-Yu Jiang,Lin Li,Hai-Tao Wu
The gelation and microstructural properties of the hybrid gel constructed by scallop (Patinopecten yessoensis) male gonad hydrolysates (SMGHs), κ-carrageenan (κ-C), and methyl-β-cyclodextrin (M-β-CD) were determined by utilizing rheometer, low-field nuclear magnetic resonance (LF-NMR), Fourier transform infrared spectroscopy (FTIR), as well as cryo-scanning electron microscopy (cryo-SEM). The rheological results of SMGHs/κ-C were improved by the addition of M-β-CD. The stronger synergistic effects between SMGHs and saccharides were also evidenced by the red shift in hydrogen bonds and blue shift in ester sulfate bonds of SMGHs/κ-C/M-β-CD and κ-C/M-β-CD. These situations jointly promoted the formation of a denser microstructure by cryo-SEM. SMGHs/κ-C/M-β-CD complex could promise a new strategy to develop functional hydrogels.
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FOOD CHEMISTRY
·
2025
·
IF 9.8
Wentao Ma,Wei Liu,Chao Yuan,Bo Cui,Yaqi Liu,Li Guo,Bin Yu,Meng Zhao,Feixue Zou
To overcome the limitations of conventional vitamin E (VE) delivery systems, a double-package system comprising κ-carrageenan hydrogels and VE/highly branched cyclodextrin (HBCD) composites was developed and systematically evaluated for structural characteristics and release behavior. The results demonstrated that HBCD encapsulation of VE formed stable composites with high encapsulation efficiency (81.72 %) and thermostability (325.86 °C), which facilitated the ordered alignment and helical aggregation of κ-carrageenan chains to build a continuous and uniform hydrogel network. The 2 % composites within the κ-carrageenan network strengthened hydrogen-bond interaction and generated a secondary micro-network, thereby enhancing structural integrity (758.39 Pa) and freeze–thaw stability (a 30 % reduction in syneresis) of the double-package system. Importantly, the inner–outer network effectively protected VE under gastric conditions and enabled controlled intestinal release (> 60 %). Overall, this study underscores the potential of HBCD as a wall material and provides a strategy for the design of double-package delivery systems.
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