ENVIRONMENTAL SCIENCE & TECHNOLOGY
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2022
·
IF 11.357
Rui Hou,Qianyi Huang,Yunfeng Pan,Lang Lin,Shan Liu,Hengxiang Li,Xiangrong Xu
The increasing discharge and ubiquitous occurrence of novel brominated flame retardants (NBFRs) in aquatic environments have initiated intense global concerns; however, little information is available regarding their structure-related trophodynamics in marine food webs. In this study, a tropical marine food web including 29 species (18 fish and 11 invertebrate species) was collected from coral reef waters of the Xisha Islands, the South China Sea, for an analysis of 11 representative NBFRs. The mean ∑NBFR concentrations generally increased in the following sequence: sea cucumbers (0.330 ng/g lw) < crabs (0.380 ng/g lw) < shells (2.10 ng/g lw) < herbivorous fishes (2.30 ng/g lw) < carnivorous fishes (4.13 ng/g lw), with decabromodiphenyl ethane (DBDPE) and hexabromobenzene (HBB) as the predominant components. Trophic magnification was observed for all of the investigated NBFRs, with trophic magnification factors (TMFs) ranging from 1.53 (tetrabromobisphenol A bis(dibromopropyl ether)) to 5.32 (HBB). Significant negative correlations were also found between the TMFs and the tested in vitro transformation clearance rates (CLin vitro) for the target NBFRs except for bis(2-ethylhexyl)-3,4,5,6-tetrabromo-phthalate (TBPH) (p < 0.05). Multiple linear regression analysis confirmed that the transformation rate is a more powerful predictor for TMFs than the hydrophobicity of NBFRs in this marine food web.
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Journal of Energy Chemistry
·
2021
·
IF 9.676
Tingting Liu,Sheng Cai,Genfu Zhao,Zhihui Gao,Shuming Liu,Huani Li,Lijuan Chen,Mian Li,Xiaofei Yang,Hong Guo
Along with the continuous consumption in lithium-ion batteries (LIBs), the price of cobalt is inevitably going up in recent years. Therefore, recycling valuable Co element from spent devices, and boosting its service efficiency are becoming two indispensable approaches to promote the utilization of Co in various energy conversion/storage devices. Herein, we realize the recovery of Co from spent LIBs and synthesize a three–dimensional (3D) sea-urchin-like cobalt nitride composite material (labeled as CoN-Gr-2), which is used as a bi-functional catalyst for water splitting. Benefiting from the intrinsic high conductivity, larger surface area and unique 3D sea–urchin–like architecture, CoN-Gr-2 shows an excellent electron transfer efficiency, highly exposed active sites as well as the superior mass transport capacity. The CoN-Gr-2 catalyst exhibits low overpotentials of 128.9 mV and 280 mV for hydrogen evolution reaction (HER) and oxygen evolution reaction (OER), which are comparable to the commercial 20 wt% Pt/C and RuO 2 catalysts. Moreover, when adopting CoN-Gr-2 as both anode and cathode materials for overall water splitting (in 1.0 M KOH electrolyte), the assembled cell achieves a current density of 10 mA cm −2 at 1.61 V, which almost close to that of Pt/C||RuO 2 benchmark (1.60 V), demonstrating its superior water-splitting efficiency. Meanwhile, the CoN catalysts exhibit strong chemical interaction with the Gr support, suppressing the aggregation of CoN catalysts and maintains their high activity during HER and OER reactions. So, the cell exhibits a high current retention of 97.3% after 40 h. This work successfully develops an industrial chain from recycling Co wastes in spent energy devices to controllably designing 3D sea-urchin-like CoN-Gr with high water splitting efficiency. Therefore, it could further promote the efficient utilization of valuable Co element in various energy devices.
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Journal of Functional Foods
·
2020
·
IF 3.701
Xiaomeng Xu,Rong Liang,Dongmei Li,Chengyao Jiang,Songyi Lin
To investigate the dose-effect relationship of sea cucumber peptides on memory function improvement, animal experiments, behavioral experiments, ACh content, AChE activity, hippocampal morphology, and protein modifications were detected. Sea cucumber peptides (650 mg/kg, 1300 mg/kg, 2600 mg/kg body weight) and piracetam (400 mg/kg) were gavaged into the mice. Scopolamine (5 mg/kg) were administered intraperitoneally to mice. In behavioral experiments, the escape latency and the shocked time of sea cucumber peptides (SCP) groups were significantly reduced ( P < 0.05). Determination of biochemical indicators found that ACh content and AChE activity of SCP groups were increased ( P < 0.05). The number of neurons in the hippocampus of SCP groups were larger, arranged neatly and intact. The histone acetyltransferases activity of SCP groups may be lower than that of the Scopolamine group, so the acetylation level is down-regulated and approached to dynamic equilibrium, thereby the memory activity of mice was improved.
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SENSORS AND ACTUATORS B-CHEMICAL
·
2023
·
IF 8.4
Feng Hong,Liangqiong Ren,Feng Jiang,Shilong Ruan,Jianhan Lin,Jianlong Wang,Xiaobo Hu,Yiping Chen
The development of a low-cost, high-sensitivity, portable bioassay for detecting the highly toxic and thermally stable aflatoxin B 1 (AFB 1 ) is of significant importance to food safety and human health. A pipette–smartphone integrated biosensor based on a super “four-in-one” DNA sea-urchin-like composite catalyst (FSCC) was constructed for the efficient analysis of AFB 1 . Detection is possible via a self-made poly(methyl methacrylate) pipette, combined with a smartphone to further increase the biosensor’s portability. The combination of the two greatly simplifies experimental operations, reduces testing costs, and can minimize matrix interferences through sample pre-treatment operations. And the smartphone-APP signal readout strategy can avoid the need for a reading instrument, making it more suitable for field testing. The FSCC was developed by fully utilizing the properties of a Fe-Zr-metal–organic framework (Fe-Zr-MOF), which exhibits high catalytic activity and enables the encapsulation of abundant horseradish peroxidase in its pores, the in-situ reduction and enrichment of Pt nanoparticles on its surface, and the coordination of biotinylated DNA to achieve a high adsorption capacity of streptavidin-horseradish peroxidase. This ensured detection sensitivity, with a limit of detection = 1.57 pg/mL. The developed biosensor displays notable application potential, especially in resource-poor areas due to the advantages of low costs, simple operation, ultra-high sensitivity, portability, etc.
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JOURNAL OF HAZARDOUS MATERIALS
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2023
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IF 13.6
Man-Man Wang,Zi-Ling Li,Han Wu,Ke-Yan Chen,Fan Guo,Gui-Fu Zuo,Yu He,Xue-Bo Yin
Magnetic solid-phase extraction (MSPE) was developed based on a well-designed Fe 3 O 4 -NH 2 @g-C 3 N 4 nanocomposite as sorbent for a mixture of six benzophenones (BPs) in environmental water samples. The composite fabricated via in-situ self-assembled g-C 3 N 4 shell with homogeneous polymerization of cyanuric chloride and cyanuric acid on Fe 3 O 4 -NH 2 core. While high adsorption capacity was derived from g-C 3 N 4 via hydrophobic, π-π and hydrogen bonding interactions to the targets, the fast magnetic separation was realized with Fe 3 O 4 core for less solvent consumption. In combination with LC-MS/MS, the Fe 3 O 4 -NH 2 @g-C 3 N 4 sorbent minimized the interfering components, reduced the matrix effects, and provided the enrichment factors of 121–150 for six BPs with relative standard deviations ≤ 9.7% even after 20 times extraction-desorption cycles. The present method gave the detection limits of 0.3–2.5 ng/L for six BPs with the linear ranges of 1.0–2000 ng/L, and the recoveries of 84.6%−104% in sea water and 86.2%−107% in lake water samples. Thus, the Fe 3 O 4 -NH 2 @g-C 3 N 4 -based MSPE coupled with LC-MS/MS method provided a convenient, efficient, and reliable alternative to monitor trace BPs in environmental water samples.
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JOURNAL OF THE ELECTROCHEMICAL SOCIETY
·
2018
·Vol. 165
·期 13
·C878
·
IF 3.662
Jingrong Liu,Yanhua Lei,Zhichao Qiu,Dongdong Li,Tao Liu,Fen Zhang,Shibin Sun,Xueting Chang,Runhua Fan,Yansheng Yin
The mechanism of polyaniline-grafted Graphene (PANI-Gr) nanosheets on the corrosion performance of zinc-rich epoxy primer (ZRP) coatings was studied. Highly crystalline PANI nanosheets were chemically synthesized on the modified Gr nanosheets and analyzed using Fourier transform infrared (FT-IR) spectroscopy, Raman spectroscopy and high-resolution transmission electron microscopy (HR-TEM). Different from the whole coating measurements via the open circuit potential and electrochemical impedance spectroscopy (EIS) measurements, herein, we focused on the corrosive characteristics at defect areas. Potential changes of the artificial defect-included samples and localized EIS of the defect area were conducted, to investigate the impact of the PANI-Gr fragments on corrosion process. The electrochemical results indicated that a mixture of Gr at a content of 0.6% enhanced the sacrificial cathodic protection of ZRP coating due to extending its active sacrificial period. Further, the most pronounced improvement in the ZRP properties was obtained through PANI-Gr modification. A synergetic enhancement of the coating physical barrier and zinc sacrificial cathodic protection was obtained in the case of ZRP including PANI-Gr nanosheets. Thus, this study suggests a new strategy for simultaneously providing the enhanced cathodic and barrier protection activities for ZRP.
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FOOD CONTROL
·
2025
·
IF 6.3
Weiqing Lan,Shuting Liu,Xuening Chen,Jing Xie
In this study, the effects of chitosan (CS)/polyvinyl alcohol (PVA)-based active film on lipid oxidation and myofibrillar proteins (MPs) oxidation and conformational changes in refrigerated (4 °C) sea bass ( Lateolabrax maculatus ) fillets were analyzed. The CS/PVA matrix combined with bacterial cellulose (BC) and 0.8 % (v/v) ginger essential oil (GEO), made the mixture form the film solution (CPB 0.8 ) by desiccation. Sea bass fillets coated with CS/PVA-based films were evaluated for lipid and protein oxidation at 3-day intervals. Ca 2+ -ATPase, total sulfhydryl, myofibril fragmentation index (MFI), and the secondary structure content were investigated to assess the oxidation degree and conformational changes in MPs. Malondialdehyde (MDA) and hydrogen peroxide (H 2 O 2 ) content were determined to evaluate the oxidation degree of sea bass fillets. Compared with other films, the results demonstrated that CPB 0.8 film could inhibit the oxidation and degradation of MPs after 18 days, which has the lowest MDA (86.44 nmol/g), Ca 2+ -ATPase (0.1567 U/mg), total sulfhydryl (53.7667 μmol/g), MFI (57.2). In addition, the conformational analysis of MPs showed that CPB 0.8 film could better maintain the secondary and tertiary structure of MPs, which effectively delay the destruction of protein conformation and maintain the microstructure of muscle fibers in fish. Therefore, CPB 0.8 film will be a hopeful strategy of keeping the quality of sea bass and have a long-term preservation effect.
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AQUACULTURE NUTRITION
·
2019
·Vol. 26
·期 3
·683-692
·
IF 2.098
Zequn Li,Xiaoqiang Xue,Huan Yang,Mingling Liao,Yuzhe Han,Zhiqiang Jiang,Tongjun Ren
This study was performed to determine the optimum dietary carbohydrate (CHO) levels of sea cucumber, based on the parameters of growth, digestive enzymes, digestibility, non-specific immune enzymes and acute low-salinity (20 g/L) stress and high-temperature (30°C) stress tolerance. Diets with eight different CHO (dextrin) levels (32.9, 107.6, 192.5, 257.2, 316.8, 428.0, 482.4 and 572.8 g/kg) were fed to sea cucumber juveniles (0.49 ± 0.01 g) for 60 days. Significant higher amylase activity was observed in sea cucumbers fed diet with CHO ranging between 32.9 and 192.5 g/kg than that of other treatments ( p < .05). The sea cucumbers fed with 192.5 g/kg CHO showed significantly higher acid phosphatase activity than the treatments of 482.4 and 572.8 g/kg CHO ( p < .05), and significantly higher alkaline phosphatase activity than other treatments ( p < .05, except 257.2 g/kg). The treatments of 428.0–572.8 g/kg were found significantly lower values than other treatments in apparent digestibility coefficients for dry matter and crude protein ( p < .05). The sea cucumbers fed with 192.5, 257.2 and 316.8 g/kg CHO showed better tolerance to high-temperature (30°C) and low-salinity (20 g/L) stress than other treatments. In brief, the optimal dietary CHO level for the growth of juvenile sea cucumber is 177.96 g/kg. However, excessive CHO will inhibit amylase enzyme activity and decrease digestibility, resulting in low growth of sea cucumber.
研究领域:
水产养殖学
·
海洋生物学
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MOLECULES
·
2021
·Vol. 26
·期 23
·7140
·
IF 4.412
Jingwen Chen,Yinxuan Li,Wenzheng Shi,Hui Zheng,Li Wang,Li Li
This study aimed to develop an active biodegradable bilayer film and to investigate the release behaviors of active compounds into different food matrices. Cinnamaldehyde (CI) or thymol (Ty) was encapsulated inβ-cyclodextrin (β-CD) to prepare the activeβ-CD inclusion complex (β-CD-CI/β-CD-Ty). The tilapia fish gelatin-sodium alginate composite (FGSA) containingβ-CD-CI orβ-CD-Ty was coated on the surface of PLA film to obtain the active bilayer film. Different food simulants including liquid food simulants (water, 3% acetic acid, 10% ethanol, and 95% ethanol), solid dry food simulant (modified polyphenylene oxide (Tenax TA)), and the real food (Japanese sea bass) were selected to investigate the release behaviors of bilayer films into different food matrixes. The results showed that the preparedβ-CD inclusion complexes distributed evenly in the cross-linking structure of FGSA and improved the thickness and water contact angle of the bilayer films. Active compounds possessed the lowest release rates in Tenax TA, compared to the release to liquid simulants and sea bass. CI and Ty sustained the release to the sea bass matrix with a similar behavior to the release to 95% ethanol. The bilayer film containingβ-CD-Ty exhibited stronger active antibacterial and antioxidant activities, probably due to the higher release efficiency of Ty in test mediums.Keywords:biodegradable bilayer film;tilapia fish gelatin;β-cyclodextrin inclusion complex;release kinetics;food simulants;active activities
研究领域:
食品科学
·
材料科学
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Foods
·
2026
·Vol. 15
·期 19
·3471
·
IF 6
Jingyi Huo,Meiduo Xue,Shengjun Chen,Yangli Chen,Yumeng Wei,Lijuan Xu,Meng Li,Xinru Fan,Soottawat Benjakul,Qiancheng Zhao
In this study, we used silver carp (Hypophthalmichthys molitrix) and sea cucumber (Apostichopus japonicus) as the primary protein sources and supplemented them with konjac glucomannan (KGM) or inulin (INU) at concentrations of 0%, 0.5%, 1.0%, and 1.5% to evaluate the gelling properties, textural characteristics, rheological behaviors, and in vitro digestibility of the resulting composite gels. The gastrointestinal digestion behavior, structural changes, and functional characteristics of these gels under simulated adult and elderly physiological conditions were also systematically investigated to clarify how different physiological stages influence their digestive fate. The results showed that incorporating KGM or INU modified hydrogen bonding and protein–polysaccharide interactions within the gel network, thereby regulating the structural integrity and rheological properties of the composite gels. According to the International Dysphagia Diet Standardization Initiative (IDDSI) framework, the KGM/INU-modified gels successfully passed the prescribed tests and were classified as level 4 (pureed/extremely thick) and level 6 (soft and bite-sized) foods, confirming their suitability for dysphagia management. Compared with the control group, the 0.5% KGM group showed the most desirable texture profile, with significantly lower hardness, chewiness, and adhesiveness, and higher cohesiveness (p< 0.05), while the 1.0% INU group exhibited the greatest enhancement in gel strength and viscoelasticity, as evidenced by the highest storage modulus (G′) and loss modulus (G″) (p< 0.05). Moreover, both adult and elderly in vitro digestion models showed extensive proteolysis of the composite gels, together with reduced protein aggregation, a looser microstructure in the digesta, and enhanced antioxidant capacity. Notably, the elderly model generally showed higher digestibility than the adult model, accompanied by greater release of free amino acids and antioxidant constituents (p< 0.05). Overall, these findings indicate that KGM/INU-modified composite gels possess promising potential as texture-modified foods, while the two in vitro physiological models provide a valuable platform for evaluating their digestion-related properties. KGM/INU-modified composite gels thus provide a promising platform for developing texture-modified, nutritionally fortified foods suitable for elderly individuals with swallowing impairments and adults who require safe, readily digestible dietary options.
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MARINE POLLUTION BULLETIN
·
2022
·
IF 7.001
Qian Wang,Hanwen Xu,Jie Yin,Shengnan Du,Caicai Liu,Juan-ying Li
The Yangtze River protection strategies are expected to improve the water quality and ecological function of the Yangtze River Estuary (YRE). The concentrations of 16 polycyclic aromatic hydrocarbons (PAHs) and 6 heavy metals (HMs) in the YRE were measured and the riverine fluxes were calculated subsequently. In particular, the concentrations of low molecular weight PAHs (LMW-PAHs), arsenic (As) and mercury (Hg) in seawater decreased over time, while those of other studied pollutants did not change a lot. In sediments, the concentration changes for all the pollutants were insignificant. For the present pollutants, the river input is the dominant source, and the flux decreased after the protection. The contribution of the discharge from wastewater treatment plants (WWTPs) was quantified. Its influence cannot be ignored. The seafood quality remained stable and the risk via diet was insignificant. Long-term monitoring is necessary, and the positive impact of the Protection Strategy is gradually emerging.
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Biology-Basel
·
2022
·Vol. 11
·期 4
·503
·
IF 5.168
Jingyun Ding,Huiyan Wang,Zequn Li,Jiangnan Sun,Peng Ding,Xiaomei Chi,Mingfang Yang,Yaqing Chang,Chong Zhao
Simple SummarySea urchins are key in the trophic cascades of benthic communities. They also possess physiological characteristics of low digestibility. Thus, we explored the relationship between the indicators (digestive enzymes activities and the gut emptying) and molecules (TRPA1 and 5-HT) related to digestive physiology in the sea urchinStrongylocentrotus intermedius. The results in the present study indicate that digestive enzyme activities and gut emptying are correlated with the TRPA1 and 5-HT in the gut ofS. intermedius.This novel finding not only is important for understanding the low food digestibility of sea urchins but provides an entry point to further investigate the molecular details of digestive physiology of sea urchins.AbstractThe energetic link in the benthic community is based on physiological characteristics of the low food absorption efficiency of sea urchins. Low food absorption efficiency of sea urchins is correlated with the activity of digestive enzymes and the duration of food in their gut. Thus, the digestive enzymes activities (pepsin and amylase enzyme activities) and gut emptying are important indicators in assessing nutrient digestion and absorption in sea urchins. In the present study, the relationship between these indicators and molecules related to digestive physiology were quantified in sea urchins. We found (1) an inter-regulatory relationship existed between Transient receptor potential cation channel, subfamily A, member 1 (TRPA1), and serotonin (5-hydroxytryptamine; 5-HT) in the gut ofStrongylocentrotus intermedius; (2) digestive enzyme activities were negatively correlated with the TRPA1 and concentration of 5-HT in the gut ofS. intermedius; (3) gut emptying rate was positively correlated with TRPA1 and concentration of 5-HT in the gut ofS. intermedius. The present study revealed that the digestion and absorption of food are correlated with the TRPA1 and 5-HT in the gut ofS. intermedius, which provides valuable information about the digestive physiology of sea urchins. This novel finding is relevant to understanding the low food digestibility of sea urchins. It also provides valuable information to the digestive physiology of sea urchins, which are key to maintaining the stability of food webs in the marine ecosystem.Keywords:sea urchin;TRPA1;5-HT;digestive enzyme;gut emptying
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危险品化学品经营许可证（带存储）