Foods
·
2024
·Vol. 13
·期 15
·2359
·
IF 4.7
Zhiheng Zhang,Haicheng Liang,Zichun Chai,Ting Wang
To improve the overall sensory evaluation of regular coffee, a mixture of β-CD/flavour CD powder was prepared by a freeze-drying method. Cyclodextrin inclusion complexes consist of eight compounds that are naturally present in coffee, specifically: 2,5-dimethylpyrazine, benzaldehyde, citral, linalool, limonene, phenethyl acetate, furfural, and ethyl acetate. These eight compounds naturally occur in coffee, making them safer than using other compounds. Moreover, these eight compounds are the primary active ingredients in coffee, significantly influencing its flavour profile. Therefore, choosing to complex these eight compounds with cyclodextrins can effectively enhance the taste of the coffee. XRD, FT-IR, and SDE-GC-FID were presented to study the formation of inclusion CD powder, the storage stability, chemical composition changes, and safety. Results show that by the cyclodextrin method of freeze-drying, the CD powder showed a stable encapsulated structure and increased stability of flavour compounds. Based on the coffee aroma analysis results, prepared CD powder can enhance the coffee’s aroma score by 3.0–4.0 points and increase the flavour score by 2.1–3.5 points, and it can achieve preservation for a minimum of 181 days at 25 °C. Furthermore, under the requirements of the China national standard for additives, the mixture of β-CD/flavour CD powder was used for the cup testing with four regular coffees to obtain improved coffees. With the full score is 10, improved coffees could score extra 3.0–4.0 points on aroma and 2.1–3.5 on flavour compared to regular coffee. In addition, the CD powder also improves the quality of the coffee in terms of aftertaste, body, and sweetness. Overall, β-CD/flavour CD powders provide several advantages over the currently popular coffee bean processing methods, including improved reproducibility, enhanced controllability, and increased flexibility, while prioritizing safety. And it should be explored further with appropriate compounds given its potential for coffee aroma modulation.
研究领域:
食品科学
·
化学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
ENVIRONMENTAL SCIENCE & TECHNOLOGY
·
2009
·
IF 4.458
Masaharu Murakami,Fumihiko Nakagawa,Noriharu Ae,Masashi Ito,Tomohito Arao
In accordance with a new international standard set by the Codex Alimentarius Commission for cadmium (Cd) content in rice grain, Japan must perform large-scale remediation of paddy fields polluted with low to moderate levels of Cd. Phytoextraction using hyperaccumulating wild plants has been proposed as a low-cost, environmentally friendly restoration technology. However, because of difficulties with sowing, weed and disease control, and harvesting, hyperaccumulators may not be suitable for large-scale phytoextraction in polluted paddy fields. Here, we demonstrated phytoextraction using Indica-type rice cultivars capable of accumulating Cd at high levels. Phytoextraction with the Indica rice Chokoukoku grown for 2 years without irrigation after drainage removed 883 g Cd ha−1, reduced the total soil Cd content by 38%, and reduced the grain Cd content in subsequently grown Japonica food rice by 47% without decreasing yield. The results suggest that phytoextraction with Chokoukoku can remove Cd from paddy fields polluted with low to moderate levels of Cd and reduce the grain Cd concentration of Japonica food rice cultivars to below the Codex standard within a reasonable time frame. This approach will help reduce the risk of Cd contamination of rice from paddy fields.
研究领域:
环境科学
·
农业科学
·
植物生物技术
·
土壤修复
✓ 已验证
DOI
高影响因子
JOURNAL OF HAZARDOUS MATERIALS
·
2023
·
IF 13.6
Bin Han,Jing Liu,Runliang Zhu,Qingze Chen
Clay minerals and iron (hydr)oxides are important geosorbents in controlling the migration of heavy metal cations in the environment. Despite the widespread occurrence of clay minerals/iron (hydr)oxides composites, their complex mutual effects on the fate of heavy metal cations are not well recognized. In this work, we investigated the effect of clay minerals on the redistribution of Cd(II) during the phase transformation of ferrihydrite containing coprecipitated Cd(II) (Cd-Fh). Three systems were considered: i.e., Cd-Fh, Cd-Fh/kaolinite composite, and Cd-Fh/montmorillonite composite. Our results showed that the transformation of Fh into goethite and hematite caused the release of Cd(II), while the presence of kaolinite and montmorillonite inhibited the phase transformation of Fh and the release of Cd(II), with montmorillonite being more effective in these process. Multiple factors contributed to the reduced release of Cd(II), including the retarded transformation of Fh, the buffering of solution pH, and the re-adsorption of the released Cd(II). Our findings show that clay minerals have multiple effects in reducing the release of heavy metal cations from Fh during its transformation process, which sheds new light on understanding the critical roles of nanominerals in modulating the migration and bioavailability of heavy metal cations in the environment.
研究领域:
环境科学
·
地球化学
·
土壤化学
·
纳米矿物学
·
重金属污染
✓ 已验证
DOI
高影响因子
ENVIRONMENTAL RESEARCH
·
2022
·
IF 8.431
Yan Deng,Shaodong Fu,Menglong Xu,Hongwei Liu,Luhua Jiang,Xueduan Liu,Huidan Jiang
The purification and water resource circulation utilization of cadmium-containing leachate is a key link in the field application of microbial remediation in Cd-polluted soil. In this study, through a simulation experiment of microbial remediation of Cd-polluted paddy soil , the feasibility of the purification and recycling process of wastewater derived from microbial remediation of Cd-polluted soil was explored. The results of the microbial mobilization and removal experiment showed that the concentrations of Cd, N, P, and K in the leachate were 88.51 μg/L, 38.06, 0.53, and 98.87 mg/L, respectively. The leachate also contained a large number of microbial resources , indicating that it had high recovery values. To recycle this wastewater, activated carbon (C), humic acid (H), and self-assembled monolayers on mesoporous supports (SAMMS; S) were used as adsorbents. The results showed that the co-existing cations in the leachate had a major influence on the adsorption of Cd. In the ternary system of Fe, Al, and Cd, the removal efficiency of Cd increased to 91.2% when the S dosage was increased to 5‰, and the sorption of Cd occurred after Fe and Al. However, C and H exhibited poor adsorption performances. The isotherm models further showed that the maximum adsorption capacities of S, H, and C were 13.96, 6.41 and 2.94 mg/g, respectively. The adsorption kinetics of S showed that adsorption was a rapid process, and the C–H and O–Si–O of S were the key functional groups. The pH of the leachate significantly affected the adsorption efficiency of Cd. Finally, the purified leachate was successfully applied to microbial cultivation and soil remediation . Overall, the reclamation of Cd-containing wastewater can not only dampen the impacts of water shortages, but also achieve the purposes of Cd removal and resource recovery to lower costs by approximately 1166–3499 yuan per mu.
研究领域:
环境科学
·
土壤学
·
水资源管理
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Carbohydrate Polymer Technologies and Applications
·
2025
·
IF 6.5
Hurong Ge,Peipei Ma,Qing Huang,Shijie Wei,Zhizhong Wang
Objectives: To study the encapsulation of resveratrol by three cyclodextrin derivatives, investigate the impact of encapsulation technology on its anti-fatigue effect, and explore the anti-fatigue mechanism of the encapsulated resveratrol via transcriptomics analysis of exosomal miRNAs. Methods (1) UV spectroscopy and nuclear magnetic resonance (NMR) were used to investigate the encapsulation and encapsulation modes of resveratrol by β -CD, HP- β -CD and CM- β -CD; and the phase solubility method was used to calculate the solubilisation multiplicity of resveratrol by the three cyclodextrin derivatives. (2) Male C57BL/6 J mice were randomly divided into: fatigue model group (FM), FM+resveratrol group (SF+Res), FM+ β -CD, FM+HP- β -CD, FM+CM- β -CD, FM+ β -CD+Res, FM+HP- β -CD+Res, FM+CM- β -CD +Res, and after 30 days of rearing, the mice were subjected to exhaustion swimming experiment to detect fatigue-related indexes and observe the effects of the three cyclodextrin derivatives on the anti-fatigue effects of resveratrol. (3) Male C57BL/6 J mice were randomly divided into Control, FM, and FM+HP- β -CD+Res. After 30 days of rearing, except for the Control group, the remaining mice were subjected to exhaustion swimming experiments, and exosomes were extracted from cardiac tissue, skeletal muscle tissue, and liver tissue of the three groups of mice, and the transcriptomics technology was applied to sequence the exosomal miRNAs and to explore the mechanism of the effect of the HP- β -CD+Res envelope on fatigue. Results (1) The inclusion ratios of β -CD, HP- β -CD, and CM- β -CD encapsulated resveratrol were 1:1, 1:2, and 1:1, and the solubilisation multiplicities of resveratrol were 23, 39, and 21 fold, respectively; β -CD and CM- β -CD encapsulated Res, which was the benzene ring with two hydroxyl‑terminal ends of Res entered the cavity from the small-ported end of the cyclodextrins; HP- β -CD encapsulated Res, which was the Res containing one hydroxyl‑terminated benzene ring enters the cavity from the wide-mouth end of HP-β-CD. (2) Compared with the FM+Res group, all three inclusions were able to prolong the exhaustion swimming time of mice, with HP- β -CD+Res being the most effective. (3) After HP- β -CD+Res acted on the fatigued mouse model, cardiac tissue showed 1726 differentially expressed exosomal miRNAs, of which 840 were up-regulated and 886 were down-regulated, reversing the fatigue-induced changes in 64.96 % of the exosomal miRNAs (1170 shared differential exosomal miRNAs); Skeletal muscle tissue showed 1948 differentially expressed exosomal miRNAs, of which 718 were up-regulated and 1230 were down-regulated, reversing 80.57 % of the fatigue-induced changes in exosomal miRNAs (1576 shared differential exosomal miRNAs); Liver tissue showed 1442 differentially expressed exosomal miRNAs, of which 451 were up-regulated and 991 were down-regulated, reversing 84.31 % of fatigue-induced changes in exosomal miRNAs (1214 shared differential exosomal miRNAs). Target gene enrichment analysis of differentially expressed exosomal miRNAs in cardiac tissue, skeletal muscle tissue, and liver tissue had similar results, and the biological processes involved in HP- β -CD+Res were related to biological_process, signal transduction, G protein-coupled receptor signaling pathway, etc., and cellular components such as membrane, cytoplasm, integral component of membrane, etc., and molecular functions are closely related to protein binding, metal ion binding, molecular_function, etc.; mainly enriched in Axon guidance, MicroRNAs in cancer, Apoptosis and other signalling pathways. Conclusions (1) All three cyclodextrin derivatives encapsulated increased the solubility of resveratrol, with HP- β -CD having the best effect. (2) All three cyclodextrin derivative encapsulation techniques improved the anti-fatigue effect of resveratrol, with HP- β -CD being the most effective. (3) HP- β -CD+Res was able to induce differential expression of exosomal miRNAs in cardiac tissue, skeletal muscle tissue and liver tissue of fatigued mice.
研究领域:
药理学
·
分子生物学
·
生物信息学
✓ 已验证
产品关联
DOI
高影响因子
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
·
2022
·
IF 8.025
Peng Zhang,Li Yuan,Jinyu Zeng,Kui Zou,Bingzhi Liu,Taiping Qing,Bo Feng
In this study, 7 Pseudomonas strains were isolated from a wastewater treatment plant, and the alginate production of Pseudomonas strains under different environmental conditions was evaluated. Subsequently, alginate-biomass hydrogel beads were prepared using alginate and biomass of Pseudomonas , and their adsorption performances and mechanism to Pb 2+ and Cd 2+ were analyzed. The results show that weakly acidic pH and 37 °C is favorable for alginate synthesis of Pseudomonas strains, and P. alcaligenes YLS18 have the highest alginate yield (29.4 mg/g). The adsorption processes of Pb 2+ and Cd 2+ by hydrogel beads are well described by Langmuir model, indicating that the adsorption process is monolayer. Among the biomass of these strains, P. nitroreducens YLB32 shows the highest biosorption capacities, reaching 110.7 mg/g for Pb 2+ and 54.3 mg/g for Cd 2+ at pH 5. Alginate-biomass hydrogel beads obtain higher adsorption capacity to Pb 2+ (184.0 mg/g) and Cd 2+ (92.4 mg/g), and exhibit good reusability. The adsorption mechanism of Pb 2+ and Cd 2+ by hydrogel beads involves physical tapping of ions, electrostatic interactions, complexation, cation exchange and precipitation. These results provide strong support for promoting alginate recovery from activated sludge and for treating heavy metal wastewater.
研究领域:
环境科学
·
微生物学
·
生物技术
✓ 已验证
DOI
PubMed
高影响因子
SCIENCE OF THE TOTAL ENVIRONMENT
·
2020
·
IF 6.551
Mengfan Lang,Xiaoqin Yu,Jiaheng Liu,Tianjiao Xia,Tiecheng Wang,Hanzhong Jia,Xuetao Guo
Microplastics released into the environment undergo a variety of aging processes, however, information about the influence of aging on the adsorption behavior of microplastics is limited. In order to better understand the effect of aging polystyrene (PS) on the ability to adsorb heavy metal, H 2 O 2 and Fenton reagent were used to investigate the aging properties of PS. Aging PS with these two different aging agents at pH = 4 and room temperature for the same time. Physical and chemical characterization indicated that aging caused oxidation of the surface of PS and the formation of surface micro-cracks. Based on the 2D-COS analysis, the aging process of PS functional groups could occur in the following sequence: 1375 (C-OH) > 1739 (C=O) > 1182 cm −1 (C−O−C) > 1716 (O−C=O). The adsorption experiments for Cd 2+ with two different concentrations were carried out by PS with different aging time at room temperature. The adsorption data showed that the adsorption capacity of Cd 2+ was significantly enhanced after aging compared with pristine PS, and the adsorption capacity of PS after Fenton aging treatment is much stronger than that after H 2 O 2 aging treatment. The kinetic analysis of the adsorption data indicates that the adsorption process is more consistent with the second-order kinetics than the first-order kinetics, and it is further concluded that the adsorption of Cd 2+ by PS is a relatively complicated process. According to the fitting results of adsorption isotherms, the adsorption process of pristine PS mainly occurs on the surface, but with the continuous aging, more adsorption sites may be exposed on the surface of PS, so it can be concluded that the adsorption mechanism of Cd 2+ by PS is the coexistence of physics and chemistry. This study indicates aging microplastics may have a significant impact on the destination and migration of metal contaminants, which deserves to be further concerned.
研究领域:
环境科学
·
化学
✓ 已验证
DOI
PubMed
高影响因子
JOURNAL OF HAZARDOUS MATERIALS
·
2025
·
IF 11.3
Nei Wu,Yuling Yang,Jianming Xu,Haizhen Wang
Heavy-metal-tolerant bacteria provide a sustainable, eco-friendly approach to remediate cadmium (Cd) contaminated soils, and elucidating their tolerance mechanisms is key for designing effective bio-remediation strategies. This study integrated whole-genome sequencing, untargeted metabolomics and multi-phenotypic analyses to reveal the Cd tolerance mechanisms and soil remediation effects of three plant-growth-promoting bacteria: Rhizobium sp. WW22, Burkholderia sp. WW13 and Pseudomonas sp. WW2. Results showed that three strains achieved Cd adsorption efficiencies of 60.27 %-99.56 % in 0.3–100 mg L-1 Cd solutions, with amino, carboxyl, hydroxyl, and amide groups on cell surfaces as major binding sites. They have evolved gene clusters related to metal transport/efflux and oxidative stress response, which synergistically maintain metabolic homeostasis under Cd stress. Among them, strain WW13 exhibited stronger Cd tolerance due to abundant unique gene clusters for antioxidant defense, siderophore synthesis, and putrescine metabolism. Notably, three strains showed convergent metabolic responses under Cd stress, with secretions (predominantly organic oxygen compounds, lipids/lipid-like molecules, benzenoids, and organoheterocyclic compounds) that significantly increased environmental pH. Key common upregulated secretions (itaconic acid, cis/trans-aconitic acid) increased soil pH by 0.01–0.32 units and reduced the proportion of exchangeable Cd by 2.22 %-9.19 % within 10 days. Pot experiments further confirmed that strains indirectly reduced Cd bioavailability by increasing soil pH, enriching hydroxyl/carboxyl/amino groups, regulating dissolved organic carbon/nitrogen, ammonium nitrogen, activities of β-glucosidase and N-acetyl-β- D -glucosaminidase. By day 14, the proportion of exchangeable Cd was reduced by 4.09 %-5.86 %. This study revealed multi-pathway Cd tolerance mechanisms in bacteria and their roles in soil Cd immobilization, providing theoretical basis and efficient strains for bioremediation of Cd-contaminated soils.
研究领域:
环境微生物学
·
土壤生物学
·
分子生态学
·
重金属污染修复
·
环境生物技术
·
代谢组学
·
植物-微生物互作
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Journal of the Taiwan Institute of Chemical Engineers
·
2020
·
IF 4.794
Heping Wang,Ting Wang,Rongrong Ma,Kai Wu,Honglan Li,Bang Feng,Cong Li,Yehua Shen
The sulfonated covalent organic frameworks (COF@SO 3 H) have been synthesized by a simple one-step solvothermal reaction and used to adsorb Cd 2+ , Co 2+ , and Cr 3+ metal ions from aqueous solution. The structure, composition and stability of as-prepared material were confirmed by FT-IR, PXRD, BET and TGA, and a fiber bundle-like COF@SO 3 H could be observed in the SEM and TEM images. The adsorption behaviors of Cd 2+ , Co 2+ , and Cr 3+ onto COF@SO 3 H were studied through batch adsorption experiments, and the obtained data were analyzed using various models. The adsorption process of the three ions can be better described by the Langmuir isotherm and the pseudo-second-order kinetics than other models tested, and the maximum adsorption capacities for Cd 2+ , Co 2+ and Cr 3+ at 298 K are 81.97, 77.52, and 105.26 mg g −1 , respectively. The thermodynamic parameters indicate that the adsorption of Cd 2+ onto COF@SO 3 H is spontaneous, which is more favorable than Co 2+ and Cr 3+ . Moreover, the adsorbed metal ions can be easily eluted by nitric acid or EDTA solution, and the COF@SO 3 H can be reused for more than 5 adsorption-elution cycles without obvious collapsing in structure and reducing in adsorption capacity. All the results suggested that the COF@SO 3 H could be used to the adsorption and removal of heavy metal ions from wastewater.
研究领域:
环境科学
·
材料科学
✓ 已验证
DOI
高影响因子
Chemistry-An Asian Journal
·
2023
·Vol. 18
·期 11
·e202300146
·
IF 4.1
Wen-ting Zhao,Huan Zhang,Ke Feng,Tian-yang Wang,Lei Han,Hai-feng Xing,Fei Huang,Wen-bo Wang
Graphical A feasible “one stone, three birds” strategy was developed to achieve simultaneously the harmless disposal and reutilization of waste acid-leaching liquid, the synthesis of new materials and the efficient decontamination of dye or Cd(II) pollutants, by converting Al, Mg-rich waste acid leachate into silicate adsorbent. The adsorbent showed excellent adsorption performance and reusability towards cationic dye and Cd(II) in real waters. An emerging “one stone, three birds” strategy was proposed to realize the value-added disposal of solid waste coal gangue (CG), the synthesis of superb adsorbent and the efficient decontamination of pollutants (i. e., dyes, heavy metals). In this process, the metal ions extrated from calcined coal gangue (CCG) was reconstituted by a one-step hydrothermal process to yield porous polymetallic silicate adsorbent (named HECCGA8h). The adsorbent has a high adsorption capacity of 270.27 and 185.53 mg/g for methylene blue (MB) and Cd(II), respectively. In the actual waters, the removal rate of MB by this adsorbent reaches 99.8% (in Yangtze River water) and 99.42% (in Seawater), and the removal rate of Cd(II) reaches 99.11% (in Yangtze River water) and 92.52% (in Seawater), respectively. Thermokinetic analysis showed that the adsorption of MB by HECCGA8h is spontaneous and endothermic with increased entropy, and the adsorption of Cd(II) is spontaneous and exothermic. The adsorption of MB is mainly driven by synergism of hydrogen bond, electrostatic attraction and ion exchange, and the adsorption of Cd(II) is mainly driven by the complexation and ion exchange between the surface group of the adsorbent and Cd(II). This research provides a new way for the realization of “treating waste with waste”.
研究领域:
环境科学
·
材料科学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Environmental Pollutants and Bioavailability
·
2025
·
IF 3.2
Hongchuan Li,Yusef Kianpoor Kalkhajeh,Peidong Cong,Jianjun Liu,Hongxiang Hu,Fuxiang Li
This study investigated the efficacy of GLDA (C9H9NNa4O8) for the remediation of moderately Cd-contaminated soil (total Cd, 0.47 mg/kg). A 50-day pot experiment was carried out with T. patula (Tagetes patula L.) subjected to five GLDA treatments (0, 0.25, 0.5, 1 and 2 mmol/kg). The GLDA doses were administered in two equal parts, with a 15-day time interval between them. Our results indicated that GLDA treatments significantly increased the Cd content in the aboveground and root of T. patula, as well as soil pH and soil DTPA-Cd content compared with the control treatment (CK) (P < 0.05). Under 2 mmol/kg, an average reduction of 9.85% occurred in soil Cd content compared with the CK. Furthermore, GLDA enhanced the transformation of residual and organic-bound Cd into exchangeable and iron-manganese oxide forms. At concentrations of 0 and 0.25 mmol/kg, GLDA increased the richness of soil bacterial communities, whereas inhibition occurred at higher application rates (1 and 2 mmol/kg). The Chao1 and Shannon indices of 1 and 0.5 mmol/kg significantly increased by 29.9% and 7.98%, respectively, compared with the CK (P < 0.05). Proteobacteria, Acidobacteria, Chloroflexia, and Myxococcota were the dominant bacterial phyla in Cd remediation by T. patula induced by GLDA, reflecting their high tolerance to Cd contamination. Altogether, this study elucidates how GLDA enhances Cd remediation through its impacts on soil Cd mobility/fractionation and soil microbial composition, presenting a novel and sustainable/ecofriendly phytoremediation strategy for moderately Cd-contaminated soils.
研究领域:
环境科学
·
土壤修复
·
植物修复
·
微生物生态学
·
重金属污染
✓ 已验证
产品关联
DOI
高影响因子
Journal of Inorganic and Organometallic Polymers and Materials
·
2024
·
IF 3.9
Xu Mengxia,Wu Rao,Wang Shengqian,Xu Hualan,Zhong Shengliang
The preparation of coordination polymers with good room temperature phosphorescence is the focus of current research. In this paper, zinc and cadmium were used as metal ions and 2,3-pyridinedicarboxylic acid (H 2 L = 2,3-pyridinedicarboxylic acid) was used as organic ligands to successfully synthesize Cd (II) homometallic [CdL]·H 2 O and Zn(II)Cd(II) heterometallic [ZnCdL 2 ]·DMF·5H 2 O coordination polymers microstructures. In addition, morphology, powder X-ray diffraction (PXRD), infrared spectroscopy (IR), elemental analyses, thermogravimetric analysis (TGA) and their luminescence properties were studied. Cd-CP is a micron-sized spherical structure, while Zn/Cd-CP is a flower-like structure formed by the accumulation of sheets. The results show that Cd(II) homo- and Zn(II)Cd(II) heterometallic coordination polymers have quantum yields of 10.05% and 8.54%, respectively. It is worth noting that the lifetime of Cd-CP is 124.62 ms, while the lifetime of Zn/Cd-CP is significantly extended to 363.09 ms after doping with metal ion Zn 2+ . The phosphorescent lifetime of coordination polymers was improved by the heterometallic doping strategy, which provided a new idea and method for the preparation of coordination polymers with long-lived room temperature phosphorescent properties. In addition, the two coordination polymers exhibited blue and cyan fluorescence at 365 nm UV light, respectively, and a green afterglow of about 2 s could be observed with the naked eye when the UV lamp was turned off.
研究领域:
材料科学
·
化学
✓ 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）