期刊:
International Journal of Biological Macromolecules,2024年:128787 ISSN:0141-8130
通讯作者:
Chen, Xu;Li, Shuyi
作者机构:
[Gao, Xiaomei; Cheng, Shuiyuan; Li, Shuyi; Zhu, Zhenzhou; Guo, Ziqi; Chen, Xu; Xiang, Hongxia] School of Modern Industry for Selenium Science and Engineering, Wuhan Polytechnic University, Wuhan 430205, PR China;[Gao, Xiaomei; Cheng, Shuiyuan; Li, Shuyi; Zhu, Zhenzhou; Guo, Ziqi; Chen, Xu; Xiang, Hongxia] National R&D center for Se-rich Agricultural Products Processing, Wuhan Polytechnic University, Wuhan 430023, PR China;[Gao, Xiaomei; Cheng, Shuiyuan; Zhu, Zhenzhou; Guo, Ziqi; Xiang, Hongxia] Hubei Engineering Research Center for Deep Processing of Green Se-rich Agricultural Products, Wuhan 430023, PR China;[Chen, Xu] Hubei Engineering Research Center for Deep Processing of Green Se-rich Agricultural Products, Wuhan 430023, PR China. Electronic address: chxu@whpu.edu.cn;[Li, Shuyi] Hubei Engineering Research Center for Deep Processing of Green Se-rich Agricultural Products, Wuhan 430023, PR China. Electronic address: lishuyisz@sina.com
通讯机构:
[Chen, Xu; Li, Shuyi] H;Hubei Engineering Research Center for Deep Processing of Green Se-rich Agricultural Products, Wuhan 430023, PR China. Electronic address:
摘要:
pH-responsive intelligent films for food freshness monitoring have attracted great attentions recently. In this study, several intelligent films based on chitosan (CS), polyvinyl alcohol (PVA), and grape skin anthocyanin (GSA) were prepared, and the effect of film-forming solution pH on the properties of intelligent films was investigated. The results of SEM, FTIR, XRD and TGA displayed that the hydrogen bond between CS and GSA was strong at strong acidic conditions (2.0-2.5), and it weakened at weak acidic conditions (3.0-4.5). Meanwhile, the hydrogen bond between PVA and GSA was negligible under strong acidic conditions, and it appeared under weak acidic conditions. Consequently, the films fabricated under weak acidic conditions displayed lower water solubility, lower water vapor permeability, and higher elongation at break. The tensile strength of films increased firstly and subsequently decreased with pH increasing, reaching a maximum value of 31.44 MPa at pH 3.5. Additionally, the films prepared at pH 2.5 and 4.0 showed the best color responsiveness to ammonia and acetic acid, respectively. Overall, the intelligent films prepared under variant pH have the potential to realize the goal of monitoring the freshness of different types of food, thereby expanding the application subject of anthocyanins-based intelligent films.
作者机构:
[Yang, Zheng; Xiao, Xianjin; Mu, Yaoqin; Xiao, XJ; Yan, Bei; Zhang, Lei; Fan, Heng] Huazhong Univ Sci & Technol, Inst Reprod Hlth, Tongji Med Coll, Wuhan 430030, Peoples R China.;[Pei, Chengbin; Yan, Bei; Zhou, Yue] Ningxia Med Univ, Gen Hosp, Inst Med Sci, Ningxia Human Sperm Bank, Yinchuan 750004, Peoples R China.;[Li, Longjie] Wuhan Polytech Univ, Sch Life Sci & Technol, Wuhan 430023, Peoples R China.;[Xiao, Xianjin; Xiao, XJ] Hunan Normal Univ, Changsha Hosp Maternal & Child Hlth Care, Hunan Prov Key Lab Reg Hereditary Birth Defects Pr, Changsha, Peoples R China.
通讯机构:
[Li, LJ ] W;[Xiao, XJ ] H;Huazhong Univ Sci & Technol, Inst Reprod Hlth, Tongji Med Coll, Wuhan 430030, Peoples R China.;Wuhan Polytech Univ, Sch Life Sci & Technol, Wuhan 430023, Peoples R China.;Hunan Normal Univ, Changsha Hosp Maternal & Child Hlth Care, Hunan Prov Key Lab Reg Hereditary Birth Defects Pr, Changsha, Peoples R China.
摘要:
Sperm DNA fragmentation is a sign of sperm nuclear damage. The sperm chromatin dispersion (SCD) test is a reliable and economical method for the evaluation of DNA fragmentation. However, the cut-off value for differentiation of DNA fragmented sperms is fixed at 1/3 with limited statistical justification, making the SCD test a semi-quantitative method that gives user-dependent results. We construct a collection of deep neural networks to automate the evaluation of bright-field images for SCD tests. The model can detect valid sperm nuclei and their locations from the input images captured with a 20x objective and predict the geometric parameters of the halo ring. We construct an annotated dataset consisting of N = 3120 images. The ResNet 18 based network reaches an average precision (AP(50)) of 91.3%, a true positive rate of 96.67%, and a true negative rate of 96.72%. The distribution of relative halo radii is fit to the multi-peak Gaussian function (p > 0.99). DNA fragmentation is regarded as those with a relative halo radius 1.6 standard deviations smaller than the mean of a normal cluster. In conclusion, we have established a deep neural network based model for the automation and quantification of the SCD test that is ready for clinical application. The DNA fragmentation index is determined using Gaussian clustering, reflecting the natural distribution of halo geometry and is more tolerable to disturbances and sample conditions, which we believe will greatly improve the clinical significance of the SCD test.
摘要:
BACKGROUND: This study reported a canola meal-based biochar adsorbent for highly efficient organic dyes removal. SEM, BET, Zeta-potential and XPS etc. were employed to characterize the micro-structure and chemical composition of the biochar, demonstrating the impact of compression treatment on its inner pore structure.RESULTS: KOH-activated carbonized canola meal-compressed (KCCM-C) showed a high specific surface area of up to 2135 m(2) g(-1) with an average pore size of 2.65 nm, which exhibited excellent adsorption capacity for both positively and negatively charged dyes with maximum values of 985 mg g(-1) and 813 mg g(-1) for methylene blue (MB) and methyl orange (MO) respectively, exceeding majority of the biochar adsorbents reported so far. The dye adsorption behavior was dominated by monolayer coverage with both physical adsorption and chemisorption. Langmuir isotherm model fitted well with the adsorption data, and the adsorption kinetic followed the pseudo-second-order model. Negative Gibbs free energy and positive enthalpy change indicated that the adsorption was a spontaneous endothermic process. XPS analysis indicated that the amino groups of proteins inside the canola meal as the active sites were oxidated by KOH prior to other components, while the compact structure of compressed canola meal was more conducive to the formation of uniform meso-pores inside canola meal-derived biochar improving its adsorption performance.CONCLUSIONS: This high-quality porous biochar, directly synthesized from the compressed canola meal, simplifies the grinding process and presents a valuable opportunity for the value-added application of canola meal.(c) 2023 Society of Chemical Industry (SCI).
摘要:
Weeds are a significant threat to agricultural productivity and the environment. The increasing demand for sustainable weed control practices has driven innovative developments in alternative weed control technologies aimed at reducing the reliance on herbicides. The barrier to adoption of these technologies for selective in-crop use is availability of suitably effective weed recognition. With the great success of deep learning in various vision tasks, many promising image-based weed detection algorithms have been developed. This paper reviews recent developments of deep learning techniques in the field of image-based weed detection. The review begins with an introduction to the fundamentals of deep learning related to weed detection. Next, recent advancements in deep weed detection are reviewed with the discussion of the research materials including public weed datasets. Finally, the challenges of developing practically deployable weed detection methods are summarized, together with the discussions of the opportunities for future research. We hope that this review will provide a timely survey of the field and attract more researchers to address this inter-disciplinary research problem.
作者机构:
[Gao, Pan] Key Laboratory of Edible Oil Quality and Safety for State Market Regulation, Key Laboratory for Deep Processing of Major Grain and Oil of Ministry of Education in China, College of Food Science and Engineering, Wuhan Polytechnic University, Wuhan, PR China. Electronic address: gaopan925@163.com;[He, Dongping; Liu, Ying; Yin, Jiaojiao; Zhong, Wu; Huang, Chuanyang; Hu, Chuanrong] Key Laboratory of Edible Oil Quality and Safety for State Market Regulation, Key Laboratory for Deep Processing of Major Grain and Oil of Ministry of Education in China, College of Food Science and Engineering, Wuhan Polytechnic University, Wuhan, PR China;[Wang, Shu] Key Laboratory of Edible Oil Quality and Safety for State Market Regulation, Wuhan Institute for Food and Cosmetic Control, Wuhan, PR China;[Wang, Xingguo] International Joint Research Laboratory for Lipid Nutrition and Safety, School of Food Science and Technology, Jiangnan University, Wuxi, PR China
通讯机构:
[Gao, Pan] K;Key Laboratory of Edible Oil Quality and Safety for State Market Regulation, Key Laboratory for Deep Processing of Major Grain and Oil of Ministry of Education in China, College of Food Science and Engineering, Wuhan Polytechnic University, Wuhan, PR China. Electronic address:
摘要:
In this study, we compared the quality of iron walnut oil (IWO) oleogels prepared with different oleogelators, including γ-oryzanol/β-sitosterol (OZ-PS), γ-oryzanol/triglyceride (OZ-TC), monoglycerides (MGS), beeswax (BW), beeswax-monoglycerides (BW-MGS), and carnauba wax (CW). The physicochemical and component properties, rheological and textural parameters, macroscopic morphologies, and antioxidant capacities of the resulting oleogels were analyzed. In addition, their microscopic properties were analyzed using Fourier-transform infrared (FTIR), X-ray powder diffraction (XRD) spectroscopy, and polarized light microscopy (PLM). The results showed that the gel structures produced by different oleogelators did not change the fatty acid composition of IWO. In addition, the IWO oleogel prepared with OZ-PS had a more stable network structure, excellent hardness at 4℃ (1116.51g), better antioxidant capacity (766.50μmol TE/kg) and higher total phenolic content (14.98mg/kg) than any other experimental IWO oleogels. Moreover, comprehensive ranking by principal component analysis of numerous characteristics showed that the OZ-PS oleogel (2.533) ranked first among the six oleogels studied. Therefore, the IWO oleogel prepared with OZ-PS is a promising product, and our results provide guidance for the preparation of IWO oleogels, such as to increase their applications in the food industry.
期刊:
International journal of biological macromolecules,2024年257(Pt 1):128552
通讯作者:
Tao, Yubo;Li, Peng
作者机构:
[Yin, Qing; Du, Jinbao; Pan, Ling; Li, Peng] State Key Laboratory of Biobased Material and Green Papermaking, Qilu University of Technology (Shandong Academy of Sciences), Jinan 250353, China;[Pan, Ling] School of Art and Design, Wuhan Polytechnic University, Wuhan 43004, China;[Pan, Ling] College of Material Science and Engineering, Northeast Forestry University, Harbin, Heilongjiang 150040, China;[Tao, Yubo] State Key Laboratory of Biobased Material and Green Papermaking, Qilu University of Technology (Shandong Academy of Sciences), Jinan 250353, China. Electronic address: taoyubo@qlu.edu.cn;[Li, Peng] College of Material Science and Engineering, Northeast Forestry University, Harbin, Heilongjiang 150040, China. Electronic address: lipeng@qlu.edu.cn
通讯机构:
[Tao, Yubo] S;[Li, Peng] C;State Key Laboratory of Biobased Material and Green Papermaking, Qilu University of Technology (Shandong Academy of Sciences), Jinan 250353, China. Electronic address:;College of Material Science and Engineering, Northeast Forestry University, Harbin, Heilongjiang 150040, China. Electronic address:
摘要:
Foods and beverages with excessive tannins acid (TA) content taste astringent and bitter. The overconsumption of TA could result in nutritional and digestive problems. In this study, the cellulose nanocrystals (CNC)/fish swim bladder gelatin (FG) composite sponge was prepared with glutaraldehyde as a crosslinking agent. The TA adsorption performance of the sponge was discussed. The freeze-dried CNC/FG composite sponge had a porous network structure. CNC was combined into the FG matrix as a reinforcing phase. The mechanical strength, thermal stability, and swelling properties of the composite sponge were improved with the addition of an appropriate amount of CNC. Although CNC decreased the porosity of composite sponge, the increase in active adsorption sites resulted in an overall positive effect on its TA adsorption properties. Under the optimal adsorption conditions, the TA removal rate of 1.0% CNC composites reached 80.4%. Furthermore, the sponge retained a TA removal rate of 54% after five cycles of adsorption and desorption using 50% ethanol. The results demonstrated that CNC/FG composite sponge has application potential in the field of adsorption materials for TA.
期刊:
International Journal of Biological Macromolecules,2024年257(Pt 1):128524 ISSN:0141-8130
通讯作者:
Wu, Qian;Wang, Chao
作者机构:
[Wang, Jingyi; Wang, Chao; Zhang, Xue; Yang, Jun; Wu, Qian; Yu, Zuwei] Cooperative Innovation Center of Industrial Fermentation (Ministry of Education & Hubei Province), Hubei University of Technology, Wuhan 430068, China;[Wang, Jingyi; Zhang, Xue; Yang, Jun; Yu, Zuwei] College of Bioengineering and Food, Hubei University of Technology, Wuhan 430068, China;[Luo, Yufan] College of Bioengineering and Food, Hubei University of Technology, Wuhan 430068, China;[Wu, Muci] School of Modern Industry for Selenium Science and Engineering, Wuhan Polytechnic University, Wuhan, 430023, China;[Wu, Qian] College of Bioengineering and Food, Hubei University of Technology, Wuhan 430068, China. Electronic address: wuqian@hbut.edu.cn
通讯机构:
[Wu, Qian; Wang, Chao] C;College of Bioengineering and Food, Hubei University of Technology, Wuhan 430068, China. Electronic address:
关键词:
Feruloylated arabinoxylan;Pea starch;Processing and digestibility properties
摘要:
In this study, arabinoxylans (AX) with various molecular weights (M(w)) and bound ferulic acid (FA) contents were prepared to compare their effects on the gelatinization, short-term retrogradation and digestive properties of pea starch (PeS). The results indicated that all AX samples could obviously impede the pasting process of PeS and inhibit the short-term retrogradation of PeS-based gels during refrigeration by hindering the rearrangement and double helical associations of amylose. More precisely, AXs with low M(w) and the highest FA content (H-FAX) exhibited the strongest intervention ability on PeS compared with the other samples. According to the Fourier transform infrared spectroscopy and X-ray diffraction results, it might be due to the unique role of bound FA as a noncovalent cross-linking agent, which enhanced the association between AX and starch molecules through extra hydrogen bonding interactions and entanglement behaviour. On these bases, H-FAX clearly improved the hardness, chewiness, moisture content, and sensory acceptance of PeS-base gels (pea jelly), and could also regulate its starch composition during short-term refrigeration to delay starch digestion. Overall, AXs with appropriate structural features might obviously improve the quality and storage stability of PeS-based foods.
作者机构:
[Hu, Tao; Gong, Xinghou; Wu, Chonggang; Guo, Lei; Zhu, Chuanhui; Zheng, Xuan] Hubei Provincial Key Laboratory of Green Materials for Light Industry, School of Materials and Chemical Engineering, Hubei University of Technology, Wuhan 436800, China;[Zheng, Xuan] Hubei Longzhong Laboratory, Xiangyang 441000, China. Electronic address: zx88@hbut.edu.cn;[Hu, Tao; Gong, Xinghou; Wu, Chonggang] Hubei Longzhong Laboratory, Xiangyang 441000, China;[Wang, Guangjin] School of Materials Science and Energy Engineering, Foshan University, Foshan 52800, China. Electronic address: wgj501@163.com;[Dong, Hao] College of Light Industry and Food Technology, Zhongkai University of Agriculture and Engineering, Guangzhou 510225, China. Electronic address: donghao@zhku.edu.cn
通讯机构:
[Zheng, Xuan] H;[Wang, Guangjin] S;[Dong, Hao] C;Hubei Longzhong Laboratory, Xiangyang 441000, China. Electronic address:;School of Materials Science and Energy Engineering, Foshan University, Foshan 52800, China. Electronic address:
关键词:
Ag nanowires;Biosensor;Food safety;MoS(2);Pesticide
摘要:
Thiabendazole (TBZ), a highly toxic phosphorothioate insecticide commonly used in postharvest fruit management, has the potential to cause detrimental effects on human health as an endocrine disruptor. In this study, an electrochemical sensor was developed to detect TBZ by modifying MoS(2) on silver nanowires (Ag NWs@MoS(2)) and integrating them onto a glassy carbon surface. Cyclic voltammetry revealed that TBZ underwent an irreversible, diffusion-controlled process on Ag NWs@MoS(2), leading to a two-fold increase in peak current compared to unmodified MoS(2). Square wave voltammetry facilitated TBZ detection, and the sensor exhibited a linear range of 0.05-10μM with a high coefficient of determination (R(2)=0.9958) and a limit of detection (LOD) of 1.75nM (signal-to-noise ratio=3). The sensor's applicability for food safety monitoring was verified through TBZ analysis in pear and apple samples, achieving recoveries of 95.5-103.6% with RSDs in the range of 1.98-3.25%.
作者机构:
[Wan, Ziliang; Xu, Changhao; Zheng, Mingming] School of Chemical and Environmental Engineering, Wuhan Polytechnic University, Wuhan, 430023, China;[Cao, Menghua] College of Resources and Environment, Huazhong Agricultural University, Wuhan, 430070, China. Electronic address: caomenghua@mail.hzau.edu.cn;[Chen, Nan; Xu, Ke] Hubei Environmental Monitoring Center, Wuhan, 430072, China
通讯机构:
[Cao, Menghua] C;College of Resources and Environment, Huazhong Agricultural University, Wuhan, 430070, China. Electronic address:
摘要:
Ammonia control has attracted attention due to the possibility for fine particles (PM(2.5)) mitigation. Based on past decade ammonia emissions assessments and future predictions, this study seasonally evaluated the ammonia emissions reduction potential in 2025 and 2030 in Wuhan, a Central China megacity, according to the short-term and long-term predictable policies. Furthermore, combined with the reduction potential, PM(2.5) components observation and thermodynamic model, the effectiveness of implementing ammonia emission control to reduce PM(2.5) by 2025 and 2030 was explored seasonally. Results indicated that the total ammonia emissions are expected to decrease by 19.6-33.9% in 2025 and 2030 under positive reduction scenarios, or increase by 8.9-11.7% in the absence of any intervention. Livestock holds the largest potential for reducing ammonia emissions accounting for 46.4-52.5% of the total. Improvement of human excrement management in rural regions also contributes a 35-37% potential. Despite the implementation of exhaust requirements, ammonia emissions from vehicles in 2030 are expected to continue to increase by 55.3% and 23.5% under the regular (S1) and enhanced (S2) reduction strategy scenarios, respectively. Seasonally, the most potential source of ammonia reduction in spring, summer and fall remains livestock. While in winter, non-agricultural sources dominate the reduction potential. Further results indicated that by ammonia control is expected to decrease PM(2.5) concentration up to 5% (less than 1 μg m(-3)) in 2025-2030. Despite the better effectiveness in winter, ammonia control won't be an effective way to reduce PM(2.5) in Central China in future, from the management policies and areal ammonia-rich conditions.
摘要:
Fungal symbionts can improve plant tolerance to salt stress. However, the interaction of epiphytic Fusarium oxysporum and Fusarium fujikuroi with the tolerance of the invasive plant Ipomoea cairica against saline coastal habitats is largely unknown. This study aimed to investigate the interaction of the mixture of the two epiphytic fungi with salt tolerance of I. cairica. Surface-sterilized I. cairica cuttings inoculated (E+) and non-inoculated (E-) with the fungal mixture were cultivated with 2, 3, and 5 parts per thousand (PPT) of NaCl solutions to simulate mild, moderate, and severe salt stress, respectively. The hydroponic experiment showed that the growth inhibition and peroxidation damages of E+ and E- cuttings were aggravated with salinity. Noteworthily, E+ cuttings had higher peroxidase (POD) and catalase (CAT) activities, chlorophyll content, total biomass, aboveground biomass, total shoot length and secondary shoot number, but lower root-to-shoot ratio than E- cuttings under 2 and 3 PPT NaCl conditions. Moreover, E+ had higher superoxide dismutase (SOD) activity and proline content but lower belowground biomass and malondialdehyde (MDA) content than E- cuttings under 3 PPT NaCl condition. However, lower SOD, POD, and CAT activities, and chlorophyll content, but higher MDA content occurred in E+ cuttings than in E- cuttings under 5 PPT NaCl condition. These findings suggested that the mixture of the two epiphytic fungi increased salt tolerance of I. cairica mainly through increasing its antioxidation ability and chlorophyll stability under mildly and moderately saline conditions, but decreased salt tolerance of this plant in an opposite way under severely saline conditions.
期刊:
Journal of Hazardous Materials,2024年465:133198 ISSN:0304-3894
通讯作者:
Lan, Jirong
作者机构:
[Pan, Cong; Lan, Jirong; Hou, Haobo] School of Resource and Environmental Sciences, Wuhan University, 430072, China;[Sun, Yan; Kai, Ming-Feng] Department of Civil and Environmental Engineering, The Hong Kong Polytechnic University, Kowloon, Hong Kong, China;[Dong, Yiqie] School of Civil Engineering and Architecture, Wuhan Polytechnic University, Wuhan 430023, China;[Lan, Jirong] Department of Civil and Environmental Engineering, The Hong Kong Polytechnic University, Kowloon, Hong Kong, China. Electronic address: lanjirong3636@126.com
通讯机构:
[Lan, Jirong] D;Department of Civil and Environmental Engineering, The Hong Kong Polytechnic University, Kowloon, Hong Kong, China. Electronic address:
关键词:
Amorphous structure;CSWR/PMS system;Carbamazepine;Copper tailing;High value application
摘要:
It is a green and sustainable path to establish cheap solid waste-based catalyst to establish peroxymonosulfate (PMS) catalytic system for the degradation of carbamazepine (CBZ) in water. In this study, durable copper tailing waste residue-based catalyst (CSWR) was prepared, and efficient CSWR/PMS system was constructed for catalytic degradation of CBZ for first time. The morphology and structure of CSWR changed from clumps to porous and loose amorphous by alkali leaching and medium temperature calcination. The reconstructed surface of the CSWR exposes more active sites promotes the catalytic reaction and increases the degradation rate of CBZ by more than 39.8 times. And the CSWR/PMS achieved a CBZ removal of nearly 99.99 % in 20min. In particular, perovskite-type iron-calcium compounds were formed, which stimulated the production of more HO(•) and SO(4)(•-) in the system. DFT calculation shows that CSWR has stronger adsorption energy and electron transfer ability to PMS molecules, which improved the degradation efficiency of the system. In general, this study proposed a means of high-value waste utilization, which provided a new idea for the preparation of solid waste based environmental functional materials and is expected to be widely used in practical wastewater treatment.
通讯机构:
[Huang, D ] C;Changan Univ, Coll Geol Engn & Geomat, Xian 710054, Peoples R China.
关键词:
Discontinuity;Shear behavior;Failure pattern;Unloading normal stress;Shear strength criteria
摘要:
The shear mechanical behavior of discontinuities under unloading conditions induced by intensive rock mass excavation differs from that under loading conditions. Therefore, the mechanical parameters obtained from the conventional direct shear test cannot effectively be used to assess the stability of excavated rock masses. To solve this problem, we conducted a series of experiments on saw-toothed discontinuities with different undulating angles and initial shear stresses under unloading normal stress with constant shear stress. The test results showed that the shear pattern transformed from climbing to climbing-gnawing and then to gnawing patterns as the undulating angle and initial shear stress increased. The shear stress remained stable with increasing shear displacement after instability in the climbing pattern, decreased with fluctuations in the climbing-gnawing pattern, and dropped steeply in the gnawing pattern. A negative linear correlation exists between the unloading magnitude and the initial shear stress. Unloading normal stress promoted deformation rebound and sawtooth damage, reducing the mobilizing shear strength. Modified Patton and Barton shear strength criteria considering the undulating angle, initial stress, and failure pattern under unloading normal stress were proposed. The shear mechanical behavior of saw-toothed discontinuities with different undulating angles and initial shear stresses under unloading normal stress with constant shear stress are investigated.The failure pattern changes from the climbing pattern to the climbing-gnawing pattern and then to the gnawing pattern as the undulating angle and the initial shear stress increase.Unloading promotes the increase in rebound deformation and the area of the damage zone, leading to the decrease in shear strength of saw-toothed discontinuities.The modified Patton criterion and the Barton criterion are proposed for unloading normal stress considering the undulating angle, initial stress state, and failure pattern.
摘要:
This study proposed a new curing agent consisting of slag and desulfurization gypsum industrial waste to solidify Cr(VI)-contaminated soils and prevent its migration and bioaccumulation in the ecosphere. The curing agent dosage of 10-30% resulted in a Cr(VI) toxic leaching concentration, compressive strength, and hydraulic conductivity range of 0.118-5.824 mg/L, 2.70-10.22 MPa, and 1.70 x 10-9-1.37 x 10-6 cm/s, respectively. Following four dry and wet cycles, the dosage of the curing agent was found to be 20-30% to achieve minimum environmental safety requirements. Cr(VI) in the cured specimens mainly existed as CrO42-, or acid salt, in which a portion was changed to Cr(III) during precipitation or directly was encased in the silica-alumina mesh structure. The adsorption capacity of hexavalent chrome on the outer of the hydration product groups was insignificant owing to the electronegativity. Hence, the Cr(VI) was solidified by hydrides such as C-S(A)-H and calcium alumina inclusions. Calcite, quartz, and several zeolite-like substances were also found to be colloidal in the pores to block Cr(VI).
期刊:
International Journal of Biological Macromolecules,2024年257(Pt 2):128692 ISSN:0141-8130
通讯作者:
Chen, Xiaoqiang
作者机构:
[Cheng, Shuiyuan; Chen, Xiaoqiang] School of Life Science and Technology, Wuhan Polytechnic University, Wuhan 430023, China;[Chen, Xiaoqiang] Cooperative Innovation Center of Industrial Fermentation (Ministry of Education & Hubei Province), Key Laboratory of Fermentation Engineering (Ministry of Education), Hubei University of Technology, Wuhan 430068, China. Electronic address: biomed528@163.com;[Li, Mengyang; Xiao, Yuan; Shao, Ruixiang] Cooperative Innovation Center of Industrial Fermentation (Ministry of Education & Hubei Province), Key Laboratory of Fermentation Engineering (Ministry of Education), Hubei University of Technology, Wuhan 430068, China;[Chen, Jianxin] Tea Research Institute, Chinese Academy of Agricultural Sciences, Hangzhou 310008, China;[Cheng, Junhua] Hubei Sanhua Ecological Agriculture Technology Development Co., LTD, Huangshi 435112, China
通讯机构:
[Chen, Xiaoqiang] C;Cooperative Innovation Center of Industrial Fermentation (Ministry of Education & Hubei Province), Key Laboratory of Fermentation Engineering (Ministry of Education), Hubei University of Technology, Wuhan 430068, China. Electronic address:
摘要:
Our previous study revealed that green tea polysaccharide conjugate (gTPC) has emulsion effect, but its emulsifying ability is weak. In order to improve the emulsification ability of gTPC, gTPC and bovine serum albumin (BSA) were combined to form five different mass proportions of the TPC/BSA (TB) complex: TPC/BSA: 5:1, 5:2, 5:3, 5:4, and 5:5 w/w. We observed that the 5:5 w/w TB emulsion was more hydrophobic and surface-active. Furthermore, the emulsions prepared using 50.00wt% medium-chain triglycerides exhibited the best stability. In addition, the TB emulsion exhibited stability in adverse environments of pH, salt, and heat; in particular, under salt conditions, no significant changes were observed in zeta potential. Subsequently, in vitro simulated digestion experiments were performed to investigate the use of TB emulsions for β-carotene encapsulation. We observed that the encapsulation efficiency for β-carotene was approximately 90.0%; it was subsequently released in the intestine.
作者机构:
[Dai, Chenming] School of Modern Industry for Selenium Science and Engineering, Wuhan Polytechnic University, Wuhan 430023, China;[Dai, Chenming] School of Bioscience and Bioengineering, South China University of Technology, Guangzhou 510006, China;[Wang, Feifei] School of Modern Industry for Selenium Science and Engineering, Wuhan Polytechnic University, Wuhan 430023, China. Electronic address: twangff@whpu.edu.cn
通讯机构:
[Wang, Feifei] S;School of Modern Industry for Selenium Science and Engineering, Wuhan Polytechnic University, Wuhan 430023, China. Electronic address:
摘要:
The use of microalgae-bacteria consortia (MBC) for wastewater treatment has garnered attention as their interactions impart greater environmental adaptability and stability compared with that obtained by only microalgae or bacteria use, thereby improving the efficiency of pollutant removal and bio-product productivity. Additionally, the value-added bio-products produced via biorefineries can improve economic competitiveness and environmental sustainability. Therefore, this review focuses on the interaction between microalgae and bacteria that leads to nutrient exchange, gene transfer and signal transduction to comprehensively understand the interaction mechanisms underlying their strong adaptability. In addition, it includes recent research in which MBC has been efficiently used to treat various wastewater. Moreover, the review summarizes the use of MBC-produced biomass in a biorefining context to produce biofuel, biomaterial, high-value bio-products and bio-fertilizer. Overall, more effort is needed to identify the symbiotic mechanism in MBC to provide a foundation for circular bio-economy and environmentally friendly development programmes.