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Nano-selenium controlled cadmium accumulation and improved photosynthesis in indica rice cultivated in lead and cadmium combined paddy soils

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Journal of Environmental Sciences 2021年第5期33卷 336-346页

作者： Chengrun Wang Tingting Cheng Haitao Liu Fangyun Zhou JifengZhang Min Zhang Xinya Liu Wenjun Shi Tong Cao School of Biological Engineering Huainan Normal UniversityHuainan 232038China Key Laboratory of Bioresource and Environmental Biotechnology of Anhui Higher Education Institutes Huainan Normal UniversityHuainan 232038China

Selenium nanoparticles(Se NPs) are less toxic and more biocompatible than selenite or selenate. However, studies involving spraying with Se NPs for reducing accumulation of cadmium(Cd) and lead(Pb) in rice grains have been rarely reported as yet. Herein, indica rice seedlings cultivated in Cd + Pb-spiked paddy soils(denoted as positive control) were sprayed with Se NPs sols for four times from tillering to booting stage. Compared to positive control, 50–100 μmol/L Se NPs downregulated Cd transporters-related genes such as Os LCT 1, OsH MA 2 and Os CCX2 in leaves and OsLCT1, Os PCR1 and Os CCX2 genes in node I at filling stage. Meanwhile, Se-binding protein 1 was distinctly elevated, involving the repression of Cd and Pb transportation to rice grains. Se NPs also differentially improved RuBP carboxylase and chlorophylls especially some key genes and proteins involving photosynthetic system. Besides, 25–50 μmol/L Se NPs diminished reactive oxygen species overproduction from NADPH oxidases whereas boosted glutathione peroxidase, reducing protein carbonylation in rice seedlings. However, the antioxidant isozymes and oxidatively modified proteins were slightly rebounded at 100 μmol/L. Se contents were noticeably elevated and confirmed to exist as selenomethionine in the rice grains following all the treatments by Se NPs. Thus, the optimal dosage of Se NPs for foliar application is 50 μmol/L, which significantly decreased Cd accumulation, improved photosynthesis and Se enrichment whereas caused no distinct reduction of Pb in the grains. Thus, an appropriate dosage of Se NPs can be conducted to decrease Cd accumulation, improve photosynthesis, and organic Se contents in rice grains.

关键词： Selenium nanoparticles(Se NPs) Heavy metals Oryza sativa L. Selenium enrichment and cadmium reduction food quality and safety

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Recent trends and technical advancements in biosensors and their emerging applications in food and bioscience

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food Bioscience 2022年第3期47卷 1023-1050页

作者： Oluwatosin E.Bankole Deepak Kumar Verma Mónica L.Chávez González Juan Guzmán Ceferino JoséSandoval-Cortés Cristóbal N.Aguilar Department of Chemical Sciences Faculty of Science and Science EducationAnchor UniversityLagos StateNigeria Agricultural and food Engineering Department Indian Institute of Technology KharagpurKharagpur721302West BengalIndia Bioprocesses Research Group Food Research DepartmentSchool of ChemistryUniversidad Autonoma de CoahuilaUnidad Saltillo25280CoahuilaMexico Los Ríos Multidisciplinary Academic Division Universidad Juárez Autónoma de TabascoTabascoMexico Department of Analytical Chemistry School of ChemistryUniversidad Autonoma de CoahuilaUnidad Saltillo25280CoahuilaMexico

Biosensor development has recently advanced as a result of their strong and indisputable uses as analytical methods in a variety of sectors,including medicine,food industry,environmental monitoring,metabolism,agriculture,military,and *** popularity of biosensors as devices for a variety of applications may be ascribed to their distinct advantages of fast or rapid analysis,high sensitivity,minimal sample demand and preparation,and no need for the specific skill of operation that traditional analytical procedures *** attempted to update earlier studies in this study by incorporating other materials that have been in use but have received less attention,such as carbon nano-onions(CNOs),metal-organic frameworks(MOFs),and biopolymers for biosensor manufacturing and design based on their unique *** assessment also took into account applicable applications in many *** considerable progress has been made in the application of biosensors,there is still a need for research development and enhancement,particularly in transforming most of the laboratory experiments that have already been published into portable on-site and implementable in the public domains.

关键词： Biosensors Nanotechnology Nano-materials food quality and safety food snd biomedical industry Industrial application

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Optical non-destructive techniques for small berry fruits: A review

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Artificial Intelligence in Agriculture 2019年第2期2卷 85-98页

作者： Shuping Li Hongpei Luo Menghan Hu Miao Zhang Jianlin Feng Yangtai Liu Qingli Dong Baolin Liu Shanghai Key Laboratory of Multidimensional Information Processing East China Normal UniversityShanghai 200241China School of Medical Instrument and food Engineering University of Shanghai for Science and Technology516 Jun Gong Rd.Shanghai 200093China Meng Xiancheng College of ECNU East China Normal UniversityShanghai 200241China College of Fine Arts East China Normal UniversityShanghai 200241China

Small berries including strawberry and blueberry are extensively consumed fruits with great economic values due to their characteristic flavor and appearance as well as potential health *** review elaborated the optical non-destructive techniques ***-NIR spectroscopy,computer vision system,hyperspectral imaging,multispectral imaging,laser-induced method and thermal imaging,and their applications for quality and safety control of small berry *** discussion regarding the photoacoustic technique,X-ray technique,Terahertz spectroscopy,odor imaging,micro-destructive testing and smart mobile terminal-based analyzer was also ***,we proposed our personal understanding of the technical challenges and further trends for these optical non-destructive techniques:1)owing to the relatively low detection limit,the so-called micro-destructive techniques may be alternative to the traditional non-destructive techniques in both practical and fundamental research;2)we suggest that the research articles like“collecting data first,and then modeling the relevant properties of agricultural products by machine learning”should be less produced in related ***'s because such research methods are likely to be suspected of“cheating”.It is recommended that some modeling competitions can be carried out in the agricultural engineering field to avoid or reduce the“cheating”model.

关键词： Berry fruit Optical non-destructive measurement food quality and safety

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中国政府食品质量安全管理的分析框架及其治理体系

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公共行政 2011年第6期

作者：陈锡进

食品质量安全已成为中国政府和大众关注的焦点，对食品质量安全的管理成效不理想也成为政府治理的一大顽症。其原因在于政府缺乏一个全面、综合、动态的食品质量安全管理分析框架。所以建立在食品质量安全突发事件与食品质量安全风险、... 详细信息

食品质量安全已成为中国政府和大众关注的焦点，对食品质量安全的管理成效不理想也成为政府治理的一大顽症。其原因在于政府缺乏一个全面、综合、动态的食品质量安全管理分析框架。所以建立在食品质量安全突发事件与食品质量安全风险、食品质量安全危机之间“广泛联系、相互链接、动态发展”基础之上的中国食品质量安全管理分析框架，对于中国食品质量安全管理就具有十分重要的理论和实践意义。运用此分析框架，构建“食品质量安全风险管理”、“食品质量安全应急管理”、“食品质量安全危机管理”三位一体的治理体系是中国政府对食品质量安全管理的根本之策。

关键词：食品质量安全管理风险危机治理 food quality and safety supervision risks crisis improvement

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