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Risk assessment of Bacillus cereus in lettuce grown in open-feld and greenhouse farming systems in China:A comparative study

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Food quality and safety 2024年第2期8卷 268-277页

作者： Yang Qu ShenghaoYu Haotian Gu WenWang WenboWang Zhaoying He Hong Shan Min Gao Xin Zhao ChaoWei TingtingTao Guanghua Zhao Changyan Zhou Yujuan Suo Laboratory of Quality and Safety Risk Assessment for Agro-Products of Ministry of Agriculture and Rural Affairs Institute for Agro-Food Standards and Testing TechnologyShanghai Academy of Agricultural SciencesShanghaiChina Information Application Research Center of Shanghai Municipal Administration for Market Regulation ShanghaiChina Eco-environmental Protection Research Institute Shanghai Academy of Agricultural SciencesShanghaiChina MOA Laboratory of Quality&Safety Risk Assessment for Agro-products(Hangzhou) Institute of Agro-Product Safety and NutritionZhejiang Academy of Agricultural SciencesHangzhouChina Laboratory of Quality and Safety Risk Assessment for Agro-Products of Ministry of Agriculture and Rural Affairs Institute of Agricultural Standards and Testing Technology for Agri-ProductsShandong Academy of Agricultural SciencesJinanChina Institute of Quality Standard and Testing Technology Beijing Academy of Agriculture and Forestry SciencesBeijingChina Quality and Safety Institute of Agricultural Products Heilongjiang Academy of Agricultural SciencesHarbinChina Institute of Food Science and Technology Chinese Academy of Agricultural SciencesBeijingChina Institute of Germplasm Resources and Biotechnology Tianjin Academy of Agricultural SciencesTianjinChina Laboratory of Quality and Safety Risk Assessment for Agro-Products of Ministry of Agriculture and Rural Affairs Institute of Quality Standard and Testing Technology for Agro-Products of Sichuan Academy of Agricultural SciencesChengduChina Ministry of Science and Technology/Key Laboratory for Control Technology and Standard for Agro-product Safety and Quality Institute of Food Safety and NutritionJiangsu Academy of Agricultural SciencesNanjingChina Research Institute of Agricultural Quality Standards and Testing Techniques Henan Academy and Agricultural SciencesZhengzhouChina

Objectives:Bacillus cereus isolates from vegetables can cause diarrheal syndrome food ***,the most highly consumed readyto-eat vegetable,poses a signifcant risk of *** ***,*** monitoring and evaluation during cultivation are essential for preventing foodborne illnesses caused by this food-pathogen ***,the impact of different cultivation practices on *** contamination in lettuce currently remains ***,a validity indicator for the experimental models cannot be effectively validated under feld *** and Methods:Herein,we assessed the risk of *** exposure using lettuce grown under two different cultivation farming systems in China(open-feld versus greenhouse)using a quantitative microbial risk assessment ***’s mean comparison method and kernel density estimation frequency distribution statistics were used for model validation using environmental samples and ***:The mean concentration of *** in open-feld-grown lettuce was signifcantly higher than that in greenhouse-grown lettuce(P<0.05).No signifcant differences were observed between measured,formula-calculated,and risk assessment values in environmental samples or lettuce(P>0.05),verifying the accuracy of the risk ***:Soil solarization,complete manure treatment,usage of mulch flms,and irrigation water quality should be considered in agricultural practices to control *** concentrations in ***,we found that *** was more abundant in open-feld-grown lettuce,and we provide a risk evaluation framework that can guide farmers and policy-makers to control *** contamination in farm-to-fork lettuce chains in China.

关键词： Diarrheal syndrome food poisoning ready-to-eat vegetable greenhouse microbial risk assessment

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Carbendazim residue in plant-based foods in China:Consecutive surveys from 2011 to 2020

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Environmental Science and Ecotechnology 2024年第1期17卷 109-118页

作者： Dou Wang Guiling Yang Xiao Yun Ting Luo Hao Guo Liying Pan Wei Du Yanhua Wang Qiang Wang Pu Wang Qinghua Zhang Yun Li Nan Lin State Key Laboratory for Managing Biotic and Chemical Threats to the Quality and Safety of Agro-products Laboratory(Hangzhou)for Risk Assessment of Agricultural Products of Ministry of AgricultureInstitute of Agro-product Safety and NutritionZhejiang Academy of Agricultural SciencesHangzhou310021ZhejiangChina College of Urban and Environmental Sciences Peking UniversityBeijing100871China Yunnan Provincial Key Laboratory of Soil Carbon Sequestration and Pollution Control Faculty of Environmental Science&EngineeringKunming University of Science&TechnologyKunming650500China Hubei Key Laboratory of Industrial Fume and Dust Pollution Control School of Environment and HealthJianghan UniversityWuhan430056China State Key Laboratory of Environmental Chemistry and Ecotoxicology Research Center for Eco-Environmental SciencesChinese Academy of SciencesBeijing100085China Key Laboratory of Agro-Product Quality and Safety of Ministry of Agriculture Institute of Quality Standards and Testing Technology for Agro-ProductsChinese Academy of Agricultural SciencesBeijing100081China Department of Environmental Health School of Public HealthShanghai Jiao Tong UniversityShanghai200025China

Carbendazim,a widely used fungicide in China,has been found to have reproductive toxicity and mutagenic ***,information on the spatial-temporal variations of carbendazim residues in food in China is ***,we investigated the presence of carbendazim in China's plant-based foods from 2011 to 2020,evaluated the spatial-temporal characteristics,and assessed the associated exposure risks in the Chinese *** results revealed a high detection frequency of carbendazim in fruits(26.4%)and high concentrations in vegetables(~110 mg kg^(-1)),indicating widespread misuse of the *** acute risks of consuming certain vegetables and cereals exceeded the recommended limits by up to 12 and 5 times,*** there has been a decline in carbendazim residue levels in food since the implementation of the Chinese government's action plan for zero growth of pesticide use in 2015,some provinces still exhibited high levels of carbendazim in multiple food categories,which were positively correlated with annual pesticide *** highlight that carbendazim contamination reflects the broader issue of pesticide use in *** emphasizes the need for committed and targeted national policies to reduce carbendazim residues in food and suggests that such measures could also regulate the use of other pesticides,given that pesticide abuse in China is not limited to specific *** call for the re-evaluation of maximum residue limits of carbendazim,particularly in highly consumed foods such as cereals.

关键词： Carbendazim Plant-based foods China Spatial-temporal variations Exposure and risk assessment

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Residue analysis method of acetochlor, atrazine and their metabolites in corn

Chinese Journal of Pesticide Science

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Chinese Journal of Pesticide Science 2024年第6期26卷 1201-1207页

作者： Wang, Quansheng Lyu, Yan Hu, Chenlei Wu, Yinliang Ningbo Key Laboratory of Testing and Control for Characteristic Agro-Product Quality and Safety Ningbo Academy of Agricultural Sciences Zhejiang Province Ningbo315040 China

Multi-residue analytical method of acetochlor, atrazine and their metabolites (EMA, HEMA, DEA, DIA, DACT, HA) was developed based on the modified QuEChERS. Target compounds were extracted with acetonitrile, purified with PSA and anhydrous magnesium sulfate, and detected with ultra-high performance liquid chromatography-tandem mass spectrometer (UPLC-MS/MS). The results showed that the correlation coefficient (r) was higher than 0.99 within the concentration range of 0.001 to 0.02 mg/L, which indicated a satisfactory linear relationship between the areas and the concentrations of all target compounds. Meanwhile, average recoveries of all compounds in fresh corn, corn kernel and straw were 85%~109% with the relative standard deviation (RSD) ≤ 18% at the spiked level of 0.01 to 0.5 mg/kg. The limit of quantification (LOQ) of the method was 0.01 mg/kg. The results indicated that the trueness, precision and sensitivity of the method met the requirement of residue analysis. © 2024 Editorial Office of Chinese Journal of Pesticide Science. All rights reserved.

关键词： High performance liquid chromatography

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Thiophanate-methyl and its major metabolite carbendazim weaken rhizobacteria-mediated defense responses in cucumbers against Fusarium wilt

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aBIOTECH 2024年第4期5卷 417-430页

作者： Kai Cui Xiaoming Xia Youwei Wang Yueli Zhang Ying Zhang Junli Cao Jun Xu Fengshou Dong Xingang Liu Xinglu Pan Yongquan Zheng Xiaohu Wu State Key Laboratory for Biology of Plant Diseases and Insect Pests Key Laboratory of Control of Biological Hazard Factors(Plant Origin)for Agricultural Product Quality and SafetyMinistry of AgricultureInstitute of Plant ProtectionChinese Academy of Agricultural SciencesBeijing 100193China Institute of Quality Standard and Testing Technology for Agro-Products Shandong Academy of Agricultural SciencesJinan 250100China College of Plant Protection Shandong Agricultural UniversityTai’an 271018China Institute of Plant Protection Shandong Academy of Agricultural SciencesJinan 250100China

The effect of fungicides on the plant-rhizosphere microbiome is a subject of ongoing debate,but whether any alteration in the rhizosphere microbiome could affect plant health is an issue that has not been thoroughly *** address this deficiency,we analyzed the rhizosphere microbiome of wilt disease—resistant and disease-susceptible cucumber cultivars to determine whether(and which)plantassociated microorganisms have a role in disease *** further assessed whether the fungicides thiophanate-methyl and carbendazim affect the rhizosphere microbiome,which may contribute to the plant’s immune *** on results acquired with both radicle-inoculation and soil-inoculation methods,cultivars Longyuanxiuchun(LYXC)and Shuyan2(SY2)were identified as being disease resistant,whereas Zhongnong6(ZN6)and Zhongnong38(ZN38)were *** microbiome structure differed substantially between the resistant and susceptible plants,with LYXC and SY2 each having a significantly greater Shannon index than *** results revealed that the disease-resistant cucumber cultivars recruited more beneficial bacteria,i.e.,Bacillus,in their rhizosphere soil;as such,Bacillus was identified as a keystone genus in the microbial co-occurrence ***,the presence of Bacillus may help cucumbers defend against fungal pathogens within the *** subtilis strain LD15,which was isolated from LYXC rhizosphere soil,could suppress pathogen growth,in vitro,and reduce disease severity in pot ***,evidence also confirmed the accumulation of LD1 in the rhizosphere soil of resistant cucumber *** LYXC,application of thiophanate-methyl or carbendazim altered the microbiome structure,decreased bacterial diversity,and reduced the abundance of Bacillus ***,pot assays verified that fungicide application decreased the proportion of LD15 in rhizosphere *** a microbial perspective,thiophanate-methyl and carbendazim may weaken th

关键词： Thiophanate-methyl and carbendazim Rhizosphere microbiome Cucumber Fusarium wilt disease Bacillus Ecotoxicological risk

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Optimizing soil microbial community and diminishing farmland cadmium via bioremediation with ceramic pellet-based Bacillus sp. h10

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Journal of Cleaner production 2025年 514卷

作者： Wang, Xiaotong Li, Houfu Jing, Shuquan ying, Hong Aioub, AhmedA.A. Zhang, Qichun Zhejiang Provincial Key Laboratory of Agricultural Resources and Environment Key Laboratory of Environment Remediation and Ecological Health Ministry of Education Zhejiang University Hangzhou310058 China Ningbo Key Laboratory of Testing and Control for Characteristic Agro-Product Quality and Safety 315000 China Plant Protection Department Faculty of Agriculture Zagazig University Zagazig44511 Egypt

Ceramic pellets possessing their superiority in environmental sustainability and cost were approved with high application potential and value for the remediation of contaminated soil. Existing studies have mostly explored microbial remediation or material adsorption in isolation. In this study, screening the unique cadmium-tolerant strains to form bio-modified ceramic pellets (Ce-B) to reduce the hazardous amounts of cadmium (Cd) in agricultural soil. A meticulous pot incubation was subsequently conducted to assess the impact of Ce-B on soil and plant Cd content, along with its influence on the soil microbial community structure. Remarkably, a Cd-tolerant bacterium, Bacillus sp. h10, was successfully isolated, exhibiting a notable Cd reduction rate in soil. When Bacillus sp. h10 was integrated with ceramic pellets to create Ce-B1, it demonstrated a superior removal rate of soil available Cd of 66.27 % and 42.90 % in moderately and highly polluted soils. What's more, the total pore volume of the ceramsite was 0.0548 m2 g−1 and the microporous specific surface (Smicro) of the ceramsite was 3.6123 m2 g−1, which indicated that the ceramsite has a large specific surface area and a large number of microporous structures. The FTIR showed noteworthy shifts in peaks (the C=O bond, COO- and -OH group) and new peaks which were detected at 713 cm−1 and at 1795 cm−1. Furthermore, Ce-B1 not only enhanced Pak choi yield, achieving a remarkable output of 113.64 g pot−1, but also reduced 58.86 % Cd uptake by Pak choi. Additionally, Ce-B1 generally enhances the structural integrity, and stability of the micro-ecosystem (with increase in the Bacillus genus from 8.87 % to 68.62 %). In conclusion, this study provides a new option to fix or convert Cd into less biologically available forms (e.g., cadmium sulfide precipitation), which is consistent with the principle of pollution prevention and control at the source. © 2025 Elsevier Ltd

关键词： Bioremediation

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A Portable 3d-Printed Lab-on-A-Chip Device for On-Site Monitoring of Thiamethoxam Residue in Food Samples

SSRN

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SSRN 2025年

作者： Zou, Rubing Yu, Qianyi Wang, Zexiang Yang, Peiyu Zhao, Ying Liu, Yihua Fu, Yan Guo, Yirong Institute of Pesticide and Environmental Toxicology Zhejiang Key Laboratory of Biology and Ecology Regulation of Crop Pathogens and Insects Ministry of Agriculture Key Laboratory of Molecular Biology of Crop Pathogens and Insects Zhejiang University Hangzhou310058 China Research Institute of Subtropical Forestry Chinese Academy of Forestry Hangzhou311400 China Ningbo Academy of Agricultural Sciences Ningbo Key Laboratory of Testing and Control for Characteristic Argo-product Quality and Safety Ningbo315032 China

Unexpected interferences from the food matrix pose challenges to achieving high-performance on-site monitoring of pesticide residues. In this study, we employed 3D printing technology to fabricate a miniaturized lab-on-a-chip (LOC) device for gravity-driven sample pretreatment. Serving as the analytical component, a lateral flow immunochromatographic strip was developed for thiamethoxam, a representative neonicotinoid insecticide. Results showed that the composite LOC device enabled on-site determination of thiamethoxam in 13 different food samples using a multi-step analysis approach. Similar to the buffer-based calibration curve (IC50: 0.11 ng mL-1), the matrix-based calibration curves for celery (IC50: 0.15 ng mL-1) and cucumber (IC50:0.10 ng mL-1) samples exhibited ultrahigh sensitivities, with a total analysis time within 15 min. The average recovery rates were 87.2%~107.4%, with relative standard deviations of 2.1%~7.6% at the spiked levels of 1 and 5 ng g-1. Furthermore, this LOC device was applied to unknown food samples, achieving excellent accordance with LC-MS/MS confirmation. © 2025, The Authors. All rights reserved.

关键词： Pesticides

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Trace the Origin of Yak Meat in Xizang Based on Stable Isotope Combined with Multivariate Statistics

SSRN

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SSRN 2023年

作者： Zong, Wanli Zhao, Shanshan Li, Yalan Yang, Xiaoting Qie, Mengjie Zhao, Yan Institute of Quality Standard & Testing Technology for Agro-Products Key Laboratory of Agro-product Quality and Safety Chinese Academy of Agricultural Sciences Beijing100081 China Weihai Institute for Food and Drug Control Weihai264210 China

In this paper，the feasibility of tracing the origin of yak meat in Xizang Autonomous Region based on stable isotope combined with multivariable statistics was researched. The stable isotope ratios of C, N, H and O in yak meat was determined by stable isotope ratio mass spectrometry, and the data were analyzed by analysis of variance, fisher discriminant analysis, back propagation (BP) neural network and orthogonal partial least squares discrimination analysis (OPLS-DA). The results showed that the four stable isotopes of C, N, H, O had significant differences among different origins (P © 2023, The Authors. All rights reserved.

关键词： Meats

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Physicochemically protected organic carbon release is the rate-limiting step of rhizosphere priming in paddy soils

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Science of the Total Environment 2024年 955卷 176859页

作者： Wu, Cuiyan Huang, Wei Liu, Yixian Li, Han Ding, Shuai Zhu, Zhenke Wang, Feng Dijkstra, Feike A. Zhang, Guangbin Kuzyakov, Yakov Cheng, Weiguo Xiao, Mouliang Ge, Tida School of Materials and Chemical Engineering Ningbo University of Technology Ningbo315211 China State Key Laboratory for Managing Biotic and Chemical Threats to the Quality and Safety of Agro-products Institute of Plant Virology Ningbo University Ningbo315211 China Ningbo Key Laboratory of Testing and Control for Characteristic Agro-Product Quality and Safety Ningbo315211 China Sydney Institute of Agriculture School of Life and Environmental Sciences The University of Sydney CamdenNSW2570 Australia State Key Laboratory of Soil and Sustainable Agriculture Institute of Soil Science Chinese Academy of Sciences Nanjing210008 China Department of Soil Science of Temperate Ecosystems Department of Agricultural Soil Science University of Göttingen Göttingen37077 Germany Faculty of Agriculture Yamagata University Yamagata Tsuruoka997-8555 Japan State Key Laboratory of Subtropical Silviculture College of Environment and Resources Zhejiang A&F University Hangzhou311300 China

Iron oxides affect the stability of soil organic matter (SOM), which in turn affects greenhouse gas emissions in paddy soils. They also regulate the direction and magnitude of the rhizosphere priming effect (RPE) by restricting SOM accessibility and microbial activity. However, the controlling steps and key factors that regulate the RPE magnitude under anoxic conditions are unknown. In this study, we investigated the mechanisms through which Fe(III) reduction affects the RPE using humic acid as an electron shuttle in paddy soils and conducting continuous 13CO2 labeling of rice plants. The RPE, measured via CO2 emission, was approximately 25 % greater in soils with humic acid than in soils without. A rapid increase in the RPE of CH4 emissions after 41 days was attenuated in soils containing humic acid. Root growth and Fe(III) reduction stimulated the total primed CO2 emissions from the rhizosphere independent of the microbial biomass and enzyme activities. Humic acid accelerated Fe(III) reduction, leading to a decrease in Fe-bound organic carbon and an increase in RPE (CO2 emissions). The rhizosphere-primed CO2 emissions decreased with increasing amounts of reactive Fe(III) (oxyhydr)oxides, which protected the SOM from microbial and enzymatic attacks. Biochemical Fe(III) reduction and physical aggregate destruction controlled the abiotic transformation of inaccessible SOM into bioavailable organic carbon, thereby regulating the RPE. The results suggest that the reduction of reactive Fe(III) minerals is the rate-limiting step in the release of the physicochemically protected SOM, which in turn determines the magnitude of rhizosphere priming in paddy soils. © 2024 Elsevier B.V.

关键词： Kyoto Protocol

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The Ph Alteration in Simulated Processing Affects Myoglobin Digestibility by Changing Hydrophilicity of the Protein

SSRN

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SSRN 2024年

作者： Liu, Hui Li, Qian Shan, Kai Zhao, Di Zhang, Miao Li, Chunbao State Key Laboratory of Meat Quality Control and Cultured Meat Development MOST Key Laboratory of Meat Processing MARA Jiangsu Collaborative Innovation Center of Meat Production Processing and Quality Control College of Food Science and Technology Nanjing Agricultural University Nanjing210095 China Key Laboratory of Agro-Product Quality and Safety Institute of Quality Standard & Testing Technology for Agro-Products Chinese Academy of Agricultural Sciences Beijing100081 China

Meat processing may cause a wide range of pH, which affects the protein digestibility. This study was designed to explore the relationship between structural changes and digestion of myoglobin. A solution of myoglobin was adjusted to different pH, and spectral technology and molecular dynamics simulation were used to measure the physicochemical properties of the protein following in vitro digestion. At low pH, myoglobin was more hydrophobic and bound more easily to proteases. Myoglobin at low pH had a more flexible structure with increased solvent accessible surface areas of hydrophobic amino acids and a reduction in the hydrogen bond interaction between myoglobin and hydrophobic amino acids, which resulted in higher digestibility. The findings provide a new approach to improve the digestibility of myoglobin in gastrointestinal tract. © 2024, The Authors. All rights reserved.

关键词： Hydrophobicity

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Geographic Origin Traceability and Stable Isotope Prediction of Pgi Hongyuan Yak Milk by Ftir

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SSRN 2025年

作者： Zhang, Zixuan Li, Yalan Yang, Xiaoting Zhao, Shilin Chen, Chengqun Liang, Kehong Zhao, Yan Institute of Standard ＆ Testing Technology for Agro-Products Key Laboratory of Agro-Product Quality and Safety Chinese Academy of Agricultural Sciences Beijing China Institute of Food and Nutrition Development Ministry of Agriculture and Rural Affairs Beijing China Xi’an Institute for Food and Drug Control Xi’an China

The geographical origin of Protected Geographical Indication (PGI) Hongyuan yak milk and three other non-PGI milk samples were distinguished by Fourier Transform Infrared Spectroscopy (FTIR) combined with chemometrics analysis, which was also used to predict δ13C, δ15N, δ2H, and δ18O values in the milk samples. Principal component analysis (PCA), orthogonal partial least squares discriminant analysis (OPLS-DA), linear discriminant analysis (LDA), and support vector machine regression (SVMR) were used for data analysis. The classification accuracies of LDA and OPLS-DA reached 90.9% and 94.1%, respectively. Meanwhile, the best SVMR calibration models for predicting the four stable isotopes of milk (δ13C, δ15N, δ2H, and δ18O) were moderately to well predicted by FTIR (R2: 0.62 to 0.75). The results show that FTIR combined with chemometrics provides a rapid and non-destructive method for milk origin differentiation and δ13C, δ15N, δ2H, and δ18O prediction. © 2025, The Authors. All rights reserved.

关键词： Fourier transform infrared spectroscopy

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