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Rapid screening of 420 pesticide residues in fruits and vegetables using ultra high performance liquid chromatography combined with quadrupole-time of flight mass spectrometry

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Food Science and Human Wellness 2023年第4期12卷 1064-1070页

作者： Junmei Ma Sufang Fan Liqiong Yang Liangna He Hongwen Zhai Xiaowei Ren Qiang Li Yan Zhang Hebei Food Inspection and Research Institute Hebei Engineering Research Center for Special Food Safety and HealthKey Laboratory of Special Food Supervision Technology for State Market RegulationHebei Food Safety Key LaboratoryShijiazhuang 050200China Hebei Key Laboratory of Forensic Medicine College of Forensic MedicineHebei Medical UniversityShijiazhuang 050017China

A new method for screening and identification 420 pesticide residues in fruits and vegetables by ultra-performance liquid chromatography coupled with quadrupole-time of flight mass spectrometry(UPLC-Q-TOF/MS)were *** samples were extracted with acetonitrile/acetic acid(99:1,V/V),and clean-up by SinChERS-Nano(single-step,cheap,effective,rugged,safe,nano)column,determined by UPLC-Q-TOF/*** accurate mass database and MS/MS database which contains 420 pesticides were established,the automatic retrieval of detection results was carried on according to the accurate mass,retention time,isotope ratio,ion fragment information,and so *** verification was performed on leeks *** results showed that 420 pesticides had good linearity in the range of 0.1-100μg/L,and the correlation coeffificients(R2)was greater than *** limits of detections(LODs)and limits of quantifications(LOQs)of 420 pesticides were in range of 0.05-2.0 and 0.1-5.0μg/L,*** average spike recoveries at 3 levels were 70.1%to 119.7%,and the relative standard deviations(RSD)were lower than 20%(n=6).With this method,a survey of pesticide residues was conducted for 110 samples of 10 different fruits and vegetables,which provided scientific data for ensuring pesticide residue safety of the fruits and vegetables consumed daily by the *** method was simple,sensitive and accurate,and could be used for rapid screening of 420 pesticide residues in fruits and vegetables.

关键词： UPLC-Q-TOF/MS SinChERS-Nano column Pesticide residues fruits and vegetables

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Power ultrasound for the preservation of postharvest fruits and vegetables

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International Journal of Agricultural and Biological Engineering 2013年第2期6卷 116-125页

作者： Xu Yuting Zhang Lifen Zhong Jianjun Shu Jie Ye Xingqian Liu Donghong School of Biosystems Engineering and Food Science Zhejiang UniversityHangzhou 310058China College of Food Science and Technology Henan University of TechnologyZhengzhou 450001China Fuli Institute of Food Science Zhejiang UniversityHangzhou 310058China

Increasing public demands for improved safety and quality of fruits and vegetables in the fresh market,awaken a growing interest for novel technologies for the preservation of postharvest fruits and vegetables before *** technology provides one of the methods that with better treating time,enhanced products quality,reduced chemical hazards,low consumption of energy,and is environmentally *** review provides an up-to-date summary of published findings on the application of ultrasound in the preservation of fresh fruits and *** ultrasound devices commonly utilized,effects of power ultrasound treatment as a factor that affects decay incidence,safety and quality of fresh fruits and vegetables are *** challenges and research trends in the future are also *** is concluded that much progress has been achieved in this field during recent *** achievements paved the way for the industrial-scale application of ultrasound in the preservation of postharvest fruits and vegetables.

关键词： power ultrasound postharvest fruits and vegetables decontamination quality

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The role of signal production and transduction in induced resistance of harvested fruits and vegetables

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Food Quality and Safety 2021年第3期5卷 205-212页

作者： Bin Wang Yang Bi College of Food Science and Engineering Gansu Agricultural UniversityLanzhouChina

Postharvest diseases are the primary reason causing postharvest loss of fruits and *** fungicides show an effective way to control postharvest diseases,the use of fungicides is gradually being restricted due to safety,en vironmental polluti on,and resista nee developme nt in the *** resista nee is a new strategy to control postharvest diseases by eliciti ng immune activity in fruits and vegetables with exogenous physical,chemical,and biological *** being stimulated by elicitors,fruits and vegetables respond immediately against pathoge *** process is actually a conti nuous signal tra nsducti on,in eluding the generati on,transduction,and interact!on of signal *** step of response can lead to corresponding physiological functi ons,and ultimately induce disease resista nee by upregulating the expressi on of disease resista nee genes and activati ng a variety of metabolic *** molecules not only mediate defe nse resp onse alone,but also in teract with other signal tra nsducti on pathways to regulate the disease resista nee resp on *** various signal molecules,the sec ond messenger(reactive oxygen species,nitric oxide,calcium ions)and plant hormones(salicylic acid,jasmonic acid,ethylene,and abscisic acid)play an importa nt role in induced resista *** article summarizes and reviews the research progress of induced resista nee in recent years,and expounds the role of the above-me ntioned signal molecules in induced resista nee of harvested fruits and vegetables,and prospects for future research.

关键词： fruits and vegetables induce resistance signal molecule production transduction.

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Simultaneous Screening of 733 Pesticide Residues in fruits and vegetables by a GC/LC-Q-TOFMS Combination Technique

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Engineering 2020年第4期6卷 432-441页

作者： Guofang Pang Qiaoying Chang Ruobin Bai Chunlin Fan Zijuan Zhang Hongyuan Yan Xingqiang Wu Chinese Academy of Inspection and Quarantine Beijing 100176China College of Chemistry and Environmental Science Hebei UniversityBaoding 071002China Beijing Uni-Star Inspection Technology Co.Ltd. Beijing 100176China

In this paper,we report the construction of two accurate mass databases and the development of a combination detection method that simultaneously screens for 733 pesticide and chemical contaminant multi-residues via high-throughput liquid chromatography(LC)-and gas chromatography(GC)-quadru pole-time-of-flight mass spectrometry(Q-TOFMS).This work demonstrates that electronic mass spectral standards may replace chemical-source standard materials as references through one sample preparation and the combination of GC/LC-Q-TOFMS *** cutting-edge technique has also replaced multiresidue determination using targeted detection with non-targeted *** pesticide residue types,sensitivity,recovery,and reproducibility of this combination technique are evaluated in eight fruit and vegetable *** technique shows three advantages:①In comparison with the discovery capability of a single technique,the combination technique shows an improvement of 51.1%(GC-QTOFMS)and 39.6%(LC-Q-TOFMS),respectively;②the combination technique can satisfy a screening limit lower than 10μg·kg^-1 and meet the requirements of“uniform standards,”although some of the pesticide residues could be optimized to further improve screening sensitivity;③over 488 pesticides with recoveries between 60%-120%and relative standard deviation(RSD)fruits and vegetables obtained from across the mainland of *** statistical analysis,533 pesticides in 115891 determinations were detected,and the regularity of pesticides in the fruits and vegetables sold on the Chinese market was shown.

关键词： Pesticide multi-residues GC-Q-TOFMS LC-Q-TOFMS Accurate mass database Spectra library fruits and vegetables

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Experimental Study and Modeling of a Convective Dryer for fruits and vegetables

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Engineering（科研） 2023年第1期15卷 13-23页

作者： Souleymane Sinon Salifou Tera Kayaba Haro El-Maktoume Djanfar Oumar Sanogo Sié Kam Laboratoire d’Energies Thermiques Renouvelables (LETRE) Université Joseph KI-ZERBO Ouagadougou Burkina Faso Laboratoire des Systèmes d’énergie Renouvelable et Environnement (LASERE) Institut de Recherche en Sciences Appliquées et Technologies (IRSAT/CNRST) Ouagadougou Burkina Faso Laboratoire de Modélisation Pluridisciplinaire et Simulations (LAMPS) Université de Perpignan Via Domitia Perpignan France Laboratoire énergétique de l’équipe d’Accueil Doctoral physique du Globe de l’Energie et de l’Environnement (PGEE) Université d’Antananarivo Antananarivo Madagascar

The present work deals with the study of the thermal performances of a convective dryer for fruits and vegetables. This dryer, operating with energy generated from the combustion of biomass in a boiler connected to a water/air heat exchanger could be a solution to the problematic of energy related to drying. An experimental and theoretical study is carried out on the temperature profile inside the dryer. For this purpose, 10.3 kg of tomatoes were dried on the experimental setup. The operation lasted about 16 hours and reduced the moisture content from 93.8% to 12% in wet basis. The overall thermal efficiency of the convective dryer during the trial is 10.76%. For the theoretical study, the dryer components (boiler, water/air exchanger and drying chamber) are first modeled individually;the different sub-programs are then coupled to form the convective dryer program. The method of global heat balances combined with the one called “ε-NUT” is used. The set of equations is discretized using the implicit method of finite differences, then solved with the Gauss algorithm in Fortran 90. The theoretical results obtained are in good agreement with those measured.

关键词： Energy Drying Biomass Boilers fruits and vegetables

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Redox protective potential of fruits and vegetables:A review

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Journal of Coastal Life Medicine 2015年第8期 663-668页

作者： Zainab Tahir Muhammad Arshad Sunbal Khalil Chaudhari Department of Botany PMAS Arid Agriculture UniversityRawalpindiPakistan

Although oxidation reactions are crucial for life,they can also be damaging to cells and tissues,causing variety of chronic ailments like,aging,cancer,autoimmune problems,cardiovascular and neurodegenerative disorders *** protective systems are present in body for general immunization against free radicals,which can be supported by antioxidants that we take in our daily *** antioxidants such as flavonoids,hydrolysable tannins,coumarins,xanthones,phenolics,terpenoids,ascorbic acid,carotenoids and proanthocyanins are found in various plant products,including fruits,leaves,seeds oils,and *** review gives a brief account of research reports on fruits and vegetables which provide free radical scavenging compounds to the body.

关键词： Autoimmune problems Redox protective systems fruits and vegetables Free radical scavenging compounds

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Pesticide Residues and Government Regulation in China─Evidence from Pesticide Residues in fruits and vegetables

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Agricultural Science & Technology 2021年第1期22卷 42-49页

作者： SHAO Yi-tian WANG Yi-ping China Institute of Regulation Research Zhejiang University of Finance and EconomicsHangzhou 310018PRC Community Health Service Center of Mishi Lane Gongsu DistrictHangzhou 310005PRC

China is a big producer and exporter of fruits and vegetables,and pesticide residues are an important factor affecting the quality and safety of fruits and vegetables and their export *** this paper,we analyzed the pesticide residue data on fruits and vegetables in 32 major Chinese cities between 2012—2019,the export data of Chinese fruits and vegetables and the role of pesticides in foodborne *** results showed that pesticide residues in fruits and vegetables(PRFV)partial excess of maximum residue standard(MRL)and residues of banned pesticide were still widespread in *** comparing the standards of pesticide residues in the European Union and China and addressing the agricultural situation in China,this paper analyzed the main causes of PRFV in China and put forward some policy suggestions for strengthening government regulation of pesticide application in agricultural products.

关键词： fruits and vegetables Pesticide residues Government regulation Policy recommendations

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Determination of Forechlorfenuron Residue in fruits and vegetables by QuEChERS Extraction and HPLC-MS/MS

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Agricultural Science & Technology 2017年第9期18卷 1686-1690页

作者：胡江涛俞凌云帅培强于刚何开蓉四川出入境检验检疫局检验检疫技术中心四川成都610041

[Objective] A quick extraction method of QuEChERS-HPLC-MS/MS was established to determine forechlorfenuron in fruits and vegetables. [Method] fruits and vegetables were extracted with 0.1% acetic acid of acetonitrile solution and pu- rified by QuEChERS, and then forechlorfenuron residues were determined by HPLC- MS/MS. [Result] The limits of detection （LODs） and low determination limit （LOQ） for the forechlorfenuron was 1.0 vg/kg and 5.0 pg/kg in fruits and vegetables, re- spectively. Regression equations of these hormones had a good linear relationship （FF〉0.999） within 2.0-100.0 vg/L. The average recoveries of forechlorfenuron was in the range of 72.0-115. 0% with the coefficients of variation between 1.5% and 9.8% at the spiked levels of 10.0-500.0 μg/kg. [Conclusion] The method can be applied for the determination of the forechlorfenuron in fruits and vegetables.

关键词： Determination Forechlorfenuron fruits and vegetables HPLC-MS/MS

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Development status and prospect of cold chain logistics of fruits,vegetables,and agricultural products based on intelligent technology

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智能化农业装备学报（中英文） 2024年第3期5卷 63-74页

作者： ZHANG Ruizhi LIU Qianyuan HUANG Yuying LIU Bing CHANG Zhiguang WANG Jiaoling Zhongnong Guoke(Nanjing)Planning and Design Co.Ltd. Nanjing 210014China Nanjing Institute of Agricultural Mechanization Ministry of Agriculture and Rural AffairsNanjing 210014China Key Laboratory of Agro-Products Processing and Storage Ministry of Agriculture and Rural AffairsNanjing 210014China

The cold chain in the production area of fruits and vegetables is the primary link to reduce product loss and improve product quality,but it is also a weak *** the application of big data technology in cold chain logistics,intelligent devices,and technologies have become important carriers for improving the efficiency of cold chain logistics in fruit and vegetable production areas,extending the shelf life of fruits and vegetables,and reducing fruit and vegetable *** have many advantages in fruit and vegetable pre-cooling,sorting and packaging,testing,warehousing,transportation,and other *** article summarizes the rapidly developing and widely used intelligent technologies at home and abroad in recent years,including automated guided vehicle intelligent handling based on electromagnetic or optical technology,intelligent sorting based on sensors,electronic optics,and other technologies,intelligent detection based on computer vision technology,intelligent transportation based on perspective imaging technology,*** analyses and studies the innovative research and achievements of various scholars in applying intelligent technology in fruit and vegetable cold chain storage,sorting,detection,transportation,and other links,and improves the efficiency of fruit and vegetable cold chain ***,applying intelligent technology in fruit and vegetable cold chain logistics also faces many *** challenges of high cost,difficulty in technological integration,and talent shortages have limited the development of intelligent technology in the field of fruit and vegetable cold *** solve the current problems,it is proposed that costs be controlled through independent research and development,technological innovation,and other means to lower the entry threshold for small *** integrating intelligent technology and cold chain logistics systems to improve data security and system *** the same time,the government

关键词： fruits and vegetables cold chain logistics automated guided vehicle intelligent handling computer vision spectral detection

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农业嘉年华带您畅游“蔬果世界”

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绿色中国B版 2013年第3期 68-69页

作者：张志国

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