Open Access. Powered by Scholars. Published by Universities.®

Food Processing Commons™

Open Access. Powered by Scholars. Published by Universities.®

Agriculture

Institution
Keyword
Publication Year
Publication
Publication Type

Articles 1471 - 1500 of 4889

Full-Text Articles in Food Processing

Optimization Of The Formula Of Highly Elastic Vegetarian Sausage, Qin Jian-Peng, Ma Xiao-Xiao, Yu De-Yang, Chen Yuan-Yuan, Ma Li-Zhen Dec 2021

Optimization Of The Formula Of Highly Elastic Vegetarian Sausage, Qin Jian-Peng, Ma Xiao-Xiao, Yu De-Yang, Chen Yuan-Yuan, Ma Li-Zhen

Food and Machinery

Objective:


Research Progress In Aptasensors For The Detection Of Kanamycin Residues In Animal-Derived Foods, Ma Jing-Yi, Tian Bing, Wang Xin, Tao Xiao-Qi Dec 2021

Research Progress In Aptasensors For The Detection Of Kanamycin Residues In Animal-Derived Foods, Ma Jing-Yi, Tian Bing, Wang Xin, Tao Xiao-Qi

Food and Machinery

The research progress in aptasensors for the detection of kanamycin residues in animal-derived foods was summarized. The principles of the colorimetric, fluorescent, electrochemical methods, and surface-enhanced raman scattering and so on were outlined. Then the advantages and drawbacks of the above detection methods, and aptamer sequences used were summarized. Moreover, the development of aptasensors for kanamycin detection was prospected.


Application And Progress Of Molecularly Imprinted Sensors In Mycotoxins Detection, Ding Tong-Ying, Yuan Hang Dec 2021

Application And Progress Of Molecularly Imprinted Sensors In Mycotoxins Detection, Ding Tong-Ying, Yuan Hang

Food and Machinery

This article reviews the principle and classification of molecularly imprinted sensors (MIS), focuses on the research results and application status of MIS in mycotoxin detection, and provides reference for better application of MIS to its future development direction.


Application Progress Of Chromatographic Technology In The Separation And Purification Of Flavonoids, Yang Fa-Rong, Jing Lian-Peng, Gu Li-Li, Shang Guan-Lan, Li Rui-Dong Dec 2021

Application Progress Of Chromatographic Technology In The Separation And Purification Of Flavonoids, Yang Fa-Rong, Jing Lian-Peng, Gu Li-Li, Shang Guan-Lan, Li Rui-Dong

Food and Machinery

In this review, the application of chromatographic techniques in the separation and purification of flavonoids was summarized. The usage of column chromatography, pre-high-performance liquid chromatography, thin-layer chromatography, supercritical fluid chromatography, high-speed countercurrent chromatography and a combination of multiple chromatography methods were also reviewed. The development direction of preparative liquid chromatography columns, the optimization of solvent system for high-speed countercurrent chromatography, and the use of multi-dimensional chromatography systems were prospected.


Research On Functional Activities Of Organic Acids In Edible Plant Ferment, Huang Ying, Ren Ting-Yuan, Wan Hong-Qiong, Xie Jiao Dec 2021

Research On Functional Activities Of Organic Acids In Edible Plant Ferment, Huang Ying, Ren Ting-Yuan, Wan Hong-Qiong, Xie Jiao

Food and Machinery

The composition of organic acids in enzyme products and their dynamic changes during fermentation process were reviewed, and the function activities of organic acids in enzyme products beneficial to human health, such as antioxidant, adjustment of intestinal flora, enhancement of satiety, anti-tumor, etc were summarized. Moreover, the evaluation system and mechanism of organic acids in edible enzymes were proposed to be further studied.


Research Progress On The Application Of Blending Automation In The Production Of Baijiu, Han Qiang, Liu Xin, Zhou Yong-Shuai, Tuo Xian-Guo, Zhang Liang Dec 2021

Research Progress On The Application Of Blending Automation In The Production Of Baijiu, Han Qiang, Liu Xin, Zhou Yong-Shuai, Tuo Xian-Guo, Zhang Liang

Food and Machinery

The article briefly describes the blending process and its importance in the production process of Baijiu, and elaborates on the current status of the application of blending recipes, automation control, computers and other technologies in the blending of Baijiu; addresses the current difficulties in blending research and implementation, summarises the shortcomings at this stage from both the researcher's and the company's perspectives, and provides an outlook on future directions for improvement.


The Development Experience And Enlightenment Of American Nutrition Facts Panel, Huang Ze-Ying, Huang Bei-Xun Dec 2021

The Development Experience And Enlightenment Of American Nutrition Facts Panel, Huang Ze-Ying, Huang Bei-Xun

Food and Machinery

Our study collected material and information of the nutrition facts panel from the official website of Food and Drug Administration in America and authoritative literatures, and elaborated the evolution, publicity and education of the nutrition facts panel, implementation effect and deficiency, American front of package labels related to the nutrition facts panel, and comparison with the nutrition facts table in China. Moreover, the successful experience and enlightenments were summarized, and the advice for improving the nutrition facts table in China was also proposed.


Analysis Of Volatile Aroma Components Of Ampelopsis Grossedentata Tea With Different Processing Technology Based On Gc-Ms Combined With Roav, Zhang Jin-Cheng, Yu Ji, Ma Cheng-Jin, Yao Mao-Jun, Wu Zhu-Qing Dec 2021

Analysis Of Volatile Aroma Components Of Ampelopsis Grossedentata Tea With Different Processing Technology Based On Gc-Ms Combined With Roav, Zhang Jin-Cheng, Yu Ji, Ma Cheng-Jin, Yao Mao-Jun, Wu Zhu-Qing

Food and Machinery

Objective: This study aimed to explore the influence of processing technology on characteristic aroma components of Ampelopsis Grossedentata tea. Methods: Four different samples of A. Grossedentata were prepared by traditional processing technology, black tea processing technology, green tea processing technology and dark tea processing technology, and the key flavor compounds of different samples were analyzed by headspace solid-phase microextraction and gas chromatography-mass spectrometry combined with relative odor activity (ROAV), taking the naturally dried A. Grossedentata leaves as control. Results: A total of 37 volatile flavor compounds were detected from 4 kinds of A. Grossedentata tea samples and control samples, among …


Prediction Model Building For Finished Tobacco Quality Based On Miv-Bp Neural Network, Zhuo Ming, Wang Peng, Wang Kai-Kui Dec 2021

Prediction Model Building For Finished Tobacco Quality Based On Miv-Bp Neural Network, Zhuo Ming, Wang Peng, Wang Kai-Kui

Food and Machinery

Objective: The simulation and prediction model between the process of silk making and the quality of finished tobacco was established. Methods: The average influence value method was used to screen the process parameters in the process of making silk, and then a simulation model of the key process parameters of the silk and the quality of the final tobacco was constructed through the Back-Propagation neural network. Results: Comparing the simulated data with the measured data, the average relative error of the simulated prediction of the filling value was 3.16%; the average relative error of the simulated prediction of the whole …


Reconstruction Of Branded Leisure Food Supply Chain Under The Background Of Business Model Innovation, Li Xia, Lu Yue, Li Feng-Ting, Wang Pei-Pei Dec 2021

Reconstruction Of Branded Leisure Food Supply Chain Under The Background Of Business Model Innovation, Li Xia, Lu Yue, Li Feng-Ting, Wang Pei-Pei

Food and Machinery

The paper proposed that branded leisure food companies should keep up with the pace of business model innovation, reduce production costs, expand product sales channels and improve logistics efficiency by analyzing the problems of traditional Branded Leisure Food Supply Chain(BLFSC) under the E-commerce model. Additionally, it is pointed out that branded leisure food companies urgently need restructure and improve the overall circulation efficiency of BLFSC under the background of innovative business models.


Implementing Food Science-Based Instruction In Career Technical Education Courses, Jasmine D. Hendrix Dec 2021

Implementing Food Science-Based Instruction In Career Technical Education Courses, Jasmine D. Hendrix

Theses and Dissertations

Students are exposed to food concepts in agriculture-based career technical education (CTE) courses which provide a gateway for students to become more aware of food science career pathways. Professional development for Mississippi (MS) CTE teachers is needed to effectively implement food science-based instruction since there is not a food science curriculum framework adopted in MS. The objective of this study was to assess a food science professional development training for MS CTE teachers that would increase their self-perceived knowledge of food science, self-perceived ability to conduct food science skills, and their self-efficacy to implement food science-based instruction. Thirty-one teachers participated …


Characterization Of Dirt On White-Shelled Table Eggs Through Image Analysis [Research Note], Maria Patricia Azanza, Dominic Panaligan, Bryan Kenneth Desierdo Dec 2021

Characterization Of Dirt On White-Shelled Table Eggs Through Image Analysis [Research Note], Maria Patricia Azanza, Dominic Panaligan, Bryan Kenneth Desierdo

The Philippine Agricultural Scientist

The study reports the laboratory-scale use of image analysis to categorize dirty white-shelled table eggs. Data generated from image analysis were subjected to statistical analysis and compared with established standards categorizing dirty white-shelled table eggs for washing and sanitation or for use in food processing. The average Quartile 1 (2.49%) and Quartile 3 (9.28%) values of percent surface dirt were found to be proximate to quality standard guidelines values of ≤ 3.12% and < 10% from USDA (2000) and PNS (2005), respectively. These limits were recommended as possible guidelines for classifying eggs into those that are acceptable as table eggs, acceptable for processing with washing and sanitation, and unacceptable for food use.


Data Analytics For Sustainable Food And Agriculture Systems, Megan Lord Reavis Dec 2021

Data Analytics For Sustainable Food And Agriculture Systems, Megan Lord Reavis

Graduate Theses and Dissertations

The increasing concentration of anthropogenic greenhouse gases in the atmosphere is altering the climate, posing a serious threat to global agriculture and food security. Agriculture and food production contribute a quarter of all GHG emissions produced, so there is a critical need to limit emissions in this area while increasing food production to feed the anticipated 10 billion people by 2050. To address the needs of the future, data-driven solutions are needed to guide decision-making and provide support for actionable climate mitigation and survival strategies. Research efforts must be focused on analyzing problems on multiple scales, identifying new ways to …


Averting The Looming Food Crisis: A Clarion Call To Immediate And Near-Term Policy Action, Kabir Ibrahim Mnia, Fnim, Acc Dec 2021

Averting The Looming Food Crisis: A Clarion Call To Immediate And Near-Term Policy Action, Kabir Ibrahim Mnia, Fnim, Acc

Economic and Financial Review

This paper seeks to advise on how to tackle the skyrocketing prices of food being experienced today all over the nation and to get the Government to take urgent and proactive actions to avert the pain being experienced by the entire Nigerian people.


Averting The Looming Food Crisis: A Clarion Call To Immediate And Near-Term Policy Action, Alwan A. Hassan Dec 2021

Averting The Looming Food Crisis: A Clarion Call To Immediate And Near-Term Policy Action, Alwan A. Hassan

Economic and Financial Review

Nigeria suffers from food insecurity and poverty. It is estimated that the number of hungry people in Nigeria is over 53 million, which is about 25.0 per cent of the country’s total population of about 212 million. Also, about 43.0 per cent of Nigerians live below the poverty line. These statistics are worrisome, given that Nigeria, in the 1950s and 1960s, was not only self-sufficient in food production, but was also a net exporter of food to other regions of the continent (Ajayeoba, 2010). A nation is food secure when food is available and accessible in sufficient quantity and quality …


Averting The Looming Food Crisis: A Clarion Call To Immediate And Near-Term Policy Action, Adeleye O. Oyebade Mni Dec 2021

Averting The Looming Food Crisis: A Clarion Call To Immediate And Near-Term Policy Action, Adeleye O. Oyebade Mni

Economic and Financial Review

Food is defined by Britannica, a web-based encyclopaedia, as any substance consisting of protein, carbohydrate, fat, and other nutrients used in the body of an organism to sustain growth and vital processes, and to furnish energy.8 In a similar definition, Wikipedia described food as any substance consumed to provide nutritional support for an organism; adding that food is usually of plant, animal or fungal origin, and contains essential nutrients. The above definitions explain why food is viewed as an essential need of life. However, the production of food has been declining in recent times for some reasons, including the adverse …


Averting The Looming Food Crisis: A Clarion Call To Immediate And Near-Term Policy Action, Gabriel S. Umoh Dec 2021

Averting The Looming Food Crisis: A Clarion Call To Immediate And Near-Term Policy Action, Gabriel S. Umoh

Economic and Financial Review

This paper reviews food crisis and its causes in Nigeria. It takes the position that food crisis has been simmering in Nigeria for the past couple of years and identifies policy instability, poor policy implementation and declining household purchasing power, among others as the major causes of food crisis. It recommends strong policy support and implementation, automatic indexation of wages and pensions and other measures to curb food crisis in the country.


Averting The Looming Food Crisis: A Clarion Call To Immediate And Near-Term Policy Action, Emmanuel A. Onwioduokit Dec 2021

Averting The Looming Food Crisis: A Clarion Call To Immediate And Near-Term Policy Action, Emmanuel A. Onwioduokit

Economic and Financial Review

Discussions on food security have gained traction in the recent past, especially in Africa and other developing economies. Several horrifying images of famished families, particularly around “The Horn of Africa” including Somalia, Ethiopia, and some parts of Kenya, projected globally in both the print and electronic media vividly illustrate the perils of food crises. In Nigeria, food constitute a substantial share of family budgets, particularly for low-income households. When prices of essential foods items increase poorer people suffer the adverse impacts more disproportionately. While clothing and shelter are basic necessities of life, food remains the most vital, given its centrality …


Impact Of Planting Arrangement And Drill Row Spacing For Direct-Seeded, Delayed Flood Rice, Mary Jane Lytle Dec 2021

Impact Of Planting Arrangement And Drill Row Spacing For Direct-Seeded, Delayed Flood Rice, Mary Jane Lytle

Graduate Theses and Dissertations

Direct-seeding is the most frequently utilized planting practice in Arkansas and Mid-South rice (Oryza sativa L.) production. Enhanced plant density and more rapid rice canopy formation may result from the implementation of innovative plant arrangements and spacings. Studies were initiated in 2019 and continued into 2020 to examine different cultural management practice experiments, including evaluating the impacts of planting arrangement, row spacing, and seeding rates on rice stand density, canopy coverage, grain yield, and milling yield. These small-plot trials were conducted at two locations, a silt loam site and a clay site, representative of soils produced to rice in eastern …


Arkansas Soybean Research Studies 2020, Jeremy Ross Dec 2021

Arkansas Soybean Research Studies 2020, Jeremy Ross

Arkansas Agricultural Experiment Station Research Series

The 2020 Arkansas Soybean Research Studies includes research reports on topics pertaining to soybean across several disciplines from breeding to post-harvest processing. Research reports contained in this publication may represent preliminary or only data from a single year or limited results; therefore, these results should not be used as a basis for long-term recommendations. Several research reports in this publication will appear in other University of Arkansas System Division of Agriculture’s Arkansas Agricultural Experiment Station publications. This duplication is the result of the overlap in research coverage between disciplines and our effort to inform Arkansas soybean producers of the research …


Enhancing Hydroxyl Radical Production In Ozone Water By New Type Static Mixer, Liu Xin-Yu, Zhang Bo-Wen, Cui Zheng-Wei Nov 2021

Enhancing Hydroxyl Radical Production In Ozone Water By New Type Static Mixer, Liu Xin-Yu, Zhang Bo-Wen, Cui Zheng-Wei

Food and Machinery

Objective: A new type of static mixer to enhance the ozone gas-liquid phase mass transfer was established in this study. Methods: The effects of different ozone gas flow rates, liquid flow rates and liquid temperature on the concentration of ozone liquid phase and the generation of hydroxyl radicals were investigated, and were compared with the microporous aeration method and the circulating jet method. Results: With the increase of the gas-liquid flow rate, the ozone water saturation concentration and the hydroxyl radical concentration both increased; as the temperature increased, the ozone water saturation concentration decreased, but the hydroxyl radical concentration increased. …


Optimization Of Cellulase Hydrolysis Process Of Rice Bran Dietary Fiber And Its Functional Properties, Liu Yan-Lan, Liu Shuang, Lin Ben-Ping, Li Yan-Yun, Yi Cui-Ping Nov 2021

Optimization Of Cellulase Hydrolysis Process Of Rice Bran Dietary Fiber And Its Functional Properties, Liu Yan-Lan, Liu Shuang, Lin Ben-Ping, Li Yan-Yun, Yi Cui-Ping

Food and Machinery

Objective: To study the technological conditions of preparing rice bran dietary fibers by cellulase hydrolysis, and analyze the reasons for the difference in the functional properties of different rice bran dietary fibers. Methods: Single factor experiment was used to optimize the process conditions. The chemical composition, oil holding capacity and sodium cholate adsorption capacity of rice bran dietary fibers were measured. And the microstructures of rice bran dietary fibers were observed by scanning electron microscope. Results: When the dosage of cellulase was 100 U/g, the reaction time was 5 hours, and the ratio of material to liquid (m rice bran …


The Influence Of Modifying Methods On The Adsorption Of Methylene Blue By Moringa Oleifera Seed Shelling Biochar, Dong Cheng, Li Mei-Ping, Guo Cai-Xia, Yu Li-Gang Nov 2021

The Influence Of Modifying Methods On The Adsorption Of Methylene Blue By Moringa Oleifera Seed Shelling Biochar, Dong Cheng, Li Mei-Ping, Guo Cai-Xia, Yu Li-Gang

Food and Machinery

Objective: The adsorption performance of the seed-shell biochar from Moringa oleifera prepared under different technological conditions on methylene blue was investigated in this study. Methods: The magnetic seed shelling biochar (Fe3O4-MOS) and modified seed shelling biochar (KOH-MOS) were prepared by ultrasonic-assisted K2CO3-Fe3O4 co-impregnation pyrolysis and KOH impregnation pyrolysis at 1 000 ℃, respectively. The physicochemical properties of the samples were characterized by XRD, SEM and FTIR. On this basis, the adsorption characteristics of the two kinds of biochar for methylene blue (MB) solution were determined by equilibrium adsorption method. …


Effects Of Different Fixation Methods On The Quality Of Green Tea Processed By Purple Bud Leaves, Song Xian-Ying, Huang Yan-Mei, Cui Li-Dan, Xiao Wen-Jun, Gong Zhi-Hua Nov 2021

Effects Of Different Fixation Methods On The Quality Of Green Tea Processed By Purple Bud Leaves, Song Xian-Ying, Huang Yan-Mei, Cui Li-Dan, Xiao Wen-Jun, Gong Zhi-Hua

Food and Machinery

Objective: To explore the best fixation method of purple bud green tea. Methods: Using two or three leaves and a bud of self-selected purple bud strain 9803 as raw materials, fresh leaves were treated by microwave, pan-frying, steam and hot air to prepare green tea, and the representative green tea samples were selected for sensory evaluation and quality analysis of taste and aroma. Results: Among the four methods of fixation, the comprehensive score of sensory evaluation of microwave green tea was the highest (89.65), and the main physical and chemical components of microwave green tea, water extract, tea polyphenols, anthocyanins, …


Screening Of Lactobacillus Paracasei Hcs17-040 With Triglyceride Tunction And Study On Its Probiotic Characteristics, Yu Ping, Cao Lan, Jiao Yan-Ping, Zhao Di, Min Xiang-Bo Nov 2021

Screening Of Lactobacillus Paracasei Hcs17-040 With Triglyceride Tunction And Study On Its Probiotic Characteristics, Yu Ping, Cao Lan, Jiao Yan-Ping, Zhao Di, Min Xiang-Bo

Food and Machinery

Objective: This study focuses on obtaining a Lactobacillus strain for degrading triglyceride. Methods: Lactocillus was isolated from human breast milk and the faeces of healthy infants in this study, and their triglyceride degradability was determined by single reagent (GPO-PAP) method. The strains with strong degradation ability of triglyceride were selected for morphological, physiological, biochemical and 16S rDNA identification, and their tolerance to acid, bile salt and gastrointestinal juice was determined. Results: A strain of Lactobacillus Paracasei was isolated and then named as HCS17-040 (CGMCC No 19747), and its degradation rate of triglyceride was (42.80±1.79)%; the survival rates of the strain …


Determination And Correlation Analysis Of Organic Acids In Green Plum With Different Maturity In Different Regions, Zhao Xu-Zhu, Xia Chen, Zhu Yong-Qing, Chen Jian, Chen Yu Nov 2021

Determination And Correlation Analysis Of Organic Acids In Green Plum With Different Maturity In Different Regions, Zhao Xu-Zhu, Xia Chen, Zhu Yong-Qing, Chen Jian, Chen Yu

Food and Machinery

Objective: The organic acid content of green plum was determined, and the correlation between them was analyzed to provide basic data for further processing of products in Dazhou, Sichuan. Methods: The content of organic acids in green plum with different maturity was determined by HPLC, and the correlation of oxalic acid, tartaric acid, malic acid, ascorbic acid, L-lactic acid, acetic acid, citric acid, succinic acid, oleanolic acid and ursolic acid was analyzed. Results: In the same area, citric acid and malic acid in the fully ripe green plum in Jingshi town were higher than those in the seven ripe green …


Studies On Metabolites And Functions Of Soy-Based Plant Fermentation Broth, Li Zhi-Fang, Zuo Zhao-Hang, Wang Ying, Zhang Yu, Wang Di Nov 2021

Studies On Metabolites And Functions Of Soy-Based Plant Fermentation Broth, Li Zhi-Fang, Zuo Zhao-Hang, Wang Ying, Zhang Yu, Wang Di

Food and Machinery

Objective: To explore the changes of metabolites and antioxidant activity of soybean based plant fermentation broth during fermentation. Methods: The experiment was conducted to prepare the compound fermentation liquid from kidney beans and soybean by fermentation of yeast, Lactobacillus and other probiotics, The pH value, total acid, reducing sugar, soluble solids, total phenol, flavone content and antioxidant activity in the fermentation process were analyzed. Results: The pH value of fermentation broth decreased with the extension of fermentation time and gradually stabilized at about 3.55, the total acid content increased from 0.13 mg/mL to 0.43 mg/mL, and the soluble solid content …


Analysis For Smoke Release Characteristics Of Several Central Electrical Heated Cigarettes, He Hong-Mei, You Xiao-Juan, Liu Xian-Jun, Zhu Xian-Yan, Wang Ming-Hui, Shi Huai-Bin, Xu Ru-Yan Nov 2021

Analysis For Smoke Release Characteristics Of Several Central Electrical Heated Cigarettes, He Hong-Mei, You Xiao-Juan, Liu Xian-Jun, Zhu Xian-Yan, Wang Ming-Hui, Shi Huai-Bin, Xu Ru-Yan

Food and Machinery

Objective: Studied the smoke emission characteristics of central electric heating cigarette. Methods: The release amount and stability of total and puff-by-puff mainstream smoke were investigated by taking seven domestic cigarettes (Cigarettes A-G) and one foreign cigarette (Cigarette H) as the samples. The factors that may influence smoke release stability were discussed. Results: ① The transfer ratios of nicotine and glycerol in Cigarettes H were the lowest; ② The smoke release stability of Cigarettes H was the highest; ③ The release behavior of TPM, nicotine and glycerol on a puff-by-puff basis all showed increase-decrease trend with the increase of puff sequence, …


Study On Photoelectric Detection Method Of Nitrite Content In Food With Microfluidic Mixer Chip, Pang Hao-Ran, Xie Jia-Qing, Guan Qi-Feng, Meng Xiao-Yu, Sun Ru-Qian, Zhou Fu-Yang Nov 2021

Study On Photoelectric Detection Method Of Nitrite Content In Food With Microfluidic Mixer Chip, Pang Hao-Ran, Xie Jia-Qing, Guan Qi-Feng, Meng Xiao-Yu, Sun Ru-Qian, Zhou Fu-Yang

Food and Machinery

Objective: A high-precision, low-cost quantitative and rapid detection method of nitrite in food based on photoelectric detection principle was proposed, and a portable nitrite detector equipped with microfluidic mixer chip was constructed. Methods: The microfluidic mixer chip was designed to realize the rapid mixing of test samples. The mixing efficiency of the chip was verified by peristaltic fluid simulation. The influence of UV curing parameters on the microfluidic mixer chip channel accuracy was analyzed, the microfluidic mixer chip was prepared. The photoelectric detection system of nitrite was designed and established. The relationship between nitrite content and induced voltage was analyzed, …


Construction Of Off-On Electrochemiluminescence Sensor Based On Doped Graphene Quantum Dots For Continuous Determination Of Fe3+ And F-, Zhang Xiao-Wei Nov 2021

Construction Of Off-On Electrochemiluminescence Sensor Based On Doped Graphene Quantum Dots For Continuous Determination Of Fe3+ And F-, Zhang Xiao-Wei

Food and Machinery

Objective: The study focused on investigating the electrochemiluminescence properties of graphene quantum dots. Methods: By doping heteroatoms into graphene quantum dots (GQDs), the surface chemical reactivities and optical characteristics of GQDs could be effectively improved. Nitrogen and sulfur co-doped graphene quantum dots (NS-GQDs) were prepared using a one-step solonthermic method. Based on its excellent luminescent properties, an “off-on” electrochemiluminescence (ECL) sensor was constructed for the simultaneous determination of Fe3+ and F-. Results: Under the optimal conditions, the quenched ECL value of NS-GQDs was linearly related with the Fe3+ concentration in the range 0.1~460.0 μmol/L, and the …