Food Processing Commons^™

Study On The Sources Of Nickel In Jujube Fruit, Yan Qiao-Li, Hua Zhen-Yu, He Wei-Zhong, Tao Yong-Xia, Wang Cheng

Food and Machinery

Through the analysis of the total content of heavy metal nickel in soil, pesticide, fertilizer, farmyard manure and atmospheric dust samples, the exogenous input pathway of heavy metal nickel in jujube in typical areas was determined. ICP-MS (inductively coupled plasma mass spectrometry) was used to analyze the content of heavy metal nickel in the samples. The results showed that the tested soil and fertilizer samples contained heavy metal nickel in the range of 17.194~67.279 and 0.450~26.800 mg/kg, respectively. The total content of nickel in chicken manure, bioorganic fertilizer, amino acid water-soluble fertilizer and phosphate fertilizer was relatively high. In the …

Distribution And Correlation Of Pb Between Procambarus Clarkii And Aquaculture Environment In Hunan Province, Tian Jin-Jin, Zhu Yu-Lin

Food and Machinery

She sampling survey was used to sample the cultured P. clarkii and the environment from the freshwater shrimp breeding base in Hunan province. Tested the Pb content and performed statistical analysis on the relevant data. The results showed that the Pb content in shrimp, culture water and bottom sediment was Yiyang＞Yueyang＞Changde city in Hunan province. Among them, Yiyang city had the highest Pb over-standard rate, which was 63%. Significant differences in Pb content in shrimp head, tail, and water sediments were found in different city (P＜0.05), and Pb content between different city of culture water are not statistically significant differences …

Numerical Simulation And Optimization Of Piping Turbulence In Bubbling Fish Cleaner, Li Lu, Zhang Zhi-Ming, Wu Wen-Jin, Wang Lan, Xiong Guang-Quan, Shi Liu

Food and Machinery

First, Fluent software was used to numerically simulate the internal flow field of the shunt tube in the bubbling line, and standard k-ε turbulence model was applied to simulate the velocity profile of each vent gas on the manifold. The results showed that 40 cm was the opportune length of the shunt tube to obtain the similar flow rate of each gas jet, and the uniform and controllable bubbles. Then, the Mixture multiphase flow model and the extended standard k-ε turbulence model were used to simulate of the jet aperture and the hole spacing on the shunt tube. The results …

Design And Test Of An On-Line Measuring System For Vacuum Freezing Dryer, Zhao Hai-Bo, Peng Xin, Wu Kun, Dai Jia-Ao

Food and Machinery

To obtain real-time water contents and temperatures of vacuum freezing drying process, and to facilitate monitoring of drying process, a novel online measuring system (OMS) for vacuum freezing dryer was proposed and experimental tests were carried out. The system was composed of a microcontroller, a strain pressure sensor, a thermal resistance, modulus conversion modules, an OLED screen and other components. Wireless data transmission was used, and temperature correction and vibration reduction were carried out in the design. Experimental tests showed that the system could be used to measure the weight, moisture content and temperature in real time during the vacuum …

Dimension Detection Of Micro Parts Based On Universe Quantum Algorithm, Xiong Bao-Yu, Jian Qing-Ping

Food and Machinery

Dimension detection of micro parts was proposed based on universe quantum algorithm. The operation efficiency of the quantum algorithm was improved by using the master-slave space structure, and the edge of micro-parts was detected by non-orthogonal quadratic B-spline wavelet and least square wavelet support vector regression, with the dimension detection of micro parts process. Experimental simulation showed that the universe quantum algorithm had smaller fluctuation range for the dimension measurement data of micro parts, and the variance value was lower than other methods. The measurement variance of outer wheel diameter reduced 75.29%, 78.40%, 64.47%, 60.95% and 52.15%, respectively, comparing with …

A Design Of The Device For Clam Sorting And Impurity Removing, Bao Cheng-Wei, Duan Lan, Song Meng-Hua

Food and Machinery

In order to optimize the traditional manual method for clam sorting, a device was designed, based on the biological characteristics of clams and the principle of centrifugation and different density, to solve the problem of clam sorting, screening and impurity removing. The devicewas composed of three grades of rings with different clearance rollers for screening clams with different shell thickness. It could screen out small shells, conch and gravel. Through simulation analysis, the structural strength and stiffness of the device met the design requirements. Through the application, it was proved that the equipment could effectively improve the efficiency and accuracy …

Design And Analysis Of The Cylinder Cam Mechanism Of The Group Cover Machine, Li Gan, Yin Cheng-Long, Jiang De-Fu, Ke Wan

Food and Machinery

The cam profile of the cylindrical cam mechanism of the bottle cap assembly machine is designed, the curve is fitted, the three-dimensional model of the SolidWorks is established, and the cylindrical cam and the cylindrical cam of the sinusoidal curve fitting are simulated in Adams by the cylindrical cam and the sinusoidal curve fitting of the five polynomial curve fitting. The result of the simulation is compared and analyzed, which shows that the design of the cam wheel can be used in the manufacture of the cylindrical cam mechanism of the actual group cover machine.

Powder Packaging Measurement Control System Based On Fuzzy Neural Network Pid Control, Wang Yan, Chen Jing, Wang Zhi-Shan, Li Kun-Xiang, Xu Yun, Xu Xue-Memg

Food and Machinery

The work aims to the delay and nonlinearity of powder packaging metering control system caused by sensor, screw rotation inertia, zero drift, cutting impact and other factors, the powder packaging metering control system based on fuzzy neural PID control is proposed. Using the good dynamic control characteristic and self-learning ability of the fuzzy neural network to adjust the PID control proportion, integral and differential three adjustment parameters. The simulation and simulation of the system was carried out with the help of MATLAB simulink simulation software. The results show that the fuzzy neural network PID control system can shorten the stability …

Design Of Automatic Feeding System For Pasta Fermentation Machinery, Zhang Li-Hua, Dong Tian-Fei, Niu Wen-Zhao

Food and Machinery

An optimization method of automatic fermentation system control based on digital signal processing (DSP) was proposed. Aiming at the optimization of the automatic feeding system in the automatic fermentation system, the error feedback control algorithm was used to design the automatic feeding control of the pasta fermentation machinery, and the hardware design of the automatic feeding system of the pasta fermentation machinery was based on the algorithm design. The results showed that the designed automatic feeding system of pasta fermentation machinery had good human-computer interaction and strong system stability, and the control error was only 0.1% when iterating 500 times …

A Vision-Based Image Detecting System For Cigarette Tipping Machine, Wu Chen-Gang, Yang Chen, Xie Chong-Quan, Zhang Rui-Ping

Food and Machinery

In this paper, a kind of cigarette tipping paper detection system based on machine vision is proposed, which uses STM32 as the core controller to control the timing synchronization of the coiler. The cigarette tipping paper on the transition drum is collected by the industrial camera, and the length of the cigarette paper is calculated and measured, and the unqualified cigarette is eliminated. At the same time, the unqualified cigarette tipping paper and detection data are recorded by the guide rail scale. Through practical application, the detection accuracy of the system is better than ±0.05 mm, and the maximum detection …

Effect Of Frozen Storage Time On The Oxidation Degree Of Porcine Myofibrillar Protein, Li Qian, Yu Li-Gang, Yang Yu-Kun, Li Mei-Ping, Guo Cai-Xia

Food and Machinery

In this study, myofibrillar protein was used as the research object to investigate the effect of different frozen storage time on the oxidation degree of myofibrillar protein of pork. Raw pork was stored at 18 ℃ for different time (0, 1, 4, 8, 12 weeks), and used for the extraction of myofibrillar protein. Then protein oxidation parameters (carbonyl, total sulfhydryl group, free amino groups, surface hydrophobicity and endogenous tryptophan fluorescence) were determined. The results suggested that, carbonyl content increased significantly (P＜0.05), and total sulfhydryl group, free amino groups, surface hydrophobicity and endogenous tryptophan fluorescence content generally showed a decreasing trend …

Effects Of Active Peptide Components Of Eupolyphaga Steleophaga On Blood Rheology, Four Indicators Of Blood Lipids And Blood Factor Levels In Rats With Acute Blood Stasis, Jiang Shan, Wang Shao-Ping, Dai Long, Zhang Jia-Yu, Gao Peng, Liu Zi-Han, Wang Yu-Qi

Food and Machinery

Pepsin and trypsin complex enzymes were used for biomimetic enzymatic hydrolysis of Eupolyphaga steleophaga. In order to obtain the most active fibrinolytic activity of the soil aphid active peptide component F2, the product was subjected to desalting, ultrafiltration, nanofiltration, DA201-C macroporous adsorption resin, dextran gel G-25 chromatography, reverse high performance liquid chromatography and semi-preparative liquid chromatography. Moreover, its effects on hemorheology index, blood lipids and serum nitric oxide (NO), superoxide dismutase (SOD), tissue plasminogen activator (t-PA) and fibrin (FIB) content of rats with acute blood stasis were also studied. E. ste-leophaga active peptide component F2 could significantly reduce blood …

Effects Of Different Pretreatment Methods On The Quality Characteristics Of Red Rose By Hot Air Drying, Zhang Meng, Duan Xu, Ren Guang-Yue, Zhou Si-Qing, Xu Yi-Ming

Food and Machinery

In order to understand the effect of different pretreatments on the hot air drying characteristics and quality of red rose, four different pretreatment methods ,i.e. impregnated 5% citric acid solution, 20% sugar solution, 20% NaCl and citric acid mixed solution and blanching, the pretreated petals were used as the control, to conduct comparative experiments and analysis of hot air drying. Sensory properties (color, total flavonoids, total phenols) and microstructure of red rose were examined, and combined with fuzzy mathematical comprehensive evaluation method for sensory evaluation. The results showed that drying rate of rose petals was influenced significantly by different pretreatment …

Research Progress On Anaerobic Fermentation Mechanism And High-Density Anaerobic Fermentation Of Clostridium Butyrate, Wu Tian-Fu, Xie Xiao-Lin, Chen Mei-Biao, Zhou Lian, Chen Meng, Deng Ming-Rong, Yao Qing, Zhu Hong-Hui

Food and Machinery

In this paper, the mechanism of anaerobic fermentation of Clostridium butyrate, the mode of high-density anaerobic fermentation and the application of bioreactor are rviewed in order to realize the high-density fermentation of Clostridium butyrate in industrial production by improving the anaerobic fermentation process or improving the fermentation equipment, so as to greatly increase the number of live bacteria and reduce the production cost.

Moisture Sorption Behavior And Shelf Life Prediction Of Teff Seed And Flour, Baba Abdissa, Rudrayya Math, Kodandaramreddy Desham, Srinivasulu Korra

Journal of Applied Packaging Research

Moisture sorption isotherms of Teff seed and its flour were determined over the range of relative humidity (11–92%) using a gravimetric technique at constant temperature (27°C). The results obtained showed that the moisture sorption isotherm of both is almost similar and sigmoid with increasing equilibrium water content at the constant temperature. The curves start raising high above 64% RH indicating the products deteriorates faster above 64% RH. Hence the moisture content equilibrating to 64% RH was taken as critical for both Teff seed and flour variants. The sorption isotherm fits the GAB equation as per GAB generalized equation for sorption …

Labeling Compliance And Species Authentication Of Fish Fillets Sold At Grocery Stores In Southern California, Priscila Liou, Angela Banda, Rachel B. Isaacs, Rosalee S. Hellberg

Food Science Faculty Articles and Research

Seafood mislabeling has numerous consequences, including economic deception and food safety risks. The focus of this study was to investigate fish species labeling, use of acceptable market names, and Country of Origin Labeling (COOL) compliance for fresh fish fillets sold at grocery store seafood counters in Southern California. A total of 120 fillets representing 16 different categories of fish were collected from 30 Perishable Agricultural Commodities Act (PACA)-listed grocery stores. Each sample underwent DNA barcoding to identify the species. Acceptable market names were confirmed using the FDA Seafood List. Samples were determined to be compliant with COOL if both …

An Evaluation Of Sonication Pretreatment For Enhancing Saccharification Of Brewers’ Spent Grain, Shady Hassan, Rajeev Ravindran, Swarna Jaiswal, Brijesh K. Tiwari, Gwilym A. Williams

Articles

This paper deals with the investigation of ultrasound (US) pretreatment of brewer’s spent grain (BSG) as ameans of releasing fermentable sugars, and the subsequent production of ethanol from this lignocellu-losic biomass. Using response surface methodology (RSM), the influence of US power, time, temperatureand biomass loading on fermentable sugar yield from BSG was studied. The optimal conditions werefound to be 20% US power, 60 min, 26.3°C, and 17.3% w/v of biomass in water. Under these conditions,an approximate 2.1-fold increase in reducing sugar yield (325 ± 6 mg/g of biomass) was achieved, relativeto untreated BSG (151.1 ± 10 mg/g of biomass). In …

Characterization And Use Of Pathogen Specific Bacteriophages To Reduce The Viability Of Escherichia Coli O157:H7 Contamination On Fresh Produce, Badrinath Vengarai Jagannathan

Theses and Dissertations--Animal and Food Sciences

Fresh produce is one of the most common sources of food-borne outbreaks, involving various pathogenic microorganisms such as Escherichia coli. Recent outbreaks have clearly shown that post-harvest washing has limited effectiveness on decontaminating produce and may contribute to cross-contamination of produce due to various limitations. Excessive use of sanitizers and antibiotics has also led to the development of many antibiotic-resistant strains of bacteria that have made the food industry more vulnerable.

Bacteriophages are a bacterial viruses that can selectively infect and replicate within bacteria leading to cell lyse and death. Bacteriophages have become widely recognized due to their ability …

Ecosystem Of Bagged Grain Stored Under Naturally Ventilated Warehouse: Analysis And Modelling, Michael Ayodele Omodara

Theses and Dissertations--Biosystems and Agricultural Engineering

Grain in Africa and indeed most developing parts of the world are stored in polypropylene or jute bags arranged in stacks of varied dimensions in naturally ventilated warehouses. This practice is, however, associated with high postharvest losses due to poor temperature and moisture management during storage. This constitutes a major economic and food security challenge in these countries. Therefore, this study characterizes changes in moisture content and temperature occurring in a stack of bagged corn by determining the permeability of bag materials that influence moisture transfer and developing a mathematical model of heat and mass transfer which incorporates the unique …

Physicochemical Characterization, Structural Determination, And Molecular Dynamic Modeling Of Proso Millet Proteins For Enhanced Food Functionality, Felix Akharume

Theses and Dissertations--Biosystems and Agricultural Engineering

More than one-third of Americans today incorporate plant-based protein into their diet and about 40% believed that plant-based protein is healthier than animal protein, especially Millennials. The increasing global demand for plant-based proteins driven by the high cost of animal proteins, consumers’ desire for lean protein, vegetarianism, and the need for more sustainable green protein products have necessitated research into alternate emerging and underutilized sources of protein to complement or supplement the major plant protein in the market- soy, pea, and gluten. Therefore, this dissertation is focused on the valorization of the proteins in proso millet. Specifically, this work focused …