Food Processing Commons^™

Flow Field Analysis On Ultra-Fine Pulping Andpulverizing Cutter Head By Fluent, Zhang Xiong, Dai Ning, Zhu Haiqing, Zhang Yuzhong

Food and Machinery

Two kinds of tooth type pulverizing cutter heads are designed based on the principle of superfine pulverization technology, and two kinds of pulverizing knives are analyzed using Fluent simulation software at the speeds of 6 000 r/min, 9 000 r/min and 12 000 r/min. The variation of pressure and speed inside the head was studied. Then the pulverization effect of the two cutter heads was verified by the material pulverization experiment. At the same time, the energy consumption of the two cutter heads was compared and analyzed. Results: The central structure was a four-blade blade tooth-crushing cutter head. The time …

Test And Analysis Of Mechanical Properties Of Rubber Fruit Shell Breaking, Wang Yuanrong, Wang Tao, Nie Junfeng

Food and Machinery

In order to study the changing rule of static compressive shell breaking force of rubber fruit under different conditions, the rubber fruit was subjected to the static compression test of the shear force, stabbing force and extrusion force in the loading direction of X, Y and Z respectively. The mechanical model of rubber fruit was established by using finite element method to study the stress and strain and damage law of rubber fruit under compressive load. The test results showed that the relationship between the shell breaking force of the rubber fruit under shear force, stabbing force and extrusion force …

Optimization Of Egg White Protein Spray Drying Process And Its Characteristics, Chen Ke, Liu Lili, Meng Yuanyuan, Dai Xiaoning

Food and Machinery

In this study, egg albumin was used to study the functional properties and structural changes of its relative powder under the optimal spray drying conditions. Taking powder yield rate as index, the optimum process conditions of spray drying were made of the de-sugaring time of 32 h, the feed liquid speed of 466 mL/h, the egg white liquid mass concentration of 29%, the inlet temperature of 140 ℃ and the outlet temperature of 65 ℃. Under this condition, the powder yield rate was 16.17%. The effect of spray drying on the functional properties of egg albumin, such as solubility, emulsifying …

Effects Of Spray Drying And Vacuum Freeze-Drying On The Quality Of Walnut Meal And Jujube Compound Powder, Fu Luying, Yuan Shuangjin, Chen Hao, Zhang Runguang, Zhang Youlin

Food and Machinery

The compound powder of walnut meal and jujube was prepared by spray drying and vacuum freezing drying with walnut meal and jujube as raw materials. Investigated the powder yield, moisture content, protein content, bulk density, fluidity, solubility, color difference value, microstructure, simulated digestion of protein in vitro and thermal stability. The results showed that the powder yield of vacuum freeze-drying was significantly higher than that of spray drying, but the time was longer, the moisture content and bulk density were higher than spray drying, and the rest angle was lower than spray drying. It shows that vacuum freeze-drying of compound …

Sources And Biological Functions Of Citrus Polymethoxy Flavones, Zhang Mengling, Li Qili, Li Gaoyang, Fu Fuhua, Xiao Yecheng, Shan Yang, Yu Huanling

Food and Machinery

This study reviewed the sources and biological functions of polymethoxy flavones, and discussed the existing problems in the current research.

Thermal, Interfacial, And Application Properties Of Pea Protein Modified With High Intensity Ultrasound, Aeneas Koosis

Theses and Dissertations--Animal and Food Sciences

The overall objective of the study was to investigate different food ingredient conditions and ultrasound treatment on pea protein in terms of surface morphology and thermal characteristics. The motivation of this work was based on previous studies focusing on non-chemical physical modifications of plant proteins and the increasing demand for functional alternative proteins.

Ultrasonication time and amplitude, pH, protein concentration, and salt concentration all influenced the thermal and interfacial properties of pea protein. Ultrasound treatment altered the quaternary and tertiary structure of the storage protein and disrupted non-covalent bonds. The structural altercations and a reduction in particle size led to …

Antimicrobial Effects Of Microwave-Induced Plasma Torch (Minimip) Treatment On Candida Albicans Biofilms, Oliver Handorf, Uta Schnabel, André Bösel, Thomas Weihe, Sander Bekeschus, Alexander C. Graf, Jörg Ehlbeck

Articles

The susceptibility of Candida albicans biofilms to a non-thermal plasma treatment has been investigated in terms of growth, survival and cell viability by a series of in vitro experiments. For different time periods , the C. albicans strain SC5314 was treated with a microwave-induced plasma torch (MiniMIP). The MiniMIP treatment had a strong effect (reduction factor (RF) = 2.97 after 50 s treatment) at a distance of 3 cm between the nozzle and the superior regions of the biofilms. In addition, a viability reduction of 77% after a 20 s plasma treatment and a metabolism reduction of 90% after a …

Production And Storage Stability Of High Concentrated Micellar Casein And Its Effect On The Functional Properties Of Process Cheese Products, Ahmed Hammam

Electronic Theses and Dissertations

Micellar casein is a high-protein ingredient that can be used in process cheese products (PCP) formulations. PCP is a dairy food prepared by blending dairy ingredients (such as natural cheese, protein concentrates, butter, non-fat dry milk NFDM, whey powder, and permeate) with nondairy ingredients (such as sodium chloride, water, emulsifying salts, color, and flavors) and then heating the mixture with a continuous agitation to produce a homogeneous product with an extended shelf-life. The first objective of this study was to produce a highly concentrated micellar casein (HC-MC) and evaluate its storage stability. Skim milk was pasteurized at 76°C for 16 …

Atmospheric Cold Plasma Interactions With Microbiological Risks In Fresh Food Processing, Apurva Patange

Doctoral

Atmospheric cold plasma (ACP) is a novel emerging non-thermal technology that has attracted attention as a decontamination tool in several industrial, food and healthcare sectors. This study investigated the anti-microbial efficacy of ACP against microbiological risks associated with fresh foods. Treatment was performed using in-package ‘dry’ ACP technology and plasma functionalised liquid to decontaminate microorganisms, exploring the responses to real and challenging microbiological risks pertinent to both fresh foods themselves as well as the effluents generated from food processing industry. A range of critical control process parameters were investigated with respect to key pathogenic and spoilage microorganisms commonly implicated in …

Characterization Of Lipids And The Protein Co-Products From Various Food Sources Using A One-Step Organic Solvent Extraction Process, Alleda Rose

Graduate Theses, Dissertations, and Problem Reports (ETD)

Traditional lipid extraction methods are labor intensive and time-consuming so interest in one-step methods using various organic solvents are gaining in popularity. Extraction efficiency depends heavily on the solvents used yet comparisons between different solvents are lacking. Defatting techniques are commonly used to concentrate crude protein and may be useful for enhancing protein content in food sources. The objective of this research was to 1) determine the lipid extraction efficiencies of hexane (H), 3:2 hexane-isopropanol (HI), chloroform (C), 2:1 chloroform-methanol (CM), and methyl-tert-butyl-ether (MTBE) using a one-step organic solvent lipid extraction method on whole insect, egg yolk, and krill powders …

Farm To Label: A Critique Of Consumer Activism In The Sustainable Food Movement, Olivia Whitener

Pomona Senior Theses

“Local,” “organic,” “natural,” and “Fairtrade” are just several of the many claims adorning the food products that line grocery store shelves. These promises of environmental sustainability and social responsibility are pillars of the “good food revolution” sweeping the nation as consumers demand alternatives to the products of the industrial food system. Green consumerism, the premise that consumer demand for environmentally sustainable goods will bring about ecologically beneficial outcomes, is at the heart of the sustainable food movement. This thesis takes a critical look at the operation of green consumerism in the food system. It explores the ideology and shortcomings of …

Effect Of Cold Plasma On The Techno-Functional Properties Of Animal Protein Food Ingredients, Juan M. Pérez-Andrés, Carlos Álvarez, Patrick J. Cullen, Brijesh K. Tiwari

Articles

Proteins, as food ingredients, are employed in the food industry, not only for their high nutritional value, but also because of their techno-functional properties. Modifications of their native structure due to the action of external factors such as pH, temperature or processing by emerging technologies, can lead to changes in their functionality; and consequently, their applicability. The present study investigates the effects of cold atmospheric air plasma on the techno-functional properties of two common food ingredients (haemoglobin and gelatine from pork), and a novel source of functional proteins extracted from a meat co-product (bovine lung protein). Significant effects were found …

Development And Diagnostics Of Novel Non-Thermal Plasmatreatment Systems, Laurence Scally

Doctoral

Non-thermal plasma (NTP) has been a point of interest in many areas over the last few decades. Much research has been,and continues to beundertaken,to understand the fundamentals of plasma discharges. This is such a broad topic due to the very nature and variable dependencies that set the conditions for plasma discharge to occur. This can come in the form of electrode geometry and spacing, dielectric barrier thickness, humidity of environment, material selection for electrodes and dielectric barriers, the power supply used, and the operating gas(es) used. A lot of these influencing factors can be set and kept constant, but still …

Efficacy Of Cold Plasma Functionalised Water For Improving Microbiological Safety Of Fresh Produce And Wash Water Recycling, Apurva Patange, Peng Lu, Daniela Boehm, Patrick J. Cullen, Paula Bourke

Articles

Atmospheric cold plasma (ACP) is an effective method for microbiological decontamination. This study evaluated an alternative water-based decontamination approach for inactivation of bacterial population from fresh produce and in the wash water generated from fresh produce washing. The study characterised ACP inactivation of attached Listeria innocua and Pseudomonas fluorescens inoculated on lettuce in comparison to chlorine treatment. P. fluorescens was sensitive to ACP treatment and was reduced below detection limit within 3 min of treatment. L. innocua population was reduced by ∼2.4 Log10 CFU/g after 5 min of treatment; showing similar inactivation efficacy to chlorine treatment. The microbial load in …

Reflection On The Alienation Of Modern Food Packaging Design, Xu Jiao, Sun Xiangming

Food and Machinery

In the contemporary social, food packaging design is no longer simply used to protect food and facilitate transportation, but also carries the use of brand image and product marketing promotions. However, when the commerciality of food packaging is overstated, food packaging becomes a commercial tool, triggering a series of food packaging design. The problem of alienation is that food packaging originally serves people, which in turn restricts and affects their own development. Through the analysis of alienation phenomenon in food packaging design, this study intends to warn people to predict the possible consequences of design in time and objectively in …

Intelligent Design And Intelligent Manufacturing Of Ceramic Packaging Containers In The Era Of Iot, Zhang Yushan, Wen Weiming

Food and Machinery

Through the analysis of European and American fashion products the intelligentization and the latest achievements in the design and manufacture of the Internet of Things (LOT) intelligently infer and predict the application and future development of the intelligent design and manufacturing of the ceramic packaging container industry. The combination of traditional handicrafts and contemporary technology has transformed the traditional one-way production into the benign cycle of design, production, warehousing, sales, logistics, service artificial intelligence and IoT systems, greatly improving the efficiency and accuracy of operations, and making them personal and Limited customization has become an important development direction in the …

Design Of Intelligent Milk Machine Based On User Behavior Contact, Wang Weiwei, Wang Wei, Li Huanni

Food and Machinery

In order to optimize and upgrade the intelligent milk machine, solve the problems encountered during the operation, a intelligent milk machine that improves the user's operating experience was designed by analyzing the users' behavioral contacts. The users’ behavior were observed to identify the touch points of using process and sort the contact priorities. Moreover, intelligent milk machine was designed by analytic hierarchy process. According to the design method, the demand point was transformed into a design opportunity to construct a intelligent milk machine design framework. Based on user behavior, intelligent milk machine was produced for the users to operate it …

Determination Of Benzaldehyde Residues Contents In Honey By Hplc-Ms Using Rhodamine B Hydrazide As The Pre-Column Derivatization Reagent, Peng Xue, Han Rui, Chen Liying, Wang Yue, Zhu Guiping, Cao Ruifang, Zhong Tingting, Shen Guanghui, Luo Qingying, Zhang Zhiqing, Li Shanshan

Food and Machinery

A novel HPLC-MS method was established, using a synthesized rhodamine B hydrazide (RBH) as the new pre-colunm derivatization reagent. After extracted with methanol and derivatized with RBH, the samples were determined by high-performance liquid chromatography(HPLC) coupled with mass spectrometry(MS). The results showed that the reagent RBH has a good sensitivity for mass spectrometry detection, and the derivatization reaction of benzaldehyde was efficient and specific. The benzaldehyde showed a good linear relationship in the range of 0.05～6.00 ng/mL, and the correlation coefficient was 0.996 2. The detection limits and quantitation limits of the method were 0.80×10^-3 ng/mL and 2.71×10^{-3 …}

The Improved Design And Simulation Study Based On Unpowered Roller Conveyor, Liu Zhihai, Cui Xinlong, Bai Hailong

Food and Machinery

Because of the humidity in the tofu factory, a pneumatic conveyor was designed to carry food boxes in the humid factory. The cylinder telescoped to provide power for the whole conveyor. In this study, the basic structure and working principle of the conveyor were described, and the velocity relationship between the input and output components was deduced for the need of equipment improvement and control. The working process of the conveyor was simulated by using the fluid dynamics simulation software flow 3D, which verified its practical feasibility and provided a data reference for the later electromechanical control.

Effects Of Aging Time And Cooking Degree On Volatile Flavors Of Beef, Wang Hengpeng, Wu Peng, Chen Shengsu, Tu Mingliang, Gao Ziwu, Xie Jing, Yang Tianyi, Chen Chang, Meng Xiangren

Food and Machinery

In order to study the effects of aging time, cooking degree and their interaction on beef flavor components, the longissimus dorsi of Simmental cattle in the process of aging time (3, 5, 7 d) were selected to make steaks of medium, medium well and well done. Volatile flavor components in different aging times and cooking degree were analyzed by headspace solid-phase microextraction (HS-SPME) combined with gas chromatography-mass spectrometry (GC-MS), explored the best aging time and cooking degree which were beneficial to flavor substances formated. Results showed that, a total of 50 volatile compounds were identified in each beef sample. The …

Study On The Packaging Quality Stability Of Paper-Packaging Machines For Chinese Dried Noodles, Zong Xiangdong, Fu Junhui, Jiao Zuiping, Wang Ruibin, Zhao Bo, Wei Yimin

Food and Machinery

To determine the packaging quality stability of paper-packaging machines (HNQ) for Chinese dried noodles based on the key technology improvement, and to meet demands from noodle industries to packaging stability and efficiency, the production lines of a dried noodles manufacturing industry were sampled for investigation. The packaging effects of two kinds of packaging machines (HNQ and SDH) and four same machines in a line were for each kind were tested and analyzed. The results showed that no significant difference in the instant weight of packaged noodles between the SDH packaging machines was found. The differences of coefficient variation (CV%) among …

Determination And Content Analysis Of Phenolic Compounds In Different Late-Maturing Citrus Of China, Zhang Jing, Zhu Lisha, Zhang Yaohai, Zhao Jing, Dong Chao, Jiao Bining

Food and Machinery

In order to provide scientific basis for the utilization of citrus resource and improvement of comprehensive utilization value of fruits, the ultra-performance liquid chromatography (UPLC) was used to determine the main phenolic substances (flavonoied and phenolic acids) in nine Chinese late-maturing citrus. The different phenolic compounds and their contents were analyzed in pulp, juice and peel. The results showed that flavonoids were mainly hesperidin in the parts of the nine citrus varieties, and phenolic acids were mainly ferulic acid, and the content of PMFs in the pericarp was rich. In the juice of nine citrus, the contents of hesperidin and …

Uncertainty Evaluation For The Determination Of 3 Plasticizers In Liquor By Gc-Ms/Ms, Yan Shunhua, Ye Qing, Han Jinxuan, Dilinuer Shabituofu

Food and Machinery

To evaluate the uncertainty of measurement in the determination of DIBP, DBP and DEHP in Liquor by GC-MS/MS. According to “JJF 1135—2005 Evaluation of Uncertainty in Chemical Analysis Measurement” and “JJF 1059.1—2012 Evaluation and Expression of Uncertainty in Measurement”, a mathematical model was established for uncertainty evaluation. The sources of uncertainty that may be introduced were analyzed and each component of uncertainty was quantified for the calculation of the combined uncertainty, The results showed that the expand uncertainty for DIBP, DBP, DEHP were 0.060, 0.062, 0.17 mg/kg, respectively. The preparation of standard solution, measurement repeatability and curve fitting were found …

Research On The Effect Of Acoustic Mode On Ultrasonic Broken Cavitation Field, Feng Lili, Liu Bin, Wu Xue, Xu Xuedong, Li Zilu

Food and Machinery

The immersion ultrasonic crushing device under 20 kHz is investigated in this study. Combined the sound field analysis and the finite element method, we firstly examine the acoustic mode properties of ultrasonic crushing material cavity on different sound field conditions, i.e. the height of liquid level and the position of sound source, and then explore the distribution of ultrasonic cavitation field and the change laws on the average acoustic energy density. Finally, experiments with acoustic measurement methods and image acquisition are made to verify these explorations. Experimental results shows that the distribution of ultrasonic cavitation field is related to the …

Origins And Risk Assessment Of Thiocyanate In Raw Milk From 21 Farming Village Of Hebei Province, Sheng Qinghai, Tian Tingting, X Uli

Food and Machinery

In order to investigate the content of thiocyanate in raw milk, tracked the content of thiocyanate in 930 milk samples from 21 cattle-raising areas in Hebei Province in the past two years from 2014 to 2015. The results showed that the content of thiocyanate in those 930 milk samples ranged from 1.86 to 11.92 mg/L, and the detection rate was 100%. The results suggested that the thiocyanate in raw milk was all originated from the background, and there was no artificial addition. It was also found that the seasonal distribution of thiocyanate content in raw milk had no significant difference. …

Rapid Quantitative Prediction Model Of Adulterated Goat Milk Based On Electronic Tongue, Han Hui, Wang Zhiqiang, Li Caihong, Ma Zeliang, Guo Tingting, Yin Tingjia

Food and Machinery

In order to discriminate adulterated goat milk quickly and objectively, a set of portable electronic tongue detection system was exploited, and a new method of fast identification is developed. When detected in the system, the sample solution was first scanned to obtain the "fingerprint" information of adulterated goat milk, and then the discrete wavelet transform (DWT) was used to obtain the characteristics of the "fingerprint" data. On this basis, the principal component analysis (PCA) was used to determine the quality of goat milk with different adulteration ratio. Particle swarm optimization extreme learning machine (PSO-ELM) was applied to quantitatively predict goat …

Migration And Change Of Heavy Metal During The Pickling Of Candied Fruits, Li Wenxiang, Zhou Songhang, Wang Can, Long Qiang, Liu Yang, Lin Wenhua, Cao Xiaoyan

Food and Machinery

In this study, based on the determination of heavy metal residues in raw materials, the migration behavior of heavy metal in candied fruits was preliminary analyzed by monitoring dynamic changes of heavy metal content during pickling. The results showed that the contents of Plumbum, Cadmium, Chromium, Mercury and Arsenic in raw materials were 0.151 0, 0.024 1, 0.110 0, 0.000 0, 0.013 2 mg/kg, respectively; During the pickling process, residual heavy metal elements could migrate into the pickling solution, and significant differences were found in migration and relative behavior for different heavy metal elements. The contents of Plumbum, Cadmium, Cadmium …

Effects Of Microwave On Free Radical Production And Oxidative Properties Of Model Protein, Wang Tingting, Yuan Jiangfeng, Wang Lunji, Zhang Bin, Qiu Zhijun, Gong Minggui, Yin Qihang

Food and Machinery

Bovine Serum Albumin (BSA), a model protein, was used to study the relationship between the free radical production and oxidative properties in the microwave field. Electron paramagnetic resonance (EPR) trapping with 5,5-dimethyl-l-pyrrolin N-oxide (DMPO) was used for the detection of free radical produced by BSA under different microwave treatment conditions. The signal intensity of free radicals arose from BSA solution via the increasing of power, temperature, and time after microwave irradiation. By measuring the carbonyl, thiol and surface hydrophobic oxidative properties of BSA under different microwave temperatures. It was showed that the carbonyl content increased, the thiol content decreased, and …

Effects Of Atmospheric And Vacuum Concentrationon Free Amino Acids Of Chicken Soup, Wu Jia, Xia Yangyi, Yan Mengxi, Zhang Guoxing

Food and Machinery

The changes of amino acid and other related indexes in chicken soups which were concentrated under atmospheric pressure and vacuum were studied. The results were as follows: with the increase of concentration ratio, the contents of crude protein, oligopeptide and reducing sugar in chicken soups were gradually reduced. Under the same concentration ratio, the crude protein content in atmospheric concentration chicken soups was higher than that in vacuum concentration chicken soups (P＜0.05), while the oligopeptide content in vacuum concentration chicken soups and the reducing sugar in chicken soups with concentration ratio greater than 1∶2 were higher than that in atmospheric …

Variations Of Size Distribution Of Tobacco Strips Separated From Different Threshing And Pneumatic Separation Unit, Liang Miao, Liu Maolin, Yang Yongfeng, Wang Genfa, Yang Zongcan, Zhang Junsong, Xiao Jinzhe, Lu Minrui, Liu Xiangzhen

Food and Machinery

In order to study the variation of size distribution of tobacco strips from different threshing and separation unit, an upper blend tobacco formula was introduced into threshing machine with five stages of threshing unit and eleven pneumatic separators. The results showed that the size proportion of tobacco strips separated from different pneumatic separators exhibited a similar change trend. Moreover, in the first and second stage threshing unit, the large and middle size particle content could reach more than 94% with good stability. Meanwhile, the characteristic size tobacco strips and the proportion of tobacco strips with size bigger than 44.5 mm …