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Articles 3931 - 3960 of 5782

Full-Text Articles in Food Processing

Study On Antibacterial Activity Of Phenyllactic Acid Combinedwith Food Preservatives, Ning Yawei, Yan Aihong, Wang Shijie, Wang Zhixin, Li Xingfeng, Zhu Hong, Jia Yingmin Sep 2017

Study On Antibacterial Activity Of Phenyllactic Acid Combinedwith Food Preservatives, Ning Yawei, Yan Aihong, Wang Shijie, Wang Zhixin, Li Xingfeng, Zhu Hong, Jia Yingmin

Food and Machinery

The antibacterial activity of phenyllactic acid (PLA) combined with food preservatives against foodborne pathogens Escherichia coli and Listeria monocytogenes was studied. The minimal inhibitory concentrations were determined by broth micro-dilution method and the interaction of PLA with food preservatives was determined using the checkerboard test. Furthermore, the synergistic effect of the optimized combination was evaluated through the time-kill assay. Results showed that PLA combined with nisin showed indifference effect against E. coli and additive effect against L. monocytogenes. The interaction of PLA and ethyl p-hydroxybenzoate showed an additive effect against E. coli and L. monocytogenes. PLA combined with EDTA-Na2 …

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Effects Of Controlled Freezing Point Technology Combined With The Modified Humidity Packaging On Preservation For Toona Sinensis, Yang Hui, Mao Weilin, Zhao Shouhuan, Zhao Hongyuan, Zhang Le, Shi Guanying, Wang Xiaomin, Wang Zhaogai Sep 2017

Effects Of Controlled Freezing Point Technology Combined With The Modified Humidity Packaging On Preservation For Toona Sinensis, Yang Hui, Mao Weilin, Zhao Shouhuan, Zhao Hongyuan, Zhang Le, Shi Guanying, Wang Xiaomin, Wang Zhaogai

Food and Machinery

Toona sinensis sprouts were packaged in 0.06 mm thick perforated PE bags and stored at －0.5 ℃(controlled freezing point) after pre-cooling at 4 ℃ for 12 h. In order to investigate the effects of controlled freezing point technology combined with the modified humidity packaging on preservation for Toona sinensis, the changes of weight losses rate, ascorbic acid, soluble protein, chlorophyll, total polyphenol, flavonoid, soluble sugar, malondialdehyde (MDA) content and polyphenol oxidase (PPO)activities were measured. The results indicated that the proper perforation area of PE bags stored at －0.5 ℃ was 141.3 mm2 (0.14% of total area), which decreased the …

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Oncurrent Situation And Developing Approaches Of Internationalization Of Food Science, Wu Dilong, Zhou Rui, Li Na, Wu Junhui, Xu Zhou Sep 2017

Oncurrent Situation And Developing Approaches Of Internationalization Of Food Science, Wu Dilong, Zhou Rui, Li Na, Wu Junhui, Xu Zhou

Food and Machinery

On the basis of the necessity and importance of educational internationalization in the discipline of food science, the paper probes into approaches to the internationalization for food science education in terms of construction of teaching staff, cultivationof talent, improvement of curriculum system, development of education resource, reform on teaching method, and construction of administration staff after analyzing the current situation of educational internationalization in the discipline of food science at home and abroad.

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Miller, Carl William (Fa 1063), Manuscripts & Folklife Archives Sep 2017

Miller, Carl William (Fa 1063), Manuscripts & Folklife Archives

Folklife Archives Finding Aids

Finding aid only for Folklife Archives Project 1063. Paper titled “Butchering and Rendering: Now and Then” in which Carl Miller describes the lengthy hog butchering process from slaughtering to wrapping and freezing. Paper is based on information collected by Miller from Buddy Crabtree, a butcher in Smiths Grove, Kentucky.

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The Gmo/Ge Debate, Joanna K. Sax Sep 2017

The Gmo/Ge Debate, Joanna K. Sax

Texas A&M Law Review

We live longer and healthier lives because advances in science create easier and better ways to sustain and survive. Society has an intricate relationship with biotechnology. Vaccines save lives. Fluoridated water decreases dental issues. Antibiotics treat bacterial infections. Nuclear power is a form of clean energy. With any emerging technology, the benefits do not exist in a vacuum, thus, negative consequences result as well. Our widespread uses of antibiotics are creating antibiotic-resistant strains of bacteria. Our research into nuclear energy also facilitated the creation of nuclear bombs. Perhaps it is human nature to use scientific advances for good and for …

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Recognizing Challenges And Opportunities In The Quest To End Hunger, Jennifer Williams Zwagerman Sep 2017

Recognizing Challenges And Opportunities In The Quest To End Hunger, Jennifer Williams Zwagerman

Texas A&M Law Review

As an attorney and professor that does not focus on intellectual property law, I was a bit apprehensive about providing a keynote address for a Symposium focusing on “Agriculture, Intellectual Property, and Feeding the World in the 21st Century.” As I thought about this topic, knowing that there were other speakers who would focus more on the IP issues and technical aspects of various topics, I kept coming back to the importance of technology as we worktowards the goal of feeding the world, and the many ways in which innovation plays a role in meeting that goal. It also brought …

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Young, Larry (Fa 1058), Manuscripts & Folklife Archives Sep 2017

Young, Larry (Fa 1058), Manuscripts & Folklife Archives

Folklife Archives Finding Aids

Finding aid only for Folklife Archives Project 1058. Paper titled “Hog Killing and Cutting Process” in which Larry Young discusses the process of slaughtering and butchering hogs on farms in Green County and Taylor County in Kentucky. He interviewed three men, one of whom was his father, about the process they used for processing pork on their farms and how they learned their techniques. The collection contains photos of the informants.

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Effect Of Ferulic Acid And Caffeic Acid On Acrylamide Formation And Elimination, Wu Haojie, Yu Miao, Huang Caihuan, Ou Shiyi Aug 2017

Effect Of Ferulic Acid And Caffeic Acid On Acrylamide Formation And Elimination, Wu Haojie, Yu Miao, Huang Caihuan, Ou Shiyi

Food and Machinery

In this study, caffeic and ferulic acids were used to test the effect on acrylamide formation and elimination in model reaction systems. In asparagine/glucose reaction system, addition of caffeic and ferulic acid at the concentration of 25 mmol/L and 250 mmol/L inhibited acrylamide formation. However, they increased acrylamide formation below 2.5 mmol/L. It was found that both of phenolic acids increased acrylamide elimination when ferulic acid or caffeic acid were heated with acrylamide, but the effect is not obvious, so effect of caffeic acid and ferulic acid influenced on acrylamide content in Maillard reaction system mainly influence on acrylamide formation …

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The Influence Of Purple Potato Starch On Bread Flour Rheology Properities And Gelatinization Characteristics, He Zhaowei, Liu Xiong, Zhao Tiantian, Shu Yuanfeng Aug 2017

The Influence Of Purple Potato Starch On Bread Flour Rheology Properities And Gelatinization Characteristics, He Zhaowei, Liu Xiong, Zhao Tiantian, Shu Yuanfeng

Food and Machinery

This study aimed at the effects of purple sweet potato powder (PSP) with different amounts (namely null, 5%, 10%,15% and 20%) on the rheological properties and pasting properties of dough tested by farinograph, extensograph, and rapid viscosity analyzer. The results showed that addition of PSP significantly influenced the properties of a dough. With the increase of PSP, the rheological properties and gelatinization properties of the dough were improved, which means PSP could lessen the gluten thews and inhibit the gelatinization and expansion process of wheat dough. However, the PSP could rise the bibulous rates, and reduce retrogradation value, which could …

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Effect Of High Pressure Homogenization And Colloid Mill Modification On The Physicochemical Properties Of Insoluble Dietary Fiber From Olive Pomace, Ding Shasha, Huang Lixin, Zhang Caihong, Xie Pujun, Deng Yejun, Wang Xiaojie Aug 2017

Effect Of High Pressure Homogenization And Colloid Mill Modification On The Physicochemical Properties Of Insoluble Dietary Fiber From Olive Pomace, Ding Shasha, Huang Lixin, Zhang Caihong, Xie Pujun, Deng Yejun, Wang Xiaojie

Food and Machinery

Olive pomace IDF were physical modified by high pressure homogenization (HPH) and colloid mill (CM) in this study. Moreover, the micromorphology, particle size distribution, functional groups, crystal structure and physico-chemical properties of IDF before and after the modification were analyzed. HPH group had looser morphology, more cavities and cracks, average particle size of 66.97 μm. CM group had looser morphology, more fracture, average particle size of 79.52 μm. HPH and CM modification didn’t affect IDF’s functional groups, crystal structure or crystallinity. HPH and CM groups similarly appeared characteristics absorption peaks of sugars similarly, both had celluloseⅠcrystal structure. Compared with unmodified …

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Effect Of Preparation Method On Physical And Chemical Properties Of Indica Rice Resistant Starch Of Type Rs3, Ouyang Mengyun, Wang Yan, Zhao Chuanwen Aug 2017

Effect Of Preparation Method On Physical And Chemical Properties Of Indica Rice Resistant Starch Of Type Rs3, Ouyang Mengyun, Wang Yan, Zhao Chuanwen

Food and Machinery

The indica starch pregelatinized by microwave as raw material, the effect of ultrasonic auxiliary-dual enzyme method and seed induced-dual enzyme method on the structure and physicochemical properties of indica rice resistant starch of type RS3 were researched in this study. The results showed that the structure of the raw starch was polyhedron, the edge of the surface was distinct, the crystal form was type A, and the crystallinity was only 8.9%. While the structure of RS3 were made by ultrasonic auxiliary-dual enzyme method and seed induced-dual enzyme method became rough and uneven, the solubility, swelling degree and water …

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The Strengthening Of Faint-Scent Cigarettes Style Characteristic, Yin Fei, Yu Jingyang, Zhang Xiaoming Aug 2017

The Strengthening Of Faint-Scent Cigarettes Style Characteristic, Yin Fei, Yu Jingyang, Zhang Xiaoming

Food and Machinery

In this paper, the brand of faint-scent cigarette was as the object. Firstly, the blank, cigarette added fragrances and end product cigarette were conducted sensory evaluation, respectively. The results showed that the cigarette added fragrances has a significantly increase in all aspects, approaching the end product cigarette. However, there is some defectiveness in faint-scent, potpourri and sweet and sour properties. Secondly, the analysis of volatile compounds of tobaccos from added fragrances and end product cigarettes were analyzed by GC-MS. And the results showed that 27 compositions were not detected in cigarettes added fragrances and most of these ingredients have floral …

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Breeding Of Low-Permeability Sensitive Mutant From Saccharomyces Cerevisiae, Ye Jing, Yue Xijie, Jiang Xuewei, Luo Xiaoming, Chen Daiwen, Wu Jian, Li Chiling Aug 2017

Breeding Of Low-Permeability Sensitive Mutant From Saccharomyces Cerevisiae, Ye Jing, Yue Xijie, Jiang Xuewei, Luo Xiaoming, Chen Daiwen, Wu Jian, Li Chiling

Food and Machinery

In order to improve the efficient secretion of intracellular product in Saccharomyces cerevisiae, wild diploid Y1 (2n) were mutagenized with UV treatment as original strain. To further identify, the degree of autolysis of each mutant strain was contrasted in low permeability condition by the test of its content of FDP, extra-cellular nucleic acids and proteins. The results showed: Hs5*（n）showed the highest degree of conditional autolysis in low permeability condition, the concentration of FDP in extracellular environment was 25.81 μg/mL. At the sixth hour in low permeability, its penetration rate of nucleic acid and protein in extracellular environment …

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Isolation And Identification Of Ginkolides-Producing Endophytic Fungi From Ginkgo Biloba Linn., Chen Xiaoming, He Fulin, Li Zhizhong, Yuan Zhihui Aug 2017

Isolation And Identification Of Ginkolides-Producing Endophytic Fungi From Ginkgo Biloba Linn., Chen Xiaoming, He Fulin, Li Zhizhong, Yuan Zhihui

Food and Machinery

In the present study, the method of tissue culturing was used to isolate the endophytic fungi from healthy ginkgo roots and stems. After repeated separation and purification, 116 Ginkgo endophytes were isolated. Metabolites of these fungi were preliminarily analyzed by high-performance liquid chromatography (HPLC), and a ginkgolide producing endophyte strain was finally screened out. The production of ginkgolides by this strain was more than 11.4 mg/L. The endophytic fungi strain was identified as Mucor spp. by morphology characteristics and phylogenetic analysis of internal transcribed spacer (ITS), and It was the first report in the ginkgolides producing endophytic fungus from Ginkgo …

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Study On The Inhibitory Effect Of Onion Peel Flavonoids On Adipocyte Production, Han Ying, Lin Mo, Liu Haoming, Xu Meina, Xu Hongyan, Li Guanhao Aug 2017

Study On The Inhibitory Effect Of Onion Peel Flavonoids On Adipocyte Production, Han Ying, Lin Mo, Liu Haoming, Xu Meina, Xu Hongyan, Li Guanhao

Food and Machinery

Extractions of flavonoid compounds in onion with ethanol, using the optimization factors of single factor and orthogonal design experiments, the flavonoids extraction rate of onion peel was 21.58%. The effect of quercetin on the differentiation of 3T3-L1 preadipocytes was best by separating the flavonoids from the liquid phase and acting on the 3T3-L1 preadipocytes. The expression of fat differentiation related gene FASmRNA was measured in 3T3-L1 adipocytes induced by flavonoid monomers of onion skin for eighth days. The results showed that the relative expression of FAS in 3T3-L1 preadipocytes induced by mRNA in quercetin group was significantly lower than that …

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Discrimination Of Anhua Dark Tea By Gas Chromatography-Time Of Flight Mass Spectrometry Combined With Chemometrics, Yan Hongfei, Peng Zhengguang, Li Rongjuan, Chen Lian, Wangmei Ling, Fu Shanliang, Dai Hua, Zhang Fan Aug 2017

Discrimination Of Anhua Dark Tea By Gas Chromatography-Time Of Flight Mass Spectrometry Combined With Chemometrics, Yan Hongfei, Peng Zhengguang, Li Rongjuan, Chen Lian, Wangmei Ling, Fu Shanliang, Dai Hua, Zhang Fan

Food and Machinery

The volatile components in Anhua and other dark teas were analyzed by headspace solid phase microextraction (HS-SPME) combined with gas chromatography-time of flight mass spectrometry (GC-TOF MS). About 41 volatile compounds were analyzed qualitatively and quantitatively. A classification model and predict the authenticity obtained from variance analysis, principal component analysis (PCA) and partial least squares discriminate analysis (PLSDA). In addition, the 26 compounds significant impacting on the classification were screened out from Anhua dark tea. The straight forward classification trend of Anhua dark tea and other samples was visualized through projection score plots obtained by PCA. Effective classification and identification …

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Simultaneous Determination Of Suifonamides And Quiniones Infish By Uplc-Q/Orbitrap Hrms, Yang Luqi, Li Rong, Gao Yongqing, Zhang Pengjie, Zhang Pengyun Aug 2017

Simultaneous Determination Of Suifonamides And Quiniones Infish By Uplc-Q/Orbitrap Hrms, Yang Luqi, Li Rong, Gao Yongqing, Zhang Pengjie, Zhang Pengyun

Food and Machinery

An Ultra-High Performance Liquid Chromatography-Quadrupole/Electrostatic Field Orbitrap High-resolution Mass Spectrometry method （UPLC-Q-Orbitrap HRMS）has been developed for the determinations of the drug residues of 21 SAs and 12 QNs in aquatic products.The sample was extracted by acetonitrile, cleaned up by acetonitrile saturated normal hexane and quantified in internal standard method.The results showed that 33 products presented a good linear relation in the range of 0.1～100 ng/mL. r2＞0.996. The limits for qualitative detection was 2 μg/kg. The average recoveries at three spike levels ranged were 54.3%～120.4%, with RSDs ranging 1.7%～11.9%. The developed method was easy operation high sensitivity, which can …

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Study On The Main Vibration Frequency Of The High Speed Double Side Labeling Machine Servo System For Automatic Jelly Food Production, Wang Zhencheng, Zheng Lu, Feng Xianmin, Zhao Yongjie Aug 2017

Study On The Main Vibration Frequency Of The High Speed Double Side Labeling Machine Servo System For Automatic Jelly Food Production, Wang Zhencheng, Zheng Lu, Feng Xianmin, Zhao Yongjie

Food and Machinery

The dynamic model of the servo system of the high speed and double side labeling machine for the whole automatic jelly food production was established. The equivalent moment of inertia and the equivalent stiffness of the servo system were obtained. The transfer function and the main vibration frequency of the servo system were obtained by means of the dynamic equation of the servo system. Through the root locus diagram and system vibration stability curve, the measures and methods were gotten to avoid or reduce the vibration principle to improve transmission system stiffness and cut work mechanism inertia and inertial components, …

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Optimization Of High Speed Variable Pitchtiming Screw Based On Artificial Bee Colony Algorithm, Li Quanlai Aug 2017

Optimization Of High Speed Variable Pitchtiming Screw Based On Artificial Bee Colony Algorithm, Li Quanlai

Food and Machinery

High speed variable pitch timing screw is an important foundation component of feeding system in packaging machinery. It is the throat of the whole equipment. In this paper, the artificial bee colony algorithm is employed to optimize the structure parameters of the screw, providing a basis for the design of maximum number of circles. The high speed variable pitch timing screw optimization model takes the minimum total length of the variable pitch screw helix as the optimization goal, with maximum number of helix circles as design variables, the plugging effect on the packaging container is kept, as well as the …

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Process Simulation And Performance Study Of Mechanical Vapor Recompression System, Li Wei, Hong Hongsheng, Zhu Manli, Sun Hongtao Aug 2017

Process Simulation And Performance Study Of Mechanical Vapor Recompression System, Li Wei, Hong Hongsheng, Zhu Manli, Sun Hongtao

Food and Machinery

Mechanical vapor recompression (MVR) system has been more and more popular because of its good energy-saving effect and small footprint, but how to make the stability and energy-saving of whole MVR evaporation system are better still need to further research on its performance. With the help of Aspen Plus software version, the MVR performance analysis model was set according to the operation principle of MVR to study the relationship between the amount of evaporation, the amount of fresh steam and feed temperature, evaporation pressure, and the relationship between evaporation and boiling temperature and feed concentration (NaCl mass fraction) and evaporation …

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Study On Eggshell Breakage Rate Of Egg Detection Mechanism Based On Fem, Wang Shuanqiao, Yu Zhihong Aug 2017

Study On Eggshell Breakage Rate Of Egg Detection Mechanism Based On Fem, Wang Shuanqiao, Yu Zhihong

Food and Machinery

In order to improve the detection efficiency of egg quality on-line detection mechanism, and reduce eggshell breakage rate in the detection because of mechanical vibration generated, the modal analysis of the detection mechanism key components of the double circular arc cylinder and frame was carried out, by using the finite element analysis software ANSYS, and then it was tested by experiment. The results showed that the vibration frequency of the detection mechanism, lower than 971.28 Hz, could not cause vibration of double circular drum group, and this helped to reduced the eggshell breakage rate. Moreover, the frame frequency was found …

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Simulation Analysis And Optimization Of Pulsed Electric Field Co-Field Sterilization Treatment Chambers, Gao Qingxue, Ping Xueliang Aug 2017

Simulation Analysis And Optimization Of Pulsed Electric Field Co-Field Sterilization Treatment Chambers, Gao Qingxue, Ping Xueliang

Food and Machinery

As an important part of the high-voltage pulsed electric field (Pulsed Electric Field, PEF) processing system, in order to develop a processing chamber unit suitable for use in combination with multiple processing chambers, we modeled the elliptical embedded type field sterilization processing chamber, and the electric field distribution and hydrodynamic characteristics of the chamber were obtained by ANSYS software. Furthermore, based on the simulation analysis, the structure of the processing chamber was optimized, and a new type of total field sterilization treatment chamber based on the optimization of fluid properties was proposed. It was proved that the performance of the …

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Structure Design And Finite Element Analysis Of Spiral Cutter For Bowl-Shaped Jellyfish, Wang Deqiang, Tao Xueheng, Wang Mingwei, Wang Xuejun, Lu Jinshi Aug 2017

Structure Design And Finite Element Analysis Of Spiral Cutter For Bowl-Shaped Jellyfish, Wang Deqiang, Tao Xueheng, Wang Mingwei, Wang Xuejun, Lu Jinshi

Food and Machinery

The spiral cutter is the most important working part of the bowl jellyfish automatic cutting machine. In order to ensure the stability of the work, the elastic deformation and the good service life are avoided. The mathematical model of the cutter blade line is established by using the differential geometry. The curvature and torsional size and the law of curvature and torsion with polar angle are simulated by MATLAB. The maximum value of the curvature is 1.57, the minimum is 0.012 47, the maximum torsion is 0.002 46, and the minimum is 0. The three - dimensional solid model of …

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Development And Application Of Energy-Saving Multiple-Silk Air Separation System, Zhu Guocheng, Wei Jiaxin, Guo Hongmin, Li Shufang, Cao Lihong, Fan Lei, Song Weimin Aug 2017

Development And Application Of Energy-Saving Multiple-Silk Air Separation System, Zhu Guocheng, Wei Jiaxin, Guo Hongmin, Li Shufang, Cao Lihong, Fan Lei, Song Weimin

Food and Machinery

In order to solve the existing problems of air separation equipment of high energy consumption, loss of moisture and temperature, circulating air was used to reduce energy consumption, moisture and temperature dissipation, and the energy-saving multiple-silk air separation system was developed. The system was composed of material uniform and dilution, first and second cycle the air separation systems, dust extraction pipe and other devices. Through uniform thinning of the material, both the side and vertical air entered and floated to improve wind effect, by the first and second cycle air separation systems. 90% of the circulated air were utilized to …

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Design And Research Of A New Type Of Vertical Home Flour Mill, Xie Mingzuo, Jia Ruiqing, Ma Fei, Song Tao, Zhou Dongxu Aug 2017

Design And Research Of A New Type Of Vertical Home Flour Mill, Xie Mingzuo, Jia Ruiqing, Ma Fei, Song Tao, Zhou Dongxu

Food and Machinery

A small low speed milling machine has been designed for household use. The device adopts vertical roller mill grinding, and is equipped with the outer cylinder rotation drive screw lift to achieve a uniform grinding mechanism which ensures the produced flour's nutrition structure intact. The function structure and working principle of the mill, the kinematics theory of the roller mill and the lifting mechanism are applied. A new structure of the whole machine as well as its key parts has been performed. The software EDEM has been used to carry out the simulation of the particle transport of flour, and …

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Preparation And Analysis Of Nisin-Loaded Chitosan-Starch Coated Paper, Liu Danqing, Lu Lixin, Fang Jiachang Aug 2017

Preparation And Analysis Of Nisin-Loaded Chitosan-Starch Coated Paper, Liu Danqing, Lu Lixin, Fang Jiachang

Food and Machinery

Objective To prepare a new kind of grease resistant -antibacterial paper using natural biological material as grease resistant and antibacterial agents, and to test its grease resistance and antibacterial properties. Methods Grease resistant-antibacterial paper was prepared by coating grease resistant antibacterial agent on paper. The grease resistance grade was tested by surface repellency test. The inhibition rate of coated paper on Escherichia coli and Staphylococcus aureus was calculated by colony method. Results When the ratio of 1 g/100 mL chitosan to 10 g/100 mL starch was 12, the grease resistance grade of coated paper reached 8, the cost was about …

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Beauty Of Simplicity: The Innovation Andapplication Of Traditional Culture Elements In Packaging Design, Wu Yuqing Aug 2017

Beauty Of Simplicity: The Innovation Andapplication Of Traditional Culture Elements In Packaging Design, Wu Yuqing

Food and Machinery

With the revival of traditional culture, the "beauty of simplicity" of traditional culture elements has become a trend of packaging design. This paper expounds the aesthetic significance of "beauty of simplicity", points out that "beauty of simplicity" is not simple and crude, but a beauty that comply with natural, showing the essence of things and its culture connotation in the form of natural beauty and implicit beauty; discusses how to discriminate，screen and extract traditional culture elements, puts forward the way that the innovation and application of traditional culture elements in the process of packaging design.

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Case Interpretation Of Humanized Packaging Design For Foods, Wang Xiaofang Aug 2017

Case Interpretation Of Humanized Packaging Design For Foods, Wang Xiaofang

Food and Machinery

It interprets the connotation and application of humanized design in food packaging. Based on profound analysis of 2015-2016′s World Star Packaging Awards works of foods, with environmental friendly and innovative services for the foundation, the deep research was done to application of humanized design concept. Humanized packaging design was the human-centered design, considering the human factors in the traditional design and affected by the emotion and culture of the consumers. Moreover, it satisfied all requirements of packaging design such as practical functions, artistic creativity, and green environmental protection. Humanization is an always important design consideration nowadays, even in the future.

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Establishment And Evaluation Of Shelf Life Model On Fresh Cut Hang Cabbage Processed By Ozone Water, Lei Hao, Xie Jing, Qiao Yongxiang Aug 2017

Establishment And Evaluation Of Shelf Life Model On Fresh Cut Hang Cabbage Processed By Ozone Water, Lei Hao, Xie Jing, Qiao Yongxiang

Food and Machinery

Fresh cut hang cabbage was cleaned by 1.8 mg/L ozone water for 5 min, and then stored under 0, 5, 10, 15 and 20 ℃ in thermostats, respectively. The total number of colonies, vitamin C and chlorophyll content index were measured, and combined with the Arrhenius equation to establish first order dynamic prediction model. The values of activation energy (EA) of shelf life model were 49.08, 54.87 and 38.8 kJ/mol respectively, referring to former factors A0 were 4.93×107, 1×109, 1.22×106. The indexes of 10 ℃ were used to validate the model …

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Effects Of Different Barrier Packaging Materials On Preservation Of Lettuce, Ma Yonghang, Liu Jianxin, Chen Xiangning, Yang Xiaofei Aug 2017

Effects Of Different Barrier Packaging Materials On Preservation Of Lettuce, Ma Yonghang, Liu Jianxin, Chen Xiangning, Yang Xiaofei

Food and Machinery

In order to investigate the effect of different barrier packaging materials on the preservation of harvested lettuce. Lettuces were encased in modified atmosphere packaging (MAP) with LDPE, PE, HDPE and EVOH/PE films and stored at 4℃, while the ones without packaging were used for comparison under the same conditions. During storage, the gas composition in packaging, sensory quality, weight loss, chlorophyll content and relative conductivity of lettuces were measured regularly. On the sixth day, lettuces in the control group lost the commodity value due to serious water loss. In the EVOH/PE group, O2 was running out and the CO …

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