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2017

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Full-Text Articles in Food Science

Research And Practice Of Improving Students' Innovative Ability Of Food Discipline By Multidisciplinary Cross, Ma Haile Sep 2017

Research And Practice Of Improving Students' Innovative Ability Of Food Discipline By Multidisciplinary Cross, Ma Haile

Food and Machinery

It plays an important role in domestic and foreign higher education to use advantages of multi disciplines to cultivate students' innovation ability. Facing the problems existing in food science talent cultivation in our country, paying attention to the knowledge and neglect to cultivation of students' innovative ability, combining the characteristics of the food science, this review presented some research and practice of Jiangsu University in food science students' innovation ability training from food science crossing with engineering, physics and medicine.

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The Influence Of Thermal Treatment On Grass Carp Quality And Volatile Flavor Compounds, Chen Hui, Liu Yan, Li Zhipeng, Huang Lihui Sep 2017

The Influence Of Thermal Treatment On Grass Carp Quality And Volatile Flavor Compounds, Chen Hui, Liu Yan, Li Zhipeng, Huang Lihui

Food and Machinery

The changes of quality, protein composition and volatile flavor compounds of grass carp were studied at 60, 70, 80, 90 and 100 ℃, shape, texture, nutritional value and flavor were set as the evaluation indexes. The results showed that the weight loss rate of fish increased with the treatment temperature, and the L* value of fish increased, but the a* value decreased. The hardness, cohesion, amino acid content, E/N ratio showed an upward trend. 87 types of volatile compounds were detected by SPME-GC-MS, including 24 kinds of alkanes, 19 kinds of aldehydes, 14 kinds of acids, 12 kinds …

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Study On Isolation And Application Of Lactic Acid Bacteria Without Biogenic Amine Formation From Chinese Rice Wine, Xu Jianfen, Mao Jieqi, Wei Xiaolu, Liu Shuangping Sep 2017

Study On Isolation And Application Of Lactic Acid Bacteria Without Biogenic Amine Formation From Chinese Rice Wine, Xu Jianfen, Mao Jieqi, Wei Xiaolu, Liu Shuangping

Food and Machinery

In order to screen the strains without producing biogenic amines, some microorganisms were isolated from the fermentation mash and rice soaking water of Chinese rice wine. It was found that three strains had no amino acid decarboxylase activity, and had a certain ability of biogenic amines degradation. Moreover, the metabolic characteristics of the three strains were analyzed. The results showed that OD600 of the three strains reached a considerable level in the culture medium of 2.50%Vol. In the 8.80%Vol culture medium, strains 5-4 and 8-3 were inhibited whose OD600 was significantly lower than that of strain 14-2-1. In …

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Evaluation Of Textural Properties And Flavor Substances Of Three Varieties Of Fresh Lotus Root, Han Xiaomiao, Luo Qing, Wu Suxi Sep 2017

Evaluation Of Textural Properties And Flavor Substances Of Three Varieties Of Fresh Lotus Root, Han Xiaomiao, Luo Qing, Wu Suxi

Food and Machinery

Phy-chemical properties and flavor substances of the three varieties of Hubei lotus root were studied by electronic nose and GC-MS. The results showed that there were significant differences in the physical and chemical properties except the total fiber content among the three hybrid varieties, and texture properties of the hybrid variety NO.5 of lotus root were better than the hybrid varieties NO.3 and NO.4. Detection of flavor substances showed that 40 kinds of flavor substances were detected in NO.5, that 35 kinds of flavor substances were detected in NO.3, that 28 kinds of flavor substances were detected in NO.4. About …

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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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Efficacy Of Ultraviolet (Uv-C) Light In Reducing Foodborne Pathogens And Model Viruses In Skim Milk, Danielle M. Gunter-Ward, Ankit Patras, Manreet Singh Bhullar, Agnes Kilonzo-Nthenge, Bharat Pokharel, Michael Sasges Sep 2017

Efficacy Of Ultraviolet (Uv-C) Light In Reducing Foodborne Pathogens And Model Viruses In Skim Milk, Danielle M. Gunter-Ward, Ankit Patras, Manreet Singh Bhullar, Agnes Kilonzo-Nthenge, Bharat Pokharel, Michael Sasges

Agricultural and Environmental Sciences Faculty Research

The efficacy of low wavelength ultraviolet light (UV-C) as a disinfection process for a scattering fluid such as skim milk was investigated in this study. UV-C inactivation kinetics of two surrogate viruses (bacteriophages MS2 and T1UV) and three bacteria Escherichia coli ATCC 25922, S. Typhimurium ATCC 13311, Listeria monocytogenes ATCC 19115 in buffer and skim milk were investigated. UV-C irradiation was applied to stirred samples, using a collimated beam operating at 253.7 nm wavelength. A series of known UV-C doses (0–40 mJ·cm−2) were delivered to the samples except MS2 where higher doses (0–150 mJ·cm−2) were delivered. …

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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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Adapting To The Changing World Of Biotechnology: Syngenta Ag Mir162 Corn Litigation As Regulation By Litigation, Paul Goeringer Sep 2017

Adapting To The Changing World Of Biotechnology: Syngenta Ag Mir162 Corn Litigation As Regulation By Litigation, Paul Goeringer

Texas A&M Law Review

Agriculture has relied on plant breeding to improve genetics since the first domestication of agricultural plants 10,000 years ago. More recently, Gregor Mendel and his hybridization experiments on peas led to what we know as modern genetics. The rise in recombinantDNA technology has opened up many possibilities in plant breeding, including Roundup Ready technology and crop varieties designed to resist a number of pests. At the same time, governments and the private sector have sought to institute regulations for handling the releases of new biotechnology to ensure the technologies will have limited environmental impacts and provide safe foods to the …

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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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Seeds From Fresh Conventional Tomatoes Germinate Faster Than Dried Or Organic Seeds, Christopher G. Brown, Kautz Evan, Cameron Kilpatrick, Mary Vu, Mallory Weaver Sep 2017

Seeds From Fresh Conventional Tomatoes Germinate Faster Than Dried Or Organic Seeds, Christopher G. Brown, Kautz Evan, Cameron Kilpatrick, Mary Vu, Mallory Weaver

Georgia Journal of Science

Conventionally-grown and organically-grown tomato seeds sourced from both fresh tomatoes and store-bought packages were germinated for seven days to evaluate the effect of seed source on germination rates. Seeds from fresh Roma tomatoes were prepared by allowing them to ferment in their own pulp for 24 hours, while commercially packaged dry seeds did not require any preparation. Once prepared, the seeds were spaced evenly on wet paper towels and stored in resealable plastic bags in groups of 10 for a total sample size of 100 seeds in each of four treatments. The number of germinated seeds and the length of …

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Pituitary Genomic Expression Profiles Of Steers Are Altered By Grazing Of High Vs. Low Endophyte-Infected Tall Fescue Forages, Qing Li, Raquel Hegge, Phillip J. Bridges, James C. Matthews Sep 2017

Pituitary Genomic Expression Profiles Of Steers Are Altered By Grazing Of High Vs. Low Endophyte-Infected Tall Fescue Forages, Qing Li, Raquel Hegge, Phillip J. Bridges, James C. Matthews

Animal and Food Sciences Faculty Publications

Consumption of ergot alkaloid-containing tall fescue grass impairs several metabolic, vascular, growth, and reproductive processes in cattle, collectively producing a clinical condition known as “fescue toxicosis.” Despite the apparent association between pituitary function and these physiological parameters, including depressed serum prolactin; no reports describe the effect of fescue toxicosis on pituitary genomic expression profiles. To identify candidate regulatory mechanisms, we compared the global and selected targeted mRNA expression patterns of pituitaries collected from beef steers that had been randomly assigned to undergo summer-long grazing (89 to 105 d) of a high-toxic endophyte-infected tall fescue pasture (HE; 0.746 μg/g ergot alkaloids; …

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Development Of Starch-Polyvinyl Alcohol (Pva) Biodegradable Film: Effect Of Cross-Linking Agent And Antimicrobials On Film Characteristics, Aniket Satish More, Chandani Sen, Madhusweta Das Sep 2017

Development Of Starch-Polyvinyl Alcohol (Pva) Biodegradable Film: Effect Of Cross-Linking Agent And Antimicrobials On Film Characteristics, Aniket Satish More, Chandani Sen, Madhusweta Das

Journal of Applied Packaging Research

To satisfy the need of developing eco-friendly flexible antimicrobial packaging film with minimum use of synthetic chemical ingredients, the present study examined the efficacy of citric acid (CA) as cross-linking agent and essential oils (EOs), viz., cinnamon essential oil (CEO) and oregano essential oil (OEO) as natural antimicrobials in corn starch-polyvinyl alcohol (CS-PVA) film. Compared to film prepared from filmogenic solution (FS) containing 75 kg CS+8.75 kg PVA+24.6 kg glycerol per m3 FS, film additionally containing CA at 0.07 kg/kg CS indicated 95% higher ultimate tensile strength (UTS) and 27% lower water vapor permeability (WVP). Film developed with incorporation …

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Novel Spectral And Spatial Process Analytical Tools For Meat Quality And Safety Assessment, Yash Dixit Sep 2017

Novel Spectral And Spatial Process Analytical Tools For Meat Quality And Safety Assessment, Yash Dixit

Doctoral

Meat and meat products are highly nutritious, containing important levels of protein, vitamins, minerals and micronutrients, which are important for human growth and development. Beef has emerged as an important protein source in human diets. Minced beef is the primary ingredient for a variety of products such as burgers, meat balls, meat pastes, sausages and so on. Authenticity of the meat is a major requirement to meet the demands of consumers and assuring compliance with the government regulations and safety standards. Near-Infrared (NIR) spectroscopy and Hyperspectral Imaging (HSI) are sensing solutions which provide real time quality control and assurance. Laser …

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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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