Food Science Commons^™

Effect Of Microwave Drying Conditions On Volatile Oil Content In Zanthoxylum Schinifolium And Its Process Optimization, Peng Lin, Tian Bin, Wang Lin, Kan Jianquan, Chen Hourong

Food and Machinery

The Optimization of the microwave drying process was investigated using the response surface method in the “Jiuyeqing” Zanthoxylum schinifolium,with enzyme-inactivated by steam. The effects of microwave power, volume and intermittent microwave time on the content of volatile oil in microwave-dried Z. schinifolium were studied, and the suitable influence range was determined. On the basis of single factor experiment, the content of volatile oil was based on the Box-behnken Center combination test design principle, and the microwave drying regression model of it was established. The results showed that the optimal microwave drying parameters were as follows. The microwave power was 354.26 …

Research Progress Of Detection Technology And Degradation Dynamics Of Spirotetramat In Fruits And Vegetables, Ye Yufeng, Zhou Jie, Liu Yan, Ao Yan, Zhu Lisha, Zhang Jing, Jiao Bining

Food and Machinery

In order to get a comprehensive understanding of the residual level and metabolism of spirotetramat in fruits, vegetables and soils and reasonable evaluation of the medication safety, we discuss the research progress of the spirotetramat on its registration, limited standard, detection technology, degradation dynamics and residual status. Finally, the relative advises were put forward to solve the existing problems in the application of spirotetramat.

A Review Of The Development In Pretreatment Methods For Pcr Detection Of Food-Borne Pathogens, Bai Yalong, Suo Yujuan, Zhou Changyan

Food and Machinery

Molecular detection methods based on PCR (polymerase chain reaction) are widely used in the rapid detection of food-borne pathogens. However, in practical applications pretreatment method is also a critical step in rapid detection except the optimization of PCR. In this review, the pretreatment methods (including the centrifugation, membrane filtration, magnetic separation) for PCR detection of food-borne pathogens were systematically summeried. In particular, the magnetic separation was emphatically reviewed in the PCR detection of food-borne pathogens.

Application Of Radio Frequency Heating In Food Industry, Li Yulin, Jiao Yang, Wang Yifen

Food and Machinery

The radio frequency (RF) heating is a novel technology in food industry which has the advantages of fast and volumetric heating. The potential application of the radio frequency technology has been gradually developed in many fields including food drying, sterilization/pasteurization, dis-infestation, thawing and etc. However, there are still problems like non-uniform heating problem needs further research. It was reviewed the fundamentals, applications, and mathematical modeling techniques of radio frequency heating processes in this study, and the future research needs of it were also prospected.

Research Progress On Extraction Technology Of Active Components From Corn Bran, Zhao Erlao, Wang Minghua, Gao Ziyi, Zhao Sanhu

Food and Machinery

Corn bran was the major byproducts of corn processing, which contained a variety of functional and active components. Based on the literature learning method and summarization, the Chinese research progresses on the extraction technology of corn bran active components in recent ten years were reviewed in this article. The research prospect of the corn bran active components had also been presented, which provided a reference for its overall and further research and development.

Structure And Properties Of Acetylated Corn Starch Prepared Under Ultra High Pressure (Uhp), Pu Huayin, Ma Yun, Huang Meng, Xu Yao, Fan Fan, Liu Shuhan, Huang Junrong

Food and Machinery

The acetylated starches from corn were prepared under ultra high pressure (UHP) by acetic anhydride as reaction reagent, and NaCl as the reaction medium. The structure and properties of acetylated starches were analyzed by using light microscope, X-ray diffractometer and rapid viscosity analyzer. The results indicated that the granular acetylated starch showed a similar crystallite structure as that of native starch. In addition, the acetylated starches were gelatinized when treated at 600 MPa and the structure of starch granules was gradually destroyed, whereas the crystal structure was transformed from the A-type crystallite to the V-type crystallite. However the gelatinization negatively …

The Analysis And Evaluation Of Nutrients Of Sansui’S Characteristic Sheldrake Duck Eggs, Shen Changxuan, Wang Xiujun, Huang Shan

Food and Machinery

The eggs of Sansui’s characteristic sheldrake duck were researched to enrich its foundation and deepen the objective evaluation. Moisture content, crude protein content, amino acid composition and its content, crude fat content, composition and content of fatty acids, cholesterol content and the content of calcium, zinc, magnesium, iron, copper, manganese, lead and selenium of 3 kinds of egg samples in Guizhou were determined by the methods of China national standard, chromatography of gases, Inductively coupled plasma atomic emission spectrometry and spectrofluorimetry. Amino acid and fatty acids were scientifically evaluated by the method WHO/FAO Amino Acid Scoring Model, the chemical score …

Study On Impact Characteristics Of Rubber Seeds, Li Zihao, Wang Tao

Food and Machinery

It is an important method to break rubber seeds with the principle of collision. In order to study the breaking mechanics of rubber seeds in the collision process, the instantaneous impact force of rubber seeds was measured by RFP data acquisition system. In this experiment, single factor method was adopted to select the height, angle and initial velocity factors to analyze the influence of various factors on the impact force of rubber seeds. The experimental results showed that (the perspective of the range is 0° to 90°) : When height increased from 0.5 m to 2.0 m, the collision force …

Effects Of 60Co Γ Ray Irradiation On Sterilization And Quality Of Sauced Chicken Claw, Peng Ling, Xu Yuanfang, Zhang Qiling, Zhou Yiji, Mao Qingxiu, Li Wenge

Food and Machinery

The effects of the ⁶⁰Co γ ray irradiation preservation on the sauced chicken claw were investigated by using different irradiation doses. The relationship was analyzed between the irradiation dose and the total bacterial count, nutrients, the composition of amino acids and fatty acids, AC, POV, TVB-N, nitrite as well as chroma. The results showed that the ⁶⁰Co γ ray irradiation was effective on sterilization, and while the sample was irradiated at the dose of 4.09 kGy, with the total bacterial count reduced to no more than 4.09 kGy. However, no significant effect of the ⁶⁰Co γ ray …

Optimization On Mixed Fermentation Process With Brown Rice Ferment, Zhang Xupu, Bai Junyan, Liu Tengyun, Wu Rongrong, Cheng Shumei

Food and Machinery

The mixed fermentation process of enzymatic brown rice was optimized by the response surface method. In order to optimize the growth of Saccharomyces cerevisiae and Lactobacillus plantarum in short-term mixed fermented brown rice, the fermentation medium components of the traditional brown rice enzyme were optimized and the interaction between the constituent components was analyzed. Firstly, the main factors were analyzed by pre-experiemntal. The vital influencing factors of biomass, such as honey, brown rice and NaCl, were determined by Plackett-Burman test. The direction and step size of the steepest climbing test are set according to the three important factors effect intensity. …

Inhibition Of Growth And Ammonia Production Of Ruminal Hyper Ammonia-Producing Bacteria By Chinook Or Galena Hops After Long-Term Storage, Michael D. Flythe, Brittany E. Harlow, Glen E. Aiken, Gloria L. Gellin, Isabelle A. Kagan, Jesse Pappas

Animal and Food Sciences Faculty Publications

Surplus hops (Humulus lupulus L.) that are not needed by the brewing industry could be used as a feed supplement for cattle and other ruminants. Previous research indicates that antimicrobial hops plant secondary metabolites (i.e., α- and β-acids) inhibit methane and ammonia production and promote the growth of ruminant animals. The goal was to determine that hop pellets produced for brewing still possessed the requisite antimicrobial activity after 5-year storage. HPLC (high performance liquid chromatography) analysis indicated that the α- and β-acid concentrations in two varieties of hops were relatively stable after 5 years of storage under N_{2 …}

A Gut Pathobiont Synergizes With The Microbiota To Instigate Inflammatory Disease Marked By Immunoreactivity Against Other Symbionts But Not Itself, João Carlos Gomes-Neto, Hatem Kittana, Sara Mantz, Rafael R. Segura Munoz, Robert J. Schmaltz, Laure B. Bindels, Jennifer L. Clarke, Jesse M. Hostetter, Andrew K. Benson, Jens Walter, Amanda Ramer-Tait

Department of Food Science and Technology: Faculty Publications

Inflammatory bowel diseases (IBD) are likely driven by aberrant immune responses directed against the resident microbiota. Although IBD is commonly associated with a dysbiotic microbiota enriched in putative pathobionts, the etiological agents of IBD remain unknown. Using a pathobiont-induced intestinal inflammation model and a defined bacterial community, we provide new insights into the immune-microbiota interactions during disease. In this model system, the pathobiont Helicobacter bilis instigates disease following sub-pathological dextran sulfate sodium treatment. We show that H. bilis causes mild inflammation in mono-associated mice, but severe disease in the presence of a microbiota, demonstrating synergy between the pathobiont and microbiota …

Beverly Cross, Beverly Cross, Institute Of Child Nutrition. Child Nutrition Archives.

Oral History Project (all interviews)

One of the first hires for the new National Food Service Management Institute/Institute of Child Nutrition, Beverly Cross spent more than a quarter of a century working for the Institute. Here she shares her reflections as she prepares for her retirement in December 2017.

Four Legs Good, Two Legs Bad: How Slaughterhouse Safety Hasn’T Kept Up With The Times, Emily Ziemski

Capstones

From legal loopholes and outdated rules to undetectable infections and understaffing, the United States Department of Agriculture may not be doing all it can to make sure the American public’s health isn't at risk. As the people of the United States consume over 500 million pounds of beef a year, food safety policy and slaughterhouses are falling behind in proper procedural measurements in the beef industry.

emziemski.com/capstone

Mutu Buah Sawo Selama Periode Simpan Berbeda, Kusumiyati, Farida, Wawan Sutari, Syariful Mubarok

Jurnal Kultivasi

Buah sawo adalah salah satu buah tropik yang dipanen sebelum matang fisiologis, sehingga membutuhkan masa penyimpanan. Proses penyimpanan dilakukan saat proses distribusi. Selama masa penyimpanan terjadi perubahan mutu buah. Tujuan penelitian ini adalah untuk mengetahui perubahan mutu buah sawo yang terjadi selama masa simpan terhadap kekerasan buah, kadar air dan total padatan terlarut (TPT). Penelitian ini dilaksanakan pada Maret sampai Juli 2017 di Laboratorium Tekno-logi Produksi Tanaman Divisi Hortikultura Fakultas Pertanian Universitas Padjadjaran, Jatinangor. Metode yang digunakan adalah Rancangan Acak Lengkap (RAL) dengan 3 perlakuan dan 6 ulangan. Perlakuan yang diberikan adalah penyimpanan 0 hari (P0), penyimpanan 5 hari (P5) …

General Survey Of Fructus Psoraleae From The Different Origins And Chemical Identification Of The Roasted From Raw Fructus Psoraleae, Junjun Yang, Jing Yang, Jie Du, Benjamin Feng, Xin Chai, Mingming Xiao, Yuefei Wang, Xiumei Gao

Peer Reviewed Articles

Fructus Psoraleae, a traditional Chinese medicine, is widely used for preventing and treating various diseases such as vitiligo, osteoporosis and psoriasis. Coumarin, such as psoralenoside, isopsoralenoside, psoralen and isopsoralen, are important compounds in Fructus Psoraleae. In our study, ultra performance liquid chromatography coupled with diode array detector was employed for an excellent method validation for simultaneous quantification of psoralenoside, isopsoralenoside, psoralen and isopsoralen, which was further applied in performing general survey of Fructus Psoraleae from the different origins and chemical identification of the roasted from raw Fructus Psoraleae in the light of illuminating the transformed rule of psoralenoside and isopsoralenoside. …

Effects Of Pre-Chiller Temperature On The Microbial Ecology Of Whole Bird Carcass Rinses, Rachael Elizabeth Blevins

Graduate Theses and Dissertations

Upon entering a poultry processing facility, birds are already contaminated with a variety of microorganisms. It is the responsibility of the processor to reduce these numbers to deliver a wholesome product to customers. This is not an easy task as there are ample opportunities for further microbial contamination. Some of these opportunities are obvious. For example, any areas where contaminants could be washed off one bird and onto another are always an area for concern, i.e. the scalder or the chiller. There are numerous opportunities for contamination that are not so obvious. These incidents of contamination are not necessarily due …

Development And Characterization Of Rice Genotypes For Water Use Efficiency And Drought Resistance, Anuj Kumar

Graduate Theses and Dissertations

Rice, the second largest staple food crop, uses 30% of global fresh water to complete its life cycle worldwide. Water deficits worldwide have become a serious problem affecting rice growth and ultimately grain yield. To solve the water problem globally, improvement of water use efficiency (WUE) and other drought resistance (DR) traits in rice genotypes would be a useful strategy using advanced genomics tools. In this study, our objectives were to 1) analyze phenotypes of the USDA rice mini-core collection (URMC) for WUE and DR related traits, 2) correlate drought response phenes for physiological traits and grain yield in the …

Evaluation Of The Impact Of Tart Cherries Polyphenols On The Human Gut Microbiota And Phenolic Metabolites In Vitro And In Vivo, Alba Claudia Mayta-Apaza

Graduate Theses and Dissertations

Tart cherries are polyphenol abundant stone fruits claimed to exert health benefits further of its nutritional properties. The abundant phytochemicals content in tart cherries also referred as dietary polyphenols have been considered as an effective natural antioxidant when added in daily diet. However, it has been hypothesized the intervention of gut microbiota on the overall functionality of such compounds. This thesis contains a wide-ranging literature review focused on tart cherry as a crop, current market, functional food, and several health benefits. Furthermore, the research done describes and in vitro and in vivo assays of a short-term dietary intervention of tart …

Radiofrequency Processing For Inactivation Of Salmonella Spp. And Enterococcus Faecium Nrrl B-2354 In Whole Black Peppercorn And Ground Black Pepper, Xinyao Wei

Department of Food Science and Technology: Dissertations, Theses, and Student Research

Black pepper has been implicated in several foodborne illness outbreaks and food product recalls due to Salmonella contamination. Conventional decontamination methods for black pepper are challenged by harmful residues or quality deterioration. Radiofrequency (RF) heating reduces the come-up time which allows to design a high-temperature short-time processing to inactivate Salmonella with minimal deterioration in product quality. The objectives of this study were to investigate RF heating for inactivation of Salmonella in whole black peppercorn and ground black pepper samples, evaluate Enterococcus faecium NRRL B-2354 as a surrogate for Salmonella, and assess quality deterioration during RF heating of whole black peppercorn …