Detection On Phthalates In White Spirit By Hplc,
2015
Faculty of Food Science and Engineering, Central South University of Forestry and Technology, Changsha, Hunan 410004, China
Detection On Phthalates In White Spirit By Hplc, Cai Yingxiang, Li Zhonghai, Fu Xiangjin, Zhang Hui, Li Jilie, Wang Shuyuan
Food and Machinery
A comprehensive analytical method based on high performance liquid chromatography (HPLC) was developed for measurement in foods of 6 phthalates-Dibutyl phthalate, Dioctyl Phthalate, Di-N-pentyl phthalate, Diethyl phthalate, Butyl benzyl phthalate, Diallyl phthalate. The extracts were analyzed by HPLC using an Inertsil C18 column. The two kind of organic mobile phases which are acetonitril and the methanol were compared. The acetonitril-water gradient elusion was found to be more advantageous. Under the optimal conditions, the calibration curves showed a good linearity (R2＞0.999 0) in the concentration ranged from 1.0～20.0 mg/L for 4 target compounds. Recoveries of 6 analyses at three spiked …
Indirect Determination Of Trace Iron (Ⅲ) Based On Fluorescence Quenching Of Fe (Ⅲ)—Ki—Rb System,
2015
ChongQing University of Science and Technology, Chongqing, 400050, China
Indirect Determination Of Trace Iron (Ⅲ) Based On Fluorescence Quenching Of Fe (Ⅲ)—Ki—Rb System, Dong Wenli, Xu Gang
Food and Machinery
This research is focused on the fluorescence properties and reaction conditions of Fe (Ⅲ)-KI-RB system. I3– is generated with Fe3 + reaction with excessive KI in hydrochloric acid solution, which can react with rhodamine B to form Ion complexes to lead to quenching of inherent fluorescence of rhodamine B.The results shows that excitation wavelength（λex）is 352 nm and emission wavelength（λem）is 580 nm.The fluorescence intensity decreased linearly with the iron(Ⅲ) concentration in the range of 0.02～4.50 μg/25 mL. The detection limit is 0.006 μg/25 mL. It is applied to the determination of trace iron(Ⅲ) in peanuts with satisfactory results,which …
Pistachio Sorting Model Research Using Impact Acoustics,
2015
School of Material and Mechanical Engineering, Beijing 100048, China
Pistachio Sorting Model Research Using Impact Acoustics, Zang Fuyao, Feng Tao, Wang Jing, Hu Junjie
Food and Machinery
Pistachio sorting technique research using impact acoustics is a method, which is to make pistachio vibrating and sounding when impacted, and get the connection between its signal features and structure characteristics through acoustics analyzing. Pistachio is considered as a nested ball , and analyses the whole process from the ground until the last moment of free vibration attenuation, and explains that the time domain and frequency domain characteristics of pistachio will perform different vibration characteristics based on the levels of opening. A new selecting method based on time-domain signal integrated logarithmic decrement is presented, and sorting effect is obvious.
Effect Of Temperature On Deterioration Site And Physiological Enzymes Activity During Wheat Storing,
2015
Henan University of Technology, Zhengzhou, Henan 450001, China
Effect Of Temperature On Deterioration Site And Physiological Enzymes Activity During Wheat Storing, Liu Weilong, Li Cuixiang, Wang Yuli, Hu Yuansen
Food and Machinery
The changes were discussed in wheart storage in the initial deterioration site and physiological enzymes activity. The variation of enzymes activity was detected in natural aging and artificial aging wheat by setting three temperature of 30 ℃, 40 ℃ and 50 ℃. And the embryo tissue was also observed by microscope to ensure the deterioration region of wheat. The results showed that the physiological deterioration began with the cap of radical, and then extend to the radical, at last reached the plumule. In the process of deterioration at different temperatures, the catalase activity gradually decreased and remains at a very …
Study On Hydrolysis Conditions Of Sipunculus Nudus By Response Surface Methodology,
2015
Guangxi Institute of Oceanology, Guangxi Key Laboratory of Marine Biotechnology, Beihai, Guangxi 536000, China
Study On Hydrolysis Conditions Of Sipunculus Nudus By Response Surface Methodology, Sun Xueping, Yang Jialin, Xu Yan, Liu Haijuan, Ren Yi
Food and Machinery
Using DH (degree of hydrolysis) as the main index, hydrolysis effects on Sipunculus nudus protein of seven proteases were compared. On the basis of single factor experiment, response surface methodology and Box-Behnken model were employed to establish the quadratic model for optimization the hydrolysis conditions. Results showed that the DH of Protamex was higher than those of others. The optimum hydrolysis conditions were as follows: the ratio of enzyme to substrate of 7.8%, hydrolysis time of 4 h and the hydrolysis temperature at 50 ℃. Under this condition, DH reached 24.81%. This study was aimed to provide theoretical basis for …
Review On Extraction Methods And Function Activity Of Blueberry Polyphenols,
2015
College of Food Science and Technology, Hunan Agricultural University, Changsha, Hunan 410128, China
Review On Extraction Methods And Function Activity Of Blueberry Polyphenols, Wu He, Wang Yuanliang, Zhao Lin, Liu Anran, Chen Chouwei
Food and Machinery
Blueberry polyphenols, as efficient bio-active substances, play an important role in anti-oxidation and subhealth improvement. Besides of conventional resolving extraction, methods of high efficiency and extraction rate also have been applied to it with the development of technology; functional studies also have gradually developed to the molecular and cellular level. For the purpose to offer an advisory opinion for further discuss, the research progresses of solvent, ultrasonic, enzymatic, microwave-assisted extraction process; and the ability of slowing down the occurrence of malignant diseases, improving sub-health state of human body of blueberry polyphenols are summarized in this passage.
Nutrient Value And Health-Care Functionof Xiang-Lotus And Its Development In Food Industry,
2015
College of Food Science and Technology, Hunan Agricultural University, Changsha, Hunan 410128, China
Nutrient Value And Health-Care Functionof Xiang-Lotus And Its Development In Food Industry, Wang Liangliang, Xia Yanbin, Ren Mei
Food and Machinery
Xiang-lotus is rich in nutrition with numerous health benefits and nutrition will be improvement after germination. This paper introduced the nutrient value and health care function of Xiang-lotus, development and utilization in food industry. It can provide a research reference for intensive processing and comprehensive utilization as well.
The Plight And Outlet Of The Management Of Food Enterprise,
2015
School of Business and Management, Inner Mongolia University of Finance and Economics, Hohhot, Inner Mongolia 010070, China
The Plight And Outlet Of The Management Of Food Enterprise, Liu Jiping
Food and Machinery
The management of food enterprise contains several problems, such as lacking of strict quality management system, consciously adding prohibited toxic chemicals, the lack of ability of crisis management, sale management and consumer demands. The causes of these problems are the consciousness of enterprise management personnel quality and safety management, the lack of basic occupation ethics, neglecting the interaction with consumers, and old-style of sales management. To solve the dilemma of food enterprises, some corresponding measures should be taking, including establishing the concept of "people-oriented", promoting the establishment of quality and safety management, the establishment of the third party quality safety …
An Analysis Of Bacterial Contamination Of Chicken Eggs And Antimicrobial Resistance,
2015
College of Saint Benedict/Saint John's University
An Analysis Of Bacterial Contamination Of Chicken Eggs And Antimicrobial Resistance, Holly Spitzer
Celebrating Scholarship & Creativity Day (2011-2017)
Chicken eggs are a major component of American diets, with an average yearly consumption of approximately 250 eggs per person (according to estimates made by the American Humane Society). While highly nutritious, eggs are also one of the leading causes of food poisoning and food borne illness in the United States. Eggs may become contaminated by a number of different types of bacteria during production, including Salmonella, a group of bacteria that, according to the CDC, causes more than 1.2 million cases of food borne illness in the United States every year. In an effort to decrease the frequency …
A Finite Element Method Based Microwave Heat Transfer Modeling Of Frozen Multi-Component Foods,
2015
University of Nebraska-Lincoln
A Finite Element Method Based Microwave Heat Transfer Modeling Of Frozen Multi-Component Foods, Krishnamoorthy Pitchai
Department of Food Science and Technology: Dissertations, Theses, and Student Research
Microwave heating is fast and convenient, but is highly non-uniform. Non-uniform heating in microwave cooking affects not only food quality but also food safety. Most food industries develop microwavable food products based on “cook-and-look” approach. This approach is time-consuming, labor intensive and expensive and may not result in optimal food product design that assures food safety and quality. Design of microwavable food can be realized through a simulation model which describes the physical mechanisms of microwave heating in mathematical expressions. The objective of this study was to develop a microwave heat transfer model to predict spatial and temporal profiles of …
The Gut Microbiota Of Rural Papua New Guineans: Composition, Diversity Patterns, And Ecological Processes,
2015
University of Alberta & University of Nebraska - Lincoln
The Gut Microbiota Of Rural Papua New Guineans: Composition, Diversity Patterns, And Ecological Processes, Ines Martinez, James C. Stegen, Maria X. Maldonado-Gomez, A. Murat Eren, Peter M. Siba, Andrew R. Greenhill, Jens Walter
Department of Food Science and Technology: Faculty Publications
Although recent research revealed an impact of westernization on diversity and composition of the human gut microbiota, the exact consequences on metacommunity characteristics are insufficiently understood, and the underlying ecological mechanisms have not been elucidated. Here, we have compared the fecal microbiota of adults from two non-industrialized regions in Papua New Guinea (PNG) with that of United States (US) residents. Papua New Guineans harbor communities with greater bacterial diversity, lower inter-individual variation, vastly different abundance profiles, and bacterial lineages undetectable in US residents. A quantification of the ecological processes that govern community assembly identified bacterial dispersal as the dominant process …
Bordeaux 2014 En Primeur Report,
2015
Technological University Dublin
Bordeaux 2014 En Primeur Report, Diarmuid Cawley
Reports
A guide report of the 2014 Bordeaux Wines tasted at En Primeur stage in early 2015.
Western Farmers’ Markets In Kathmandu: Vendor Perspectives,
2015
SIT Study Abroad
Western Farmers’ Markets In Kathmandu: Vendor Perspectives, Caroline Saunders
Independent Study Project (ISP) Collection
This study seeks to understand Western farmers’ markets (FMs) in Kathmandu by understanding vendors’ motivations for attending FMs; and further, their perspectives on the purpose and potential for expansion of FMs in Kathmandu’s food economy. In the US and Europe, FMs are often seen in the literature as a component of a social movement (SM) called the ‘alternative food movement’ (AFM) concerned with environmental sustainability and social justice within the processes of food production and consumption (Isenhour 2012). FMs, a type of direct market that offer face-to-face interaction between producers and consumers, are a site for the transmission of values …
Identification Of Meat Species In Pet Foods Using A Real-Time Polymerase Chain Reaction (Pcr) Assay,
2015
Chapman University
Identification Of Meat Species In Pet Foods Using A Real-Time Polymerase Chain Reaction (Pcr) Assay, Tara A. Okuma, Rosalee S. Hellberg
Food Science Faculty Articles and Research
Product mislabeling, adulteration, and substitution are increasing concerns in highly processed foods, including pet foods. Although regulations exist for pet foods, there is currently a lack of information on the prevalence of pet food mislabeling. The objective of this study was to perform a market survey of pet foods and pet treats marketed for domestic canines and felines to identify meat species present as well as any instances of mislabeling. Fifty-two commercial products were collected from online and retail sources. DNA was extracted from each product in duplicate and tested for the presence of eight meat species (bovine, caprine, ovine, …
A Comparison Of Nutrient Intake, Nutrient Adequacy, Diet Quality, And Obesity Prevalence In Low-Income Children (2-18 Yr) Based On Participation In The Supplemental Nutrition Assistance Program: Nhanes 2003-2010,
2015
Louisiana State University
A Comparison Of Nutrient Intake, Nutrient Adequacy, Diet Quality, And Obesity Prevalence In Low-Income Children (2-18 Yr) Based On Participation In The Supplemental Nutrition Assistance Program: Nhanes 2003-2010, Matthew J. Landry
Honors Capstones
No abstract provided.
Influence And Characterization Of Microbial Contaminants Associated With The Fda Bam Method Used To Detect Listeria Monocytogenes From Romaine Lettuce,
2015
Purdue University
Influence And Characterization Of Microbial Contaminants Associated With The Fda Bam Method Used To Detect Listeria Monocytogenes From Romaine Lettuce, Christopher E. Bach
Open Access Theses
Over the past few decades in the US, fresh produce commodities have become increasingly prevalent vehicles for the attribution of foodborne illness. Recent outbreaks of the bacterial foodborne pathogen Listeria monocytogenes linked to fresh produce highlight this immediate issue facing food safety. The most widely used method to screen L. monocytogenes from food matrices in the US is the Bacteriological Analytical Manual (BAM) developed by the Food and Drug Administration (FDA). Detection of this pathogen from all foods is primarily accomplished by using four FDA approved Listeria selective media: Oxford (OXA), modified Oxford (MOX), Lithium chloride-phenylethanol-moxalactam fortified with esculin and …
Effect Of Salts On The Structure-Function Relationships Of Sodium Kappa-Carrageenan,
2015
Purdue University
Effect Of Salts On The Structure-Function Relationships Of Sodium Kappa-Carrageenan, Lohit Myneedu
Open Access Theses
Carrageenans are sulfated marine polysaccharides used in a wide variety of food applications such as bodying, gelling, thickening and emulsion stabilization in water- and milk-based systems. They also find promising pharmaceutical usage due to antiinflammatory, anti-tumor and anti-coagulant activities, to name a few. Among them, kappa-carrageenan is favored owing to its desirable properties such as high gel strength and stability. Though the significance of cations on the structure-function relationships is well-documented, the role of anions is still elusive. This investigation aims at providing the pertinent details, especially in the presence of halide ions such as Cl-, Br- and I-. In …
Persistence And Internalization Of Listeria Monocytogenes In Romaine Lettuce, Lactuca Sativa Var. Longifolia,
2015
Purdue University
Persistence And Internalization Of Listeria Monocytogenes In Romaine Lettuce, Lactuca Sativa Var. Longifolia, Archana G. Shenoy
Open Access Theses
Listeria monocytogenes, has been implicated in a number of outbreaks involving fresh produce. While no L. monocytogenes outbreaks have been linked to romaine lettuce, the number of lettuce recalls specific to L. monocytogenes is increasing. Understanding the potential of persistence and internalization of L. monocytogenes on and within romaine lettuce will aid in determining food safety risk. Persistence of three L. monocytogenes strains on three romaine lettuce cultivars was assessed independently by inoculating seeds in 25 ml of 8 log CFU/ml for 30 minutes. Seeds were grown on two soil types (i.e. standard potting mix, Indiana top soil) or sterile …
The Bone-Protective Effect And Mechanism Of Soluble Corn Fiber,
2015
Purdue University
The Bone-Protective Effect And Mechanism Of Soluble Corn Fiber, Steven A. Jakeman
Open Access Theses
Postmenopausal women are at greatest risk among healthy individuals of developing osteoporosis and associated fractures. Nondigestible, fermentable dietary carbohydrates have been shown to improve calcium absorption in adolescents and bone-strength parameters in the rat model. Of particular interest is soluble corn fiber (SCF), which improved rat bone strength the most in a survey of novel fibers, and improved calcium absorption by up to 13% in teen girls. Hypotheses about the mechanism behind this effect revolve around the production of short-chain fatty acids (SCFAs) in the large intestine during fermentation. The purpose of this work was to determine if SCF would …
Micrornas Are Absorbed In Biologically Meaningful Amounts From Nutritionally Relevant Doses Of Cow’S Milk And Chicken Eggs And Affect Gene Expression In Peripheral Blood Mononuclear Cells, Cell Cultures, And Mouse Livers,
2015
University of Nebraska-Lincoln
Micrornas Are Absorbed In Biologically Meaningful Amounts From Nutritionally Relevant Doses Of Cow’S Milk And Chicken Eggs And Affect Gene Expression In Peripheral Blood Mononuclear Cells, Cell Cultures, And Mouse Livers, Scott Baier
Department of Nutrition and Health Sciences: Dissertations, Theses, and Student Research
Throughout the twenty-first century, evidence has been continually increasing to show the importance of epigenetic regulation in health. While the term “epigenetics” can be applied to many different processes, the focus of this dissertation will be on microRNAs and chromatin structure. Ultimately, both of these forms of epigenetic regulation can be used to fine tune gene expression based on environmental cues. The first three chapters of the dissertation focus on microRNA bioavailability, stability, and function from two commonly consumed food products: cow’s milk and chicken eggs. This important work has been the first of its kind to demonstrate the bioavailability …
