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METHODS for DEVELOPING NEW FOOD PRODUCTS an Instructional Guide
METHODS for DEVELOPING NEW FOOD PRODUCTS An Instructional Guide ADI RAMOUNI, Ph.D. F AProfessor of Food Science Kansas State University ATHRYN ESCHENES, M.S. K Food Science,D Deschenes Consulting, LLC HOW T O O DR ER THIS OB OK BY PHONE: 78 7 005- - 7334 or 717 - -092 1 066 , 9 AM –5 PM Easte nr Time BY F XA : 17 7 905- - 016 0 BY M IA L: Ord re Dep ra tm ne t DEStech Pu ilb cat noi ,s I nc. 34 9 oN r ht uD ke St er et aL n ac ts er, PA 1 2067 , U .S. A. BY RC EDIT AC RD: Am ire c na Ex erp ss, VISA, Mast re C dra , D si cover BY WW W IS ET : h tt p :// www .destec ph ub .com Preface HE ideas in this text include and yet transcend the concepts nor- Tmally offered in food science courses. They speak to practical and business issues, such as food marketing, product feasibility and industry expectations for oral and written communication. Much of the applied technology covered herein is derived from consultation with experts in areas such as these. While the book aspires to provide a review and overview of information required by a well-informed specialist in the food industry, no single volume can cover everything. Hence, the book is a stepping-stone and guide for the readers’ own work and research. The content and organization of this book were originally developed and delivered for a capstone course at Kansas State University. -
Research Article Gene Knockout Identification Using an Extension of Bees Hill Flux Balance Analysis
Hindawi Publishing Corporation BioMed Research International Volume 2015, Article ID 124537, 10 pages http://dx.doi.org/10.1155/2015/124537 Research Article Gene Knockout Identification Using an Extension of Bees Hill Flux Balance Analysis Yee Wen Choon,1 Mohd Saberi Mohamad,1 Safaai Deris,1 Chuii Khim Chong,1 Sigeru Omatu,2 and Juan Manuel Corchado3 1 Artificial Intelligence and Bioinformatics Research Group, Faculty of Computing, Universiti Teknologi Malaysia, 81310 Skudai, Johor, Malaysia 2 Department of Electronics, Information and Communication Engineering, Osaka Institute of Technology, Osaka 535-8585, Japan 3 Biomedical Research Institute of Salamanca/BISITE Research Group, University of Salamanca, 37008 Salamanca, Spain Correspondence should be addressed to Mohd Saberi Mohamad; [email protected] Received 21 August 2014; Revised 22 October 2014; Accepted 31 October 2014 Academic Editor: Juan F. De Paz Copyright © 2015 Yee Wen Choon et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. Microbial strain optimisation for the overproduction of a desired phenotype has been a popular topic in recent years. Gene knockout is a genetic engineering technique that can modify the metabolism of microbial cells to obtain desirable phenotypes. Optimisation algorithms have been developed to identify the effects of gene knockout. However, the complexities of metabolic networks have made the process of identifying the effects of genetic modification on desirable phenotypes challenging. Furthermore, a vast number of reactions in cellular metabolism often lead to a combinatorial problem in obtaining optimal gene knockout. -
Gene Editing of Microalgae: Scientific Progress and Regulatory
biology Review Gene Editing of Microalgae: Scientific Progress and Regulatory Challenges in Europe Andrew Spicer 1,* and Attila Molnar 2 ID 1 Algenuity, Eden Laboratory, Bedfordshire MK43 9ND, UK 2 Institute of Molecular Plant Sciences, University of Edinburgh, Edinburgh EH9 3BF, UK; [email protected] * Correspondence: [email protected]; Tel.: +44-1234-765773 Received: 22 December 2017; Accepted: 1 March 2018; Published: 6 March 2018 Abstract: It is abundantly clear that the development of gene editing technologies, represents a potentially powerful force for good with regard to human and animal health and addressing the challenges we continue to face in a growing global population. This now includes the development of approaches to modify microalgal strains for potential improvements in productivity, robustness, harvestability, processability, nutritional composition, and application. The rapid emergence and ongoing developments in this area demand a timely review and revision of the current definitions and regulations around genetically modified organisms (GMOs), particularly within Europe. Current practices within the EU provide exemptions from the GMO directives for organisms, including crop plants and micro-organisms that are produced through chemical or UV/radiation mutagenesis. However, organisms generated through gene editing, including microalgae, where only genetic changes in native genes are made, remain currently under the GMO umbrella; they are, as such, excluded from practical and commercial opportunities in the EU. In this review, we will review the advances that are being made in the area of gene editing in microalgae and the impact of regulation on commercial advances in this area with consideration to the current regulatory framework as it relates to GMOs including GM microalgae in Europe. -
What Are Knockout Mice?
Lecture 37 Knockout mice Lecture 29 Cloning and Expression vectors Lecture 30 Eukaryotic Protein Expression Systems –I Lecture 31 Eukaryotic Protein Expression Systems –II Lecture 32 Eukaryotic Protein Expression Systems –III Lecture 33 Human Gene Therapy Lecture 34 DNA Vaccines Lecture 35 Transgenic Animals Lecture 36 Transgenic Plants Lecture 37 Knockout Mice What are knockout mice? A knockout mouse is a mouse in which a specific gene has been inactivated or “knocked out” by replacing it or disrupting it with an artificial piece of DNA. The loss of gene activity often causes changes in a mouse's phenotype and thus provides valuable information on the function of the gene. Researchers who developed the technology for the creation of knockout mice won Nobel Prize in the year 2007 The Nobel Prize in Physiology or Medicine 2007 was awarded jointly to Mario R. Capecchi, Sir Martin J. Evans and Oliver Smithies "for their discoveries of principles for introducing specific gene modifications in mice by the use of embryonic stem cells". Mario R. Capecchi Sir Martin J. Evans Oliver Smithies The ability to delete or mutate any gene of interest in mice has transformed the landscape of mammalian biology research. Cultivation of embryonic stem (ES) cells – Martin Evans • Gene targeting – Oliver Smithies • Gene knockout – Mario Capecchi Gene correction by Oliver Smithies Targeted correction of a mutant HPRT gene in mouse ES cells. Nature 330:576-8, 1987 This modification of a chosen gene in pluripotent ES cells demonstrates the feasibility of this route to manipulating mammalian genomes in predetermined ways. -------------------------------------------------------------------------------------- Nature. 1985 Sep 19-25;317(6034):230-4. -
Step-By-Step Knockout (Dsdna) Protocol.Pdf
Court Lab Protocol 3/21/11 Recombineering: Using Drug Cassettes to Knock out Genes in vivo James A. Sawitzke1, Lynn C. Thomason2, Mikhail Bubunenko1,2, Xintian Li1, Nina Costantino1, and Donald L. Court1 1Molecular Control and Genetics Section, Gene Regulation and Chromosome Biology Laboratory, Center for Cancer Research, National Cancer Institute at Frederick, Frederick, MD 21702 2Gene Regulation and Chromosome Biology Laboratory, Basic Science Program, SAIC-Frederick, Inc., National Cancer Institute at Frederick, Frederick, MD 21702 Purpose A “gene knockout” or “knockout” is a mutation that inactivates a gene function. These mutations are very useful for classical genetic studies as well as for modern techniques including functional genomics. In the past, knockouts of bacterial genes were often made by transposon mutagenesis. In this case, laborious screens are required to find a knockout in the gene of interest. Knockouts of other organisms have traditionally been made by first using in vitro genetic engineering to modify genes contained on plasmids or Bacterial Artificial Chromosomes (BACs) and later moving these modified constructs to the organism of interest by cell culture techniques. Other methods utilizing a combination of genetic engineering and in vivo homologous recombination were inefficient at best. Recombineering provides a new way to generate knockout mutations directly on the bacterial chromosome or to modify any plasmid or BAC in vivo as a prelude to making knockouts in other organisms. The constructs are designed to the base pair and are not dependent on suitable restriction sites. A drug cassette can be placed anywhere within a gene or the open reading of the gene can be replaced with the drug cassette. -
Generation of Mouse Conditional Knockout Alleles in One Step Using the I-GONAD Method
Downloaded from genome.cshlp.org on September 29, 2021 - Published by Cold Spring Harbor Laboratory Press Method Generation of mouse conditional knockout alleles in one step using the i-GONAD method Renjie Shang,1,2 Haifeng Zhang,1 and Pengpeng Bi1,2 1Center for Molecular Medicine, University of Georgia, Athens, Georgia 30602, USA; 2Department of Genetics, University of Georgia, Athens, Georgia 30602, USA The Cre/loxP system is a powerful tool for gene function study in vivo. Regulated expression of Cre recombinase mediates precise deletion of genetic elements in a spatially– and temporally–controlled manner. Despite the robustness of this system, it requires a great amount of effort to create a conditional knockout model for each individual gene of interest where two loxP sites must be simultaneously inserted in cis. The current undertaking involves labor-intensive embryonic stem (ES) cell– based gene targeting and tedious micromanipulations of mouse embryos. The complexity of this workflow poses formida- ble technical challenges, thus limiting wider applications of conditional genetics. Here, we report an alternative approach to generate mouse loxP alleles by integrating a unique design of CRISPR donor with the new oviduct electroporation technique i-GONAD. Showing the potential and simplicity of this method, we created floxed alleles for five genes in one attempt with relatively low costs and a minimal equipment setup. In addition to the conditional alleles, constitutive knockout alleles were also obtained as byproducts of these experiments. Therefore, the wider applications of i-GONAD may promote gene func- tion studies using novel murine models. [Supplemental material is available for this article.] Our understanding of the genetic mechanisms of human diseases strains are readily available, generation of the loxP-flanked (floxed) has been largely expanded by loss-of-function studies using engi- alleles is challenging and labor-intensive due to the lack of an effi- neered mouse models. -
Food Marketing and Labeling
FOOD MARKETING AND LABELING BACKGROUND READING 10 “Advertising, new products, and larger portions all contribute to a food environment that promotes eating more, not less.”1 - Marion Nestle, Food Politics: How the industry influences nutrition and health Essential questions • To what degree are food choices made by individuals, versus made by others on their behalf? • How can marketing and labeling affect food choices? How can they make food choices more or less informed? • Why and how do food companies market their products? • How should food marketing be regulated, if at all? Should food companies be allowed to market products to children and in schools? Introduction Americans suffer from an epidemic of diet-related illnesses that stem, in part, from overeating.2 The amount of calories provided by the U.S. food supply,3 as well as the amount consumed,4 have both risen over recent decades. Most of this increase has been in the form of refined grains, added fats and added sugars.5 What has led to these changes in American diets? There are many influences on what people eat, ranging from personal taste preferences to the cost and availability of food in a community (refer to Diet and Influences on Food Choice and Food Environments). This module focuses on the effects of food marketing and labeling on what people eat. In 1999, U.S. food companies spent an estimated $33 billion on marketing.1 In food environments saturated with enticing new products, captivating advertisements and increasing portion sizes, some nutritionists see it as no surprise that Americans struggle with moderation.1 This raises questions of how much control people have over their food choices: To what degree are those choices driven by individual needs, versus driven by effective marketing campaigns? Children, in particular, may be particularly susceptible to the effects of marketing.6 Food labels, such as nutrition information and USDA Organic labels, may help consumers make more informed purchases that align with their values and nutritional needs. -
Prospects of Gene Knockouts in the Functional Study of MAMP-Triggered Immunity: a Review
International Journal of Molecular Sciences Review Prospects of Gene Knockouts in the Functional Study of MAMP-Triggered Immunity: A Review Benedict C. Offor , Ian A. Dubery and Lizelle A. Piater * Department of Biochemistry, University of Johannesburg, Auckland Park 2006, South Africa; benedictoff[email protected] (B.C.O.); [email protected] (I.A.D.) * Correspondence: [email protected]; Tel.: +27-11-559-2403 Received: 5 March 2020; Accepted: 1 April 2020; Published: 6 April 2020 Abstract: Plants depend on both preformed and inducible defence responses to defend themselves against biotic stresses stemming from pathogen attacks. In this regard, plants perceive pathogenic threats from the environment through pattern recognition receptors (PRRs) that recognise microbe-associated molecular patterns (MAMPs), and so induce plant defence responses against invading pathogens. Close to thirty PRR proteins have been identified in plants, however, the molecular mechanisms underlying MAMP perception by these receptors/receptor complexes are not fully understood. As such, knockout (KO) of genes that code for PRRs and co-receptors/defence-associated proteins is a valuable tool to study plant immunity. The loss of gene activity often causes changes in the phenotype of the model plant, allowing in vivo studies of gene function and associated biological mechanisms. Here, we review the functions of selected PRRs, brassinosteroid insensitive 1 (BRI1) associated receptor kinase 1 (BAK1) and other associated defence proteins that have been identified in plants, and also outline KO lines generated by T-DNA insertional mutagenesis as well as the effect on MAMP perception—and triggered immunity (MTI). In addition, we further review the role of membrane raft domains in flg22-induced MTI in Arabidopsis, due to the vital role in the activation of several proteins that are part of the membrane raft domain theory in this regard. -
Economics of Food Labeling
Economics of Food Labeling. By Elise Golan, Fred Kuchler, and Lorraine Mitchell with contributions from Cathy Greene and Amber Jessup. Economic Research Service, U.S. Department of Agriculture. Agricultural Economic Report No. 793. Abstract Federal intervention in food labeling is often proposed with the aim of achieving a social goal such as improving human health and safety, mitigating environmental hazards, averting international trade disputes, or supporting domestic agricultural and food manufacturing industries. Economic theory suggests, however, that mandatory food-labeling requirements are best suited to alleviating problems of asymmetric information and are rarely effective in redressing environmental or other spillovers associated with food production and consumption. Theory also suggests that the appropriate role for government in labeling depends on the type of information involved and the level and distribution of the costs and benefits of providing that information. This report traces the economic theory behind food labeling and presents three case studies in which the government has intervened in labeling and two examples in which government intervention has been proposed. Keywords: labeling, information policy, Nutrition Labeling and Education Act, dolphin-safe tuna, national organic standards, country-of-origin labels, biotech food labeling Acknowledgments We wish to thank Lorna Aldrich, Pauline Ippolito, Clark Nardinelli, Donna Roberts, and Laurian Unnevehr for their comments on earlier drafts of this paper. We appreciate the guidance provided by Nicole Ballenger, Mary Bohman, Margriet Caswell, Steve Crutchfield, Carol Jones, Kitty Smith, and John Snyder. We thank Tom McDonald for providing his editorial expertise. Elise Golan and Fred Kuchler are economists in the Food and Rural Economics Division, ERS. -
FOOD FIGHT! Product Development in the Science Classroom
FOOD FIGHT! Product Development in the Science Classroom Authors: Amy Rowley Jeremy Peacock NSF Graduate Teaching Fellows Department of Food Science and Technology The University of Georgia Athens, Georgia June 2005 FOOD FIGHT! was developed as part of The Science Behind Our Food NSF GK-12 program at the University of Georgia in collaboration with the College of Agricultural and Environmental Sciences and the Department of Food Science and Technology. This material is based upon work supported by the National Science Foundation under Grant Award No. DGE0229577. Any opinions, findings, and conclusions or recommendations expressed in this material are those of the authors and do not necessarily reflect the views of the National Science Foundation. FOOD FIGHT! 2 Contributors Contributing Author: Chris Wildman NSF Graduate Teaching Fellow Department of Animal and Dairy Science The University of Georgia Tifton, Georgia Collaborating Teachers: Danielle Armstrong Paul Blais Science Teacher Science Teacher Columbia High School Cedar Shoals High School Decatur, Georgia Athens, Georgia Reviewers: David Knauft, Ph.D. Steve Oliver, Ph.D. Professor Associate Professor Department of Horticulture Department of Science Education The University of Georgia The University of Georgia Athens, Georgia Athens, Georgia Robert Shewfelt, Ph.D. Professor Department of Food Science and Technology The University of Georgia Athens, Georgia FOOD FIGHT! ii Welcome to FOOD FIGHT! An Introduction for Teachers The most effective approaches to science instruction present scientific concepts in terms that are relevant and meaningful in students’ lives. As food is one of our most basic interests in life and a top priority in teenagers’ lives, the science behind our food is a natural perspective from which to approach high school science instruction. -
MARKETING UNHEALTHY FOODS to KIDS Why Regulation Is Critical to Reducing Obesity
MARKETING UNHEALTHY FOODS TO KIDS Why Regulation is Critical to Reducing Obesity A Growing, Global Obesity Epidemic • Worldwide, over 223 million children aged 5-18 years are now overweight or obese — 24 million more than in 2000 — and prevalence is expected to increase another 20% over the next decade.1,2 For preschool-aged children, prevalence has also risen 60% since 1990, with 43 million preschoolers now afFected and a Further 92 million at risk.3 • Low- and middle-income countries have experienced the most rapid rise in prevalence.4 In Latin America, for example, overweight and obesity now afFect 15-20% of children and adolescents in Colombia, a quarter to a third in parts oF Brazil, and well over a third in Mexico and Chile.2,5 • Even at a young age, obesity has serious health consequences, harming nearly every organ system and disrupting hormones that control blood sugar and normal development.4,6-9 • Carrying excess weight during childhood and adolescence can take a serious social and psychological toll, with increased risks For depression, anxiety, low selF-esteem, peer bullying, eating disorders, or poor perFormance in school.10-16 • Without intervention, children with obesity are likely to face overweight and obesity as teenagers and adults.7,17-20 They are also more likely to develop diseases such as diabetes, heart disease, and cancer at a younger age and Face shorter liFe expectancies.4,6,9,20-25 A Major Cause: Marketing to Children Television remains the most • The World Health Organization and other major health organizations -
CRISPR-Based Editing Techniques for Genetic Manipulation of Primary T Cells
Review CRISPR-Based Editing Techniques for Genetic Manipulation of Primary T Cells Mateusz Kotowski and Sumana Sharma * MRC Human Immunology Unit, John Radcliffe Hospital, University of Oxford, Oxford OX3 9DS, UK; [email protected] * Correspondence: [email protected] Received: 15 October 2020; Accepted: 14 November 2020; Published: 18 November 2020 Abstract: While clustered regularly interspaced short palindromic repeats (CRISPR)-based genome editing techniques have been widely adapted for use in immortalised immune cells, efficient manipulation of primary T cells has proved to be more challenging. Nonetheless, the rapid expansion of the CRISPR toolbox accompanied by the development of techniques for delivery of CRISPR components into primary T cells now affords the possibility to genetically manipulate primary T cells both with precision and at scale. Here, we review the key features of the techniques for primary T cell editing and discuss how the new generation of CRISPR-based tools may advance genetic engineering of these immune cells. This improved ability to genetically manipulate primary T cells will further enhance our fundamental understanding of cellular signalling and transcriptional networks in T cells and more importantly has the potential to revolutionise T cell-based therapies. Keywords: primary T cells; CRISPR/Cas9; genome-editing; CAR-T cells 1. Introduction In recent years, clustered regularly interspaced short palindromic repeats (CRISPR)/CRISPR- associated protein 9 (Cas9)-based techniques have transformed our ability to genetically manipulate mammalian genomes. Among the many fields within biomedical research to benefit from the ease of genetic manipulation using the CRISPR/Cas9 system is the study of the immune system and especially T cells.