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Chemistry and Technology of Yoghurt Fermentation

Author: Ettore Baglio

Publisher: Springer

Published: 2014-06-03

Total Pages: 57

ISBN-13: 331907377X

This Brief reviews the chemistry behind the production of yoghurt through acidification of milk. It quantifies the changes in physical and chemical properties of yoghurt during fermentation with microbial organisms (such as Lactobacillus bulgaricus and Streptococcus thermophilus). It has been found that this symbiosis has an optimal development at a temperature of ca. 45°C with the transformation of lactose into lactic acid and small amounts of acetaldehyde, diacetyl and volatile acids. This Brief explains the chemical and physical results of the fermentation process, such as precipitation of proteins and the acid coagulation of milk with a clot formation in the final semi-solid mass. The Brief sheds light on the accomplishments of the fermenting organisms: they are responsible for the biochemical reactions of carbohydrate metabolism, proteolysis, lipolysis and flavour production in the process of yoghurt production. It also briefly reviews formulations and food additives used in the modern yoghurt producing industry.

Tamime and Robinson's Yoghurt

Author: A. Y. Tamime

Publisher: Elsevier

Published: 2007-03-22

Total Pages: 808

ISBN-13: 1845692616

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Previous editions of Yoghurt: Science and Technology established the text as an essential reference underpinning the production of yoghurt of consistently high quality. The book has been completely revised and updated to produce this third edition, which combines coverage of recent developments in scientific understanding with information about established methods of best practice to achieve a comprehensive treatment of the subject. General acceptance of a more liberal definition by the dairy industry of the term yoghurt has also warranted coverage in the new edition of a larger variety of gelled or viscous fermented milk products, containing a wider range of cultures.Developments in the scientific aspects of yoghurt covered in this new edition include polysaccharide production by starter culture bacteria and its effects on gel structure, acid gel formation and advances in the analysis of yoghurt in terms of its chemistry, rheology and microbiology. Significant advances in technology are also outlined, for example automation and mechanisation. There has also been progress in understanding the nutritional profile of yoghurt and details of clinical trials involving yoghurts are described.This book is a unique and essential reference to students, researchers and manufacturers in the dairy industry. Includes developments in the understanding of the biochemical changes involved in yoghurt production Outlines significant technological advances in mechanisation and automation Discusses the nutritional value of yoghurt

Yoghurt

Author: A. Y. Tamime

Publisher: McGraw Hill Professional

Published: 1999

Total Pages: 648

ISBN-13: 9781855733992

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In its first edition, this book quickly established itself as the essential reference tool and only comprehensive book available in its field for both industry professionals, and those involved in related fields of research. This completely revised and updated second edition is 40% longer than the first and includes developments such as the new bio-yoghurts, as well as all other recent changes and technological developments in the industry, including: the production of strained yoghurt by ultra filtration, the latest developments in mechanization and automation and the implementation of HACCP.

The Importance of Packaging Design for the Chemistry of Food Products

Author: Giovanni Brunazzi

Publisher: Springer

Published: 2014-07-08

Total Pages: 125

ISBN-13: 3319084526

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This Brief defines reliable correlations between the food packaging design and its chemical features in terms of an 'integrated food product' (the synergistic union composed of the edible content and its container). A good design, as described in this Brief, implies the best choices from a series of possibilities, taking into account economical and commercial influences or limitations in the production and processing chain and the chemical interactions that can arise between the food containers and the contained edible material. This Brief highlights how the different requirements can be combined, while avoiding dangerous food risks originating from the chemical interaction between the container and the product. Different designs are critically analysed with relation to the effect on contained foods. The influences and resulting consequences of different possible food packaging designs are highlighted and discussed in selected case studies for some every-day products (like potato chips).

Microbiology and Biochemistry of Cheese and Fermented Milk

Author: B.A. Law

Publisher: Springer Science & Business Media

Published: 1997-07-31

Total Pages: 394

ISBN-13: 9780751403466

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This new edition follows the successful structure of the first edition bringing together information on a wide range of fermented dairy products. It takes particular account of the profound influence that modern biotechnological sciences are having on the traditional biotechnology of dairy fermentations. For example, the taxonomy of lactic acid bacteria and of dairy pathogenic bacteria has been revolutionized in the past decade by the adoption of molecular biology techniques. Another important feature is the inclusion of a new chapter on the sensory evaluation of dairy flavors. This is a book for dairy scientists and technologists, both industrial and academic, particularly food chemists, dairy microbiologists and biotechnologists. It will also be an essential reference source for those in product development, processing and marketing, as well as regulatory officials in dairy companies and government laboratories.

Fermentation

Author: Bhavbhuti M. Mehta

Publisher: CRC Press

Published: 2012-04-12

Total Pages: 402

ISBN-13: 1439853347

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A large variety of food products all over the world are prepared by the fermentation of various raw materials. Fermentation: Effects on Food Properties explores the role of fermentation reactions in the chemical, functional, and sensory properties of food components as well as their effect on food component content and biological activity. Emphasizing the various chemical changes that take place during processing, both pre- and post-fermentation, the book explores: The complex microbial community in fermented foods The generation of the flavor and aroma compounds in fermented foods The effect of fermentation on the rheological properties and the color of foods The effect of fermentation on bioactivities of foods How microorganisms during fermentation can remove or detoxify antinutritional compounds in raw foods The fortification of products derived from fermentation processes and technical issues in the production and distribution of such foods Fermentation processes for cereals, legumes, vegetables, dairy products, seafood, and meat Food safety and adherence to the Hazard Analysis and Critical Control Points (HACCP) principles Mastering today’s art of fermentation processes requires detailed knowledge of food raw materials, microbiology, enzymology, chemistry/biochemistry, physics, engineering, and technology. This volume is an important starting point in understanding the process. Presented in concise, accessible chapters contributed by food experts, the book contains ample references to enhance further, more detailed exploration of this critical topic as we search for ways to enhance food quality for better health.

Manufacturing Yogurt and Fermented Milks

Author: Ramesh C. Chandan

Publisher: John Wiley & Sons

Published: 2008-02-28

Total Pages: 376

ISBN-13: 0470276533

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Melding the hands-on experience of producing yogurt and fermented milks over four decades with the latest in scientific research in the dairy industry, editor Chandan and his associate editors have assembled experts worldwide to write Manufacturing Yogurt and Fermented Milks. This one-of-a-kind resource gives a complete description of the manufacturing stages of yogurt and fermented milks from the receipt of raw materials to the packaging of the products. Information is conveniently grouped under four categories: · Basic background—History and consumption trends, milk composition characteristics, dairy processing principles, regulatory requirements, laboratory analysis, starter cultures, packaging, and more · Yogurt manufacture—Fruit preparations and flavoring materials, ingredients, processing principles, manufacture of various yogurt types, plant cleaning and sanitizing, quality assurance, and sensory analysis · Manufacture of fermented milks—Procedure, packaging and other details for more than ten different types of products · Health benefits—Functional foods, probiotics, disease prevention, and the health attributes of yogurt and fermented milks All manufacturing processes are supported by sound scientific, technological, and engineering principles. Manufacturing Yogurt and Fermented Milks is designed for professionals in the dairy and food industry as well as for upper level undergraduate and graduate students majoring in Food Science, Dairy Technology and related fields. Industry professionals, professors, and students engaged in research in dairy/ food science will find the book’s contemporary information and experience-based applications invaluable.

Microbiology in Dairy Processing

Author: Palmiro Poltronieri

Publisher: John Wiley & Sons

Published: 2017-11-29

Total Pages: 345

ISBN-13: 1119114802

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An authoritative guide to microbiological solutions to common challenges encountered in the industrial processing of milk and the production of milk products Microbiology in Dairy Processing offers a comprehensive introduction to the most current knowledge and research in dairy technologies and lactic acid bacteria (LAB) and dairy associated species in the fermentation of dairy products. The text deals with the industrial processing of milk, the problems solved in the industry, and those still affecting the processes. The authors explore culture methods and species selective growth media, to grow, separate, and characterize LAB and dairy associated species, molecular methods for species identification and strains characterization, Next Generation Sequencing for genome characterization, comparative genomics, phenotyping, and current applications in dairy and non-dairy productions. In addition, Microbiology in Dairy Processing covers the Lactic Acid Bacteria and dairy associated species (the beneficial microorganisms used in food fermentation processes): culture methods, phenotyping, and proven applications in dairy and non-dairy productions. The text also reviews the potential future exploitation of the culture of novel strains with useful traits such as probiotics, fermentation of sugars, metabolites produced, bacteriocins. This important resource: Offers solutions both established and novel to the numerous challenges commonly encountered in the industrial processing of milk and the production of milk products Takes a highly practical approach, tackling the problems faced in the workplace by dairy technologists Covers the whole chain of dairy processing from milk collection and storage though processing and the production of various cheese types Written for laboratory technicians and researchers, students learning the protocols for LAB isolation and characterisation, Microbiology in Dairy Processing is the authoritative reference for professionals and students.

Chemistry and Technology of Honey Production

Author: Ettore Baglio

Publisher: Springer

Published: 2017-09-25

Total Pages: 40

ISBN-13: 3319657518

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This Brief explains and discusses honey and its production from a chemical perspective. It outlines why honey is a special and unique food, being produced by bees from the nectar of plants or from secretions of living parts of plants. Although glucose and fructose are the main constituents of honey, its overall composition is far from being simple or uniform: other substances such as organic acids, enzymes, or minerals are found in varying amounts. In this Brief, the author addresses the factors that influence the composition of the honey as well as the consequences that the composition has on properties such as color, crystallization, density, viscosity, or the refractive index. This Brief also introduces some of the most commonly used quality parameters for the determination of ageing and/or overheating: 5-hydroxymethylfurfural (HMF) and diastase. Other recently proposed constituents for quality parameters are also mentioned, e.g. 1,2 dicarbonyl compounds (3 deoxyglucosone, methylglyoxal, glyoxal) and furosine, also named 2-furoylmethyl lysine.

Safety Protocols in the Food Industry and Emerging Concerns

Author: Giovanni Gurnari

Publisher: Springer

Published: 2015-03-27

Total Pages: 103

ISBN-13: 3319164929

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This brief reports about safety protocols in the food producing industry. Hygiene, i.e., the prevention of contamination and microbial infections, is of greatest importance in the industry, as are disinfection techniques, to prevent or to fight microbial contaminations and infections, and practical emerging concerns are centered around these fundamental concerns. The first part focuses on the attempts and possibilities to prevent microbial spreading. Part II discusses disinfection techniques and their risks, advantages and disadvantages. Current industry trends, such as the attempts to substitute chlorine in disinfection, are critically reviewed. In all, this brief volume discusses decision procedures and strategies that are being applied to prevent, reduce and fight microbial spreading. In particular, material that comes into contact with the foods, has to fulfill strict requirements. This aspect is explained in detail, and how little details can have great effects. The brief deals with the important question: is disinfection more an ally or an enemy?