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Articles

Protein-polyphenol interactions

11 August 2006 | By Richard Frazier, Lecturer, School of Food Biosciences, University of Reading and Rebecca Green, Lecturer, School of Pharmacy, University of Reading

Evidence has been reported that dietary consumption of plants and plant products that are rich in tannins, such as cocoa, wine, tea and berries, can be related to protective effects against cardiovascular disease and certain forms of cancer. These protective effects are assumed to stem from the antioxidant activity of…

State-of-the-art in GMO analyses

11 August 2006 | By Katervina Demnerová and Kamila Zdenvková, Department of Biochemistry and Microbiology, Institute of Chemical Technology Prague and Jaroslava Ovesná, 2Reference Laboratory for the Identification of Genes in Genetically Modified Organisms, Research Institute of Crop Production, Prague-Ruzynev

Genetically modified organisms (GMO) are the products of modern biotechnologies. The name GMO was first used years ago to describe micro-organisms that had genes from other species transferred into their genetic material by the transformation. Applied to crops, the term refers to any genetic plant type that has had one…

Listeria monocytogenes – a recent history

11 August 2006 | By P A Voysey, Campden and Chorleywood Food Research Association

Listeria monocytogenes is a pathogenic bacterium and one of six species belonging to the genus Listeria. This species is the only one believed to be pathogenic to man; however, not all L. monocytogenes serotypes have been linked with illness. The bacterium is very common in the environment. It has been…

Reducing acrylamide in bakery products

23 May 2006 | By Dipl.-LM-Ing.Achim Claus, Prof. Dr. Reinhold Carle and PD Dr.Andreas Schieber, University of Hohenheim, Institute of Food Technology, Section Plant Foodstuff Technology

Acrylamide is a food-borne toxicant mainly present in roasted, baked and deep-fried foods. To minimise acrylamide levels in bakery products, a comprehensive knowledge of the factors affecting its formation is indispensable. Based on this knowledge technological strategies may be developed. Due to the potential carcinogenic properties of acrylamide1 the announcement…

Analysing barley to beer chain

23 May 2006 | By Jari Rautio, Reetta Satokari, Kari Kataja,Anne Huuskonen, Heikki Vuokko,Arja Laitila,Annika Wilhelmson, Silja Home, Hans Söderlund and John Londesborough,VTT Technical Research Centre of Finland

VTT’s novel TRAC system is a rapid, accurate and economic method to quantitate specific messenger RNA molecules and other gene transcripts. In the barley-beer chain, it can be used to characterise yeast condition, to monitor fermentation and malting and to measure the levels of harmful and beneficial microorganisms through the…

Creating an atmosphere for food

23 May 2006 | By Sabine Paulussen and Dirk Vangeneugden, Materials Technology Department, Flemish Institute for Technological Research, Belgium

The use of polymer films for food packaging has drastically increased during the course of several decades. However, the specifications demanded for these polymer films have increased simultaneously, as well as the pressure surrounding environmental impact and production cost.Today, one of the key challenges is the development of food packaging…

Looking back

23 May 2006 | By Ellen Moens-Go Yanko, Office Manager, EHEDG

2005 was a busy year for EHEDG with much achieved and many developments made. Dr Matilda Freund, EHEDG President and Director Global Microbiology and Food Safety, Kraft Foods, sums up the past year’s achievements...

Chocolate cooling and demoulding

23 May 2006 | By Dave Cruickshank, Chocolate Development Manager, Cadbury Trebor Bassett

Tempering and cooling are best regarded as two parts of the same process: the solidification of chocolate.There are interactions between the two processes and they both need to be carried out correctly in order to ensure an efficient process and create a high quality product.This article examines these processes and…

Cocoa butter fractionation

23 May 2006 | By Dr Gijs Calliauw, Chemical Engineer, De Smet-Ballestra

In the oils and fats industry, there is an ever increasing demand for products with very special physical properties for food applications and this demand propels improvement and new developments in oil modification techniques.The constant evolution in technology and process knowledge makes it possible to modify the textural properties of…

Predicting fat and quality of meat

23 May 2006 | By Marjeta Candek-Potokar,Agricultural Institute of Slovenia

Use of near infrared (NIR) spectrum as an analytical tool has been established for some time, however it became popular only after the invention of high performance spectrophotometers associated with multivariate data analysis.Today NIR spectroscopy is also widely and successfully used in food analysis. First attempts to use NIR spectroscopy…

Antimicrobial surfaces in the food industry

23 May 2006 | By Dr Terence Child CSci CChem FRSC, Hygiene Consultant

The application of antimicrobial surfaces in the food industry is creating considerable interest in all aspects of food processing operations.The objective of this article is to review and put into perspective the main technologies currently available for applications in this area. Fully embedded systems and surface coated systems will be…

Impact of mild preservation techniques on packaging

23 May 2006 | By Iekje Berg, Hetty Jongbloed, Leo van Boxtel, TNO Quality of Life, Zeist

Micro-organisms are the main cause of food spoilage (spoilage organisms) and food-borne diseases (pathogens).Traditional methods to control the growth of micro-organisms include heating (blanching, pasteurisation and sterilisation), freezing and the use of preservative agents. However, consumer demands are changing and they are now asking for fresh, healthy food combined with…

Multiple chemical contaminants in foods

23 May 2006 | By Professor Christopher Elliott, Institute of Agri-Food and Land Use, Queen’s University, Belfast

Over the past decade, the presence of chemical contaminants in foods has probably had a greater impact on the global food trade than any other food-related issue.The reasons for the continued attention directed towards chemical contaminants are complex and associated with a number of separate, yet interrelated factors.

Inspiring dairy technology

23 May 2006 | By Mr Ollie Tossavainen, Research Manager, Valio Ltd, Finland

In April 2006 Valio won a Gold European FoodTec Award at Anuga Foodtec for their lactose-free milk technology, used to process such products as Valio Lactose free milk drink, Emmi Lactose free milk drink and Kaiku Lactose free milk drink.The technology completely eliminates lactose from milk without affecting the taste…

Spray drying of dairy products: a review

9 March 2006 | By Pierre Schuck, Science et Technologie du Lait et de l'CEuf, Inra-Agrocampus

Milk is extremely perishable and yet, for a number of reasons, it has to be preserved for later consumption. The removal of water prevents the growth of micro-organisms and facilitates preservation and storage of milk constituents. Spray drying is one of the most convenient techniques for producing milk powders and…