Caterina Barone

Salvatore Parisi

Michele Barone

Izabela Steinka

Marcella Barbera

This Brief explores the chemistry and production technology of a cheese precursor: the cow’s milk curd. It explains how different coagulation and treatment methods can be used to obtain various types of cheeses. Parameters such as the type of used milk, the coagulation method, pH value, color, and microbial fermentation have a profound impact on the resulting curd properties, and hence on the cheese. The authors discuss some of the most important parameters, and how their modification can lead to a variety of cheese and dairy products. This Brief also addresses the question, if cheese makers can standardize their production procedures, and what role chemistry may play in that. Another important point addressed here are the sources of failures in the curd production, e.g. in packaging systems. Readers will find selected examples of helpful analytical techniques for studying and evaluating curd quality, and for monitoring the chemical evolution of selected chemical substances or protein aggregation.

Chemical Profiles of Industrial Cow’s Milk Curds

Ramesh Kumar Sharma

This Brief provides a general description of the European Rapid Alert System for Food and Feed (RASFF). It describes the RASFF approach on the legal level and with reference to notification procedures, including also new tools, which were launched in 2014: iRASFF and the RASFF Consumer Portal. In an introduction, the present status of the RASFF, which had originally been introduced in 1979, is briefly reviewed. It is described as the main basis of modern food policy in Europe, enabling member countries to take rapid corrective actions on the one hand, and to perform statistically reliable analyses of food-related hazards on the other hand. One chapter contains a statistical evaluation of RASFF notifications in general, and specifically with regard to chemical contaminants, including also allergens. In another chapter, reasons for rejections of food and feed at the European borders are analyzed in selected case studies. The Brief provides an easy description for the chemical dangers and contaminants it is referring to, outlining the names, properties, uses and importance in the food and feed industry, toxicological effects, and contamination sources. The last chapter offers an outlook on the future of the RASFF and possible expectations.

The Rapid Alert System for Food and Feed (RASFF)

Chemistry and Food Safety in the EU

Angela Montanari

Anna Santangelo

This Brief describes the chemical features of canned food products and gives background information on the technology of canning foods. It explains how canned foods are different from other packaged foods, and illustrates and discusses their unique properties, including risks and failures. Canned foods are usually considered to offer a particularly long shelf-life and durability. An understanding of their properties and influences on their durability is therefore of great importance in the industrial production, and this Brief offers a compact introduction to this topic. The authors focus on thermally-preserved foods. They explain that the right choice of thermal treatment method (e.g. pasteurisation, sterilisation) as well as process parameters (e.g. time, temperature) is additionally influenced by criteria such as pH, water content, the presence and concentration of fatty molecules, of calcium, etc. So-called ‘survival curves’ can help in determining the methodology of choice, and the Brief introduces the reader to this concept. The authors also address defects and failures. They introduce selected indicators, which can help identifying failures of the entire food/packaging system, and demonstrate how image and visual analysis can be applied in quality controls. The explanations and industrial production of canned foods are exemplified with the case of canned tomato sauces and beans.

Thermal Treatments of Canned Foods

Marina Micali

This Brief presents a chemical perspective on frozen vegetables, also known as “ready-to-use” foods. It elucidates the chemical properties and modifications of vegetables from harvest and treatment to the end of their long shelf-life. Particular attention is given to the microbiological colonization of vegetables during the freezing treatments and to the chemical and physical modifications associated. The authors explore the undesired effects of this colonization through the lens of the antibiotic-resistant Staphylococci found in hermetically-package frozen vegetables. With this informative and instructive Brief, readers will understand the importance of the frozen storage technologies.

The Chemistry of Frozen Vegetables

Vico Faggi

lo spettro sulla scena tragica, da Eschilo a Shakespeare

Le metamorfosi del fantasma

Caterina Barone

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