Packaging & Logistics

Fraunhofer IML puts open source software DISMOD online

Based on experience from a large number of industrial projects related to the supply chain, the transport experts at the Fraunhofer Institute for Material Flow and Logistics IML have expanded their successful planning software "DISMOD - modal distribution planning" just in time for the transport logistic trade fair in Munich with the latest processes and technologies as well as free ones Demo version put online.

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No health risk from bisphenol A

For more than ten years there has been a controversial debate as to whether bisphenol A (BPA) poses a health risk to consumers. BPA is a building block for the production of the widely used polycarbonate plastics. Due to the EU's recent ban on bisphenol A in baby bottles, the substance has once again become the subject of public discussion. Against this background, the advisory committee of the Society for Toxicology has critically examined the current research results on bisphenol A and assessed possible health risks. The results were recently published in the Critical Reviews of Toxicology (Hengstler et al., 2011).

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Chill-ON! Transparency in the cold chain

Traceability of chilled and frozen food for more security

Regardless of where poultry or fish come from, freshness and food quality contribute directly to customer satisfaction. In order to ensure this, everyone involved in the supply chain must work together. The EU-funded research project CHILL-ON offers new technologies for the most complete traceability possible along the supply chain.

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Innovative concepts of product and process design

DIL seminar series on the subject of meat and sausage products has become established

The second edition of the seminar organized by the German Institute for Food Technology (DIL) repeated the success of the first edition last year. 60 participants from Germany and abroad came to Quakenbrück to find out about current developments in the production of meat and sausage products. The product tasting that followed showed that the knowledge imparted can be immediately put into practice and results in tasty meat and sausage products.

New technologies for new markets

The event was opened last October with the contribution of the DIL institute director Dr. Volker Heinz on the subject of "New technologies for new markets". Product-friendly and energy-efficient processes were presented, the mechanisms of which have been known and tested for a long time and are increasingly being geared towards use in industry. One example is high-pressure technology. The aim of treating foodstuffs with hydrostatic pressure is often preservation while at the same time preserving the valuable ingredients. But this technology is also used in the structuring of products, in the context of biotechnological applications and in the functionalization of food. Shock wave technology, on the other hand, is a process in which hydrodynamic pressure waves are used in a targeted manner to exert mechanical influences on biological tissue and other solids. In this way, for example, the maturing and tenderizing of beef can be accelerated so that the product quality is increased and distribution and storage costs are reduced. The technology that makes use of the pulsating electric fields can be used, for example, to inactivate microorganisms and thus as a method of preservation. Sauces, seasonings, marinades and blood are examples of areas of application. The advantages of this process lie in the reduced energy requirement and the protection of the product.

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Food packaging made from recycled materials must be safe

The ninth BfR Consumer Protection Forum deals with health risks from recycling packaging

Around 300 participants discussed food packaging made from recycled materials and their benefits at the 9th BfR Consumer Protection Forum at the Federal Institute for Risk Assessment (BfR) in Berlin last week sustainable management and its health risks for consumers. For example, cardboard packaging made from recycled paper has been the subject of discussion in recent months after it was found to contain mineral oil residues, which can be transferred to the food in the packaging in relevant quantities. "A conclusive health assessment of these residues is currently still difficult because they are complex mixtures," says BfR President Professor Dr. dr Andrew Hensel. There are also only a few laboratories that have suitable analysis devices for their detection. The participants of the BfR Forum agreed that solutions for reducing the transfer of mineral oil from cardboard packaging made of recycled paper to food must be found as a matter of urgency.

Hours to months, in some cases even years, pass between the harvesting or production of a food and the consumption of the product. In order to store, transport and protect food from spoilage, it is packaged. Food packaging has changed a lot in the last few decades. For example, if you went shopping for milk 50 years ago, you also brought the milk jug made of glass or metal with you, today you usually buy a composite carton that is recycled after the milk has been consumed.

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Radio chip and sensor in one

Looked over the edge

RFID technology is on the rise. So far, however, radio chips have essentially only provided data for product identification. Researchers have now developed a transponder that measures temperature, pressure and humidity. The chip with sensor function could revolutionize the application market.

 Instructions of this kind can be found in many package inserts: »The serum must be stored between +2° and +8° C. Both freezing and storage at elevated temperatures should be avoided, since the effectiveness and tolerability can be impaired.« Medications, vaccine serums or blood preserves are very temperature-sensitive. Doctors, pharmacists and hospitals also have refrigerators for this. But what happens during transport from the pharmaceutical manufacturer to the end user? In order to monitor the temperatures during the delivery routes, manufacturers could use a new RFID technology in the future. If the temperature rises unexpectedly during refrigerated transport, the intelligent chip immediately registers the fluctuation and reports it to the reader.

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Still closed? Dresden researchers measure whether packaging is really tight

Everyone knows them, everyone uses their properties: packaging films! Whether sausage, cheese or bread: packaging films protect the food and keep it fresh for longer. The packaging film that is ubiquitous in supermarkets has to fulfill a task that initially seems simple: it has to protect the food effectively from the gases in the atmosphere that are responsible for aging the food. These "harmful" gases are essentially water vapor and oxygen.

The principle of protecting a sensitive product with a so-called barrier material is not only used in the food industry. In the pharmaceutical sector, too, the drugs produced must have a long shelf life. And in the technological field of photovoltaics or organic light-emitting diodes (OLEDs), the principle "Protect against moisture!" applied, because pixel errors reduce the energy yield of the solar cells or literally cloud the viewing experience on OLED screens. While food packaging allows around 1 g of water vapor to slip through a film area of ​​one square meter every day (experts say “permeate”), the barrier films in OLED production may only be permeable to a millionth of this, i.e. 1 - 10 µg H2O. Researchers around the world are working on developing films with such an ultra-barrier effect.

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"Smart labels" in the trash? Study published

The Federal Environment Agency publishes a study on the consequences of RFID technology. Study leader Lorenz Erdmann from the Berlin IZT - Institute for Future Studies and Technology Assessment: "If one day large numbers of RFID tags end up in the waste without a well thought-out preventive concept, irrecoverable contamination of the recycled goods glass and plastic can result". The researchers therefore recommend a dialogue between manufacturers and disposal companies. The research partner was the EMPA - Eidgenössische Materialprüfungs- und Forschungsanstalt in St. Gallen.

Up to now, "intelligent labels" can only be found in retail stores on the packaging of high-quality razor blades and expensive perfumes, where they complement the barcode. In the future, these high-tech chips with metal antennas ("RFID tags") will possibly be applied to all packaging in retail stores and could even completely replace the barcode. The decisive innovation is: The RFID tags can be read without contact by radio using special readers, which changes the anti-theft protection, cashing out and the system of reordering in the shops. The abbreviation RFID stands for: Radio Frequency Identification.

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Oxygen - MAP adversely affects meat

Source: Packaging Technology and Science 22 (2009), 85-96.

It is well known that oxygen has a significant negative effect on the sensory quality of meat and meat products, but is still denied as "not available" or "unimportant" in the packaging of fresh meat due to the red color effect of oxygenated muscle dye in the packaging of fresh meat, which is regarded as promoting sales. Such packs are then also often declared as protective gas packagings with a nebulizing effect, whereby this is a term for types of packagings that protect precisely against contact of the contents with oxygen. CLAUSEN et al. also demonstrated in detail in their work the harmfulness of oxygen for the packaging of meat through comparative studies of different MAP packages (MAP = modified atmosphere package) (Modified Atmosphere Packaging Affects Lipid Oxidation, Myofibrillar Fragmentation Index and Eating Quality of Beef). Beef steaks (M. longissimus dorsi) served as sample material, in which, depending on 11 different types of packaging, TBARS (= thiobarbituric acid-reactive substances) as usual as an indicator of fat changes, the myofibriallary fragmentation index (= MFI) to break down the muscles, the sensory status, the protein oxidation , Vitamin E content, weight loss and cooking loss were recorded. The packaging gases used were O2, CO2, N2, various mixtures of these and also packaging in a vacuum. The samples were not only cut open freshly slaughtered, but also initially packaged in one piece in vacuum packaging for 14 to 18 days before being cut. In general, the samples from types of packaging containing oxygen showed significant increases in warm-up taste and in TBARS levels, combined with a decrease in their juiciness, tenderness and vitamin E content. In addition, the MFI as an expression for the digestion of the meat protein fraction was lower in packaging types with high O2 concentrations - this in combination with increased protein oxidation.

According to CLAUSEN et al. the conclusion that the significantly lower tenderness of meat in the presence of oxygen is due to delayed proteolysis, which occurs as meat ripening, in connection with protein oxidation. In addition, the cooked samples from packaging with higher oxygen concentrations lacked a pink cut even at low core temperatures of only 62 ° C, which is often desired as “medium” cooked, especially when preparing steaks. Rather, the cut looked gray and as though it had been cooked through, with the outside also appearing to be roasted darker compared to the identically heated control samples. In contrast, in the case of samples packed under nitrogen, no changes whatsoever compared to vacuum-packed samples were measurable. Steaks that had been vacuum-packed for 20 days exhibited less tenderness than 18 days identical under pure nitrogen and then samples even stored in air for the remaining two days.

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Internet-based case study database with applications of RFID - technology

The International Performance Research Institute has created an internet-based case study database for the documentation of possible uses, advantages and disadvantages as well as experience of RFID technology. The database created as part of a research project funded by the Foundation for Industrial Research is available at http://www.rfidiki.de. Interested companies are welcome to post their own case studies, find out about RFID technology and exchange information with other users.

As part funded by the Industrial Research Foundation project "RFID-specific Extended Performance Analysis for the global assessment of RFID investments" the International Performance Research Institute has, inter alia, an Internet-based case study database constructed. The aim of this database is to document applications of RFID technology in companies and provide experience. In addition, information is provided about the technology itself, to organizations and suppliers of RFID and research projects, which deal with the subject.

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