Chemistry and Physics of Complex Materials: Concepts and by Maria Rajkiewicz, Wiktor Tyszkiewicz, Zbigniew Wertejuk

By Maria Rajkiewicz, Wiktor Tyszkiewicz, Zbigniew Wertejuk

This ebook deals a complete presentation of the options, houses, and purposes of advanced fabrics. Authors of every bankruptcy use a primary method of outline the constitution and houses of quite a lot of solids at the foundation of the neighborhood chemical bonding and atomic order found in the fabric. Emphasizing the actual and chemical origins of other fabric houses, this crucial quantity makes a speciality of the main technologically vital fabrics being applied and built through scientists and engineers.

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Extra resources for Chemistry and Physics of Complex Materials: Concepts and Applications

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New antimicrobial active package for bakery products. Trends in Food Science & Technology, 2009, 20(2), 92–99. 17. ; Faleiro, M. ; Miguel, M. G. Composition of the essential oils of Thymus and Origanum species from Algeria and their antioxidant and antimicrobial activities. Journal of Agricultural and Food Chemistry, 2006, 54(17), 6314–6321. 18. Ho, C. ; Wan Aida, W. ; Maskat, M. ; Osman, H. Optimization of headspace solid phase microextraction (HS-SPME) for gas chromatography mass spectrometry (GC-MS) analysis of aroma compound in palm sugar (Arenga pinnata).

HEADSPACE ANALYSIS BY HS-SPME-GC-MS Food samples (whole strawberries and sliced bread) were placed into the polyethylene container described in the previous section in direct contact with the PP films and samples were extracted at selected times to determine the headspace composition. Containers were sealed and a PTFE/ silicone septum was placed on their top part to allow the insertion of the SPME fiber for volatiles extraction (Fig. 1). Samples were then stored in a climatic chamber and tested at different temperatures and days of storage 10 Chemistry and Physics of Complex Materials: Concepts and Applications according to the conditions shown in Table 1.

OBSERVATION OF FUNGAL GROWTH This study was conducted to evaluate the antimicrobial activity of the developed films and their ability to act in active packaging formulations to increase the fresh food shelf-life. It was based on the visual observation of the inhibition of the fungal growth on food samples by the action of the volatile active additives, carvacrol and thymol. In this sense, some studies by other authors showed the effectiveness of these compounds against different fungal strains of particular interest in the food industry [24].

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