QUALITY CHANGES OF BLUEBERRY FRUIT UNDER MODIFIED ATMOSPHERE PACKAGING
V. Chiabrando - G. Giacalone
The effects of modified atmosphere packaging (MAP) on the fruit quality of highbush blueberries (Vaccinium corymbosum L., cv Lateblue) were investigated. Blueberry fruit were packed into polypropylene film types and filled with 5 different atmosphere (10, 15, 20% CO2 and 5% O2; 15% CO2 and 10, 15% O2) or normal air (control). Blueberry packages were than stored in a cold room at 0°C and 90-95% relative humidity (RH) for 28 days. Physical, chemical and nutraceutical attributes were assessed during the storage period: weight loss, flesh firmness, total soluble solid content, titratable acidity, ph, anthocyanin contents, phenolic contents and total antioxidant capacity. Statistical analysis of data showed significant differences between the packaging and control berries. Total soluble content, anthocyanin contents and phenolic contents were highier for the control berries than for packed fruits. Storage in plastic films reduced weight loss and slowed down the deterioration in visual quality.

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1-METHYLCYCLOPROPENE (1-MCP) EFFECTS ON FRUIT AND VEGETABLE STORAGE
R. Moscetti - M. Contini - R. Massantini
The discovery of 1-methylcyclopropene (1-MCP) has given a powerful tool to carry out research studies to enhance the storability of fruit and vegetables and in the meantime understanding of ethylene physiological effects. 1-MCP can interfere with biosynthetic pathways in which ethylene itself is involved and its effects change depending on the concentration, temperature and application modality. The answer depends on the cultivar of the vegetables treated.

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PATHOGENICITY AND VIRULENCE FACTORS OF LISTERIA MONOCYTOGENES
P. Di Ciccio - M. Conter - A. Ianieri - V. D’Orio - A. Vergara
Listeria monocytogenes is an opportunistic intracellular pathogen that has become an important cause of human foodborne infections worldwide. Owing to the diversity in strain pathogenicity, the ability to track the strains involved in listeriosis outbreaks and determine their pathogenic potential is critical for the control and prevention of further occurrences of this disease. Despite the spectacular gains in knowledge, the virulence of L. monocytogenes as a foodborne pathogen remains poorly understood. The available pathogenesis and subtyping data generally fail to provide adequate insight into the virulence of field isolates and the likelihood that a given strain will cause illness. This review discusses the current progress in understanding the general features of virulence and pathogenesis of L. monocytogenes.

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DEPARTMENTS

ARS ALIMENTARIA

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CONFERENCE REPORTS

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OVERVIEW ON CONVENIENCE FOODS

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EXHIBITION REPORTS (MACFRUT, IBA, SAVE)

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MACHINES & EQUIPMENT

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DOWNSTREAM

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ANALYSIS & CONTROL

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PACKAGING

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PRODUCTS

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APPLIED RESEARCH

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NUTRITION & SAFETY

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MARKETING

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NEWS

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DIARY

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ADVERTISERS’ LIST

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COMPANIES’ ADDRESS

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