161 research outputs found
Evoluzione delle temperature in pasti monoporzione trasportati per la refezione scolastica
No full textTemperature maintenance in commissary foodservice systems is a critical point for preplated meals, which are usually prepared for special diets. In this case, temperature changes during assembly and transport of pre-plated meals are much faster than in bulk meals, due to the small quantity of food present in each plate. This study was carried out with the cooperation of a school foodservice organization operating in a wide Northern Italy district. The objective was the evaluation and control of temperature profiles in single-serving pre-plated meals, in order to define suitable procedures to assure service temperatures of meals which are in accordance with hygienic and sensory requirements. Temperature profiles of pre-plated warm and cold foods were monitored by positioning micro temperature recorders and thread-like thermocouples in the food. Plates were sealed and stored in controlled temperature conditions, in order to: a) simulate representative operative conditions; b) validate the standard operating procedures implemented by the foodservice system
From vegetable food waste to earthworms as novel food/feed: microbial hazard identification
No full textFrom vegetable food waste to earthworms as novel food/feed: microbial hazard identification D. Tedesco, J. Parisi, M. Castrica and C. Balzaretti Department of Health, Animal Science and Food Safety, University of Milan, Via Celoria 10, 20133 Milano, Italy; [email protected] Earthworms grown on fruit and vegetable waste can be a future alternative, and sustainable, food/feed source, contributing to waste disposal efficiency, responding to global food demand and reducing GHG (Greenhouse Gases) emission. In this study, we evaluated the earthworms (Eisenia foetida) when reared on food vegetable waste, in order to establish critical limits and critical control points (HACCP) of this rearing system, for the prevention, elimination or reduction of identified microbial hazards. Our aim is to verify the safety of these new food / feed, regarding the presence of pathogenic micro-organisms, other than those provided by the reg. (EU) 2073/2005. In our first HACCP evaluation, the earthworms from this rearing process were characterized by levels of microflora ranged above common benchmark and threshold values to be considered a safety product. In this step, continuing on the HACCP system and Critical Control Point (CCP) identification, we evaluated the microbial contamination of earthworms (Eisenia foetida) reared on food vegetable waste that belong to the category ‘fruit and vegetables to consume raw, uncut and unprocessed’. The earthworms samples from this rearing process were analyzed according to AFNOR and ISO methods for Total Bacterial Count, Enterobacteriaceae, coagulase-positive Staphylococci, Bacillus cereus, Total Coliforms, Listeria Monocytogenes, sulphite reducing Clostridia, Escherichia coli and Salmonella spp. Bacterial counts were expressed as Log cfu/g sample. Conforming to the Reg. (EU) 2073/2005, Salmonella spp. and Listeria monocytogenes were absent in 25 g samples; Escherichia coli and coagulase-positive Staphylococci were below the detection limit (1 log cfu/g). Nevertheless, samples were characterized by unsatisfactory levels of Enterobacteriaceae and total coliforms, whereas Bacillus cereus and sulphite reducing Clostridia were slightly higher than the acceptable safety range. Considering that fruit and vegetable waste substrate, represents the primary source of microbiological contamination for earthworms and consequently a relevant CCP, other detailed studies are needed to reduce the hazard and guarantee the safety of this new nutritional source
From vegetable food waste to earthworms as novel food/feed: microbial hazard identification
No full textFrom vegetable food waste to earthworms as novel food/feed: microbial hazard identification D. Tedesco, J. Parisi, M. Castrica and C. Balzaretti Department of Health, Animal Science and Food Safety, University of Milan, Via Celoria 10, 20133 Milano, Italy; [email protected] Earthworms grown on fruit and vegetable waste can be a future alternative, and sustainable, food/feed source, contributing to waste disposal efficiency, responding to global food demand and reducing GHG (Greenhouse Gases) emission. In this study, we evaluated the earthworms (Eisenia foetida) when reared on food vegetable waste, in order to establish critical limits and critical control points (HACCP) of this rearing system, for the prevention, elimination or reduction of identified microbial hazards. Our aim is to verify the safety of these new food / feed, regarding the presence of pathogenic micro-organisms, other than those provided by the reg. (EU) 2073/2005. In our first HACCP evaluation, the earthworms from this rearing process were characterized by levels of microflora ranged above common benchmark and threshold values to be considered a safety product. In this step, continuing on the HACCP system and Critical Control Point (CCP) identification, we evaluated the microbial contamination of earthworms (Eisenia foetida) reared on food vegetable waste that belong to the category ‘fruit and vegetables to consume raw, uncut and unprocessed’. The earthworms samples from this rearing process were analyzed according to AFNOR and ISO methods for Total Bacterial Count, Enterobacteriaceae, coagulase-positive Staphylococci, Bacillus cereus, Total Coliforms, Listeria Monocytogenes, sulphite reducing Clostridia, Escherichia coli and Salmonella spp. Bacterial counts were expressed as Log cfu/g sample. Conforming to the Reg. (EU) 2073/2005, Salmonella spp. and Listeria monocytogenes were absent in 25 g samples; Escherichia coli and coagulase-positive Staphylococci were below the detection limit (1 log cfu/g). Nevertheless, samples were characterized by unsatisfactory levels of Enterobacteriaceae and total coliforms, whereas Bacillus cereus and sulphite reducing Clostridia were slightly higher than the acceptable safety range. Considering that fruit and vegetable waste substrate, represents the primary source of microbiological contamination for earthworms and consequently a relevant CCP, other detailed studies are needed to reduce the hazard and guarantee the safety of this new nutritional source
When Innovation meets Tradition : the case of " Riso &Rane" Rural District in Lombardy Region
No full textLombardy, with 87.393 hectares of rice is one of the leader region for this production in Italy and in the European Union (EU) too. This area is characterized by a strong connection with tradition both in terms of agricultural landscape and food culture. Nevertheless, during the last decade, farmers faced increasing competitiveness issues, mostly related to EU subsidies losses, market prices and the technical constraints of the traditional rice supply chain: provider of technical means, farmers, brokers and rice mill. In this scenario, the “Riso e Rane” Rural District (R&RD) supports farmers in improving competitiveness through innovation. The aim of the paper is to investigate the innovation in the rice supply chain related to the specific action of R&RD, that accounts for 60 farms. Starting from the direct survey carried out on the district productive structures, we investigate the farms' degree of innovation related to the adoption of a new model of supply chain. The case study areas is characterized by rice that represents the most important culture with 2.773 hectares (more than 58% of the district Utilized Agricultural Area (UAA)). In 2012, R&RD won a regional project titled “Buono, Sano e Vicino” with the aim to help local rice farmers developing an alternative supply chain in which the district grow into the local actor to increase farmers bargaining power and promotes new market strategies. To make this the attention was focused on one of the most important variety of Italian rice: Carnaroli. The main results of the study showed that the project was able to innovate the traditional supply chain in all the four innovation areas according to OECD (2005): product, process, market and organization. In conclusion, our results suggest that the R&RD is able to respond to farmers necessities in term of market competitiveness and to improve the sustainability of local food system
Consumers’ preferences for a local food product: the case of a new Carnaroli rice product in Lombardy
No full textItaly, with a cultivated area of 218,000 ha, is a European leader of rice production. In particular Lombardy region accounts for 40% of total rice cultivation and the case study in object accounts for 3.2% of Lombardy total rice area (2773 ha). Starting from 2012, through a regional project titled Buono, Sano e Vicino (good, healthy and close), Riso e Rane rural district supported local rice farmers in developing innovation in rice production and promoting an alternative supply chain to increase farmers bargaining power and promote new market strategies. More specifically, the innovation introduced is a new biotech method for variety certification, named DNA controllato (DNA tested). In the first step of the project, the attention was focused on an Italian traditional variety of rice: Carnaroli rice. Thanks to a commercial agreement with one of the most important large retailers in Lombardy, the Riso e Rane rice is offered for sale both in the traditional and wholegrain version. In this context, this work aims to evaluate the determinants of consumer’s quality perception of this product, through a preference study of the commercial rice package. Preliminary results reveal that consumers perceive information about origin, local food-system and tradition more easily than DNA tested certification. In conclusion, this work contributes to evaluate the role of bio economy applications to the food sector and offers new insights for the debate about the relationships between tradition and innovation
Loss of motility of subgingival bacteria in specimens prepared for dark-field microscopy examination
No full textAmount of mineralized tissue removed by root planing
No full textThe Author's aim was to determine the amount of mineralized tissues removed during root planing conducted by means of a curette, using a profilometer. Records were kept at time 0 and after 4 cycles of 5 strokes each. Mean values of final records show that the average of tissue removal, expressed in microns, was greater than the mean thickness of cementum in the instrumented areas
Rapid method for detection of Anisakidae larvae in marine fishes, based on UV transillumination
No full textA rapid and sensitive detection method is proposed to evaluate the presence and vitality degree of Anisakidae larvae in marine fishes by UV diaphanoscopy. 923 fish samples belonging to seven fish species (Merluccius merluccius, Molva elongata, Sardina pilchardus, Scomber scomber, Triglia lucerna, Engraulis encrasicolus, and Trachurus trachurus) were evaluated for the presence of Anisakidae larvae by using direct observation, peptic digestion, and UV transillumination. The results obtained indicate that UV transillumination can be considered a rapid and accurate tool for routine analysis of marine fishes even under field condition
Sostenibilità della filiera corta : analisi degli approvvigionamenti nella ristorazione scolastica del Comune di Milano
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