Among the methods that lead to acidification of the product include products preserved with vinegar

Author: Source:
TRACK HOTEL: THE RUNNING OF THE TRACK OF FOOD AND NUTRITION FOR THE MATURITY 2014. For the test run of Food and Supply of high school students from the 2014 (Technician of Catering) have faced the following conagra foods russellville ar track chosen conagra foods russellville ar by the Ministry of Education: "From time immemorial, people have to worry about storing food, although in years the motivations and techniques have changed. candidate outlining the various methods used in the food industry and for specifying the different categories of foods which are the most appropriate conservation measures. " FOR MORE INFORMATION FOLLOW LIVE: Second test maturity 2014: tracks, solutions or unwinds CONDUCT TEST HOTEL FOOD AND NUTRITION MATURITY: To play the track, conagra foods russellville ar with only the help of a dictionary of Italian leavers had available six hours. The tutor Studenti.it have worked with them and for them doing the theme hotel sectors for the Examination of Maturity 2014 Here it is:
The term retention refers to a number of possible processes which allow to maintain for a longer time in the nutritional characteristics, physical-chemical, hygienic and organoleptic characteristics of the food, for a time more or less long depending on the times and methods of treatment . Since ancient times, man has used various methods of preservation, as it allowed him to consume some foods abundant in some seasons, in others they were less present among these especially salting, smoking and drying; relic of times past are still preserved vegetables, jam or tomato puree, which through simple conagra foods russellville ar processes, such as cooking and acidification and allow to extend even to the very preservation. The global markets have made it increasingly important extension of the storage of food, because food often make long journeys before reaching the final consumer. The distribution of food has become more complex and global, that lead to the birth of a new term: the "shelf-life"; literally means shelf life, which indicates the time of possible consumption of the food sold on the shelves of retail outlets of large and small food retailers. So today we no longer speak of life for its food consumption and food security, but they have shifted the focus of attention on its sale, dressing the term conservation of a new and more complex meaning. These global processes have led man to wonder how to store food for longer while preserving as much as possible the original features, hence the emergence of new and more effective methods of prolongation of storage, together with new scientific discoveries and changing needs of the consumer. conagra foods russellville ar
The methods are varied but can be divided into three main groups: chemical, biological and physical. Chemical methods allow the lowering of the pH of the food, therefore, the increase of its acidity or the decrease of 'water free, ie not bound chemically with other compounds. These two factors are effective in conservation because they act on two of the key factors in the degradation of the food; or water, fundamental matrix for the life of the majority of microorganisms and enzymatic processes naturally active in the food, and the acidity, as some micro-organisms can not survive at pH lower than 4.5. The acidification is carried out by means of preservatives which may be synthetic (citric acid, ascorbic acid, ...) or natural; the latter being used at household level, such as lemon juice or vinegar. The reduction of water occurs instead by sequestering substances, namely that attract water by osmosis dell'alimenti outside, such as salt and sugar, which are essential to combat microbial contamination because many microorganisms malsopportono high concentrations of salt or sugar.
Among the methods that lead to acidification of the product include products preserved with vinegar and oil, a method mainly used for vegetables and some fish, especially within the home; with regard to the oil, however, its function is not of acidulant but is often associated with the acidification process, through the cooking of the vegetables in vinegar and then covered with oil; in this case therefore its function becomes of insulating, conagra foods russellville ar in fact having conagra foods russellville ar a fat matrix creates a barrier that does not allow microorganisms present in the air and air to enter the same