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Preservatives can expand the shelf life of food and can lengthen the time long enough for it to be harvested, processed, sold, and kept in the consumer's home for a reasonable length of time. One of the age old techniques for food preservation, to avoid mold and fungus growth, is the process of drying out the food or dehydrating it.
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Some glues and adhesives also have a limited storage life, and will stop working in a reliable and usable manner if their safe shelf life is exceeded. Rather different is the use of a time limit for the use of items like vouchers, gift certificates and pre-paid phone cards, so that after the displayed date the voucher etc. will no longer be valid.
Common oils and fats become rancid relatively quickly if not refrigerated; replacing them with hydrogenated oils delays the onset of rancidity, increasing shelf life. This is a common approach in industrial food production , but concerns about health hazards associated with trans fats have led to their strict control in several jurisdictions. [ 2 ]
When the pasta leaves the dies it has the moisture content of 31%. The final desired moisture of the dried pasta is about 12%, in order for the pasta to be rigid and have a long storage life. The drying process is slightly different for long and short pastas, but in general, pasta is exposed to hot air to dehydrate the pasta.
A dish of spaghetti alla chitarra, a long egg pasta with a square cross-section (about 2–3 mm thick), whose name comes from the tool (the so-called chitarra, literally "guitar") this pasta is produced with, a tool which gives spaghetti its name, shape and a porous texture that allows pasta sauce to adhere well. The chitarra is a frame with a ...
The shape of the pasta depends on the shape of the perforations. Bucatini are made with a disk with tiny circular perforations, which forces the pasta dough to emerge in long tubes. The tubes are then trimmed off to the desired length and then either cooked fresh or dried. Bucatini can be made at home with a stand mixer and a pasta extruder. [8]
A traditional pasta round that is thinner than spaghetti. [47] [48] Little worms [4] [49] Campania [6] Ziti: Long, narrow hose-like tubes [28] larger than mezzani (also called mezzi ziti) or bucatini that are traditionally broken before being put to cook. [50] The addition of the word rigati (e.g. ziti rigati) denotes lines or ridges on the ...