Food preservative | Wikipedia audio article
Channel: wikipedia tts
Date: 2018-12-12

This is an audio version of the Wikipedia Article:
Food preservative


00:01:17 1 Traditional techniques
00:01:34 1.1 Curing
00:02:17 1.2 Cooling
00:03:15 1.3 Freezing
00:03:53 1.4 Boiling
00:04:11 1.5 Heating
00:04:31 1.6 Sugaring
00:05:36 1.7 Pickling
00:06:43 1.8 Lye
00:07:10 1.9 Canning
00:09:07 1.10 Jellying
00:10:08 1.11 Jugging
00:10:42 1.12 Burial
00:12:41 1.13 Fermentation
00:14:05 2 Modern industrial techniques
00:14:22 2.1 Pasteurization
00:15:10 2.2 Vacuum packing
00:15:45 2.3 Freeze drying
00:15:54 2.4 Artificial food additives
00:16:46 2.5 Irradiation
00:18:31 2.6 Pulsed electric field electroporation
00:19:54 2.7 Modified atmosphere
00:23:18 2.8 Nonthermal plasma
00:23:39 2.9 High-pressure food preservation
00:24:22 2.10 Biopreservation
00:25:39 2.11 Hurdle technology
00:26:56 3 See also



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SUMMARY
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Food preservation prevents the growth of microorganisms (such as yeasts), or other microorganisms (although some methods work by introducing benign bacteria or fungi to the food), as well as slowing the oxidation of fats that cause rancidity. Food preservation may also include processes that inhibit visual deterioration, such as the enzymatic browning reaction in apples after they are cut during food preparation.
Many processes designed to preserve food involve more than one food preservation method. Preserving fruit by turning it into jam, for example, involves boiling (to reduce the fruit’s moisture content and to kill bacteria, etc.), sugaring (to prevent their re-growth) and sealing within an airtight jar (to prevent recontamination). Some traditional methods of preserving food have been shown to have a lower energy input and carbon footprint, when compared to modern methods.Some methods of food preservation are known to create carcinogens. In 2015, the International Agency for Research on Cancer of the World Health Organization classified processed meat, i.e. meat that has undergone salting, curing, fermenting, and smoking, as "carcinogenic to humans".Maintaining or creating nutritional value, texture and flavor is an important aspect of food preservation.