who discovered salt

The rest (68%) is used for manufacturing and other industrial processes,[74] and sodium chloride is one of the largest inorganic raw materials used by volume. Settlements grew along these roads, but as the Human diet shifted from salty game to grain, more salt was needed to supplement the diet and so more innovative methods for obtaining salt originated. US iodized salt contains 46–77 ppm (parts per million), whereas in the UK the iodine content of iodized salt is recommended to be 10–22 ppm. The inhospitable Sahara desert is the largest source of rock salt, which is obtained from surface deposits caused by the drying out process, or from rocks in relatively shallow mines where salt naturally forms into plates. In traditional Korean cuisine, so-called "bamboo salt" is prepared by roasting salt[52] in a bamboo container plugged with mud at both ends. As crystals of salt formed, these would be raked out and more brine added. Salt is extracted from underground beds either by mining or by solution mining using water to dissolve the salt. [95] Salt is mandatory in the rite of the Tridentine Mass. [84] Some salt is produced using the Alberger process, which involves vacuum pan evaporation combined with the seeding of the solution with cubic crystals, and produces a grainy-type flake. This change coincided with a change from wood to coal for the purpose of heating the brine. Schweitzer, Albert. The history of the relationship between salt and man started with animals that created paths whilst looking for salt, people followed these paths and they eventually became roads. Settlers reported that Native Americans made salt at Kanawha, West Virginia before 1755 by boiling brine from salt springs. It is customary to spread some salt over the bread or to dip the bread in a little salt when passing the bread around the table after the Kiddush. It is also believed to cleanse an area of harmful or negative energies. When the judge Abimelech destroyed the city of Shechem, he is said to have "sown salt on it," probably as a curse on anyone who would re-inhabit it (Judges 9:45). Caravans consisting of as many as forty thousand camels traversed four hundred miles of the Sahara bearing salt to inland markets in the Sahel, sometimes trading salt for slaves: Timbuktu was a noted salt and slave market.[10]. All through history, the availability of salt has been pivotal to civilization. Salt evaporation ponds are filled from the ocean and salt crystals can be harvested as the water dries up. In its pure form, it has a silver-white color. [1] The search for oil in the late 19th and early 20th centuries used the technology and methods pioneered by salt miners, even to the degree that they looked for oil where salt domes were located.[1]. In either case, the salt may be purified by mechanical evaporation of brine. Louis Daguerre discovered that he could make the image stay by placing the plate in salt water. [14] Salt was very important to Europe because it was hard to trade with Africa and they needed to produce it themselves. She has also been nominated for a Best Shortform Science Writing award by the Best Shortform Science Writing Project. Evaporation can either be solar evaporation[17] or using some heating device. The identities and amounts of additives vary widely from country to country. [50] The refined salt industry cites scientific studies saying that raw sea and rock salts do not contain enough iodine salts to prevent iodine deficiency diseases. [81] A major source of salt is seawater, which has a salinity of approximately 3.5%. Aside from being a contributing factor in the development of civilization, salt was also used in the military practice of salting the earth by various peoples, beginning with the Assyrians. Delicacies like our modern-day Parma hams, gravlax, bresaola and baccala are all the result of salt curing. Indiana University Press. These include its use as a mordant in textile dying, to regenerate resins in water softening, for the tanning of hides, the preservation of meat and fish and the canning of meat and vegetables.

FACT CHECK: We strive for accuracy and fairness. It is one of the most common elements on the planet and is part of multiple reactions. The Egyptians were bartering salted fish with some products from the Phoenicians in the year 2800 B.C. [97] To preserve the covenant between their people and God, Jews dip the Sabbath bread in salt. In 1807, he used electrolysis to remove this element from melted caustic soda. Sir Humphry Davy was able to discover sodium (Na) in the laboratory. We can’t make salt in our own bodies, so humans have always had to look to their environments to fill the need. Although mining salt was generally more expensive than extracting it from brine via solar evaporation of seawater, the introduction of this new source reduced the price of salt due to a reduction of monopolization. Learn more about salt in this article. [73], Only about 6% of the salt manufactured in the world is used in food. [65][67] A low sodium diet results in a greater improvement in blood pressure in people with hypertension. It can be useful for brining, bread or pretzel making and as a scrubbing agent when combined with oil.[54]. Traditionally, this was done in shallow open pans which were heated to increase the rate of evaporation. A typical iron source is ferrous fumarate. [57] In its place, condiments such as soy sauce, fish sauce and oyster sauce tend to have a high sodium content and fill a similar role to table salt in western cultures. [88] The ancient Egyptians, Greeks and Romans invoked their gods with offerings of salt and water and some people think this to be the origin of Holy Water in the Christian faith. http://www.nhlbi.nih.gov/hbp/prevent/prevent.htm, "Problems With Electrolyte Balance." The salt is dug out by the room and pillar method, where about half the material is left in place to support the upper levels. [1] High-quality rock salt was cut in medieval Transylvania, Maramureş and Southern Poland (Wieliczka).

The Roman soldiers monthly allowance was called “salarium” (“sal” being the Latin word for salt).

[40] Iodine deficiency affects about two billion people around the world and is the leading preventable cause of mental retardation. Being highly soluble in water, salt is leached out of the rocks and ends up in salty sea water. In the correct climate (one for which the ratio of evaporation to rainfall is suitably high) it is possible to use solar evaporation of sea water to produce salt. Both the European Union and the United States Food and Drug Administration permitted the use of aluminium in the latter two compounds. Moorish traders in the Middle East traded salt for gold, as well as salt and spices from Asia to Europe and even from Africa to America. [93] In Shinto, Shio (塩, lit. You consent to our cookies if you continue to use our website. [85] The Ayoreo, an indigenous group from the Paraguayan Chaco, obtain their salt from the ash produced by burning the timber of the Indian salt tree (Maytenus vitis-idaea) and other trees.

[61] The high level of sodium in many processed foods has a major impact on the total amount consumed. [98], mineral used as ingredient, composed primarily of sodium chloride (NaCl), This article is about common table salt. Ventura County Star, July 21, 2002, Parrish, Marlene. The story of spices fills many a book, but we’re going to take an abridged look at salt and pepper over the next two weeks.

Salt comes from two main sources: sea water and the sodium chloride mineral halite (also known as rock salt).

The earliest systematic exposition of the different kinds of salts, its uses, and the methods of its extraction was published in China around 2700 BCE. This product absorbs minerals from the bamboo and the mud, and has been claimed to increase the anticlastogenic and antimutagenic properties of doenjang (a fermented bean paste). [11], In many East Asian cultures, salt is not traditionally used as a condiment. There are many other processes in which salt is involved. The salt is creamy grey and similar to the salt found in ancient seabed and salt cakes found in the United States. A small amount of dextrose may also be added to stabilize the iodine. The salt mines of Poland led to a vast kingdom in the 16th century, only to be demolished when Germans brought in sea salt (which most of the world considered superior to rock salt). Consider this rich history next time you season your food, and stay tuned for the tale of salt’s sibling—pepper—next week.

Modern production methods that boil brine can evaporate up to 1,000 times more salt than could originally be evaporated in a single day. The salt was extracted from the lake bed, a process sometimes called drag-gathering. You add it to your favorite recipes and sprinkle it on top of fresh tomatoes at the table, but you may not think about the history of salt or NaCl.

Twice a week we compile our most fascinating features and deliver them straight to you. Lana Bandoim is a freelance writer and editor. The Book of Job contains the first mention of salt as a condiment. [1][3] In adults and children with no acute illness, a decrease in the intake of sodium from the typical high levels reduces blood pressure. Sir Humphry Davy, a British chemist, discovered sodium in 1807. [48] Another additive, especially important for pregnant women, is folic acid (vitamin B9), which gives the table salt a yellow color. If one talks of those seen by the naked eye, I would say salt was the first discovered in Africa. [48], A lack of fluorine in the diet is the cause of a greatly increased incidence of dental caries. News, Business Insider, Lifescript, Healthline and many other publications. She has been a judge for the Scholastic Writing Awards from the Alliance for Young Artists & Writers. [96] Salt is used in the third item (which includes an Exorcism) of the Celtic Consecration (cf.

Sodium draws the bacteria-causing moisture out of foods, drying them and making it possible to store meat without refrigeration for extended periods of time. The apostle Paul also encouraged Christians to "let your conversation be always full of grace, seasoned with salt" (Colossians 4:6). In fact, when mummies were shipped down the Nile as cargo, they were taxed in the “salted meat” bracket.

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