Oyster Calcium

OTC Calcium carbonate Amitone, Cal-Carb Forte, Calci-Chew, Calci-Mix, Caltrate, CaltratebOO, Chooz, Dicarbosil, Florical, Maalox, Maalox Quick Dissolve, Mallamint, Mylanta, Nephro-Calci, Os-Cal 500, Oysco 500, Oyst-Cal 500, Oyster Calcium, Rolaids, Titralac, Turns, Turns Ex OTC Calcium citrate Citracal, Citracal Prenatal Rx, Cal-Citrate... 

Minerals. Supplementation of macrominerals to mminants is sometimes necessary. Calcium and phosphoms are the minerals most often supplemented in mminant diets. One or both may be deficient, and the level of one affects the utilization of the other. Limestone, 36% calcium, is commonly used as a source of supplemental calcium. Dolomite, 22% calcium oyster sheUs, 35% calcium and gypsum, 29% calcium, are sources of calcium. Bone meal, 29% calcium, 14% phosphoms dicalcium phosphate, 25—28% calcium, 18—21% phosphoms and defluorinated rock phosphate, 32% calcium, 18% phosphoms, are sources of both calcium and phosphoms. Diammonium phosphate, 25% phosphoms phosphoric acid, 32% phosphoms sodium phosphate, 22% phosphoms and sodium tripolyphosphate, 31% phosphoms, are additional sources of phosphoms (5). 

Plastics. The fastest-growing use of whiting (microcarbonate fillers) is in the plastics industry where dry, pulverized limestone is used intensively for most types of plastics. Other carbonate fillers, precipitated calcium carbonate, oyster sheU, marble, and wet-ground limestone, are also used. 

Fuel treatments have been used for very many years as an aid to improving the combustion efficiency process. Old formulations often used saw dust, wood flour, common salt, zinc sludge, ground oyster shell, and similar crude ingredients, but could still provide a dramatic effect when thrown into a fire. The metallic salts present (sodium in salt, zinc in sludge, and calcium in shell) acted as catalysts that dramatically lowered the ignition temperature of soot deposits from around 1100 °F/590 °C to only 600 °C/315 °C the fire burned vigorously and the soot disappeared. 

Calcium carbonate (CaCO ) can be in the form of an odorless crystal or powder and is one of calcium s most stable compounds, better known in its natural state as limestone, marble, chalk, calcite, oyster shells, and the minerals marl and travertine. Calcium carbonate is the source of lime and is used as a filler for many products, including paints, plastics, and foods (bread), and as an antacid. 

Carbon is, without a doubt, one of the most important elements on Earth. It is the major element found in over one million organic compounds and is the minor component in minerals such as carbonates of magnesium and calcium (e.g., limestone, marble, and dolomite), coral, and shells of oysters and clams. 

C02(g) + H20(1). Pearls are formed by oysters secreting calcium carbonate to encase foreign... 

Kim, G. H., Jeon, Y. J., Byun, H. G., Lee, Y. S., and Kim, S. K. (1998). Effect of calcium compounds from oyster shell bound fish skin gelatine peptide in calcium deficient rats. J. Korean Fish. Soc. 31,149-159. 

Fujita, T., Fukase, M., Miyamoto, H., Matasumoto, T., and Ohue, T. (1990). Increase of bone mineral density by calcium supplement with oyster shell electrolysate. Bone Miner. 11, 85-91. 

DROP PIECES OF CHALK, MARBLE, OR OYSTER SHELLS (ALL OF THEM CALCIUM CARBONATES) IN A FEW ml HYDROCHLORIC ACID. RESULT IS CALCIUM CHLORIDE AND CARBONIC ACID (WHICH BREAKS UP INTO CARBON DIOXIDE AND WATER). 

Isoenzymes III and VII have a more specialized distribution. Carbonic anhydrase III is abundant in adipocytes which use bicarbonate in fatty acid synthesis.7 Isoenzyme V is present in the mitochondrial matrix and is also abundant in both adipocytes and liver.7 8 Isoenzyme IV is a larger membrane-associated form, while VI is secreted into the saliva.10 Carbonic anhydrase has also been identified in E. coli.,11 in a methanobacterium,12 and in green plants.13 133 A 60-kDa carbonic anhydrase called nacrein is found in the organic matrix of the nacreous layer of the pearl oyster, the layer that forms aragonite (orthorhombic calcium carbonate) in the shell and in pearls.14... 

Yet another product of the sea is a huge oyster found south of the Philippine island Palawan. It is called Pinctada maxima and can weigh up to ten kilogrammes. This oyster produces a shell which is as strong as reinforced vibrated concrete. Like coral, this shell is made of calcium carbonate. The inside is covered with mother-of-pearl which cannot be digested by human bone cells. Mother-of-pearl consists for approximately 66% of calcium carbonate and for about 31% of water. The rest is conchioline, a though and homy product. 

Less is known about the availability of calcium in feedstuffs, but the level of calcium is generally so low that the bioavailability is of little consequence. The calcium in common supplementary sources such as ground limestone, oyster shell and dicalcium phosphate is highly available. Blair et ol. (1965)... 

The experiment started when the hens (Lohmann Silver) were about 25 weeks of age. During the experiment the hens had access to forage from sunrise to sunset. The control group received a pelleted feed mixture containing 184g/kg CP, 8.7g/kg lysine, 4.6g/kg methionine and 41g/kg calcium, whereas the whole wheat contained 120g/kg CP, 3.4g/kg lysine, 1.9g/kg methionine and less than lOg/kg calcium (all values on a DM basis). Feed, water, oyster shell and insoluble grit were provided ad libitum outdoors. 

Pearls are little spheres of calcium carbonate (CaC03) that form in mol-lusks (invertebrate shellfish) such as oysters, usually because of some sort of irritation. They are normally white or off-white in color, but they can have bluish or pink tints, and sometimes they are dark gray. Although many pearls form naturally, pearl production has been gready increased by the cultured pearl industry, which raises beds of oysters into which irritants are routinely introduced. The irritants are usually bits of mother-of-pearl, the lining that forms inside oyster shells. 

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