The sera are then purified byammoniumsulfateprecipitation or affinity purification using a peptide column.
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Addition of a neutral salt, such asammoniumsulfate, compresses the solvation layer and increases protein-protein interactions.
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The main disadvantage to the use ofammoniumsulfateis its low nitrogen content relative to ammonium nitrate, which elevates transportation costs.
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This is performed by adding increasing amounts ofammoniumsulfateand collecting the different fractions of precipitate protein.
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It is an aqueous solution of ferrousammoniumsulfate, sorbitol, sulfuric acid and xylenol orange.
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In the preliminary test, theammoniumsulfateconcentration is increased stepwise, and the precipitated protein is recovered at each stage.
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Ammoniumsulfateis commonly used as its solubility is so high that salt solutions with high ionic strength are allowed.
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The amount of ferrousammoniumsulfateadded is equivalent to the amount of excess potassium dichromate added to the original sample.
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The plant also producesammoniumsulfate, anhydrous ammonia, phenol, cresylic acid, methanol, and naphtha.
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A disadvantage of this approach is the need to dispose of theammoniumsulfatebyproduct.
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In addition,ammoniumsulfatefertilizer is produced as a byproduct from used reagents.
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The ammonia reacts with the sulfur compounds thus formed to produceammoniumsulfate, which can be used as a nitrogenous fertilizer.
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Ammoniumsulfatehas also been used in flame retardant compositions acting much like diammonium phosphate.
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With trivalent metal ions, alums such as ferricammoniumsulfateare formed.
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The salting out effect is commonly exploited in protein purification through the use ofammoniumsulfateprecipitation.
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