| http://www.w3.org/ns/prov#value | - 2] In different embodiments thereof, the pH is kept in the range of from about 4.0 to about 7.0, such as from about 4.5 to about 7.0, from about 5.0 to about 7.0, from about 5.5 to about 7.0, or from about 6.0 to about 7.0. [0023] In one embodiment, the antioxidant (iii) is selected from the list of: L- or D-methionine, a methionine analogue, a methionine-containing peptide, a methionine-homologue
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