| 摘要 |
The invention involves a whey protein product derived from sweet whey by anion exchange which is acid heat stable and/or deplete in glyco-macro-peptide (GMP), and methods of producing such a product. The method involves taking a sweet whey stream, acidified the stream to a pH in the range substantially 4 to 6, subjecting the acidified stream to anion exchange and collecting the non-bound protein stream. The preferred product has absorbence at 610nm of less than or equal to 0.100 AU/cm after it has been heated at 60-80 DEG C, pH 3.6-3.8 for 20 minutes, and with a protein concentration of 4.8-5 %. The preferred product also has a GMP content that is less than the content of the starting whey stream, and preferably no more than 15 % of the total protein content. More preferably the GMP content may be no more than 3 % of the total protein content. The product has particular application as protein fortification for low pH beverages. |
