【单选题】【消耗次数：1】
面团在搅拌时，由于空气的不断进入，使面团所含蛋白质内的( )被氧化成分子间的双硫键，从而使面筋形成了三维空间结构。
①
麦清蛋白
②
麦球蛋白
③
单硫键
④
硫氢键
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面团在搅拌时，由于空气的不断进入，使面团所含蛋白质内的硫氢键被氧化成分子间的双硫键，从而使面筋形成了( )。
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