和面及揉面方式对冷冻熟面品质的影响

为研究不同和面方式(真空、普通和手工)以及不同揉面方式(机器揉面、手工揉面和不揉面)对冷冻熟面蒸煮和质构特性的影响,采用低场核磁技术分析加工方法对面条中水分状态的影响,并通过高效液相色谱图分析面条内部蛋白质的变化。结果显示:采用真空和面的冷冻熟面质构性质和蒸煮特性最好,深层次结合水比例高,SDS(十二烷基硫酸钠)蛋白可提取率低,说明真空和面可以促进面筋蛋白的交联,使面筋形成更加充分均匀,与水分的结合更加紧密;揉面过程尤其是手工揉面可以使冷冻熟面的蒸煮特性和质构性质提高,使深层次结合水含量升高,SDS蛋白可提取率降低,说明揉面可以促进面筋蛋白与水的结合,使面筋蛋白形成更加充分。

Effects of different mixing and kneading methods on the quality of frozen cooked noodles

In this paper, the effect of different mixing (vacuum, conventional and manual) and kneading (machine kneading, hand kneading and non-kneading) methods on the quality of frozen cooked noodles were studied. The different processing methods on the cooking and texture properties of the frozen cooked noodle were investigated, and by NMR analyzed the water changes, use SE-HPLC to analyze the changes in protein. The results showed that the frozen cooked noodlemixed in vacuum condition had the best texture and cooking properties, the highest percentage of A₂₁ and the lowest SDS extractability. It showed that vacuum condition could promote the cross-linking of gluten protein, make the gluten more continue and evenly, and combined with water more tightly; kneading process especially manual kneading could make the noodle with better cooking and texture properties, and the higher percentage of A₂₁, reduced the SDS extractability, showed that kneading specially by hand could make the gluten more complete and promote the combination of gluten with water.