Wheat germ is a by-product of milling process which contains large amount of nutrients. The shelf life of wheat germ could improve by inactivation of destructive endogenous enzymes especially lipase and lipoxygenase. In this work, the impact of atmospheric cold plasma treatment on the inactivation of lipase and lipoxygenase enzymes of wheat germ was studied. Dielectric barrier discharge plasma was utilized to treat wheat germs. The impact of treatment time and voltage of plasma on the inactivation of lipase and lipoxygenase were investigated as well. The higher voltage and treatment time led to higher inactivation, however, the inactivation of lipase and lipoxygenase was not significant after 25 min treatment time. The DPPH radical scavenging activity and total phenolic of treated samples did not change significantly compared to controlled samples. However lipase and lipoxygenase recovered some of their loss activity during the storage. The recovery of activity was higher for lipase compared to lipoxygenase. According to the overall results, the cold plasma could be introduced as a new potential to stabilize the wheat germ and extending its shelf-life.

小麦胚芽是碾磨过程的副产品，其中包含大量营养。破坏性内源酶，尤其是脂肪酶和脂氧合酶的失活可以提高小麦胚芽的货架期。在这项工作中，研究了大气冷等离子体处理对小麦胚芽脂肪酶和脂氧合酶失活的影响。介质阻挡放电等离子体用于处理小麦胚芽。还研究了处理时间和血浆电压对脂肪酶和脂氧合酶失活的影响。较高的电压和处理时间导致较高的失活率，但是，经过25分钟的处理后，脂肪酶和脂氧合酶的失活并不明显。与对照样品相比，处理过的样品的DPPH自由基清除活性和总酚含量没有明显变化。然而，脂肪酶和脂氧合酶在储存期间恢复了它们的一些损失活性。与脂氧合酶相比，脂酶的活性恢复更高。根据总体结果，冷等离子体可以作为稳定小麦胚芽和延长其保质期的新潜力。