第137章 臭玥玥(第4 / 4页)
最初,材料买回来后,苏阳先挑选颜色一致、颗粒饱满的蓝莓鲜果果实置于冰箱中冻藏,然后请张一洲帮忙将合格的实验蓝莓用食品搅拌器打浆至细腻糊状,再次放回冰箱中冷冻。
江清妍的实验课题申请成功后,苏阳才将早准备好的材料拿来海大,把冷冻果浆置于真空冷冻干燥机中干燥24小时,再让江清妍用微型植物粉碎机把干品磨成粒度为实验合适目的粉末。
这一步骤在很多学生实验中往往会被忽略,最后造成实验结果偏差较大,所以苏阳特别交代了一定要使用避光的干燥器皿保存蓝莓干粉,以备后续试验使用。
植物性物料萃取是一个复杂的非稳态、非平衡的传热传质过程,看了一会儿小妮子的工作并无差错,苏阳才看似无心随口说了一句:“那啥,你俩对高斯方程有了解吗?”
在微波辅助萃取过程中,萃取温度和萃取时间对花青素萃取量的函数关系符合Gaussia
方程。
因为心疼自己未来媳妇儿,不想让江清妍投入大量精力去无谓的实验中,苏阳今天过来专门卖了个“破绽”。
其目的很简单。
仅此一点,狗东西可以帮江清妍她俩节省一半以上的数据处理时间。
与传统的热浸提相比,微波萃取能够强化花青素向溶剂的扩散,因而获得较高的得率。但目前来看,小妮子想要取得成功,还有很长一段时间的路走。
毕竟这个课题目前在共和国内已经属高端学术实验了,即使再过几十年,不太努力的硕士生也未必能在这项科研上取得成果。
又看了一会儿俩人的工作,苏阳觉得自己是不是对江清妍有点拔苗助长了,眼瞅着小妮子时而蹙眉,时而奋笔直书,狗东西感觉好心疼。
走到宁玥玥身旁,苏阳拿起纸笔刷刷写下两段话。
使用微波辅助萃取蓝莓花青素,萃取温度和时间均对花青素萃取率有显著影响,选择合适的温度和萃取时间有利于提高花青素萃取率;微波辐射加热有利于提高萃取液抗氧化性,在一定温度和时间范围内,萃取液清除自由基能力和花青素含量存在显著的正相关性。
柠檬酸酸化乙醇微波辅助萃取蓝莓花青素最优工艺参数为:萃取温度60℃,萃取时间6mi
,柠檬酸溶液浓度70g/L,酸醇比为2:1,该工艺条件下花青素萃取率最高为85.42%,DPPH自由基清除率最高为93.02%,总抗氧化能力吸光值为0.56。所以利用柠檬酸酸化乙醇用于微波辅助萃取蓝莓花青素,可以有效保护花青素结构,提高花青素热稳定性。
看完苏阳写的两段话,宁玥玥已经诧异的嘴都合不拢。
好男人呀,爱了爱了!
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