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保健型花生奶茶的研制 总被引:4,自引:0,他引:4
以花生米和茶叶为原料,开发出一种柔和爽口、高营养、纯天然的保健型花生奶茶饮料,以适应市场变化和人们对饮料产品的不同需求。 相似文献
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Inducing expression and the reaction characteristic of nitrile hydratase (NHase) from Rhodococcus sp.SHZ-1 were investigated. The results showed that the expression of NHase was greatly enhanced with the cooperation of acrylonitrile and ammonium chloride as inducer in the medium and the specific activity of NHase was increased of 44%. Then the temperature, pH, concentration of acrylonitrile and acrylamide were evaluated, which affected the activity and reaction characteristic of NHase. It was found that the temperature and concentration of acrylamide were the most important factors for the catalyzation of NHase. The optimal catalysis temperature of NHase from Rhodococcus sp. SHZ-1 was 30℃, and the activation energy of the hydration of NHase was 90.2kJ·mol-1 in the temperature range from 5℃ to 30℃. Km of NHase was 0.095mol.L-1 using acrylonitrile(AN)as substrate, and NHase activity was inhibited seriously when acrylonitrile concentration was up to 40g·L-1, the substrate inhibition constant Ki is 0.283mol·L-1. Moreover, the NHase from Rhodococcus sp. SHZ-1 had very strong tolerance to acrylamide, in which the final concentration of acrylamide reached to 642g·L-1 and the residual activity of NHase still maintained 8.6% of the initial enzyme activity. 相似文献
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在反应性乳化剂SE-10N存在下,采用预乳化半连续种子乳液聚合工艺合成了无皂纳米TiO2/苯丙复合乳液,通过正交实验优化了合成工艺条件,并对复合乳液的性能进行了测试。结果表明,所制得的复合乳液稳定,其涂膜耐水性和硬度均优于同组成的有皂复合乳液,涂膜铅笔硬度可达到2H级,且纳米TiO2的加入提高了无皂苯丙乳液涂膜的耐热性。对复合乳液进行透射电镜和动态光散射分析,结果表明无皂复合乳液乳胶粒的平均粒径为80 nm,且具有以纳米TiO2为核、聚合物为壳的异常型核/壳结构。 相似文献
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由于经济上的原因,大多数高温气冷堆(HTR)系统都是慢化不充分的。当水或蒸汽事故进入堆芯时(如蒸汽发生器管道破裂)会引起系统反应性增加和控制棒价值减小,这将危及堆的安全性。用加水来进行进水实验对大多数HTR堆芯结构是不可行的,因为堆芯进水量难以控制,进水后要从石墨中把水除去很困难,并且从安全考虑也不合适。在堆芯插入聚乙烯(CH2)棒可以模拟球床堆芯进水的反应性变化。插入不同直径和不同数量的聚乙烯棒可以模拟不同的进水量。 相似文献
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结合10MW高温气冷实验堆核蒸汽供给系统的控制系统设计,介绍了适合于高温核动力核蒸汽供给系统控制的一种新方法--比值控制。仿真结果表明:比值控制使堆芯氦气出、入口温度变化在允许范围内,主蒸汽温度维持为给定值。 相似文献
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核裂变法是通过测量中子进行裂变率测量的重要方法.常用于热中子测量的裂变室有235U裂变室和239Pu裂变室,快中子测量可以用238U、232Th和237Np等裂变室.通常用于裂变室的可裂变核素是采用同位素分离方法或人工方法得到的,其中含有少量其他核素杂质.实验测量表明,少量能发生热裂变的杂质对快中子的测量有很大影响。利用热裂变修正方法和裂变室包镉方法可以消除这种影响。 相似文献