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The Study of Detergency Observed by the Quartz Microbalance Method (QCM)

石英微天平法（QCM）观察去污力的研究

基本信息

批准号：
15500522
负责人：
SHIMOMURA Kumiko
金额：
$ 1.41万
依托单位：
Showa Women's University
依托单位国家：
日本
项目类别：
Grant-in-Aid for Scientific Research (C)
财政年份：
2003
资助国家：
日本
起止时间：
2003 至 2004
项目状态：
已结题

项目摘要

We have been studying the detergency processes of various soils mainly by using quartz microbalance method. The method uses the 9 MHz quartz crystal oscillator in water to measure a minute weight changes of μg order model soils attached on the gold electrode of the oscillator. Absorption of a trace amount of a substance in the soil decreases the frequency by 1Hz/ing. Removal of the soil increases the frequency to the same extent. Thus, we can measure the detergency process as swelling and the following removal of the soil with time. We had studied the removal of model protein soils by surfactants, oxidizing agents and proteases before studying the removal of lipid soils. With model lipids, we have reported the mechanism of the removal by adding alkali and surfactants.This study extends the lipid detergency study to the effects of adding lipase and oxidizing agent. The processes of removal of model lipid soils, tripalmitin, trimiristin and lard in the presence of a lipase, Lipex and ani … More onic and non-ionic surfactants, DBS and APE, respectively, were studied in a solution of pH 7 at 30゜C. Synergies of the lipase and the surfactants were observed. The removal was enhanced in the presence of the lipase and DBS at the concentrations far below the cmc, but it was suppressed above the cmc of DBS. On the other hand, the removal was enhanced in the presence of the lipase and APE at the concentrations above the cmc. The reasons for these synergies were discussed. In terms of the negative charges endowed to the lipid layer and the lipase by DBS micell, both become repulsirve. In terms of the hydrophobicity endowed to the lipid layer and the lipase by APE micell, both become attractive.As for oxidizing agent, the addition resulted in the enhanced swelling of the model soils. Afterward, the lipid soils become faster to be removed. This means that oxidizing agent attacks the lipid effectively to oxidize, resulting in the enhanced swelling of the lipid layer by increasing the hydrophilicity. Less

我们主要利用石英微天平对不同土壤的去污过程进行了研究。该方法利用9 MHz石英晶体振荡器在水中测量金电极上附着的μg级模型土壤的微小重量变化。土壤中微量物质的吸收使频率降低1赫兹/英寸。移除土壤会在相同程度上增加频率。因此，我们可以用土壤的膨胀和随时间的推移来衡量去污过程。在研究去除脂肪类土壤之前，我们先研究了表面活性剂、氧化剂和蛋白酶对模型蛋白土壤的去除。利用模型脂，我们报道了添加碱和表面活性剂的去除机理，本研究将脂肪清净性的研究扩展到添加脂肪酶和氧化剂的影响。在脂肪酶、Lipex和Ani…存在下去除模型脂类土壤、三棕榈素、三聚氰胺和猪油的过程在pH为7、温度为30゜C的溶液中，研究了较多的离子和非离子表面活性剂DBS和APE，观察到了脂肪酶和表面活性剂的协同作用。当脂肪酶和DBS的浓度远低于CMC时，脂肪酶和DBS的存在对去除有促进作用，但高于DBS的CMC时，其去除受到抑制。另一方面，当脂肪酶和APE的浓度高于CMC时，去除效果更好。讨论了产生这些协同效应的原因。就DBS胶束赋予脂肪层和脂肪酶的负电荷而言，两者都变得相斥。由于APE胶束赋予脂层和脂肪酶的疏水性，两者都变得具有吸引力，而氧化剂的加入则导致了模型土壤的膨胀率增加。之后，脂肪土壤变得更快地被清除。这意味着氧化剂有效地攻击脂质氧化，通过增加脂层的亲水性，导致脂层的膨胀增强。较少

项目成果

期刊论文数量（15）

专著数量（0）

科研奖励数量（0）

会议论文数量（0）

专利数量（0）

水晶振動子による固体脂肪汚れの洗浄過程の追跡

使用石英晶体跟踪固体脂肪污渍的清洁过程

DOI：
发表时间：
2003
期刊：
日本家政学会誌 54
影响因子：
0
作者：
下村久美子
通讯作者：
下村久美子

A Study of Detergency on the Lipid Soil

脂土去污力的研究

DOI：
发表时间：
2003
期刊：
Showa Women's University bulletin 755
影响因子：
0
作者：
下村久美子;Kumiko Shimomura;下村久美子;Kumiko Shimomura;Kumiko Shimomura;Kumiko Shimomura
通讯作者：
Kumiko Shimomura

Lipid Detergency as Observed by the Quartz Microbalance Method

通过石英微天平法观察脂质去污力