共查询到11条相似文献,搜索用时 78 毫秒
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卷烟烟支化学成分的因子分析 总被引:3,自引:0,他引:3
采用因子分析和关联度分析法,研究了烟支化学成分与烟气化学成分(总粒相物、烟气烟碱、焦油和一氧化碳)的关系.结果表明,将总糖、总氮、总碱、还原糖、氯、钾、蛋白质7种烟支化学成分划分为有意义的糖因子、氮因子、碱因子和钾因子,其中碱因子和钾因子是对烟气化学成分影响较大的两个潜在因子,该4因子模型解释了试验数据总方差的98.64%. 相似文献
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以克东腐乳为研究对象,对克东腐乳后酵生产过程中化学组分的变化进行监测分析,揭示克东腐乳生产过程中化学组分的变化规律。结果表明,在腐乳后酵阶段,腐乳坯粗蛋白、粗脂肪含量随时间增加呈显著下降趋势(p<0.05);汤汁中粗蛋白、游离脂肪酸含量随时间增加显著上升(p<0.05);腐乳坯及汤汁中游离氨基酸态氮、总酸含量随时间增加显著上升(p<0.05);腐乳坯中还原糖含量随时间增加显著上升(p<0.05),而汤汁中还原糖含量总体呈现上升趋势,但数据具有一定的波动性;腐乳坯及汤汁pH呈显著下降趋势;食盐含量变化不显著,而水分含量变化显著(p<0.05)。本研究为其腐乳品质的提高、工艺的改进提供了一定的理论指导。 相似文献
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亚麻脱胶后纤维的纵向结构和强力的研究 总被引:4,自引:2,他引:4
采用新的方法对亚麻进行浸渍,并探讨了浸渍后的亚麻的纵向结构和强力,从扫描电镜中发现纤维有支化现象.分析了亚麻在加工的不同阶段中强力产生差异的原因。 相似文献
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采用烧瓶振荡法分别研究了不同加工阶段的亚麻纤维对大肠杆菌、金黄色葡萄球菌、枯草芽孢杆菌和酵母菌的抑菌特性。结果表明:亚麻纤维对酵母菌的抑菌率最高,对大肠杆菌和金黄色葡萄球菌次之,对枯草芽孢杆菌的抑菌率最低。随亚麻纤维加工处理的深入,亚麻原麻、打成麻和亚麻织物的抑菌率依次降低,由此推测出亚麻纤维的抑菌成分存在于胶质中。 相似文献
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The objective is to explore the feasibility of ultrasound technology for quantitative analysis of wool in blended fabrics with chemical dissolution. Two varieties of mixture fabric with wool content of 45.1 and 16.7% were employed and were dissolved in solution of sodium hypochlorite with ultrasound assistance at different frequencies of 20, 28 and 40 kHz. By statistical method, the data for both blends indicated that there were no significant difference among the three ultrasound frequencies when applied to textile quantitative chemical analysis. For evaluation of ultrasound reliability, two insoluble materials were dissolved in sodium hypochlorite. Relative errors showed that ultrasound has little impact on the quality of insoluble fibers as well as mechanical stirring. Compared with mechanical agitation, wool was dissolved completely in a short time and at low liquor ratio when assisted with ultrasound. The results suggested that it was feasible to quantitatively analyze the wool in blended fabrics with chemical dissolution by ultrasound technology. 相似文献