烟草废弃物与烟草薄片化学成分比较研究

发布时间：2018-10-11 10:06

【摘要】：本文以烟草废弃物制备烟草薄片综合利用烟草剩余原料减少固废排放为背景,以烟草行业标准中的烟草内在质量指标为基础,从环境工程与分析化学的角度对烟草废弃物与烟草薄片化学成分与含量进行了初步研究,以期提高烟草原料利用率,旨在为更好的利用烟草废弃物和烟草剩余原料、减少固废排放保护环境,为制作适合我国国内消费市场卷烟产品的开发提供参考,为烟草企业今后调拨原料和制作工艺的改进提供理论参考和技术支持。主要内容包括以下三个方面。首先,确定了烟草细胞壁物质、全纤维素、木质素的制备测定方法。结果显示,烟草废弃物制备薄片前后的烟草样品中,烟梗、烟末、混合原料和烟草薄片中均含有相当多的细胞壁物质、全纤维素和少量的木质素,但各样品中的含量却有很大差别。在细胞壁物质和全纤维素含量方面,烟梗混料烟末烟草薄片：在木质素的含量方面,烟梗混料烟草薄片烟末。其次,采用超临界C02流体技术萃取和光度法分别测定了烟梗、烟末、混合原料和烟草薄片中的烟碱。超临界条件如下：体积分数80%的乙醇作为夹带剂,压强30 MP,温度50℃,连续萃取两次,每次3小时。然后利用烟碱在259 nm波长下有最大吸收峰作标准曲线测样品中烟碱含量,结果显示,烟碱在1.273-63.650μg/mL浓度范围内具有良好的线性关系,线性方程为Y=0.00718+0.0181X,r2=0.9992。其中烟末中烟碱含量为1.189%,混料中烟碱含量为0.788%,烟草薄片中烟碱含量为0.670%,烟梗中烟碱含量为0.462%。最后,比较了烟草废弃物与烟草薄片中性致香物质的含量变化,采用同时蒸馏萃取法(SDE)提取烟草致香物质,并利用GC/MS技术进行定性和定量分析。结果共鉴定出22种烟草致香成分,主要包括：烃(2种)、醛(4种)、酮(10种)、醇(3种)、酯(1种)、杂环类(2种)。各烟草样品中都含有苯甲醛、苯甲醇、糠醛、茄酮、p-大马酮、香叶基丙酮、巨豆三烯酮等烟草中的关键性致香成分,但相对含量有所不同。其中,烟草薄片中致香物质总量和各成分(除苯乙醛,茄酮等)含量最高,烟末次之,混合原料再次之,烟梗中最低,并且烟草薄片中巨豆三烯酮的含量明显增高。
[Abstract]:In this paper, based on the tobacco industry standard, tobacco quality index is used to reduce solid waste emission under the background of tobacco waste preparation and comprehensive utilization of tobacco surplus raw materials. In this paper, the chemical composition and content of tobacco waste and tobacco flakes were studied from the point of view of environmental engineering and analytical chemistry, in order to improve the utilization rate of tobacco raw materials and to make better use of tobacco wastes and tobacco surplus raw materials. To reduce solid waste emissions and protect the environment, to provide a reference for the development of cigarette products suitable for our domestic consumer market, and to provide theoretical reference and technical support for tobacco enterprises to allocate raw materials and improve the manufacturing process in the future. The main content includes the following three aspects. Firstly, the preparation and determination method of tobacco cell wall substance, total cellulose and lignin were determined. The results showed that the tobacco samples before and after the tobacco waste preparation, the stem, the tobacco powder, the mixed raw materials and the tobacco flakes all contained quite a lot of cell wall substances, total cellulose and a small amount of lignin. However, the contents of the samples vary greatly. In terms of cell wall matter and total cellulose content, tobacco stem mixture tobacco flakes and tobacco flakes in lignin content. Secondly, the nicotine in tobacco stem, tobacco powder, mixed raw material and tobacco flake were determined by supercritical fluid extraction and spectrophotometry. The supercritical conditions are as follows: ethanol with 80% volume fraction is used as entrainer, pressure is 30 MP, and temperature is 50 鈩，

本文编号：2263798