摘要
为实现烟草中酸性洗涤纤维(ADF)和酸洗木质素(ADL)的同时测定,利用范氏洗涤法在ADL分析步骤中可得到未经灰分校正的ADF测定值这一特点,研究了灰分校正对不同类型烟草样品中ADF测定结果的影响及ADF和ADL中残余硅酸盐量的相互关系。结果表明:1ADF中硅酸盐量与样品中的灰分及ADL中硅酸盐量均极显著正相关。2对除烤烟外的部分高灰分量类型烟草样品,ADF中的硅酸盐残余量会对结果造成过高的正偏差,但利用ADL中硅酸盐的量对未经灰分校正的ADF值进行校正,即可使不同类型烟草样品中ADF和纤维素分析的相对偏差控制在5%以内,无需对ADF进行灰化破坏,实现了ADF和ADL的同时分析,极大地提高了分析效率。
In order to determine the acid detergent fiber （ADF） and acid detergent lignin （ADL） in tobacco simultaneously, and taking account of that the ADF value inclusive of ash could be obtained during the ADL analyzing process of Van Soest method, the influences of ash correction on the measurement of ADF in tobacco samples of different types were investigated and the relationship between the residual silicate contents in ADF and ADL was studied. The results showed that： 1） The silicate content in ADF extremely significantly positively correlated to the ash content in samples and the silicate content in ADL. 2） For tobacco samples of high ash content, excluding flue-cured tobacco, the residual silicate would create bigger positive deviations in ADF determination. However, a relative deviation of less than 5% could be achieved via correcting the original measurement in said ADL analyzing. The analysis efficiency was improved remarkably by achieving the simultaneous determination of ADF and ADL dispensing with ADF ashing.
出处
《烟草科技》
EI
CAS
CSCD
北大核心
2015年第2期58-62,共5页
Tobacco Science & Technology
基金
中国科学院2011年度"西部之光"人才培养计划项目"贵州烟叶本香主要香气物质研究与开发"(2011-180)
贵州省烟草公司重点科技计划项目"贵州烟叶中性致香物质研究"(2013-07)
