Predicting digestibility of ammonia fiber explosion (AFEX)-treated rice straw
Predicting digestibility of ammonia fiber explosion (AFEX)-treated rice straw
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DOI：
10.1385/abab:98-100:1-9:23
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发表时间：
2002-03-01
影响因子：
3
通讯作者：
Rivers, DM
中科院分区：
文献类型：
--
作者：
Gollapalli, LE;Dale, BE;Rivers, DM
通过使用几种不同的分析技术，将样品的变异性与处理的差异进行统计关联，对氨纤维爆炸(AFEX)处理的稻草的酶消化率进行了建模。木质素含量和纤维素结晶度指数对酶解的影响最大。用X射线衍射仪测定了样品的结晶度指数(CRI)，用荧光光谱和漫反射红外光谱(DRIFT)测定了样品的木质素含量。采用多元分析的方法，将不同样品的酶解结果与X射线衍射和光谱数据进行关联。主成分分析(PCA)和多元线性回归(MLR)技术不能准确预测稻草样品的消化率。酶解后24 h木糖浓度与AFEX工艺处理条件的相关性最好(R值为0.775)。
The enzymatic digestibility of ammonia fiber explosion (AFEX)-treated rice straw was modeled by statistically correlating the variability of samples to differences in treatment using several different analytical techniques. Lignin content and crystallinity index of cellulose affect enzymatic hydrolysis the most. X-ray diffraction was used to measure the crystallinity index (CrI), while fluorescence and diffuse reflectance infrared (DRIFT) spectroscopy measured the lignin content of the samples. Multivariate analysis was applied to correlate the enzymatic hydrolysis results of the various samples with X-ray diffraction and spectroscopic data. Principal component analysis (PCA) and multilinear regression (MLR) techniques did not accurately predict the digestibility of the rice straw samples. The best correlation (R value of 0.775) was found between the treatment conditions of the AFEX process and the concentration of xylose at 24 h after enzymatic hydrolysis.