Barton F E, Akin D E, Morrison W H, Ulrich A, Archibald D D
Richard B Russell Agricultural Research Center, USDA-Agricultural Research Service, PO Box 5677, Athens, Georgia 30604-567, USA.
J Agric Food Chem. 2002 Dec 18;50(26):7576-80. doi: 10.1021/jf020367i.
The conventional means of measuring the fiber content of flax is time-consuming and laborious, and the results obtained vary with the analysis technique used. The plant tissues must first be "retted", a process by which the fibers are separated from the rest of the stem, either by indigenous organisms in the soil when the stems are left in the field or by water (anerobic bacteria) or enzymatic retting. The fiber content is then determined by mechanical or manual separation. In this study, fiber content of flax stems was measured rapidly and objectively by near-infrared spectroscopy (NIRS) using whole pieces of stem in a large cell, in reflectance mode. Compared to the conventional method, the standard error of performance of the NIRS method was between 0.96 and 1.45% (dry matter basis), depending on the model and data processing used. NIRS calibrations were generated by hand separation of fiber from water-retted specimens. The water retting procedure takes several days to complete and requires considerable trained labor to complete the hand separation step. The NIRS procedure was conducted on pieces of stem to simulate measurement in the field.
测量亚麻纤维含量的传统方法既耗时又费力，而且所获得的结果会因所使用的分析技术而有所不同。首先必须对植物组织进行“沤麻”，这是一个将纤维与茎的其余部分分离的过程，当茎留在田间时可通过土壤中的本土生物来完成，也可通过水（厌氧菌）或酶法沤麻来实现。然后通过机械或手工分离来测定纤维含量。在本研究中，使用大样品池中的整段茎以反射模式通过近红外光谱法（NIRS）快速、客观地测量亚麻茎的纤维含量。与传统方法相比，根据所使用的模型和数据处理方式，NIRS方法的性能标准误差在0.96%至1.45%之间（以干物质计）。NIRS校准是通过从水沤制的样品中手工分离纤维生成的。水沤麻过程需要几天时间才能完成，并且需要大量经过培训的劳动力来完成手工分离步骤。NIRS程序是在茎段上进行的，以模拟田间测量。
