Table 2 summarizes the compositional change of corn stover following pretreatment.
A central composite design was used to reduce the total number of experiments needed to explore the relationship between pretreatment condition and compositional change of pretreated corn stover, as well as its glucan/xylan conversion.
Under the same resource allocation (pasture plus supplement), a simple change in timing of corn silage feeding (9 rather than 1 h before an orchardgrass herbage meal) may alter ruminal fermentation pattern.
The effects of ATSE pretreatment under different conditions on glucan, xylan and lignin content of the pretreated corn stover are shown in Figure 2, which presents that ATSE pretreatment can drastically change the composition of corn stover.
The prices volatility and changes in the availability of corn and soybean meal have spurred interest in using other feed ingredients produced in large scale (Ravindran, 2013b).
Increasing the efficiency of starch and oil extraction from the corn grain, resulting in changes in chemical composition of corn coproducts, present a challenge to estimate their nutritional value (Gutierrez et al., 2014).
In this research, the effects of key parameters (alkali charge and heat preservation after extrusion) of ATSE pretreatment on the composition changes and enzymatic digestibility of corn stover were investigated, based on the experimental data from pilot trial.
Ten days later, the pH values of glucose or cellobiose based mediums without urea addition dropped to approximately 2.5; the pH values of glucose or cellobiose based mediums with urea addition hardly changed; the pH values of corn stover + wheat bran based mediums with and without urea addition were 7.1 and 6.0, respectively, after 10-day cultivation.
Nixtamalization also changes the flavor and aroma of corn in ways that are addictive and indelible but almost impossible to describe.
The characteristics of biomass surface and cell wall, biomass crystallinity, and chemical structure changes of H-AFEX-treated corn stalk were determined by digital microscope system, X-ray diffraction and Fourier transform infrared spectroscopy (FTIR), respectively.
