4. Conclusions
Sweet potato, a crop that is rich in starch, is a promising material
for ethanol production. In ethanol manufacture, energy efficiency,
fermentation residue quantity and production costs are different
for different varieties of sweet potato as the raw material. Ensuring
the appropriateness of a variety of sweet potato for ethanol
production is essential for the ethanol production industry. An
exclusive evaluation system to assess the potential of the sweet
potato for ethanol production should be established as soon as
possible. In this study, we found that the high content of
fermentable sugar and low content of fiber in sweet potato makes it
an ideal crop to achieve low viscosity in ethanol production.
In this work, among the 10 strains tested, the sweet potato
strains NS 007 and SS 19 had less feedstock consumption, the least
land occupation, and the highest level and speed of ethanol output
per unit area as well as a lower viscosity of fermentation culture
and reduced fermentation waste residue. Although they did not
have the lowest viscosity of fermentation cultures or the least
fermentationwaste residue, these strains could be used for ethanol
production and harvested after growing for 130 days or act as
parent crops to obtain hybrids that have ideal characteristics for
ethanol production
4. Conclusions
Sweet potato, a crop that is rich in starch, is a promising material
for ethanol production. In ethanol manufacture, energy efficiency,
fermentation residue quantity and production costs are different
for different varieties of sweet potato as the raw material. Ensuring
the appropriateness of a variety of sweet potato for ethanol
production is essential for the ethanol production industry. An
exclusive evaluation system to assess the potential of the sweet
potato for ethanol production should be established as soon as
possible. In this study, we found that the high content of
fermentable sugar and low content of fiber in sweet potato makes it
an ideal crop to achieve low viscosity in ethanol production.
In this work, among the 10 strains tested, the sweet potato
strains NS 007 and SS 19 had less feedstock consumption, the least
land occupation, and the highest level and speed of ethanol output
per unit area as well as a lower viscosity of fermentation culture
and reduced fermentation waste residue. Although they did not
have the lowest viscosity of fermentation cultures or the least
fermentationwaste residue, these strains could be used for ethanol
production and harvested after growing for 130 days or act as
parent crops to obtain hybrids that have ideal characteristics for
ethanol production
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