One method was that corn germ was separated from corn, and then maize oil was prepared by pretreatment, press, extraction and refining from corn germ.
一是从原料玉米中提取玉米胚芽，玉米胚芽经预处理、压榨、浸出得玉米毛油，毛油经精炼得精制玉米油或一级玉米油。
Technology and methods of corn germ separation and corn oil extraction and refining were systematically introduced.
介绍了玉米提胚工艺和方法；玉米胚芽油的制取和精炼工艺及生产技术。
Though it requires a more complex refining process, cellulosic ethanol requires less fossil fuels for production and results in lower greenhouse emissions than traditional corn-based ethanol.
虽然它需要一种更为复杂的提炼过程，纤维乙醇的生产需要更少的化石燃料，而且相比传统的基于玉米的乙醇生产，它的温室气体排放量更少。
Though it requires a more complex refining process, cellulosic ethanol requires less fossil fuels for production and results in lower greenhouse emissions than traditional corn-based ethanol.
虽然它需要一种更为复杂的提炼过程，纤维乙醇的生产需要更少的化石燃料，而且相比传统的基于玉米的乙醇生产，它的温室气体排放量更少。
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