本文選題：復(fù)合菌種 + 副產(chǎn)物　； 參考：《北京化工大學(xué)》2015年碩士論文

【摘要】：當(dāng)前全球傳統(tǒng)的谷物和蛋白原料成本不斷上升,而利用農(nóng)作物發(fā)酵生產(chǎn)檸檬酸、賴氨酸、酒精等產(chǎn)品生產(chǎn)利潤空間有限。上述產(chǎn)品在生產(chǎn)過程中產(chǎn)生大量的副產(chǎn)品,副產(chǎn)品在單獨(dú)銷售時(shí),其市場(chǎng)價(jià)值沒有得到最好的體現(xiàn)。在生產(chǎn)檸檬酸、賴氨酸、酒精等過程中產(chǎn)生如木薯酒精糟、玉米淀粉渣、DDG、DDS、玉米漿、玉米纖維皮、濕法糖渣、硫酸銨母液/晶體等副產(chǎn)品。利用這些副產(chǎn)物為原料,通過微生物發(fā)酵技術(shù),開發(fā)微生物發(fā)酵飼料新產(chǎn)品,可以降低副產(chǎn)物原料中的纖維素含量、提高蛋白質(zhì)含量；通過有益微生物在生長代謝過程中能夠產(chǎn)生很多有益物質(zhì),如酸性蛋白酶、纖維素酶、糖化酶、維生素(尤其是B族)、氨基酸、有機(jī)酸、促生長因子等,這些物質(zhì)的產(chǎn)生能夠給有效提高動(dòng)物對(duì)飼料的消化吸收率、增強(qiáng)動(dòng)物的抗病能力,促進(jìn)動(dòng)物的生長發(fā)育,實(shí)現(xiàn)變廢為寶,為企業(yè)創(chuàng)造更高的價(jià)值。本文通過益生菌的選擇、發(fā)酵飼料原料的選擇、培養(yǎng)基的定位及生產(chǎn)工藝路線的確定,來提升副產(chǎn)品的經(jīng)濟(jì)效益,開發(fā)出經(jīng)濟(jì)價(jià)值高、營養(yǎng)豐富的飼料產(chǎn)品。通過試驗(yàn)過程的開展,在種子培養(yǎng)過程中,對(duì)原種進(jìn)行保藏、分離、篩選及再保藏,確定每一級(jí)種子培養(yǎng)的培養(yǎng)基的選擇及培養(yǎng)過程的參數(shù)；通過發(fā)酵培養(yǎng)過程的研究與優(yōu)化,確定培養(yǎng)基所使用的原輔料及工藝過程參數(shù)；通過對(duì)原輔料成本核算,確定生產(chǎn)飼料的經(jīng)濟(jì)效益。
[Abstract]:At present, the cost of traditional cereals and protein raw materials is increasing, but the profit margin of using crop fermentation to produce citric acid, lysine, alcohol and other products is limited.These products produce a large number of by-products in the production process, and the market value of the by-products is not best reflected when the by-products are sold separately.In the production of citric acid, lysine and alcohol, such as cassava alcohol grains, corn starch dregs DDG DDS, corn pulp, corn fiber husk, wet sugar residue, ammonium sulfate mother liquor / crystal and other by-products.By using these by-products as raw materials, a new product of microbial fermentation feed can be developed through microbial fermentation technology, which can reduce the cellulose content and increase the protein content in the by-product raw material.Beneficial microorganisms can produce many beneficial substances during growth and metabolism, such as acid protease, cellulase, saccharifying enzyme, vitamin (especially group B), amino acid, organic acid, growth promoting factor, etc.The production of these substances can effectively improve the digestion and absorption rate of animal feed, enhance the ability of animal disease resistance, promote the growth and development of animals, realize the transformation of waste into treasure, and create higher value for enterprises.Through the selection of probiotics, the selection of raw materials for fermented feed, the orientation of culture medium and the determination of production process route, the economic benefits of by-products were improved and feed products with high economic value and rich nutrition were developed.In the process of seed culture, the original seed was preserved, separated, screened and represerved, and the selection of culture medium and the parameters of the culture process were determined, and the research and optimization of the fermentation culture process were carried out.The raw and auxiliary materials used in the culture medium and the technological process parameters were determined, and the economic benefits of the production of feed were determined through the cost accounting of the raw and auxiliary materials.
【學(xué)位授予單位】：北京化工大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2015
【分類號(hào)】：S816.6

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