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mengfanbo金蟲 (正式寫手)
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[求助]
求翻譯一段摘要,急。。。
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| 本課題研究以甘薯渣為原料,采用乳酸菌和黑曲霉混合菌為發(fā)酵菌種,以發(fā)酵發(fā)酵時間、接種量及料液比對水不溶性膳食纖維(IDF)提取率的影響為考察指標,通過單因素試驗和正交試驗優(yōu)化微生物發(fā)酵法制取甘薯渣膳食纖維的工藝。結(jié)果顯示:乳酸菌發(fā)酵制取甘薯渣膳食纖維的最佳工藝條件為:發(fā)酵時間20h、接種量1%、料液比1:10;黑曲霉發(fā)酵制取甘薯渣膳食纖維的最佳工藝條件為:發(fā)酵時間96h、接種量5%、料液比1:40。所制甘薯渣膳食纖維素的膨脹力、持水力分別為2.8mL/g、4.33g/g,與原料相比膳食纖維的純度和理化性質(zhì)均得到一定提高。微生物發(fā)酵法制備膳食纖維的同時能有效提高其品質(zhì)指標,是一種較好的高品質(zhì)膳食纖維制備方法。 |
金蟲 (正式寫手)
金蟲 (正式寫手)
| 本論文以甘薯渣為原料,采用乳酸菌、黑曲霉為發(fā)酵菌種,考察發(fā)酵時間、接種量及料液比對水不溶性膳食纖維(IDF)提取率的影響,通過單因素試驗和正交試驗優(yōu)化微生物發(fā)酵法制取甘薯渣膳食纖維的工藝。研究結(jié)果表明:乳酸菌發(fā)酵制取甘薯渣膳食纖維的最佳工藝條件為:發(fā)酵時間20h、接種量1%、料液比1:10,在此條件下IDF的提取率為12%;黑曲霉發(fā)酵制取甘薯渣膳食纖維的最佳工藝條件為:發(fā)酵時間96h、接種量5%、料液比1:40,在此條件下IDF的提取率為20%。所制甘薯渣膳食纖維素的膨脹力和持水力分別為2.8mL/g、4.33g/g,與原料相比膳食纖維的膨脹力、持水力分別提高了75%、34.5%。微生物發(fā)酵法制備膳食纖維的同時能有效提高其品質(zhì)指標,為生產(chǎn)中大規(guī)模制備甘薯渣膳食纖維提供一定的理論依據(jù)。 |
金蟲 (正式寫手)
鐵桿木蟲 (小有名氣)
| In this article the sweetpotato residue was chosen as raw material while the lactobacillus and the Aspergillus niger performed as the Fermentation Strains. The effects of fermentation time, inoculation quantity and ratio of material to liquid on extract rate of insoluble dietary fiber were investigated. In addition, a single factor experiment and an orthogonal experiment were carried out to optimize the preparation process of sweetpotato residue dietary fiber conducted by a microbe fermentation method.The results showed that 20 hours for fermentation, 1% quantity for inoculation and 1to 10 for the ratio of material to liquid could be concluded as the optimal process conditions of lactobacillus fermentation method. And the extract rate of IDF under these conditions was 12%. Besides above, the optimal process conditions of Aspergillus niger fermentation method were also determined and depicted as 96 hours, 5% and 1to 40 for fermentation, quantity for inoculation and ratio of material to liquid respectively. A 20% extract rate could be obtained within these conditions. The swelling force and the water-retaining capacity of the prepared sweetpotato dietary fiber were 2.8mL/g and 4.33g/g respectively of which the numbers were improved by 75% and 34.5 respectively compared with that of materials. In conclusion, not only the quality index of sweetpotato residue dietary fiber could be improved by a microbe fermentation method but also theoretical supports could be available for large scale preparation of it. |

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