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SCIENCE AND TECHNOLOGY OF CEREALS,OILS AND FOODS
2014年
4期
82-85
,共4页
深黄被孢霉%油脂%发酵动力学%模型
深黃被孢黴%油脂%髮酵動力學%模型
심황피포매%유지%발효동역학%모형
mortierella isabellina%oil%fermentation kinetics%model
对玉米秸秆水解液发酵产微生物油脂动力学进行研究，基于 Logistic 方程和 Luedeking -Piret 方程分别建立了微生物油脂发酵过程菌体生长和油脂合成随时间变化的数学模型，同时对试验值与模型进行了验证比较，应用气相色谱技术对微生物油脂中的不饱和脂肪酸成分进行分析。结果表明，以玉米秸秆为原料、深黄被孢霉为菌株，好氧间歇发酵，得到生物量为10．63 g/L，油脂含量为49．53％。模型模拟计算结果与试验值能较好地吻合，该模型能较好地反映玉米秸秆水解液发酵产微生物油脂发酵的过程。
對玉米秸稈水解液髮酵產微生物油脂動力學進行研究，基于 Logistic 方程和 Luedeking -Piret 方程分彆建立瞭微生物油脂髮酵過程菌體生長和油脂閤成隨時間變化的數學模型，同時對試驗值與模型進行瞭驗證比較，應用氣相色譜技術對微生物油脂中的不飽和脂肪痠成分進行分析。結果錶明，以玉米秸稈為原料、深黃被孢黴為菌株，好氧間歇髮酵，得到生物量為10．63 g/L，油脂含量為49．53％。模型模擬計算結果與試驗值能較好地吻閤，該模型能較好地反映玉米秸稈水解液髮酵產微生物油脂髮酵的過程。
대옥미갈간수해액발효산미생물유지동역학진행연구，기우 Logistic 방정화 Luedeking -Piret 방정분별건립료미생물유지발효과정균체생장화유지합성수시간변화적수학모형，동시대시험치여모형진행료험증비교，응용기상색보기술대미생물유지중적불포화지방산성분진행분석。결과표명，이옥미갈간위원료、심황피포매위균주，호양간헐발효，득도생물량위10．63 g/L，유지함량위49．53％。모형모의계산결과여시험치능교호지문합，해모형능교호지반영옥미갈간수해액발효산미생물유지발효적과정。
The dynamics of microbial oils fermented from corn stover hydrolysate was studied.The math-ematic model of thalli growth and microbial oils synthesis during the fermentation of microbial oils changed along with the time was built based on Logistic equation and Luedeking -Piret equation.The test value was validated with the model.The compositions of unsaturated fatty acid in microbial oils were analyzed by the gas chromatography.The results indicated that the corn stover was used as a raw materi-al,mortierella isabellina as a strain,after aerobic intermittent fermentation,the biomass and content of microbial oils reached 10.63 g/L and 49.53% respectively.A good coincidence between models calcula-tion values and experimental data was observed,therefore,the model equations can really reflect the process of the microbial oils fermentation.
