范文编号:ZY120 范文字数:13096,页数:24 摘 要:本课题以产色素真菌为材料,通过菌株的筛选得到高产色素菌株, 并对其各项理化性质及其色素提取工艺进行研究;运用液态发酵法生产红色素,并对红曲霉的培养基条件进行优化。确定红色素的最大吸收峰在505nm处,红曲霉最佳发酵天数为6~7天,适宜的培养基配方为: 大米粉9 % , NaNO3 0. 2 % , KH2 PO4 0.1 % , MgSO4 0. 2 %。在红色素的稳定性研究中发现,红色素在常温条件下是比较稳定的,pH值在5~7之间对红色素稳定性的影响是比较微弱的,偏于极端的pH值对红色素稳定性的影响是比较大的。室内室外光照对红色素稳定性影响均不大。红色素稳定性不受常见金属离子的影响。防腐剂对红色素的影响不明显,并且不受浓度的影响。 Abstract:The fungus is subject to production of the pigment material,,through high-yield strains of pigmented strains screened,,and their various physical and chemical properties of pigment extraction technology research to the further development of the fungal pigment provide the scientific basis。 This paper describes the chemical composition of red pigment and its general nature,by liquid fermentation of Monascus red pigment production media studies to determine the red pigment has a maximum absorption peak at 505nm Department, Fermentation Monascus best days to 6~7 days,the appropriate medium for: rice flour 9%, NaNO3 0. 2%, KH2 PO4 0.1%, MgSO4 0. 2%. Stability of the red pigment found in red pigment at room temperature is relatively stable under the conditions,pH value of between 5 to 7 effects on the red pigment is relatively weak,biased towards extreme pH values of the red pigment stability is relatively large.。Indoor and outdoor effects of light on red pigment are not big.。Red pigment from the impact of common metal ions。Preservatives had no significant effect on red pigment,and not concentration。 目 录 红色素的制备及性质的研究相关范文 |
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