The effects of Ce （Ⅳ） on callus growth, anthocyanin content, and expression of anthocyanin biosynthetic genes in callus suspension cultures of Solanum tuberosum cv. Chieftain were studied by the measurement of fres...The effects of Ce （Ⅳ） on callus growth, anthocyanin content, and expression of anthocyanin biosynthetic genes in callus suspension cultures of Solanum tuberosum cv. Chieftain were studied by the measurement of fresh weight, spectrophotometric assays, and semiquantitative RT-PCR. The results indicate that 0.1 mmol·L^- 1 Ce （ Ⅳ ） can promote callus growth, increase the accumulation of anthocyanins, and enhance the expression of five anthocyanin biosynthetic genes （ CHS, F3H, F3＇5＇H, DFR, and 3 GT） most efficiently. At high concentrations of 1 mmol·L^- 1, Ce （Ⅳ） partially inhibits callus growth and at 2 mmol· L^-1 eventually lends to cell death. The results show that Ce（ Ⅳ ） can induce the expression of anthocyanin biosynthetic genes to produce and accumulate anthocyanins and increase the yield of anthocyanins.展开更多
目的利用AB-8大孔树脂结合醇沉法对紫色马铃薯花色苷的纯化工艺进行研究。方法以River John Blue基因型紫色马铃薯为原料,以浸提的方法得到紫色马铃薯花色苷粗提物,然后分别从静态吸附的角度(搅拌、上样浓度、上样pH、洗脱液浓度、洗脱...目的利用AB-8大孔树脂结合醇沉法对紫色马铃薯花色苷的纯化工艺进行研究。方法以River John Blue基因型紫色马铃薯为原料,以浸提的方法得到紫色马铃薯花色苷粗提物,然后分别从静态吸附的角度(搅拌、上样浓度、上样pH、洗脱液浓度、洗脱液pH)和动态吸附的角度(上样流速和洗脱流速)对粗提物进行了纯化工艺的研究,以吸附率、解析率和色价值作为评价指标,在此单因素实验基础上,进行正交试验分析得到最后的优化工艺条件。结果 AB-8型大孔树脂的最佳纯化条件为:搅拌,上样浓度为0.500 mg·m L-1,上样pH为2,洗脱液乙醇体积分数为70%,洗脱液pH为1,上柱吸附流速为1 m L·min^(-1),洗脱流速为1 m L·min^(-1)。在此工艺条件下,花色苷的色价值可高达75.40,比纯化前提高了8.43倍。结论此纯化工艺的方法可行性高,提高了花色苷的纯度及色价,为紫色马铃薯花色苷的市场开发及应用奠定了一定的实验基础。展开更多
基金Project Supported bythe International Cooperation Research of Jiangsu Province (BZ2003041)
文摘The effects of Ce （Ⅳ） on callus growth, anthocyanin content, and expression of anthocyanin biosynthetic genes in callus suspension cultures of Solanum tuberosum cv. Chieftain were studied by the measurement of fresh weight, spectrophotometric assays, and semiquantitative RT-PCR. The results indicate that 0.1 mmol·L^- 1 Ce （ Ⅳ ） can promote callus growth, increase the accumulation of anthocyanins, and enhance the expression of five anthocyanin biosynthetic genes （ CHS, F3H, F3＇5＇H, DFR, and 3 GT） most efficiently. At high concentrations of 1 mmol·L^- 1, Ce （Ⅳ） partially inhibits callus growth and at 2 mmol· L^-1 eventually lends to cell death. The results show that Ce（ Ⅳ ） can induce the expression of anthocyanin biosynthetic genes to produce and accumulate anthocyanins and increase the yield of anthocyanins.
文摘目的利用AB-8大孔树脂结合醇沉法对紫色马铃薯花色苷的纯化工艺进行研究。方法以River John Blue基因型紫色马铃薯为原料,以浸提的方法得到紫色马铃薯花色苷粗提物,然后分别从静态吸附的角度(搅拌、上样浓度、上样pH、洗脱液浓度、洗脱液pH)和动态吸附的角度(上样流速和洗脱流速)对粗提物进行了纯化工艺的研究,以吸附率、解析率和色价值作为评价指标,在此单因素实验基础上,进行正交试验分析得到最后的优化工艺条件。结果 AB-8型大孔树脂的最佳纯化条件为:搅拌,上样浓度为0.500 mg·m L-1,上样pH为2,洗脱液乙醇体积分数为70%,洗脱液pH为1,上柱吸附流速为1 m L·min^(-1),洗脱流速为1 m L·min^(-1)。在此工艺条件下,花色苷的色价值可高达75.40,比纯化前提高了8.43倍。结论此纯化工艺的方法可行性高,提高了花色苷的纯度及色价,为紫色马铃薯花色苷的市场开发及应用奠定了一定的实验基础。
