共查询到20条相似文献，搜索用时 171 毫秒
1.
2.
3.
大豆与大豆芽中异黄酮提取工艺研究 总被引：1，自引：0，他引：1
以乙醇为溶剂,分别以大豆、大豆芽为原料,研究了异黄酮的提取工艺,并在最佳工艺条件下探讨了两者中异黄酮的得率,试图寻找提取大豆异黄酮的最佳原料和工艺方法.结果表明温度、乙醇浓度、料液比、提取时间等'因素对异黄酮的提取均产生不同程度的影响,大豆芽中异黄酮含量比大豆中高.通过正交试验得出从大豆、大豆芽中提取异黄酮的最佳工艺条件分别为温度80℃,乙醇浓度70%,料液比120,时间2 h;温度80℃,乙醇浓度70%,料液比114,芽长6 mm,在此条件下异黄酮的提取率分别为1854、2105 μg·g-1. 相似文献
4.
5.
以乙醇作为萃取剂,采用微波法从大豆中提取异黄酮,分别考察了微波功率、乙醇的体积分数、料液比和微波辐射时间对异黄酮提取量的影响.结果表明:从大豆中提取异黄酮的最佳工艺条件:微波功率400 w、乙醇的体积分数50%、料液比1:4、微波辐射时间5 min.在最佳工艺条件下,异黄酮的提取量1.3205 mg.g-1.与传统溶剂... 相似文献
6.
以乙醇为溶剂,研究了大豆异黄酮的微波助提工艺.通过单因素和正交试验,得到微波助提的优化参数条件为:80目大豆粉,微波功率240 W、60%乙醇、微波辐射90 s、液同比10:1、提取2次.在此提取条件下大豆异黄酮得率2.72%.与常规浸提相比,微波助提工艺具有省时、节约溶剂、提取得率高等优势. 相似文献
7.
8.
9.
高纯度大豆黄苷及大豆黄素的制备 总被引：10，自引：1，他引：9
使用不同的溶剂从大豆异黄酮粗品中提取大豆黄苷.通过溶剂回流萃取及不同溶剂组合萃取实验确定了最佳的提取条件.结果表明,丙酮和乙酸乙酯的组合萃取可以将原料中大豆黄苷的含量提高2.5倍以上.最终可以得到纯度为90%的大豆黄苷产品,收率40%.产品再通过盐酸水解可以得到其相应甙元. 相似文献
10.
11.
12.
13.
对150份不同类型大豆进行了相关分析.结果表明,不同类型大豆的蛋白质、脂肪含量与异黄酮含量具有一定的相关性.野生大豆和栽培大豆的蛋白质含量与异黄酮含量具有极显著负相关关系(r=0.378**,r=0.421**).野生大豆脂肪含量与异黄酮含量具有极显著正相关的关系(r=0.362**),栽培大豆脂肪含量与异黄酮含量具有正相关关系,但相关不显著.种间杂交后代材料蛋白质、脂肪含量与异黄酮含量无显著相关性.因此,利用低蛋白质、高脂肪大豆作为杂交亲本,可增加选择几率. 相似文献
14.
15.
16.
大豆籽粒异黄酮含量的遗传效应分析 总被引：3，自引：0，他引：3
以朱军提出的混合模型方法,采用亲本、F1、F2 3个世代,分析大豆异黄酮含量的胚效应、细胞质效应和 母体效应。结果表明,大豆种子中异黄酮含量同时受到胚遗传效应和母体遗传效应的控制,并且母体效应的作用 要高于胚遗传效应。胚显性方差、母体加性方差和母体显性方差均达到显著水平。在胚和母体两套遗传体系中, 加性效应方差占总遗传方差的18. 8% ,胚显性方差与母体显性方差之和占总遗传方差的81. 2%。胚广义遗传率为 17. 3% ,母体效应的广义遗传率为33. 6%。异黄酮含量与株高和单株产量的正向基因型协方差、异黄酮含量与单 株节数的负向基因型协方差达到显著水平。异黄酮含量与株高和单株产量间主要以母体显性协方差为主,异黄酮 含量与单株节数间主要以胚加性协方差为主。 相似文献
17.
18.
19.
《Plant Production Science》2013,16(3):302-313
AbstractSoybean is the most common resource of isoflavonoid in human food. Wide development of relay strip intercropped soybean has contributed to the soybean industry in China. Due to the shading from maize, growth and grain production of soybean is reduced. However, whether soybean isoflavonoid accumulation pattern is influenced in the relay strip intercropping system is still unclear. Here, we studied the accumulation patterns of soybean isoflavones in the relay strip intercropping system and sole cropping system at the per-harvest stage. The accumulation patterns of soybean isoflavones at the postharvest stage were also studied. The results indicated that accumulation patterns of soybean isoflavones of all varieties in leaf and seed in the two systems were similar, but the trend was delayed in the relay strip intercropping system compared with the sole cropping system. During the pod filling stage, the total content of isoflavone, M-type isoflavone content, G-type isoflavone content in seed in the relay strip intercropping system were lower than those in the sole cropping system. During the after-ripening period, seed isoflavone content, M-type isoflavone content, G-type isoflavone content in seed increased in both systems, but were higher in the relay strip intercropping system. The temperature and photosynthetically active radiation were significantly lower in relay intercropping than in sole cropping, while relative humidity showed the opposite trend. Path analysis showed that total isoflavone content in leaves and seeds showed a significantly positive correlation with temperature and photosynthetically active radiation, but significantly negative correlation with relative humidity. Correlation analysis between the highest isoflavone content in sole cropping or relay intercropping seeds and agronomic traits revealed a significant positive correlation between the number of both branches and pods with total isoflavone, M-type isoflavone and G-type isoflavone in both systems. 相似文献