This paper reports the study of effects of treatment of lonium moltiflorum lam seeds with polyvinyl alcohol ( PVA) on their germination, growth, purification efficiency and cold resistance. 本文研究了聚乙烯醇(PVA)预处理对多花黑麦草种子的萌发、幼苗的生长、净化污水效率和抗寒性的影响。
Use of Membrane Separation Combined with Alcohol Precipitation for the Separation and Purification of Isoflavones from Low-denatured Soybean Meal 应用膜分离结合醇沉法纯化大豆异黄酮
Alcohol precipitation is an efficient method for separation and purification of xanthan gum. 醇析法是一种有效分离提纯黄原胶的方法。
For the clearance rate of tannin the purification effect from the membrane with 70000 of retain molecular weight is the best and then that from the method of alcohol precipitation, while the purification effect from the membrane with 20000 falls worse; 去除鞣质以70000膜最好,其次为醇沉,20000膜最差;
Experimental results in the simulated system of n-octane/ n-heptane/ isoamyl alcohol indicate that steam distillation could extract components of lower boiling point or higher polarity in preference, so it is possible to be applied for the cutting and purification of lavender oil. 针对正辛烷/正庚烷/异戊醇模拟体系的水蒸气蒸馏实验表明,水蒸气蒸馏能优先提取混合物中低沸点、强极性组分,可用于薰衣草油的精制和切割。
The selection of alcohol should be in accord with national edible standards and be managed by medium purification method, active carbon optimization method, potassium permanganate method and repeated steaming method. 酒精要符合国家食用标准,并采用净化介质法、活性炭法、高锰酸钾法、复蒸法处理。
The crude CEA obtained by the extraction of hepatic homogenate with perchloric acid and ethyl alcohol. Purification were carried out by sepharose 4B, Sephadex G200 gel filtration and Con A sepharose affinity chromatography. 肝转移组织制成匀浆,用过氯酸和乙醇提取得到癌胚抗原的粗制品,经sepharose4B和SephadexG-200凝胶过滤,conA琼脂糖亲和层析进行纯化。
This article introduces the preparation method of@-caryophyllene alcohol based on heavy turpentine oil via hydration, separation and purification, the product purity can reach 99.9%. 本文介绍了重质松节油经水合反应、分离提纯制备β-石竹烯醇的方法,产品纯度可达99.9%。
Distillation is one of conventional alcohol purification methods, its power is heat energy, its disadvantages are more energy consumption, great installation cost and poor economic performance. 传统的酒精提纯主要是蒸馏法,以热能为动力,存在能源消耗多、设备投资大、经济效益低等缺点。
The main contents of the study included alcohol refluxing extraction of chlorogenic acid from stems and leaves of Lonicera japonica Thunb., enrichment and purification process by D-101 resin, and refinement of chlorogenic acid by Silica Gel Column and recrystallization. 本研究主要内容包括乙醇回流提取忍冬茎叶中绿原酸工艺、大孔树脂富集纯化粗提物中绿原酸及硅胶柱和重结晶精制绿原酸工艺的研究。