脱色炭使“黄酒”恢复本色

黄色过重的白酒可以选用酒用脱色炭A、B进行脱色,A型脱色能力优于B型,B型损香较小;酒用脱色炭用量以0.2%最佳,色度深的酒必须增加炭的用量,有时可能达到2%。

试谈农林废料生产活性炭

农林废料生产活性炭,经济效果显著,是其综合利用的重要途径之一.本文就其意义、待解决的问题和市场前景谈几点看法.一建国以来活性炭工业发展迅速,全国总产量:1949年30吨,1975年9600吨,1978年14000吨,1982年专业生产厂(车间)达106个,市场成交额超过20000吨.国外七十年代一直以年递增5-10%的高速度发展.

玉米芯制取木糖醇新工艺

木糖醇是一种易溶于水的白色粉晶状新糖料,其甜度与蔗糖相当,是轻工、化工等多种工业产品的重要原料,既可用于制作饮料、糖果、罐头等食品,又可代替甘油用于造纸、卷烟、炸药、牙膏等生产。还可用来制作石油破乳剂、防冻剂等,发展前景广阔。其操作要点如下: 一、选料:玉米芯分红、白两种。红色玉米芯会加深木糖醇的色泽,增加脱色炭的消耗,加大成本。

Effects of Different Decolorants on Retention Rate of Total Triterpenes in Fruit and Rattan Stems of Schisandra chinensis(Turcz.) Baill

This study was to investigate the decoloration effects of activated clay, activated carbon, diatomite, Ca group bentonite, kaolin, activated aluminum oxide, magnesium oxide and attapulgite. Ultraviolet-visible spectroscopywas adopted to de- tect the absorbanees of the extracts of Schisandra chinensis fruit and rattan stems, the contents of total triterpenoids in S. chinensis fruit and rattan stems were deter- mined, and the decoloration rate and the retention rate of total triterpenoids of S. chi- nensis fruit and rattan stems were calculated. The results indicated that, attapulgite exhibited the best decoloration effect on the extract of S. chinensis fruit, with a de- coloration rate up to 60.47%, activated carbon exhibited a better decoloration effect on the extract of S. chinensis rattan stems, with a decoloration rate up to 69.24%, and they had relatively higher retention rates of total triterpenoids. In the eight de- colorants, attapulgite showed the best decoloration effect on the extract of S. chi- nensis fruit, and activated carbon exhibited the best decoloration effect on the ex- tract of S. chinensisrattan stems.

水解木素的综合利用

众所周知,水解木素仍然是水解厂难于处理的废物,尽管有许多关于用它能制取贵重产品的建议,但对于这样巨大吨数的废物来说,处理量尚嫌太小。然面对这种废料采取热加工的方法,则可以说对水解木素的工业利用问题,从根本上得到了解决。附图表明了保证无废物加工木素过程的结构流程,该流程能制取块状木炭完全合格的代用品和其它产品。

邻氨基对甲酚精制工艺的改进

邻氨基对甲酚是生产荧光增白剂DT的一种主要原料,随着化纤工业的发展,荧光增白剂DT的需要量也大大增加。邻氨基对甲苯酚过去完全依赖进口,近几年来国内有些发展,但在质量上与进口相比还有差距,主要表现在外观颜色上和结晶形状上,进口的是黄褐色颗粒状,易于较长时间贮存,而国产的大多是鳞片状或粉未状,呈灰白色,不易保存,由于接触空气面积大氧化后变黑,无法应用。

Comparison between Decolorization Effects of Activated Carbon and Macroporous Resin on Periplaneta americana L. Skimmed Cream

[Objective] The aim of this study was to investigate the decolorization ef- fects of activated carbon and macroporous resin on Periplaneta americana L. skimmed cream and compare the advantages and disadvantages of the two decolorization technologies. [Method] Periplaneta americana L. skimmed cream was decolored with activated carbon and macroporous resin, and freeze-dried to collect solid decolorization products. By investigating the yield, decolorization rate, protein retention rate and decolorization operation process, the advantages and disadvantages of the two decolorization technologies were compared. [Result] Both activated carbon and macroporous resin can be used for decolorization. To be specific, macroporous resin-decolorization is superior in the yield and protein retention rate, while activated carbon-decolorization is superior in decolorization rate and decolorization operation process. [Conclusion] Macroporous resin-decolorization can be used if protein is the main ingredient required in the experiment, while activated carbon-decolorization can be used if protein is not the main ingredient required.