Common preservation methods of strains in industrial production
作者: Huang, Zhouyang ; Mi, Cuiping
A review.The preservation methods of microbial species commonly used in industrial production are introduced, namely slant cryopreservation method, glycerol preservation method, glycerol-lactose preservation method, and sand soil tube preservation method, and their advantages and disadvantages are compared.
Shandong Huagong
The chromatographic analysis and molecular structure of p-phenylene diamine antioxidant
作者: Xie, Li-min ; Li, Yong-chun ; Wang, Xing-lu
Ensuring the actual purity of the products is helpful for the development of production and market.P-phenylene diamine antioxidant produced double peak, protrusion peak, tailing peaks and other unusual phenomena in the chromatog. anal. as the transformation between corresponding isomers in three-dimensional mol. structure of amines caused the mol. polarity changing.
Shandong Huagong
Research progress of cadmium (II) removing by adsorbent
A review.Even though adsorbent appeared in many forms, cadmium (II) removal by adsorbents had recently been the most widely investigated.This paper discussed the adsorption mechanism and effect of cadmium (II) removal by adsorbents and the progress of environmental pollution treatment effect.