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How to fast ID fake?
The drug safety affects people's quality of life, physical health and even risks their lives. It also concerns the economic development, social stability, and it even related to proliferation of ethnic．During the past decades, there has been big increase in the number of reported case of drug safety. Counterfeit pharmaceutical products have become a serious worldwide problem，especially in the developing countries. Many methods have been developed to identify the counterfeit(s) and adulterant(s), including chemistry, spectroscopy, and chromatographic separation-based methods．Some chromatography methods which have served as the resort along this track of analytical strategy,such as high performance liquid chromatography coupled with mass spectrometry(HPLC_MS).
Nov
21
How to identify pharmaceutical raw materials and excipients by Raman instrument?
Starch is a complex polymer. It consists of glycoside bonds connecting glucose units. And because of its multifunctionality, it is used by important medicinal accessories. Solid starch has the motion of granular. The varieties and growing environment of starch influence its size and it is divided into straight chain and branched chain. The starch of staight chain has 50 to 6000 glucosamine residues for aggregation. The branched chain starch has, A , B & C, three kinds of chain. C chain is backbone with more than 60 glucosamine residues and a terminal saccharide residues. B chain is the branched chain of C, its aggregation has 45 to 55 glucosamine residues. A is the branched chain of B with 14 to 18 glucosamine residues. Different chain has different nature and its own effect by ingredients.
Nov
20
Do you know the all-automatic & high throughput portable Raman analyzer?
As we all know, Raman testing for one sample usually costs 10s or more time. Some experiments perform multiple experiments in order to obtain a higher signal-to-noise ratio, and the experiment time is longer. It takes longer time for the 1064nm Raman spectrometer to scan samples, because of weak excitation efficiency, and low response rate of infrared sensors etc. In this way, researchers consume a lot of time and effort to repeat test labors if they want to measure 100 samples, it may be take hours or even a whole day.
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