Herbal Powder Assessment
Herbal Powder Assessment - Related Videos
07:34
Use of Animal Model of Sepsis to Evaluate Novel Herbal Therapies
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Cited by 13 •
2012
Sepsis refers to a systemic inflammatory response syndrome resulting from a microbial infection, and can be simulated by a surgical technique termed cecal ligation and puncture (CLP). Here we describe a method to use CLP-induced animal model to screen medicinal herbs for therapeutic agents.
08:07
Preparation of Herbal Medicine: Er-Xian Decoction and Er-Xian-containing Serum for In Vivo and In Vitro Experiments
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Cited by 6 •
2017
Here, we present the preparation of an er-xian decoction (EXD) in four steps—soaking, decoction, filtration, and concentration—and demonstrate the administration of a prepared EXD-containing serum to rats. These methods are applicable to the in vivo and in vitro study of herbal decoctions such as traditional Chinese medicines.
08:14
Single Crystal and Powder X-ray Diffraction
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2023
Source: Tamara M. Powers, Department of Chemistry, Texas A&M University X-ray crystallography is a technique that uses X-rays to study the structure of molecules. X-ray diffraction (XRD) experiments are routinely carried out with either single-crystal or powdered samples. Single-crystal XRD: Single-crystal XRD allows for absolute structure determination. With single-crystal XRD data, the exact atomic positions can be observed, and thus bond lengths and angles can be determined. This...
09:11
Porosimetry of a Silica Alumina Powder
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2023
Source: Kerry M. Dooley and Michael G. Benton, Department of Chemical Engineering, Louisiana State University, Baton Rouge, LA Surface area and pore size distribution are attributes used by adsorbent and catalyst manufacturers and users to ensure quality control and to determine when products are at the end of their useful lives. The surface area of a porous solid is directly related to its adsorption capacity or catalytic activity. The pore size distribution of an adsorbent or catalyst is...
14:20
Absolute Quantum Yield Measurement of Powder Samples
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Cited by 16 •
2012
In this video we will demonstrate measuring and calculating absolute quantum yield and chromaticity coordinates directly in powder samples using the Hitachi F-7000 Quantum Yield Measuring System.
FAQs
Macroscopic examination uses visible characteristics of the powdered plant material to support identity assessment. Microscopic examination adds cellular and structural evidence that may reveal whether the powder corresponds to the expected plant source. Considering both levels is important because a visually similar powder may still differ microscopically, helping quality control detect substitution before medicinal use.
Microscopic examination contributes evidence that cannot be obtained from general appearance alone. It can help verify the expected plant source and expose inconsistencies within a powder that appears acceptable macroscopically. This additional level of examination is useful when identity must be checked closely, particularly because substitution or mixed composition can compromise the suitability of material for medicinal applications.
Moisture content, ash values, extractive yield, and particle characteristics examine different aspects of powder quality. Together, these measurements can indicate differences in composition, ash-related properties, extractable material, or physical consistency. Comparing the results helps reveal degradation, contamination, or batch-to-batch inconsistency that may not be evident from the powder’s appearance alone.
Chemical analysis complements physical examination by focusing on composition rather than appearance or measured physical properties. Identifying marker compounds can help assess chemical consistency, while detecting differences in composition can support recognition of adulteration. In medicinal research, this information strengthens interpretation of whether tested powders are comparable and supports more reproducible findings.
A practical evaluation combines examination of visible and microscopic characteristics with physicochemical measurements and, when supported by the assessment plan, chemical analysis. Results should be considered together rather than relying on one test, since identity, purity, physical properties, and chemical composition address different quality questions. This integrated approach supports informed quality-control decisions before use.
In medicine, Herbal Powder Assessment helps determine whether plant-based materials are consistent and suitable for research or use. Standardized evaluation strengthens safety, reproducibility, and regulatory compliance while helping identify contamination, substitution, degradation, or inconsistent composition. These controls are especially relevant to traditional therapies and research involving plant-based treatments, where material quality can affect confidence in the findings.