Preliminary assessment of two non-destructive instrumental techniques for quality evaluation of Lobelia chinensis Lour.☆
نویسندگان
چکیده
Two non-destructive instrumental methods, infrared spectroscopy (IR) and X-ray diffraction (XRD), were studied for quality evaluation of Lobelia chinensis Lour. (L. chinensis). We obtained the IR spectra and XRD patterns of L. chinensis collected from different sources. The similarity of samples was analyzed by calculating the cosine coefficient. The cosine values were in the range of 0.83-0.90, indicating that the main components of L. chinensis samples are similar. Sample L1 and L6 showed a slightly lower similarity than that of L2, L3, L4, L5 detected by the two methods, which revealed that IR and XRD methods exhibited analogous detection ability for quality evaluation of L. chinensis. The two methods could be highly recommended as simple and rapid detection means for quality evaluation of L. chinensis.
منابع مشابه
Evaluation and Comparison of Qualitative Properties of Lavash Bread Types During Storage by Different Techniques
Background and Objective: The quality of flat breads depends in part on the textural and structural properties of breads during storage. These properties are largely affected by flour quality. This research aimed at evaluating textural and structural properties of Lavash bread types during storage by different techniques, comparing these methods and determination of correlation between their re...
متن کاملChemical Structure and Immunomodulating Activities of an α-Glucan Purified from Lobelia chinensis Lour.
A neutral α-glucan, named BP1, with a molecular mass of approximately 9.45 kDa, was isolated from Lobelia chinensis by hot-water extraction, a Q-Sepharose Fast Flow column and Superdex-75 column chromatography. Its chemical structure was characterized by monosaccharide analysis, methylation analysis and analysis of its FT-IR, high performance gel permeation chromatography (HPGPC) and 1D/2D-NMR ...
متن کاملPreliminary phytochemical and physicochemical study of Cuscuta chinensis L. aqueous extract
Introduction: Cuscuta chinensis L. is a widely used medicinal plant with little data on its standardization. This study aims to contribute to the efficiency and safety of its use by preliminary investigation on its physicochemical and phytochemical characteristics. Method: The extract was concentrated at low temperature to prepare a dry powder. Sensory evaluation was used to determine the orga...
متن کاملA study on the effect of aqueous extract of Lobelia chinensis on colon precancerous lesions in rats.
This paper studies the effects of Lobelia chinensis on colon precancerous lesions and on colonic epithelial proliferation and apoptosis in DMH-induced rats. After two weeks of feeding, 50 Wistar rats were randomly divided into five groups, namely the normal group, model group, Lobelia chinensis low-dose group, medium-dose group and high-dose group. Lobelia chinensis was made into ACF model, and...
متن کاملA Comparative Study on Instrumental Precision of Refrigerated and Non-Refrigerated Auto-Analyzers in Order to Improve Quality Assurance in Biochemistry Laboratory
Background and Objective: Quality control is one of the most important components in order to improve quality assurance in laboratories during analytical steps. For this purpose, coefficient of variation plays an important role. Due to the fast improvement in technology, application of inferential statistics for the comparisons ...
متن کامل