3-O-(2′E,4′Z-decadienoyl)-20-O-acetylingenol, one toxic terpenoid from raw Gansui. It has strong cytotoxicity against human normal cell lines L-O2 and GES-1 with dose-dependent relationships .
It shows antinematodal activity against the nematode, Bursaphelenchus xylophilus, at a minimum effective dose (MED) of 5 microg/cotton ball. 3-O-(2'E,4'Z-decadienoyl)-20-O-acetylingenol induces the cytotoxicity of intestinal epithelial cells of rats (IEC-6 cells) depends on induction of cell apoptosis via mitochondrial pathway and cell cycle arrest.3-O-(2'E,4'Z-decadienoyl)-20-O-acetylingenol, kansuinine B and kansuinine A can markedly promote SPL proliferation and NO production by PMphi at concentrations from 0.78 to 12.50 microg/mL, hence the they are believed to be important proinflammatory components of the roots of E. kansui.
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Providing storage is as stated on the product vial and the vial is kept tightly sealed, the product can be stored for up to 24 months(2-8C)
Wherever possible, you should prepare and use solutions on the same day. However, if you need to make up stock solutions in advance, we recommend that you store the solution as aliquots in tightly sealed vials at -20C. Generally, these will be useable for up to two weeks. Before use, and prior to opening the vial we recommend that you allow your product to equilibrate to room temperature for at least 1 hour.
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The packaging of the product may have turned upside down during transportation, resulting in the natural compounds adhering to the neck or cap of the vial. take the vial out of its packaging and gently shake to let the compounds fall to the bottom of the vial. for liquid products, centrifuge at 200-500 RPM to gather the liquid at the bottom of the vial. try to avoid loss or contamination during handling.
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Ultra-performance liquid chromatography-quadrupole/time-of-flight mass spectrometry analysis of the impact of processing on toxic components of Kansui Radix[Reference: WebLink
Kansui Radix (Gansui in Chinese), the dried tuber of Euphorbia kansui, is a Chinese medicinal herb commonly used for the treatment of oedema and ascites with dyspnea. Because of its toxic nature, the herb is usually processed with vinegar to reduce the toxicity. A report has shown that the contents of toxic terpenoids in Gansui decreased after processing with vinegar. However, comprehensive comparison of the chemical profiles between vinegar-processed and raw Gansui has not yet been conducted.
METHODS AND RESULTS:
An ultra-high-performance liquid chromatography in conjunction with ultra-high resolution quadrupole time-of-flight mass spectrometry (UHPLC UHD Q-TOF MS/MS) method was developed for the analysis of chemical profiles of vinegar-processed and raw Gansui in this study.Results showed that processing with vinegar caused conspicuous chemical changes. Among the altered components,
11 toxic terpenoids, 3-O-benzoyl-13-O- dodecanoylingenol/20-O-benzoyl-13-O-dodecanoylingenol, kansuinine D, kansuinine A, 3-O-benzoyl-13-O-dodecanoylingenol/20-O-benzoyl-13-O-dodecanoylingenol, 3-O- benzoylingenol/20-O-benzoylingenol, 20-O-(2′E,4′Z-decadienoyl)ingenol/20-O-(2′E,4′E- decadienoyl)ingenol/3-O-(2′E,4′Z-decadienoyl)ingenol/3-O-(2′E,4′E-decadienoyl)ingenol, 3-O-(2'E ,4'Z-decadienoyl)-20-deoxyingenol,3-O-(2′E,4′Z-,ecadienoyl)-5-O-acetylingenol,3-O-(2'E ,4'Z-decadienoyl)-20-O-acetylingenol ,3-O-(2,3-dimethylbutanoyl)-13-O-dodecanoylingenol, were tentatively identified. The contents of most of these terpenoids were obviously decreased after processing with reductions of 6.66–95.25 %.
Our findings could help us understand the chemical basis for the toxicity reduction of Gansui afforded by processing with vinegar. Further investigations are warranted to establish the relationship between processing-induced chemical changes and the reduction of toxicity of Gansui.