Related Experiment Video
Updated: Mar 6, 2026

Quantification of Violacein in Chromobacterium violaceum and Its Inhibition by Bioactive Compounds
Published on: August 8, 2025
Anti-complementary constituents of Viola kunawarensis
Hui Wang1, Wen-Li Cong1, Ze-Long Fu2
1a Key Laboratory of Xinjiang Endemic Phytomedicine Resources Ministry of Education , Shihezi University College of Pharmacy , Shihezi , P.R. China.
Abstract:
Activity-guided fractionation for complement inhibitors led to the isolation of 22 known compounds from Viola kunawarensis. Chemical types include six sterol compounds, three coumarin compounds, five megastigmane compounds, two triterpenoid compounds, two phenylpropanoid compounds, one chlorophyll, one amide, and two lipid compounds. Among which, two sterols (stigmasta-4-ene-3β,6β-diol and saringosterone), one amide (aurantiamide acetate) and a norsesquiterpenoid (solalyratin B) exhibited better anti-complementary effects with CH50 values ranging from 0.02 to 0.08 mM, which are plausible candidates for developing potent anti-complementary agents.
More Related Videos
Related Concept Videos
Complement System
Complementation Tests
Organisms heterozygous for different mutations are crossed pairwise in all combinations. If present on different genes, the mutations can complement each other by providing the missing...
Introduction to Plant Diversity
Complementary DNA
Seedless Vascular Plants
Anticoagulant Drugs: Vitamin K Antagonists and Direct Oral Anticoagulants
Warfarin, a prominent vitamin K antagonist family member, exerts its effect by inhibiting the enzyme VKORC1 (vitamin K epoxide reductase complex 1). By hindering this enzyme, warfarin...

