Evaluation of eco-friendly coagulant from Trigonella foenum-graecum seed


The ability of seed extracts of Trigonella foenum-graecum (T. foenum-graecum) and Cuminum cyminum (C. cyminum) to act as natural coagulants was tested using natural turbid water. Seed extracts were prepared using distilled water and NaCl (0.5 M and 1.0 M) solution. Only 1.0 M NaCl extract of T. foenum-graecum had coagulation capability and did not depend on pH values. Further it showed that natural coagulant obtained from T. foenum-graecum is temperature (upto 100?C) and pH stable (pH 4.0 - 10.0). Extract of C. cyminum had very minimal (16 ± 2) coagulation property. The seed extract of T. foenum-graecum showed about 80% coagulation properties, where as the best known natural coagulants such as Strychnos potatorum and Moringa oleifera, and chemical coagulant such as Al2(SO4)3 showed around 90%, 65% and 95% respectively, which are used as standards for the present study. When compared with pond water, T. foenum-graecum extract treated water shows decrease in alkalinity, turbidity, KMnO4 demand and total coli-form. This study reveals that seed extract of T. foenum-graecum can be used as natural water coagulant.

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Ramamurthy, C. , Maheswari, M. , Selvaganabathy, N. , Kumar, M. , Sujatha, V. and Thirunavukkarasu, C. (2012) Evaluation of eco-friendly coagulant from Trigonella foenum-graecum seed. Advances in Biological Chemistry, 2, 58-63. doi: 10.4236/abc.2012.21007.

Conflicts of Interest

The authors declare no conflicts of interest.


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