Effect of storage of shelled Moringa oleifera seeds from reaping time on turbidity removal

Abstract

Moringa oleifera is an indigenous plant to Malaysia whose seeds are used for water purification. Many studies on Moringa oleifera have shown that it is highly effective as a natural coagulant for turbidity removal. In this study, two different methods for extraction of Moringa's active ingredient were investigated. Results of sodium chloride (NaCl) and distilled water extraction of Moringa oleifera seeds showed that salt solution extraction was more efficient than distilled water in extracting Moringa's active coagulant ingredient. The optimum dosage of shelled Moringa oleifera seeds extracted by the NaCl solution was comparable with that of the conventional chemical coagulant alum. Moreover, the turbidity removal efficiency was investigated for shelled Moringa oleifera seeds before drying in the oven under different storage conditions (i.e. open and closed containers at room temperature, 27W C) and durations (fresh, and storage for 2, 4, 6 and 8 weeks from the time the seeds were picked from the trees). Our results indicate that there are no significant differences in coagulation efficiencies and, accordingly, turbidity removals between the examined storage conditions and periods.

Potential ofM. oleiferafor the Treatment of Water and Wastewater

“…Yet in a recent study, Golestanbagh et al did not find any significant difference in the coagulation efficiency of SMOS for turbidity removal stored in open and closed containers at room temperature for different durations, which varied from fresh seeds taken from the tree to storage for 2, 4, 6, and 8 weeks.…”

Thiocarbamates from Moringa oleifera Seeds Bioactive against Virulent and Multidrug-Resistant Vibrio Species

“…Studies on the bioactive properties of Moringa seeds highlight multiple uses of this phanerogam, for example, turbidity removal of contaminated water by coagulation [16], biosorption of heavy metals in effluents [17], anti-inflammatory [18], and antibacterial activity against S. aureus and E. coli [19]. However, bioactivity against vibrios has not been widely researched.…”

Extracts of Moringa oleifera and Croton californicus against infections of Vibrio parahaemolyticus (IPNGS16) in juvenile Pacific white shrimp (Penaeus vannamei)

“…Another plant, Moringa oleifera, has been researched since the 1980s for its antimicrobial effect, which appears to be related to the presence of glycosides, 4-(𝛼-Lrhamnosyloxy)-benzyl isothiocyanate, and 4-(𝛼-Lrhamnosyloxy)-phenyl-acetonitrile (Costa et al 2017). Moringa is useful for removing turbidity of contaminated water by coagulation (Golestanbagh et al 2011) and biosorption of heavy metals in effluents (Araújo et al 2010). It is an anti-inflammatory (Pereira et al 2011) and has antibacterial activity.…”