PAPER TITLE :ANTIOXIDANT POTENTIAL OF SERICIN EXTRACTED FROM SILKWORM (BOMBYX MORI) COCOON ON THE STABILITY OF SOME EDIBLE OILS.

FUTA JOURNAL OF RESEARCH IN SCIENCE | VOLUME 14 NUMBER 1 2018

Paper Details

  • Author(s) : A. O. Adetuyi , T. S. Fasoto, K. F. Olupona, O. Ayodele, K. O. Olorunfemi and O. Odediran
  • Abstract:

Antioxidant potential of silkworm cocoon extracts (sericin) on soya bean oil and palm kernel oil was investigated for a period of twelve weeks at room temperature by dosing various concentrations (0.2 - 1.0%) of the extracts into refined soya bean oil and palm kernel oil. Extract of sericin from silkworm cocoon was extracted with distilled water, 0.1 M citric acid, sodium carbonate and urea solutions. The antioxidant potential of the extracts were monitored every two weeks by measuring the acid value (AV), peroxide value (PV), free fatty acid (FFA) and the refractive index (RI) of the oil samples for twelve weeks. Physicochemical parameters such as percentage yield, volatile matter, and ash content fell within limits for the extracts and the edible oils with the exception of acid values of the soya bean and palm kernel oils which were higher than recommended values as described by FAO/WHO (2009); AOAC (2005); and Anon (2003). Antioxidant activities of all the extracts were determined using ferric reducing antioxidant power (FRAP) Fe2+ chelating activity (%) and DPPH radical scavenging activity (%). All the extracts considered were observed to show significant antioxidant potential with DPPH radical scavenging activity (%) of 14.94 ± 0.73, 13.78 ± 1.19, 13.18 ± 1.06, and 13.04 ± 0.75 for silkworm sericin extracted with citric acid, sodium carbonate, hot water, and urea, respectively.
Keywords:  Antioxidant, Cocoon, edible oils, Sericin, Silkworm.