Potential of Waste as Raw Silk Worm Biodegradable Surfactant

Abstract

Silkworm pupa is byproducts of silkworm farms are not fully utilized. This study aims to assess the potential silkworm waste as a raw material surfactant "biodegradable". Silk pupa oil has 43.70% triglyceride. The characterisation by the spectra FTIR showed the degradation results in wavelength 1050-1300 cm^-1 and 1690-1760 cm^-1 indicated the consecutive C‒O and C=O group of alcohol/ether/carboxylic acids/esters, and the wave number 2500-2700 cm^-1 indicated the presence of O‒H groups of the carboxylic acid with hydrogen bonds. GC-MS analysis showed the components of palmitic acid β-monogliseride, α-monopalmitin, palmitic chloride acid, oleic acid, linoleic acid chloride. FTIR spectra degradation products Mono-diglyceride provide distinctive peaks that appear at wavelength 1041.56 cm^-1 and 3659.61 cm^-1 that showed group C-OH and OH, respectively. The performance test results of surfactant to the benzene-water system showed no effect of surfactant that is as an emulsifier. Silk pupa oil contains components that can be converted into a biodegradable surfactant.

Keywords: silkworm pupa, surfactant, glycerolysis, monoglyceride