Functional Group, Transversal optic and Longitudinal Optic Analysis using Kramer-Kronig method of mycellium and Oyster Mushroom in 35th, 40th, and 45th days

Abstract

Pleurotus Ostreatus, known as white oyster mushroom, has higher nutrient than other mushroom. The purpose of this research is analysing the result of FTIR spectrum mycelium and oyster mushroom to the open time baglog after incubation and counting the spring constant from function group that was contained in the mycelium of oyster mushroom by FTIR method at wavenumber range 400 – 4000 cm^-1. By FTIR method, function groups of molecules are C-O, C=O, C-H, and O-H in the mycelium and oyster mushrooms. The molecule C-O, C=O, and C-H indicate carbohydrates and O-H molecule indicates water. O-H molecule in the 40th days has low transmittance. It shows the content of water in the 40th is more than the 35th days. The value of absorption energy constant in oyster mushroom is higher than mycelium. The value of spring constant in oyster mushroom is higher than mycelium by the harmonic stretching principle and unharmonic. Based on FTIR spectral at wavenumber range 400 – 1200 cm^-1, transversal optic (TO) and longitudinal optic (LO) values were obtained using the Kramer-Kronig method.