Stepwise isothermal fast pyrolisis (SIFP). Part II. SIFP of Peanut Shells- Antifungal Properties of Phenolic Fractions

LÓPEZ RIVILLI PATRICIA; ALARCÓN ROSANA; LÓPEZ ISASMENDI GUADALUPE; PÉREZ JORGE DANIEL

BIORESOURCES

NORTH CAROLINA STATE UNIV DEPT WOOD & PAPER SCI

Año: 2012 vol. 7 p. 112 - 117

1930-2126

Pyrolisis of penut shells was carried out using stepwise isothermal fast pyrolisis (SIFP). SIFP consists of succesive isothermal fast pyrolysis reactions, where solid products obtained in the previous isothermal fast pyrolysis become the substrate of the subsequent reaction at a higher temperature. This article reports results obtained from SIFP of peanut shells between 200 and 300ºC using 100ºC intervals under vaccum (0.2 mm). The maximum yield of liquid products was obtained at 300ºC, giving around 30% of bio-oil, which contained mainly phenols and furan derivatives. On the other hand, since previous papers have reported fungicidal activity of phenols derivatives from lingo-cellulosic biomass pyrolysis, we carried out antifungal activity tests of bio oil obtained from peanut shells SIFP at 300ºC. Results seem promising, at least on Sclerotium rolfsii.