Naslov
Enzymatic esterification of pre-treated and untreated acid oil soapstock

Autori
Borges, Joao ; Alvim-Ferraz, Conceicao ; Almeida, Manuel F. ; Dias, Johana Maia ; Budžaki, Sandra

Vrsta, podvrsta i kategorija rada
Radovi u zbornicima skupova, cjeloviti rad (in extenso), znanstveni

Izvornik
WASTES – Solutions, Treatments and Opportunities II: Selected Papers from the 4th Edition of the International Conference on Wastes: Solutions, Treatments and Opportunities / Vilarinho, Candida ; Castro, Fernando ; de Lurdes Lopes, Maria - London : Delhi : CRC Press ; Taylor & Francis, 2017, 241-246

ISBN
978-1138196698

Skup
4th International Conference on Wastes: Solutions, Treatments and Opportunities

Mjesto i datum
Porto, Portugal, 25.09.2017. - 26.09.2017

Vrsta sudjelovanja
Predavanje

Vrsta recenzije
Međunarodna recenzija

Ključne riječi
estarification ; transesterification ; soapstock oil ; lipase

Sažetak
The soapstock oil presents high free fatty acid (FFA) content, being potentially a sustaina-ble alternative feedstock for biodiesel production. In the present work, enzymatic esterifi-cation using a suspension of Thermomyces lanuginosus lipase was conducted on pre-treated and untreated acid oil from soapstock derived from the refining of vegetable oil mixtures. The enzyme suspension was prepared by mixing it with a 1 M phosphate buffer (1:10 V/V, enzyme:buffer). Esterification was conducted in an orbital shaking incubator at 40.0 ºC using a molar ratio of acid to methanol of 1:3, during 24 h at 200 rpm ; monitoring was performed at 0, 7 and 24 h. Around 80% FFA reduction was obtained us-ing raw and pre-treated oil, showing that the use of suspended enzyme avoids the need for pretreatment. Fatty Acid Methyl Ester content was determined, indicating that both esterification and transesterification occurred.

Izvorni jezik
Engleski

Znanstvena područja
Kemijsko inženjerstvo, Biotehnologija, Prehrambena tehnologija

POVEZANOST RADA