Naslov
Utjecaj uvjeta ekstrakcije na određivanje udjela lignina u različitim uzorcima biomase
(Efect of extraction procedure on lignin determination in different biomass samples)

Autori
Planinić, Mirela ; Bucić-Kojić, Ana ; Srećko Tomas, Nikolina Pavić, Jelena Vuković

Vrsta, podvrsta i kategorija rada
Sažeci sa skupova, sažetak, ostalo

Izvornik
Danas znanost - sutra industrija : knjiga sažetaka / Jukić, Ante - Zagreb : Osijek : Hrvatsko društvo kemijskih inženjera i tehnologa (HDKI) ; Prehrambeno tehnološki fakultet Sveučilišta Josipa Jurja Strossmayera u Osijeku, 2012, 63-63

Skup
14. Ružičkini dani

Mjesto i datum
Vukovar, Hrvatska, 13.09.2012. - 15.09.2012

Vrsta sudjelovanja
Poster

Vrsta recenzije
Međunarodna recenzija

Ključne riječi
biomasa; lignin; ekstrakcija
(biomass; lignin; extraction)

Sažetak
The numerous methods have been developed to quantitatively determine the amount of lignin in different type of biomass. Many of them are based on using mineral acid to hydrolyse carbohydrate in cell wall of the biomass sample whereat the solid residue represents the acid-insoluble lignin, which can be gravimetrically measured. These methods mostly require antecedent preparation of sample within the meaning of removing potentially interfering compounds as inorganic and nitrogen materials, non-structural sugars, phenols, fats, sterols, waxes and chlorophyll, among others. Solid-liquid extraction is most often method used for the removal of components that can interfere with the down stream analysis in biomass sample, in general. The different types of biomass involve various extraction procedures. So, the aim of this work was to study the effect of two-step and one-step extractions with different solvents on determinaed amount of aci-soluble and acid-insoluble (Klason) lignin in some sample of sawdust as well as in beet residue after sacharose production process. The obtained results indicate the importance of extraction parameters (extraction time, solvent, number of steps) on removal of extractives and determination of total lignin whit regard to biomass type.

Izvorni jezik
Engleski

Znanstvena područja
Prehrambena tehnologija

POVEZANOST RADA