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Pregled bibliografske jedinice broj: 711054

Zbornik radova

Autori: Vrana Špoljarić, Ivna; Smerdel, Bojana; Čukelj, Nikolina; Dujmić, Filip; Brnčić, Mladen; Novotni, Dubravka; Ćurić, Duška
Naslov: Ultrasound Assisted Extraction of Soluble Dietary Fiber from Cereal Bran
Izvornik: Proceedings of 7th International Congress Flour-Bread’13 and 9th Croatian Congress of Cereal Technologists Brašno-Kruh’13 / Jukić, Marko (ur.). - Osijek : Grafika d.o.o. , 2014. 203-210.
ISSN: 1848-2562
Skup: 7th International Congress Flour-Bread’13 and 9th Croatian Congress of Cereal Technologists Brašno-Kruh’13
Mjesto i datum: Opatija, Hrvatska, 16-18.10.2013.
Ključne riječi: ultrasound; extraction; barley; β-glucan
Sažetak:
The major component of soluble dietary fiber from cereal grains especially from barley are composed of mixed linkage (1→3) (1→4) β-glucan. In this research, barley bran was used as a source for β-glucan extraction. For this purpose two different technique of extraction were used: mechanical-water and ultrasound bath assisted extraction. The effect of temperature, extraction time and amplitude has been studied for ultrasound bath assisted extraction. Water assisted extraction took 2 hours with ethanol pretreatment (inactivation of β-glucosidase) while application of ultrasonic device (37 kHz) extraction took between 7-23 minutes without ethanol pretreatment. Conventional mechanical-water extraction resulted with lowest amount of extracted β-glucan (BGE=0.4200 g/100g) and extraction yield (Y1=27.11%). Extraction yield and extracted β-glucan for ultrasound assisted extraction was in the range of 48.70-98.52% and 0.7546-1.5267 g/100g, respectively. For ultrasound assisted extraction temperature and amplitude showed a strong influence on extraction process. The best extraction yield (98.52% and 98.14%) were observed on 45 °C by application of 60 and 100% of amplitude. Also, all studied cases with application of ultrasound assisted extraction resulted with 1.80-3.63 time higher efficiency of extraction (Y2) than conventional mechanical water extraction.
Vrsta sudjelovanja: Poster
Vrsta prezentacije u zborniku: Cjeloviti rad (više od 1500 riječi)
Vrsta recenzije: Međunarodna recenzija
Izvorni jezik: ENG
Kategorija: Znanstveni
Znanstvena područja:
Prehrambena tehnologija
Upisao u CROSBI: Ivna Vrana Špoljarić (ivrana@pbf.hr), 26. Kol. 2014. u 11:55 sati



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