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Scientific paper - Original scientific paper
Study on spent brewer's yeast hydrolysis by acid
In: Ružičkini dani : 13. međunarodni znanstveno-stručni skup Ružičkini dani "Danas znanost - sutra industrija" : zbornik radova. / Šubarić, Drago; Planinić, Mirela (Ed.). Osijek: Prehrambeno-tehnološki fakultet Osijek; Hrvatsko društvo kemijskih inženjera i tehnologa (HDKI), 2011. pp. 290-293. urn:nbn:hr:109:786564
Habschied, Kristina; Krstanović, Vinko; Šimunović, Ivan; Tišma, Marina; Slačanac, Vedran; Velić, Natalija

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Ružičkini dani : 13. međunarodni znanstveno-stručni skup Ružičkini dani "Danas znanost - sutra industrija" : knjiga sažetaka | Book
Ružičkini dani : 13. međunarodni znanstveno-stručni skup Ružičkini dani "Danas znanost - sutra industrija" : zbornik radova | Book
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Habschied, K., Krstanović, V., Šimunović, I., Tišma, M., Slačanac, V. & Velić, N. (2011). Study on spent brewer's yeast hydrolysis by acid. In D. Šubarić, (Ed.), M. Planinić, (Ed.), Ružičkini dani : 13. međunarodni znanstveno-stručni skup Ružičkini dani "Danas znanost - sutra industrija" : zbornik radova (pp. 290-293). Osijek: Prehrambeno-tehnološki fakultet Osijek, Hrvatsko društvo kemijskih inženjera i tehnologa (HDKI). Retrieved from https://urn.nsk.hr/urn:nbn:hr:109:786564

Habschied, Kristina, et al. "Study on spent brewer's yeast hydrolysis by acid." Ružičkini dani : 13. međunarodni znanstveno-stručni skup Ružičkini dani "Danas znanost - sutra industrija" : zbornik radova, edited by Drago Šubarić, edited by Mirela Planinić, Prehrambeno-tehnološki fakultet Osijek, Hrvatsko društvo kemijskih inženjera i tehnologa (HDKI), 2011, pp. 290-293. https://urn.nsk.hr/urn:nbn:hr:109:786564

Habschied, Kristina, Vinko Krstanović, Ivan Šimunović, Marina Tišma, Vedran Slačanac and Natalija Velić. "Study on spent brewer's yeast hydrolysis by acid." In Ružičkini dani : 13. međunarodni znanstveno-stručni skup Ružičkini dani "Danas znanost - sutra industrija" : zbornik radova, 290-293. Osijek: Prehrambeno-tehnološki fakultet Osijek, Hrvatsko društvo kemijskih inženjera i tehnologa (HDKI), 2011. Accessed 2025 March 05. https://urn.nsk.hr/urn:nbn:hr:109:786564

Habschied, K., et al. (2011) 'Study on spent brewer's yeast hydrolysis by acid', in Šubarić, D. (ed.), Planinić, M. (ed.), Ružičkini dani : 13. međunarodni znanstveno-stručni skup Ružičkini dani "Danas znanost - sutra industrija" : zbornik radova, Prehrambeno-tehnološki fakultet Osijek, Hrvatsko društvo kemijskih inženjera i tehnologa (HDKI), Osijek, pp. 290-293. Available at: https://urn.nsk.hr/urn:nbn:hr:109:786564 (Accessed 05 March 2025)

Habschied K, Krstanović V, Šimunović I, Tišma M, Slačanac V, Velić N. Study on spent brewer's yeast hydrolysis by acid. In: D. Šubarić, ed., M. Planinić, ed. Ružičkini dani : 13. međunarodni znanstveno-stručni skup Ružičkini dani "Danas znanost - sutra industrija" : zbornik radova. Osijek: Prehrambeno-tehnološki fakultet Osijek, Hrvatsko društvo kemijskih inženjera i tehnologa (HDKI); 2011. Pp. 290-293. [cited 2025 March 05] Available at: https://urn.nsk.hr/urn:nbn:hr:109:786564

K. Habschied, V. Krstanović, I. Šimunović, M. Tišma, V. Slačanac and N. Velić, "Study on spent brewer's yeast hydrolysis by acid", Ružičkini dani : 13. međunarodni znanstveno-stručni skup Ružičkini dani "Danas znanost - sutra industrija" : zbornik radova, D. Šubarić and M. Planinić, Eds. Osijek: Prehrambeno-tehnološki fakultet Osijek, Hrvatsko društvo kemijskih inženjera i tehnologa (HDKI), 2011. [Online] Available at: https://urn.nsk.hr/urn:nbn:hr:109:786564 [Accessed: 05 March 2025]

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Metadata
Title (english)Study on spent brewer's yeast hydrolysis by acid
AuthorKristina Habschied
AuthorVinko Krstanović
AuthorIvan Šimunović
AuthorMarina Tišma
AuthorVedran Slačanac
AuthorNatalija Velić
EditorDrago Šubarić
EditorMirela Planinić
Author's institutionJosip Juraj Strossmayer University of Osijek
FACULTY OF FOOD TECHNOLOGY
Scientific / art field,
discipline and subdiscipline		BIOTECHNICAL SCIENCES
Biotechnology
Abstract (english)
In this study, acid induced autolysis of spent brewer's yeast was carried out with sulfuric (SA) and lactic acid (LA). The aim of this study was to estimate the success of autolysis induced with inorganic acid compared to autoysis induced with organic acid. The reaction was performed at pH and temperature range which enable the optimum activity of the yeast endoenzymes, so that the process can be considered on acid induced autolysis of yeast biopolymers. Process of hydrolysis was monitored by measuring the increase in the free amino nitrogen (FAN}, α-amino N) concentration. Hydrolysis with sulfuric acid was conducted at the temperature range T = 45 - 60 °C, pH 5.0 - 5.4 and in the period of 12 - 32 h. Hydrolyses with lactic acid was carried out at the temperature range T= 48-62 °C, pH 4.8-6.0 and in the period of 12-44 h. The best results (\(\gamma_{FAN}\) = 4917.45 mg/L) obtained with SA were at the following process conditions: T=52 °C, pH = 5.2 and t = 32 h. On the other hand, the best results (\(\gamma_{FAN}\) = 5789.36 mg/L) obtained with LA were at the T=55 °C, pH = 5.5 and t=44 h. In both performed acid hydrolysis, α -amino N content was not detected at temperatures higher than 60 °C, suggesting the possible inactivation of yeast proteases.
Keywords (english)
Languageenglish
Publication typeScientific paper - Original scientific paper
Publication statusPublished
Peer reviewPeer review
Publication versionPublished version
Publication titleRužičkini dani : 13. međunarodni znanstveno-stručni skup Ružičkini dani "Danas znanost - sutra industrija" : zbornik radova
Series titleRužičkini dani
Numberingpp. 290-293
ISBN978-953-7005-26-9 (PTF)
ISBN978-953-6894-43-7 (HDKI)
URN:NBNurn:nbn:hr:109:786564
Publication2011
ConferenceTitle: 13. međunarodni znanstveno-stručni skup Ružičkini dani "Danas znanost - sutra industrija"
Title: 13th Ružička Days International Scientific and Professional Conference "Today science-tomorrow industry"
Acronym: Ružičkini dani
Location: Vukovar, Croatia
Organizer: Prehrambeno tehnološki fakultet Osijek
Organizer: Hrvatsko društvo kemijskih inženjera i tehnologa (HDKI)
Start date: 2010-09-16
End date: 2010-09-17
Assembly type: Poster
Type of resourceText
PublisherPrehrambeno-tehnološki fakultet Osijek
PublisherHrvatsko društvo kemijskih inženjera i tehnologa (HDKI)
Publishing placeOsijek
Access conditionsOpen access
Terms of useLicence Attribution-ShareAlike 4.0 International (CC BY-SA 4.0) icon
Created on2025-03-05 09:22:47