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Scientific paper - Original scientific paper
Utjecaj roka berbe na sastav i kvalitetu djevičanskih maslinovih ulja sorte Rosinjola
Croatian journal of food science and technology, 4 (2012), 1; 9-18. urn:nbn:hr:184:263251
Brkić Bubola, Karolina; Koprivnjak, Olivera; Sladonja, Barbara; Škevin, Dubravka; Belobrajić, Ivana

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Brkić Bubola, K., Koprivnjak, O., Sladonja, B., Škevin, D. & Belobrajić, I. (2012). Utjecaj roka berbe na sastav i kvalitetu djevičanskih maslinovih ulja sorte Rosinjola. Croatian journal of food science and technology, 4. (1), 9-18. Retrieved from https://urn.nsk.hr/urn:nbn:hr:184:263251

Brkić Bubola, Karolina, et al. "Utjecaj roka berbe na sastav i kvalitetu djevičanskih maslinovih ulja sorte Rosinjola." Croatian journal of food science and technology, vol. 4, no. 1, 2012, pp. 9-18. https://urn.nsk.hr/urn:nbn:hr:184:263251

Brkić Bubola, Karolina, Olivera Koprivnjak, Barbara Sladonja, Dubravka Škevin and Ivana Belobrajić. "Utjecaj roka berbe na sastav i kvalitetu djevičanskih maslinovih ulja sorte Rosinjola." Croatian journal of food science and technology 4, no. 1 (2012): 9-18. https://urn.nsk.hr/urn:nbn:hr:184:263251

Brkić Bubola, K., et al. (2012) 'Utjecaj roka berbe na sastav i kvalitetu djevičanskih maslinovih ulja sorte Rosinjola', Croatian journal of food science and technology, 4(1), pp. 9-18. Available at: https://urn.nsk.hr/urn:nbn:hr:184:263251 (Accessed 21 November 2024)

Brkić Bubola K, Koprivnjak O, Sladonja B, Škevin D, Belobrajić I. Utjecaj roka berbe na sastav i kvalitetu djevičanskih maslinovih ulja sorte Rosinjola. Croatian journal of food science and technology [Internet]. 2012 July 19 [cited 2024 November 21];4(1):9-18. Available at: https://urn.nsk.hr/urn:nbn:hr:184:263251

K. Brkić Bubola, O. Koprivnjak, B. Sladonja, D. Škevin and I. Belobrajić, "Utjecaj roka berbe na sastav i kvalitetu djevičanskih maslinovih ulja sorte Rosinjola", Croatian journal of food science and technology, vol. 4, no. 1, pp. 9-18, July 2012. [Online]. Available at: https://urn.nsk.hr/urn:nbn:hr:184:263251. [Accessed: 21 November 2024]

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Title (croatian)Utjecaj roka berbe na sastav i kvalitetu djevičanskih maslinovih ulja sorte Rosinjola
Title (english)Influence of harvest time on the composition and quality of Rosinjola cultivar virgin olive oils
AuthorKarolina Brkić Bubola
AuthorOlivera Koprivnjak
AuthorBarbara Sladonja
AuthorDubravka Škevin
AuthorIvana Belobrajić
Author's institutionUniversity of Rijeka
Faculty of Medicine
(Department of Food Technology and Quality Control)
Scientific / art field,
discipline and subdiscipline		BIOTECHNICAL SCIENCES
Food Technology
Abstract (croatian)
Cilj ovog istraživanja bio je utvrditi utjecaj roka berbe maslina autohtone istarske sorte Rosinjola na udio ulja u tijestu maslina te na sastav i kvalitetu dobivenih ulja. U kasnom roku berbe utvrđena je viša vrijednost udjela ulja u suhoj tvari tijesta maslina nego u ranom roku berbe, ali je kasna berba negativno utjecala na tržišne parametre kvalitete dobivenog ulja. Udio oleinske kiseline lagano se smanjio u kasnom roku berbe, a udio linolne kiseline je porastao. Omjer oleinska/linolna kiselina, koncentracije ukupnih fenola i orto-difenola, te vrijednosti indeksa gorčine i antioksidacijski kapacitet smanjili su se u ulju dobivenom u kasnom roku berbe. Kasni rok berbe utjecao je i na opadanje koncentracije klorofila i karotenoida te vrijednosti parametara boje (a*, b* i C) u dobivenim uljima, a svjetlina ulja (L*) se povećala. U uljima iz kasnog roka berbe koncentracije većine hlapivih tvari koje utječu na pozitivna mirisna svojstva sorte Rosinjola su opale, osim aldehida kojima je koncentracija blago narasla. Senzorska ocjena ulja iz kasnog roka berbe se smanjila, kao i intenziteti svojstava maslina, jabuka, trava, gorko i pikantno u tom ulju, dok su se intenziteti svojstava slatko i ostalo zrelo voće povećali. Ulja dobivena u ranom roku berbe opisana su kao skladna i trpka s izraženim zelenim mirisnim notama, a u ulja dobivena u kasnom roku berbe kao prezrela i bez svježine. Dobiveni rezultati izuzetno su važni zbog određivanje optimalnog trenutka berbe kao i razumijevanja potencijala sorte Rosinjola za proizvodnju visoko kvalitetnih djevičanskih maslinovih ulja s ciljanim i posebnim karakteristikama.
Abstract (english)
The aim of this investigation was to determine the influence of Rosinjola cultivar fruits harvest time on oil content in olive pastes and on composition and quality of obtained oils. In the late harvest time the higher value of oil in the dry matter of olive paste was determined than in the early harvest time, but the late harvest negatively affected oil quality parameters. The proportion of oleic acid decreased slightly in the late harvest time and linoleic acid increased. The ratio of oleic/linoleic acid, total phenols and ortho-diphenols, as well as bitterness index and antioxidant capacity decreased in the oil obtained from black fruit. Late harvest time influenced the decrease in chlorophyll and carotenoid content and color parameter values (a*, b* and C) in obtained oils, but lightness (L*) increased. The concentration of volatiles responsible for positive odour of Rosinjola oils decreased, except for aldehydes which increased slightly. Sensory score of oil obtained from the late harvest time decreased, as well as intensities of sensory characteristics olive fruity, apple, green grass, bitter and pungent, while the intensities of characteristics sweet and ripe fruits increased. Oils obtained in the early harvest time were described as harmonious and astringent with pronounced green odour notes, and oils obtained in the late harvest time as overripe and without freshness. The obtained results are important for optimal harvest time determination and understanding the potential of Rosinjola cultivar for production of high quality virgin olive oil with targeted and specific characteristics.
Keywords (croatian)
Keywords (english)
Languageenglish
Languagecroatian
Publication typeScientific paper - Original scientific paper
Publication statusPublished
Peer reviewPeer review
Publication versionPublished version
Journal titleCroatian journal of food science and technology
Numberingvol. 4, no. 1, pp. 9-18
p-ISSN1847-3466
e-ISSN1848-9923
URN:NBNurn:nbn:hr:184:263251
Publication2012-07-19
Document URLhttps://hrcak.srce.hr/84715
Type of resourceText
Access conditionsOpen access
Terms of useLicence Attribution 4.0 International (CC BY 4.0) icon
Created on2018-03-20 22:28:52