Olive paste fast preheating and the quality of extra virgin olive oil: sensory and chemical markers

• Autorzy: Boselli E.

Warianty tytułu

PL

Szybkie ogrzewanie masy oliwkowej i jakość oliwy z oliwek z pierwszego tłoczenia : wskaźniki sensorowe i chemiczne

• Języki publikacji: EN

Abstrakty

EN

The virgin olive oils (EVOOs) obtained with fast preheating of the olive paste after crushing combined or not with different malaxation periods were studied by means of multivariate statistical elaboration in order to find correlations between the chemical data and the sensory attributes and oxidative stability during a storage period of 12 months. Principal Component Analysis showed that a VOO with high content of simple phenolics compared to the complex phenolics is an oil which has been subjected to oxidation, for instance due to the storage or excessive heat. Based on these results, a new chemical index of 'normalized tyrosols' calculated as the ratio between the sum of concentration of 3,4-dihydroxyphenylethanol (3,4-DHPEA) and 4-hydroxyphenylethanol (p-HPEA) and the sum of total phenols (determined with HPLC) was proposed for the first time. This index is highly positively correlated to primary oxidation (r=0.6941) and inversely related to the oxidative stability (r=-0.6025). In addition, the normalized tyrosols are a good marker of sensory defects of EVOOs.

PL

Badano oliwę z oliwek z pierwszego tłoczenia (EVOOs) otrzymaną przy szybkim ogrzewaniu masy oliwkowej po rozcieraniu połączonym lub nie z różnym czasem mieszania, za pomocą wielowymiarowego opracowania statystycznego, w celu znalezienia korelacji między danymi chemicznymi a cechami smakowymi oraz odpornością na utlenianie podczas przechowywania przez 12 miesięcy. Analiza głównych składowych wykazała, że VOO z dużą zawartością prostych związków fenolowych, w porównaniu ze złożonymi związkami fenolowymi, jest oliwą podatną na utlenianie, np. podczas długotrwałego przechowywania lub przy nadmiernym ogrzewaniu. Na podstawie otrzymanych wyników zaproponowano znormalizowany indeks tyrozolowy, obliczony jako stosunek sumy stężenia 3,4-dihydroksyfenyloetanolu i 4-hydroksyfenyloetanolu oraz sumy wszystkich fenoli (oznaczonych za pomocą HPLC). Ten indeks jest wprost proporcjonalny do pierwotnego utleniania (r=0,6941) i odwrotnie proporcjonalny do odporności na utlenianie (r=-0,6025). Znormalizowany indeks tyrozolowy jest dobrym wskaźnikiem wad senso­rowych EVOOs.

Słowa kluczowe

EN

extra virgin olive oil; preheating; malaxation; phenolic compounds; HPLC; sensory analysis; consumers' preference

PL

oliwa z oliwek z pierwszego tłoczenia; ogrzewanie; rozcieranie; związki fenolowe; HPLC; analiza sensoryczna; preferencje konsumentów

• Wydawca: Centralny Ośrodek Badawczo-Rozwojowy Aparatury Badawczej i Dydaktycznej, COBRABiD sp. z.o.o
• Czasopismo: Aparatura Badawcza i Dydaktyczna
• Rocznik: 2015
• Tom: T. 20, nr 1
• Strony: 36--45
• Opis fizyczny: Bibliogr. 30 poz., wykr.

Twórcy

autor

Boselli E.

• Department of Agricultural, Food and Environmental Sciences, Marche Polytechnic University, Ancona, Italy

Bibliografia

• [1] IOC (2012). International Olive Oil Council, EU olive oil figures, Consumption, November 2012, http://www.internationaloliveoil.org/estaticos/view/131-world-olive-oil-figures
• [2] EC, 2008; Commission Regulation (EC) No 640/2008 of 4th July 2008 on characteristics of olive oil and olive residue and residue oil and on the relevant methods of analysis, 2008, Official EC Journal, L178, 11-16, Annex XII.
• [3] Amirante P., Dugo G., Gomez T., Influence of technological innovation in improving the quality of extra virgin olive oil. Olivae, 2002, 93, 34-42.
• [4] Montedoro G. F., Garofalo L., Caratteristiche qualitative degli oli vergini di oliva. Influenza di alcune variabili: varietà, ambiente, conservazione, estrazione, condizionamento del prodotto finito. Rivista Italiana delle Sostanze Grasse, 1984, 51, 3-11.
• [5] Martinez-Moreno J. M., Gomez Herrera C., Janer del Valle C., Estudios fisico-quimicos sobre las pastas de aceituna molidas. IV. Las gotas de aceite. Grasas Aceites, 1957, 8, 112-120.
• [6] Di Giovacchino L., Costantini N., Ferrante M. L., Serraiocco A., Influence of malaxation time of olive paste on oil extraction yields and chemicals and organoleptic characteristics of virgin olive oil obtained by a centrifugal decanter at water saving. Grasas Aceites, 2002, 53, 179-186.
• [7] Amirante P., Clodoveo M. L., Dugo G., Leone A., Tamborrino A., Advance technology in virgin olive oil production from traditional and de-stoned pastes: Influence of the introduction of a heat exchanger on oil quality. Food Chemistry, 2006, 98, 797-805.
• [8] Sivakumar G., Bati C. B., Uccella N., HPLC-MS screening of the antioxidant profile of Italian olive cultivars. Chemistry of Natural Compounds, 2005, 41, 588-591.
• [9] Montedoro G. F., Servili M., Baldioli M., Miniati E., Simple and hydrolysable phenolic compounds in virgin olive oil. 1. Their extraction, separation and quantitative compounds and semiquantitative evaluation by HPLC. Journal of Agricultural and Food Chemistry, 1992, 40, 1571-1576.
• [10] Smith A. B., Han Q., Breslin P. A. S., Beauchamp G. K., Synthesis and assignment of absolute configuration of (-)-oleocanthal: a potent, naturally occurring non-steroidal antiinflammatory and anti-oxidant agent derived from extra virgin olive oils. Organic Letters, 2005, 22, 5075-5078.
• [11] Tzika E. D., Sotiroudis T. G., Papadimitriou V., Xenakis A., Partial purification and characterization of peroxidase from olives (Olea europaea cv. Koroneiki). European Food Research and Technology, 2009, 228, 487-495.
• [12] Lercker G., Caramia G. M., Composizione ed aspetti salutistici dell’olio di oliva. Rivista Italiana delle Sostanze Grasse, 2010, 87, 147-169.
• [13] Angerosa F., Influence of volatile compounds on virgin olive oil quality evaluated by analytical approaches and sensor panels. European Journal of Lipid Science and Technology, 2002, 104, 639-660.
• [14] Angerosa F., Basti C., Vito R., Virgin olive oil volatile compounds from lipoxygenase pathway and characterization of some Italian cultivars. Journal of Agricultural and Food Chemistry, 1999, 47, 836-839.
• [15] Benincasa C., De Nino A., Lombardo N., Perri E., Sindona G., Tagarelli A., Assay of aroma active components of virgin olive oils from southern Italian regions by SPME-GC/ion trap. Journal of Agricultural and Food Chemistry, 2003, 29, 51(3), 733-741.
• [16] Olías J. M., Pérez A. G., Ríos J. J., Sanz L. C., Aroma of virgin olive oil: Biogenesis of the "Green" Odor Notes. Journal of Agricultural and Food Chemistry, 1993, 41, 2368-2373.
• [17] Angerosa F., Di Giacinto L., Caratteristiche di qualità dell’olio di oliva vergine in relazione ai metodi di frangitura. Rivista Italiana delle Sostanze Grasse, 1995, 72, 1-4.
• [18] Alloggio V., Caponio F., De Leonardis T., Influenza delle tecniche di preparazione della pasta di olive sulla qualità dell’olio. Nota I. Profilo quali-quantitativo delle sostanze fenoliche, mediante HPLC, in olio d’oliva vergine della cv Ogliarola Salentina. Rivista Italiana delle Sostanze Grasse, 1996, 73, 355-360.
• [19] Servili M., Baldioli M., Montedoro G. F., I meccanismi che influenzano la concentrazione in polifenoli dell’olio vergine di oliva. Proceedings of the international congress on olive oil quality, 1992, 375-376. Firenze (Italy) 1–3 December.
• [20] Fiori F., Di Lecce G., Boselli E., Pieralisi G., Frega N. G., Effects of olive paste fast preheating on the quality of extra virgin olive oil during storage, LWT – Food Science and Technology, 2014, 58, 511-518.
• [21] Artajo L. S., Romero M. P., Suarez M., Motilva M. J., Partition of phenolic compounds during the virgin olive oil industrial extraction process. European Journal of Lipid Science and Technology, 2006, 225, 617-625.
• [22] Servili M., Selvaggini R., Esposto S., Taticchi A., Montedoro G., Morozzi G., Health and sensory properties of virgin olive oil hydrophilic phenols: agronomic and technological aspects of production that affect their occurrence in the oil. Journal of Chromatography A, 2004, 1054, 113-127.
• [23] EC, 1991; Commission Regulation (EC) No 2568/91 of 11 July 1991 on the characteristics of olive oil and olive-residue oil and on the relevant methods of analysis, OJ L 347, 28.11.1992, 69-73.
• [23] Esposto S., Veneziani G., Taticchi A., Selvaggini R., Urbani S., Di Maio I., et al., Flash thermal conditioning of olive pastes during the olive oil mechanical extraction process: impact on the structural modifications of pastes and oil quality. Journal of Agricultural and Food Chemistry, 2013, 61, 4953-4960.
• [24] EC, 2003; Commission Regulation (EC) No 1989/2003 of 6 November 2003 amending Regulation (EEC) No 2568/91 on the characteristics of olive oil and olive-pomace oil and on the relevant methods of analysis, OJ L 295, 13.11.2003, 57-77.
• [25] COI, 2003; International Olive Council, COI/T.20/Doc. 26:2003, Method of analysis.
• [26] Boselli E., Di Lecce G., Minardi M., Pacetti D., Frega N. G., La spettrometria di massa nell’analisi di componenti minori polari dell’olio vergine di oliva. Rivista Italiana delle Sostanze Grasse, 2007, 84, 3-14.
• [27] Boselli E., Di Lecce G., Strabbioli R., Pieralisi G., Frega N. G., Are virgin olive oil obtained below 27°C better than those produced at higher temperatures? Food Science and Technology, 2009, 42, 748-757.
• [28] Singleton V. L., Rossi J. A., Colorimetry of total phenolics with phosphomolybdic-phosphotungstic acid reagents. American Journal of Enology and Viticulture, 1965, 16, 144-158.
• [29] Fiori F., Quality of extravirgin olive oil as a function of malaxation conditions, Ph.D. thesis, 2013, Marche Polytechnic University, Ancona, Italy.