Cooling treatment of olive paste during the oil processing: Impact on the yield and extra virgin olive oil quality

被引:43
|
作者
Veneziani, G. [1 ]
Esposto, S. [1 ]
Taticchi, A. [1 ]
Urbani, S. [1 ]
Selvaggini, R. [1 ]
Di Maio, I. [1 ]
Sordini, B. [1 ]
Servili, M. [1 ]
机构
[1] Univ Perugia, Dept Agr Food & Environm Sci, Via S Costanzo, I-06126 Perugia, Italy
关键词
Technological innovation; Cooling treatment; Heat exchanger; Olive oil quality; Polyphenols; Volatile compounds; PERFORMANCE LIQUID-CHROMATOGRAPHY; PULSED ELECTRIC-FIELD; VOLATILE COMPOUNDS; PHENOLIC-COMPOUNDS; FUNCTIONAL-CHARACTERIZATION; HYDROPHILIC PHENOLS; OXIDASE ACTIVITY; FRUIT; TEMPERATURE; LIPOXYGENASE;
D O I
10.1016/j.foodchem.2016.10.067
中图分类号
O69 [应用化学];
学科分类号
081704 ;
摘要
In recent years, the temperature of processed olives in many olive-growing areas was often close to 30 degrees C, due to the global warming and an early harvesting period. Consequently, the new trends in the extraction process have to include the opportunity to cool the olives or olive paste before processing to obtain high quality EVOO. A tubular thermal exchanger was used for a rapid cooling treatment (CT) of olive paste after crushing. The results did not show a significant difference in the oil yield or any modifications in the legal parameters. The cooling process determined a significant improvement of phenolic compounds in all the three Italian cultivar EVOOs analyzed, whereas the volatile compounds showed a variability largely affected by the genetic origin of the olives with C-6 aldehydes that seem to be more stable than C-6 alcohols and esters. (C) 2016 Elsevier Ltd. All rights reserved.
引用
收藏
页码:107 / 113
页数:7
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