Rapid Screening of Fatty Acid Alkyl Esters in Olive Oils by Time Domain Reflectometry

被引：13

作者：

Berardinelli, Annachiara ^{[1
]}

Ragni, Luigi ^{[1
,2
]}

Bendini, Alessandra ^{[1
,2
]}

Valli, Enrico ^{[1
]}

Conte, Lanfranco ^{[3
]}

Guarnieri, Adriano ^{[2
]}

Toschi, Tullia Gallina ^{[1
,2
]}

机构：

[1] Alma Mater Studiorum Univ Bologna, Interdept Ctr Agrifood Ind Res, Cesena, FC, Italy

[2] Alma Mater Studiorum Univ Bologna, Dept Agr & Food Sci DISTAL, Cesena, FC, Italy

[3] Univ Udine, Dept Food Sci, I-33100 Udine, Italy

来源：

JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY | 2013年 / 61卷 / 46期

关键词：

fatty acid alkyl esters; food quality; olive oil; PLS; rapid screening; TDR; FTIR SPECTROSCOPY; ELECTRONIC NOSE; QUALITY; CLASSIFICATION; ADULTERATION; STORAGE; ORIGIN; TOOL;

D O I：

10.1021/jf402872m

中图分类号：

S [农业科学];

学科分类号：

09 ;

摘要：

The main aim of the present research is to assess the possibility of quickly screening fatty acid alkyl esters (FAAE) in olive oils using time domain reflectometry (TDR) and partial least-squares (PLS) multivariate statistical analysis. Eighteen virgin olive oil samples with fatty acid alkyl ester contents and fatty acid ethyl ester/methyl ester ratios (FAEE/FAME) ranging from 3 to 100 mg kg(-1) and from 0.3 to 2.6, respectively, were submitted to tests with time domain resolution of 1 ps. The results obtained in test set validation demonstrated that this new and fast analytical approach is able to predict FAME, FAEE, and FAME + FAEE contents with R-2 values of 0.905, 0.923, and 0.927, respectively. Further measurements on mixtures between olive oil and FAAE standards confirmed that the prediction is based on a direct influence of fatty acid alkyl esters on the TDR signal. The suggested technique appeared potentially suitable for monitoring one of the most important quality attribute of the olive oil in the extraction process.

引用

页码：10919 / 10924

页数：6

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