2007
DOI: 10.1016/j.aca.2007.02.043
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Combining information from headspace mass spectrometry and visible spectroscopy in the classification of the Ligurian olive oils

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Cited by 50 publications
(38 citation statements)
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“…In oils from different areas of Lazio (central Italy), the content of oleic and saturated acids turned out to be strongly influenced by the irrigation practice, whereas the content of volatile compounds was affected by the altitude of the cultivation site (D'Imperio et al, 2007). Head-space analysis by electronic nose/mass spectrometry and pigment analysis by visible spectroscopy have been used to differentiate the geographical origin of olive oils from three different Protected Designation of Origin areas of Liguria (northern Italy) (Casale et al, 2007). The characterization of virgin olive oils from two distinct geographical areas of northern Italy (Gulf of Trieste and near lake Garda) was developed by Vichi et al (2003).…”
Section: Introductionmentioning
confidence: 99%
“…In oils from different areas of Lazio (central Italy), the content of oleic and saturated acids turned out to be strongly influenced by the irrigation practice, whereas the content of volatile compounds was affected by the altitude of the cultivation site (D'Imperio et al, 2007). Head-space analysis by electronic nose/mass spectrometry and pigment analysis by visible spectroscopy have been used to differentiate the geographical origin of olive oils from three different Protected Designation of Origin areas of Liguria (northern Italy) (Casale et al, 2007). The characterization of virgin olive oils from two distinct geographical areas of northern Italy (Gulf of Trieste and near lake Garda) was developed by Vichi et al (2003).…”
Section: Introductionmentioning
confidence: 99%
“…12 Em relação aos métodos supervisionados, que utilizam informação prévia sobre um conjunto de amostras conhecidas, a técnica mais utilizada é a modelagem suave independente de analogias entre classes (SIMCA -Soft Independent Modeling of Class Analogies), que usa PCA para cada classe definida e testa a distância das amostras em relação a cada uma das classes, para determinar se se situa em alguma classe e em qual ou quais delas. 9 Assim, neste trabalho buscou-se classificar amostras de biodiesel em termos do tipo de óleo utilizado na produção de biodiesel (soja, algodão e girassol), utilizando espectrometria na região do visível e aplicando técnicas de reconhecimento de padrões não supervisionado e supervisionado. As técnicas não supervisionadas utilizadas foram PCA e HCA e o método supervisionado foi o SIMCA, para fazer a classificação.…”
Section: Introductionunclassified
“…To measure the particle size distribution, 8 L of wood chips samples were sieved at moisture content below 20 w% wet basis to avoid the fine particles from adhering together or losing moisture during the testing. Six circular sieves with round perforated holes in a metal plate from 3.15 mm to 63 mm, in accordance with ISO 3310-2 [51], were used in the particle size determination following EN 15149-1 [34]; five circular sieves with round perforated holes were used for ISO 17827-1 [35] particle size determination since the 8 mm sieve is no longer necessary to calculate the ISO particle size distribution class. The determination of particle size classes was made in accordance with both EN and ISO standards ( [29,30].…”
Section: Physical Characterization Of Wood Chipsmentioning
confidence: 99%
“…The term soft refers to the classifier that can identify samples as belonging to multiple classes and not necessarily producing a sample classification in non-overlapping classes. As a method of classification, SIMCA gained widespread use especially in applied statistical fields such as spectroscopic and chemometrics data analysis [35][36][37][38][39][40]. The proposed method has the advantage of considering all the variables in a multivariate way.…”
Section: Introductionmentioning
confidence: 99%