11.07.2015 Views

Fac-simile Scheda Linee di Ricerca - Federalimentare

Fac-simile Scheda Linee di Ricerca - Federalimentare

Fac-simile Scheda Linee di Ricerca - Federalimentare

SHOW MORE
SHOW LESS
  • No tags were found...

You also want an ePaper? Increase the reach of your titles

YUMPU automatically turns print PDFs into web optimized ePapers that Google loves.

wheat flour. The feasibility of quantification of common wheat adulteration in semolina using real-time PCR wasalso demonstrated.2. Pasqualone, A., Montemurro, C., Simeone, R., Blanco, A. (2006) Applicazione dell’analisi deimicrosatelliti del DNA alla rilevazione <strong>di</strong> grano tenero negli sfarinati <strong>di</strong> grano duro. In: Atti 6°Convegno dell’Associazione Italiana <strong>di</strong> Scienza e Tecnologia dei Cereali, “Cereali:biotecnologie e processi innovativi. Una sfida per il mondo in cambiamento”, ed. A. Blanco,R. Cubadda e E.Marconi, Università degli Stu<strong>di</strong> <strong>di</strong> Bari – Istituto Agronomico Me<strong>di</strong>terraneo,Bari, pp. 8-16. (ISBN 2-85352-340-3).La rilevazione del grano tenero negli sfarinati <strong>di</strong> grano duro è sempre stata oggetto <strong>di</strong> interesse ed ha stimolato lamessa a punto <strong>di</strong> numerosi meto<strong>di</strong> <strong>di</strong> indagine, inizialmente basati sulla ricerca <strong>di</strong> frazioni proteiche specifichedel grano tenero con meto<strong>di</strong> immunologici. Più <strong>di</strong> recente, le tecniche <strong>di</strong> indagine del DNA hanno aperto nuoveprospettive anche nell’ottica della rilevazione del grano tenero nel duro in quanto possono essere utilizzate perin<strong>di</strong>viduare specifiche sequenze localizzate nel genoma D. Tra i numerosi tipi <strong>di</strong> marcatori del DNA oggi<strong>di</strong>sponibili, i microsatelliti si <strong>di</strong>stinguono per la semplicità e la riproducibilità dell’analisi nonché per lapossibilità <strong>di</strong> evitare l’uso <strong>di</strong> materiali ra<strong>di</strong>oattivi. Lo scopo del presente lavoro è stato, pertanto, quello <strong>di</strong>in<strong>di</strong>viduare alcuni microsatelliti specifici del genoma D e verificarne l’amplificabilità su DNA estratto da farine.Dopo un ampio screening iniziale sono stati selezionati due microsatelliti in grado <strong>di</strong> <strong>di</strong>scriminare efficacementeil grano tenero dal duro. L’applicazione successiva ad opportune miscele <strong>di</strong> sfarinati a <strong>di</strong>fferenti concentrazioni<strong>di</strong> grano tenero ha permesso <strong>di</strong> verificare la rilevabilità del 3% <strong>di</strong> grano tenero in sfarinati <strong>di</strong> grano duro,corrispondendo agli attuali requisiti legislativi per tali sfarinati.3. Pasqualone, A., Montemurro, C., Summo, C., Sabetta, W., Caponio, F., Blanco, A. (2007) Effectivenessof microsatellite DNA markers in checking the identity of PDO extra virgin oliveoil. Journal of Agricultural and Food Chemistry, 55, 3857-3862.Collina <strong>di</strong> Brin<strong>di</strong>si is an Italian extra virgin olive oil that obtained the mark of protected designation of origin(PDO) accor<strong>di</strong>ng to EC Regulation 2081/92. The varietal requirements of the official production protocol of thisoil foresee that this oil is prepared from cultivar Ogliarola (minimum 70%) and other Olea europaea L. cultivarsthat are <strong>di</strong>ffused in the production area, accounting for a maximum of 30%. The aim of this work was to verifythe effectiveness of microsatellite analysis in verifying the identity of Collina <strong>di</strong> Brin<strong>di</strong>si PDO olive oil. A preliminaryassessment of product’s quality by means of chemical analyses was also carried out. Microsatelliteanalysis clarified that the generic name Ogliarola, in<strong>di</strong>cated in the technical sheet of this PDO oil, actually correspondedto the Ogliarola salentina cultivar. Furthermore, the obtained results showed that the examination of alimited number of DNA microsatellites enables the identification of the Ogliarola salentina cultivar in this PDOoil.4. Montemurro, C., Pasqualone, A., Simeone, R., Sabetta, W., Blanco, A. (2008) AFLP molecularmarkers to identify virgin olive oils from single Italian cultivars. European Food Researchand Technology, 226, 1439-1444.Olive oil traceability becomes instrumental to ensure the consumer’s protection, particularly for extra virginolive oil, the quality of which is highly related to the cultivars employed. The aim of this investigation was toevaluate the possibility of identifying the cultivar used to obtain the derived olive oil by the analysis of amplifiedfragment length polymorphism (AFLP) markers.To this purpose, ten virgin olive oils were prepared in the laboratory from ten <strong>di</strong>fferent very common Italian cultivarsand were then analysed using six AFLP primer combinations.The technique was optimised for fragmented DNA of oil in order to enhance the intensity of the bands in theAFLP patterns. The obtained results in<strong>di</strong>cated a percentage of polymorphism ranging from 16% for Pst-AGC/Mse-AGT to 43% for Pst-AGC/Mse-ACA. The <strong>di</strong>versity index was comprised between 90.2% for Pst-AGC/Mse-AGT and 95.2% for Pst-AGG/Mse-AGG. One of the six primer combination analysed, namely Pst-AGG/Mse-AGG, was able to <strong>di</strong>stinguish all the olive oil examined, and a similarity tree of the samples waselaborated.SISTAL - SOCIETA’ ITALIANA DI SCIENZE E TECNOLOGIE ALIMENTARIDipartimento <strong>di</strong> Scienze e Tecnologie Agroalimentari, Università degli Stu<strong>di</strong> della TusciaVia San Camillo de Lellis, 01100 ViterboTel.: 0761- 35 74 94/7 , Fax: 0761- 35 74 98, e-mail: mmoresi@unitus.it19

Hooray! Your file is uploaded and ready to be published.

Saved successfully!

Ooh no, something went wrong!