About Careers MedBlog Contact us
Medindia LOGIN REGISTER
Advertisement

Determining the Geographic Origin of Hazelnuts

by Mohamed Fathima S on November 29, 2018 at 9:29 AM
Font : A-A+

Determining the Geographic Origin of Hazelnuts

Hazelnuts differ in flavor depending on its geographic origin, like cheese and olive oil. With the growing demands and willingness to pay more for better nuts in chocolates and other delicacies, scientists have developed NMR analysis that could authenticate the nuts' country origin.

People have eaten hazelnuts since at least the Mesolithic era. Today, they're the third most commonly grown nut, after almonds and walnuts. Italian hazelnuts fetch the highest price, followed by those from Turkey, the U.S., Georgia and Azerbaijan. A few previous studies evaluated analytical techniques for chemically profiling hazelnuts, but they focused either on a small region or on particular hazelnut varieties. Thomas Hackl and colleagues wanted to find a method that could pinpoint geographic origin regardless of variety.

Advertisement


The researchers ground up 262 nut samples from different regions around the world and extracted the metabolites, which they identified with proton NMR spectroscopy. The spectra showed that nuts from different regions had different metabolite profiles, with certain compounds proving distinctive for specific areas. For example, the amount of betaine, an amino acid derivative, varied significantly in nuts from different countries. Thus, betaine could potentially be a good biomarker in a future test to identify the source of a particular batch of nuts, the researchers say. For an even more accurate determination, the team's new NMR method -- which had an accuracy of 96 percent -- could be used in combination with a previously devised test that assessed a different group of hazelnut metabolites using liquid chromatography and mass spectrometry.



Source: Eurekalert
Advertisement
Advertisement
Advertisement
This site uses cookies to deliver our services.By using our site, you acknowledge that you have read and understand our Cookie Policy, Privacy Policy, and our Terms of Use  Ok, Got it. Close
×

Determining the Geographic Origin of Hazelnuts Personalised Printable Document (PDF)

Please complete this form and we'll send you a personalised information that is requested

You may use this for your own reference or forward it to your friends.

Please use the information prudently. If you are not a medical doctor please remember to consult your healthcare provider as this information is not a substitute for professional advice.

Name *

Email Address *

Country *

Areas of Interests