Quality Assessment of the Inshell Hazelnuts Based on TD-NMR Analysis

• Nondestructive testing is critical in the quality detection of products. Among several techniques, time-domain nuclear magnetic resonance (TD-NMR) is gaining attention in the field of food quality control, thanks to its ability to detect liquid and solid materials, which are strictly related to the quality of some kinds of products. In this article, a novel method for the inline quality evaluation of the inshell hazelnuts, based on TD-NMR analysis, is disclosed. Different studies have been carried out on the quality control of hazelnuts or, more in general, shell fruit. They usually focus on laboratory application and the analysis of a single physical property. Conversely, the proposed method focuses on the signal processing with the aim of reducing the execution time making the procedure suitable for an inline application. Moreover, the main hidden defects are analyzed together to identify the defective nuts from the good ones in a two-class classification procedure. © 1963-2012 IEEE.

Ämnesord

NATURVETENSKAP  -- Kemi -- Fysikalisk kemi (hsv//swe)

NATURAL SCIENCES  -- Chemical Sciences -- Physical Chemistry (hsv//eng)

Nyckelord

Digital signal processing

food quality

nondestructive technique

time-domain nuclear magnetic resonance (TD-NMR)

Defects

Nondestructive examination

Nuclear magnetic resonance

Signal processing

Time domain analysis

Classification procedure

Food quality controls

NMR analysis

Quality assessment

Quality detection

Quality evaluation

Solid material

Time domain nuclear magnetic resonance

Quality control

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