This smart packaging is a device for non-destructive testing of bottled oil quality, as the artificial olfactory perception of oil aroma gives an indication of oil ageing and rancidity.

Optical fiber technology is used for scattered colorimetry, hyper-spectral and fluorescence spectroscopy so as to measure the optical spectral signatures of liquids of any kind, ranging from extra virgin olive oils, to beers, to lubricant oils, to detergents. The optical spectral signature is a fingerprint of the liquid sample that contains physical and chemical infos.

These optical spectral signatures are processed by means of multivariate analysis so as to achieve a 2D or 3D map. The map is populated by points, each of which represents a liquid sample with its own individual and global physico-chemical features.

When similar liquids are digitally mapped, they may be classified in clusters according to like features, while unknown liquids can be compared and assigned to the own class.

A quick check of AFM1 aflatoxin in milk is achieved by means of a compact, portable and easy-to-handle fluorometer. This device is suitable for the preliminary screening at the earlier stages of the industrial process, and makes it possible to discard contaminated milk stocks before their input in the production chain.

The sensor is capable of identifying AFM1 legal limits, 25 and 50 ppt, without the need for pre-concentration of the sample.

 

 

In several water recycling plants, after each step of the recycling process, the water is stored in reservoirs. The quality of the process is usually monitored by drawing samples from the reservoirs followed by lab analyses.

We implemented a more efficient optical fiber system that provides online and real time monitoring of water color, placed directly in the reservoir.

It shows the possibility of creating a network of optical fiber probes that can be installed in several reservoirs of the plant, so that the recycled water quality can be continually monitored from an offsite office without requiring manual sampling and lab analyses.

 

 

The cap is made of an array of optochemical sensors that are capable of sniffing the vapors of extra virgin olive oil, thus alerting the consumer or the retailer of any rancid off-flavour.

 

Sensors and their applications

The instrinsic optical and mechanical characteristics of optical fibers, together with the wide availability of bright LEDs and miniaturized spectrometers, makes it possible the implementation of compact spectrophotometers for the monitoring of specific parameters, and for general purpose for a wide area of applications.