Tag: Soleris

Certification for Neogen’s Soleris Non-Fermenting Total Viable Count (NF-TVC)

In September, MicroVal granted certification for Non-Fermenting Total Viable Count (NF-TVC). NF-TVC is a series of Soleris manufactured by Neogen. NF-TVC detects total viable count at a threshold of 10 cfu per gram across a wide variety of food products.

The NF-TVC vial, containing 9 mL of broth, is designed for dilute-to-specification monitoring in diverse food matrices. As microorganisms grow in the medium, the carbon dioxide produced diffuses through a membrane into a soft agar plug with a dye indicator, resulting in a color change that is analyzed by the Soleris® instrument.

The detection time correlates with the contamination level, allowing for quicker results with higher levels of contamination. This validation aims to establish a rapid screening method for increased throughput in monitoring various food products, thus reducing both analysis time and time to results.

Campden BRI conducted the validation study in accordance with ISO 16140-2:2016, using ISO 4833-1:2013 as a reference method. The study encompasses a broad range of food categories, including dairy, fishery products (raw and ready-to-cook), fresh and processed produce, multicomponent foods, and meat and poultry products (raw and ready-to-cook).

The certificate and the detailed summary report, number 2022LR113, are available on our website.

First MicroVal certificate for commercial sterility detection method

MicroVal has recently issued the certificate for Neogen’s Soleris Commercial Sterility Testing Vials (NF-105) for the determination of commercial sterility in UHT treated milk and dairy alternative plant drinks. These are ready-to-use media vials containing a broth able to grow aerobic, mesophilic microorganisms (bacteria, yeasts and moulds) that are able to grow on an aerobic plate count at 30°C. Results from the validation data showed that the alternative method can be used as a rapid and sensitive testing method for commercial sterility monitoring of UHT treated milk and dairy alternative drinks.

Campden BRI has carried out the validation study of this alternative method, based on ISO 16140-2:2016. The Soleris NF-105 testing vial has been validated against the Codex Alimentarius, Code of Hygienic practice for milk and milk products (CAC/RCP 57-2004), Annex B Microbiocidal control measures Section 2.2 process management for UHT treatment using ISO 4833-1:2013 for the plate count at 30°C. In this validation, the method was used to determine a defined threshold of product contamination of greater than ≤ 10cfu per 0.1ml as defined in the European Directive 92/46 annex C chapter 2 for ultra-high temperature (UHT) milk.

The certificate and the accompanying summary report, number 2021LR100, can be found under ‘issued certificates / alternative methods’.