NATINGA PROJECT
A revolutionary tool for detecting contaminants that affect the taste and aromas of the wine
The ever-feared contaminants
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Several molecules that transmit this unpleasant odor to the wines have been currently identified. Among them, there is a group of chemical compounds known as haloanisoles. Chloroanisoles and bromoanisoles – particularly TCA and 2,4,6-tribromoanisole (TBA) – are this group’s most important compounds, and they have been most frequently identified in wines with this organoleptic defect. The genesis of this problem is greatly due to an elevated environmental contamination with organochloride pesticides. The environmental burden of these pesticides, along with their slow degradation, has allowed these compounds to spread and remain over time, adhering to and contaminating porous surfaces such as corks, paints, filter pads, pallets, wooden shelves in wineries, etc.
Analyzing this situation, in 2010, TN Coopers decided to broaden its perspective and focus on developing a tool that enabled the premature detection of contamination, identifying the problem at its source. The wine industry needed a tool with hypersensitivity, and the answer didn’t lie in better technology… it was in the animal kingdom. After 2 years of training, we introduced our contaminant detection experts: Ambrosia and Odysé, two adorable and hardworking female Labrador Retriever puppies. Moro, the male, joined two years later, thus completing the first litter of Project Natinga.
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Mamba and Zamba joined the team in 2018, and Bonny and Clyde did so in 2019 as the next generation. The dogs already passed the socialization and physical strengthening stage, and they are quite evolved in detection methods. To achieve this, they are trained to identify different concentrations of contaminants from the haloanisole family (TCA, TeCA, PCA, TBA) with the purpose of establishing a safety limit when performing operations, thus avoiding false positives. These dogs’ ability to identify compounds from the halophenol family (PCP, TCP, TeCP) was only recently discovered, expanding the inspection coverage to a previous step in the haloanisole formation chain. For TN Coopers, the purpose of Project Natinga is to make an innovative contribution to the wine industry through the development of a permanent surveillance program regarding raw materials, infrastructure and processes that are present in the production of wine, making available to its clients a unique service in the world that can make a huge difference between a quality wine and one that must be simply discarded. In the context of the training, TN Coopers performs regular checks at its premises. The rounds start between 6:30 and 7:00 AM, when the air is purest and the aromas haven’t been dispersed by the day’s temperature. The routine consists of the inspection of the wood park, production areas and supply deposit, as well as the finished products.
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CONSIDERATIONS FOR IMPLEMENTATION IN VINEYARDS AND WINERIES
- The dogs are with their trainer at all times. This is the person in charge of taking them with a leash along the various places where the purpose is to detect potential contamination sources.
- The dogs do their detection work for periods of approximately 30 minutes, after which they rest before continuing. We work with at least two dogs at the same time so they can alternate between detection and rest in order to make better use of their work time.
- The space to be analyzed in search of sources should always be free from the intervention of other animals. Although it is fairly common for wineries and warehouses where wine is made to be free from the circulation of other dogs for hygiene reasons, we always remind people that if this is not the case, the performance of the Natinga dogs can be delayed (the animal will instinctively go to the place where another animal has marked territory, generating distractions).
- Once a contamination source has been identified, the animal will mark the area with a gesture easily recognizable by the trainer.
- Labrador Retrievers are very friendly and playful; this, in addition to the Natinga training, makes them very docile dogs. They are used to being surrounded by people without representing any danger to employees and workers. That being said, just like any other domesticated animal, the dog may respond if it is provoked in a hostile and irresponsible manner by a third party.
- The Natinga training is based on conditioned responses, with behaviors that are constantly rewarded with food. The Labrador is a dog that functions very well for these purposes, as it is a “greedy” animal by nature. For this reason, it is recommended that no food is left unattended and that the dog is not fed while it is working.