Valutazione di nitrati e nitriti in spinaci di IV gamma

In the last years, life’s conditions of the population have changed and consumers look for practical and fast foods. In answer to the consumer’s demands, food industry has introduced products ready to the use on market. For example, the IV series products have replaced fresh vegetables for their practicality, but they must satisfy requisites as the nitrates concentration. Nitrates determine the vegetable’s quality, while their reduction in nitrites is cause of toxicity on the man. The aim of study is evaluation of the impact that packaging’s and conservation’s different methods has on nitrites concentration; fresh spinaches are compared with frozen and IV range spinaches. The determination of nitrates is performed by adding Griess’ reagent to the sample and measuring the absorbance at 570 nm. Results show that IV range spinaches, subjected to technological processes, received treatments that can compromise product’s quality.