Data di Pubblicazione:
2022
Citazione:
Replacement of nitrite does not affect protein and fatty acids biaccessibility of salami / E. Chiarello, M. DI NUNZIO, G. Picone, G. Antonelli, F. Capozzi, G. Galaverna, A. Bordoni. ((Intervento presentato al 42. convegno Congresso Nazionale Società Italiana di Nutrizione Umana tenutosi a Napoli : 4-6 aprile nel 2022.
Abstract:
The salts of nitrite are commonly used for curing meat to preserve the microbial quality, color and prevent lipid oxidation. During digestion, nitrites can react with a secondary amine and generate a group of compounds known as nitrosamines, some of which are carcinogenic. Therefore, the meat industry is currently focusing on the development of alternatives to nitrites. To this aim, innovative salami were formulated replacing nitrites with a starter colture (lactic bacteria and S.Vitulinus) plus ascorbic acid (SA), also adding a polyphenol mix (SMA). The scope of this study was to evaluate protein and fatty acid bioaccessibility and total antioxidant activity of the new formulations, and to compare them to conventional salami with (C-NO2) or without nitrite (CO). To this aim, salami underwent in vitro digestion and intermediate samples were taken at end of the gastric phase, in the middle and at the end of the duodenal phase. The protein content in digested samples was evaluated by different spectrophotometric methods and by Nuclear Magnetic Resonance; fatty acids bioaccessibility was assessed by gas chromatography. No significant differences in protein content were detected among digested samples at any time point, except in the middle of duodenal phase when protein content appeared significantly higher in SMA than C-NO2. At the end of the in vitro digestion, fatty acids bioaccessibility and total antioxidant activity were similar in all experimental conditions. Our results indicate that innovative formulation can represent a valid approach to improve healthiness of salami without affecting their nutritional quality. Further analyses are underway to evaluate the bioactive peptides content.
Tipologia IRIS:
14 - Intervento a convegno non pubblicato
Elenco autori:
E. Chiarello, M. DI NUNZIO, G. Picone, G. Antonelli, F. Capozzi, G. Galaverna, A. Bordoni
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