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Impact of pre-fermentative maceration techniques on the chemical characteristics, phenolic composition, in vitro bioaccessibility, and biological activities of alcoholic and acetic fermented products from jaboticaba (Plinia trunciflora). | LitMetric

AI Article Synopsis

Article Abstract

The jaboticaba is a fruit with a highly promising chemical profile for producing fermented products with biological activity. In this context, evaluating pre-fermentative maceration techniques in jaboticaba fermentations is essential to optimize the extraction of phenolic compounds and other metabolites of interest, imparting antioxidant characteristics to the product and offering potential health benefits. This study evaluated the impact of two pre-fermentative maceration techniques on the phenolic composition, bioaccessibility, and biological activities (α-amylase, α-glucosidase, and ACE inhibition) of alcoholic and acetic fermented products from jaboticaba. Three treatments were performed: one without pre-fermentative maceration and two with maceration, one cold (4 °C for 24 h) and the other thermal maceration (50 °C until 16 °Brix). The resulting musts were subjected to alcoholic and acetic fermentation. The results showed that the fermented products obtained after thermal maceration had higher concentrations of phenolic compounds, with ellagic acid (5393.78 µg/L) standing out for thealcoholic beverage and 2.5-DHBA (1552.33 µg/L) and 3.4-DHB (863.15 µg/L) acids for the vinegar. Regarding bioaccessibility, both pre-fermentative maceration techniques contributed to more bioaccessible compounds (with indices above 20 %) compared to the samples without maceration. A more significant inhibition of α-amylase and α-glucosidase was observed in the samples subjected to thermal maceration, along with notable ACE inhibition. Additionally, the sensitivity of E. coli, S. aureus, L. monocytogenes, and S. Enteritidis to the fermented jaboticaba products was verified, with distinct sensitivity patterns for each type of bacteria. In summary, this study offers a new perspective for valorizing fermented jaboticaba products through pre-fermentative techniques, enriching the understanding of this technique and its potential nutritional and bioactive contributions.

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http://dx.doi.org/10.1016/j.foodres.2024.115246DOI Listing

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