Fernando Gabriel Martínez, Gustavo Moreno-Martín, Florencia Mohamed, Micaela Pescuma, Yolanda Madrid-Albarrán, Fernanda Mozzi
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Selenium-enriched fermented beverage with improved sensorial properties using lactic acid bacteria
The aim of this study was to formulate a Selenium (Se)-bioenriched fermented beverage using selenized lactic acid bacteria (LAB) with desirable sensory attributes and shelf-life. The fruit-origin strains Lactiplantibacillus paraplantarum CRL 2051 and Fructobacillus tropaeoli CRL 2034 were grown in MRS-fructose with 5 mg/L Se before inoculation. Then, the selenized strains were inoculated separately or together in a fruit juice and cowmilk beverage and allowed to ferment at 30 °C for 14 h. During microbial growth, the strains accumulated 62.8–93.5 µg/L of total Se, with 32.7–47.8 µg/L composed of the amino acids selenocysteine (SeCys), and 6.1–12.7 µg/L of selenomethionine (SeMet). The beverages fermented by L. paraplantarum CRL 2051 alone and by the mixed culture showed the highest levels of general acceptance and best sensory attributes. The latter fermented beverage exhibited high microbial resistance to cold storage after 52 days and to gastrointestinal tract conditions as well as an acceptable sensory shelf-life of 42 days. For the first time, microbial selenization previous to food fermentation successfully allowed Se fortification and the formulation of a functional Se-enriched beverage with desirable sensory properties and shelf-life.
期刊介绍:
The Journal of Food Science and Technology (JFST) is the official publication of the Association of Food Scientists and Technologists of India (AFSTI). This monthly publishes peer-reviewed research papers and reviews in all branches of science, technology, packaging and engineering of foods and food products. Special emphasis is given to fundamental and applied research findings that have potential for enhancing product quality, extend shelf life of fresh and processed food products and improve process efficiency. Critical reviews on new perspectives in food handling and processing, innovative and emerging technologies and trends and future research in food products and food industry byproducts are also welcome. The journal also publishes book reviews relevant to all aspects of food science, technology and engineering.