Enrichment and preservation of a vegetable smoothie with an antioxidant and antimicrobial extract obtained from beet by-products

This study aims to assess beet leaves extracts (BLE) potential for fruit and vegetable smoothie enrichment and/or preservation. BLE presented a total phenolic content (TPC: 132.43 ± 1.51 g kg−1 dry weight (DW) basis) and an antioxidant capacity (219.2 ± 23.4 mmol kg−1 DW for FRAP and 28.9 ± 0.5 mmol kg−1 DW for DPPH). An antimicrobial activity assay proved BLE effectiveness against Listeria innocua, E. coli and Saccharomyces cerevisiae on systems of pH 3.7 and 7, with initial counts of 4 or 7 log CFU/mL. Incorporation of the BLE into a fruit and vegetable (F&V) smoothie containing orange juice (59%), apples (15%), carrots (15%), BL (6%) and beet stems (5%), significantly increased (50%) TPC of the product as well as their antioxidant capacity. Additionally, extract-enriched smoothies achieved reductions between of 1–3 log cycles in smoothie's native microflora allowing to obtain a one-week shelf-life extension, and presented greater nutritional retention during storage at 5 °C. Therefore, BLE has great potential to be used for the enrichment and preservation of smoothies, bringing great advantages for food industry, consumers and producers.
Source: LWT Food Science and Technology - Category: Food Science Source Type: research

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Source: International Journal of Environmental Research and Public Health - Category: Environmental Health Authors: Tags: Review Source Type: research
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Source: Materials Today: Proceedings - Category: Materials Science Source Type: research
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Source: EurekAlert! - Infectious and Emerging Diseases - Category: Infectious Diseases Source Type: news
This study was performed to analyze perinatal prognosis and related factors of maternal bacterial sepsis in west China. We conducted a cross-sectional study of pregnant women with bacterial sepsis who were admitted into a tertiary care center in western China between 2011and 2015. Data from these cases were collected and analyzed. Eighty six women were identified with bacterial sepsis in our hospital, and the incidence of maternal bacterial sepsis was 1.7 per 1000 maternities, the incidence of septic shock was 1.8 per 10,000 maternities, and 1 maternal death occurred. Among the 86 pregnant women with bacterial sepsis, ge...
Source: Medicine - Category: Internal Medicine Tags: Research Article: Observational Study Source Type: research
Many bacteria and some archaea produce the second messenger cyclic diadenosine monophosphate (c-di-AMP). c-di-AMP controls the uptake of osmolytes in Firmicutes, including the human pathogen Listeria monocytogenes, making it essential for growth. c-di-AMP is known to directly regulate several potassium channels involved in osmolyte transport in species such as Bacillus subtilis and Streptococcus pneumoniae, but whether this same mechanism is involved in L. monocytogenes, or even whether similar ion channels were present, was not known. Here, we have identified and characterized the putative L. monocytogenes' potassium tran...
Source: Journal of Biological Chemistry - Category: Chemistry Authors: Tags: Microbiology Source Type: research
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Source: Food Packaging and Shelf Life - Category: Food Science Source Type: research
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Source: Applied Microbiology and Biotechnology - Category: Microbiology Authors: Tags: Appl Microbiol Biotechnol Source Type: research
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Source: International Journal of Food Microbiology - Category: Food Science Authors: Tags: Int J Food Microbiol Source Type: research
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Source: LWT Food Science and Technology - Category: Food Science Source Type: research
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