ArticleUltrasonics sonochemistry2026
Synergistic effects of Ultrasound-Assisted Ultra-High pressure on quality attributes and flavor profile of lactic acid Bacteria-Fermented fresh jujube juice.
Article in Ultrasonics sonochemistry, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
Non-thermal processing technologies have emerged as promising alternatives to preserve bioactive compounds in fruit-based beverages. However, the synergistic effects of ultrasound-assisted ultra-high pressure (US-UHP) combined with lactic acid bacteria fermentation on jujube juice quality remain poorly understood. This study systematically investigated the effects of US-UHP pretreatment on physicochemical properties, bioactive compounds, volatile profiles, and sensory characteristics of fermented jujube juice (FJJ). Results demonstrated that US-UHP pretreated samples exhibited superior quality attributes. At 24'h fermentation, total phenolic content reached 2.32 mg/mL, ABTS and DPPH radical scavenging activities were 87.30% and 74.86%, respectively, and ascorbic acid content was significantly higher than other groups. After 40 h fermentation, reducing sugar consumption rate reached 54.69%. Notably, US-UHP treatment significantly improved colloidal stability, with particle size maintained at 33.41-53.21 d.nm compared to 1597.67 d.nm in untreated samples, accompanied by lower polydispersity index values. Gas Chromatography-Ion Mobility Spectrometry and Headspace Solid-Phase Microextraction Gas Chromatography-Mass Spectrometry analyses revealed that US-UHP treatment effectively reduced undesirable flavor compounds (butyric acid, hexanal, acetaldehyde) while promoting the accumulation of floral and fruity scent-related ketones. Principal component analysis of electronic nose data confirmed distinct flavor differentiation among treatments, and sensory evaluation demonstrated that US-UHP pretreated samples achieved the highest overall acceptability scores. Correlation analysis indicated significant positive relationships between total phenolic/flavonoid contents and overall acceptance (r > 0.92). These findings demonstrate that US-UHP pretreatment synergistically enhances microbial inactivation, bioactive compound release, and metabolic efficiency, providing theoretical insights and technical guidance for high-quality FJJ development.
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