Effect of ultrasound-attenuation on technological and functional properties of two strains of Lactiplantibacillus plantarum isolated from table olives

IF 8.7 1区 化学 Q1 ACOUSTICS
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Abstract

While probiotics have a wide range of beneficial properties, they can also negatively affect the taste or aroma of foods products by resulting in the phenomenon of post-acidification. Ultrasound (US) is a tool to modulate the metabolism of probiotic bacteria, counteracting post-acidification and improving the performance and functional properties of microorganisms without affecting their viability. The purpose of this paper was to evaluate the effect of 10 different combinations of power (20 and 40 %) and duration (2, 4, 6, 8 and 10 min) of US treatment on two functional strains of Lactiplantibacillus plantarum (c16 and c19) isolated from table olives, with the aim of understanding how, some of the main functional and technological traits (viability, acidification, growth profile under different conditions, antibiotic resistance, viability at pH 2.0 and 0.3 % bile salts), were affected. It was found that the effects were strain dependent, and the best results were obtained for strain c19 in the combinations at 20 % for 8 and 10 min and 40 % for 2 min, where an improvement in functional characteristics was found, with some effects on biofilm stability, inhibition of acidification, without adverse results on some technological properties.

超声衰减对从食用橄榄中分离出的两株植物乳杆菌的技术和功能特性的影响
虽然益生菌具有广泛的有益特性,但它们也会导致后酸化现象,从而对食品的口感或香味产生负面影响。超声波(US)是一种调节益生菌新陈代谢的工具,可在不影响益生菌活力的情况下抵消后酸化现象,改善微生物的性能和功能特性。本文旨在评估 10 种不同功率组合(20% 和 40%)和持续时间(2、4、6、8 和 10 分钟)的超声波处理对从食用橄榄中分离出来的两株植物乳杆菌(c16 和 c19)的影响,目的是了解一些主要功能和技术特性(活力、酸化、不同条件下的生长曲线、抗生素抗性、pH 值为 2.0 和 0.3% 胆盐条件下的活力)是如何受到影响的。研究发现,这些影响与菌株有关,在 20% 8 和 10 分钟以及 40% 2 分钟的组合中,c19 菌株获得了最佳结果,功能特性得到改善,生物膜稳定性和酸化抑制受到一定影响,但某些技术特性没有受到不利影响。
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来源期刊
Ultrasonics Sonochemistry
Ultrasonics Sonochemistry 化学-化学综合
CiteScore
15.80
自引率
11.90%
发文量
361
审稿时长
59 days
期刊介绍: Ultrasonics Sonochemistry stands as a premier international journal dedicated to the publication of high-quality research articles primarily focusing on chemical reactions and reactors induced by ultrasonic waves, known as sonochemistry. Beyond chemical reactions, the journal also welcomes contributions related to cavitation-induced events and processing, including sonoluminescence, and the transformation of materials on chemical, physical, and biological levels. Since its inception in 1994, Ultrasonics Sonochemistry has consistently maintained a top ranking in the "Acoustics" category, reflecting its esteemed reputation in the field. The journal publishes exceptional papers covering various areas of ultrasonics and sonochemistry. Its contributions are highly regarded by both academia and industry stakeholders, demonstrating its relevance and impact in advancing research and innovation.
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