Abstract

The aim of this study was to develop a model that would be able to simulate the kinetics of cell growth, lactic acid production, pH drop and sugar consumption in algae-based fermentations with Lactobacillus acidophilus BUCSAV-375 strain. The kinetic parameters of the primary models for these dependent variables were expressed as a function of the initial dry matter concentration of the media, obtaining by treatment of biomass of microalgae of Spirulina platensis (Arthrospira platensis), and their buffering capacity. Later the parameters obtained from these models were used to establish mathematical relationships with the independent variables tested. The models were validated with 6 fermentations of L. acidophilus in different algae-based media. In most cases the proposed models adequately describe the biochemical changes taking place during fermentation and are a promising approach for the formulation of algae-based probiotic foods.

中文翻译：

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嗜酸乳杆菌在基于钝顶螺旋藻生物量的培养基中的生长

摘要

本研究的目的是开发一个模型，能够模拟嗜酸乳杆菌BUCSAV-375 菌株在藻类发酵中的细胞生长、乳酸产生、pH 下降和糖消耗的动力学。这些因变量的主要模型的动力学参数表示为通过处理钝顶螺旋藻（钝顶节旋藻）微藻生物量获得的培养基初始干物质浓度及其缓冲能力的函数。后来，从这些模型获得的参数被用来与测试的自变量建立数学关系。该模型通过嗜酸 乳杆菌在不同藻类培养基中的 6 次发酵进行了验证。在大多数情况下，所提出的模型充分描述了发酵过程中发生的生化变化，并且是配制基于藻类的益生菌食品的一种有前途的方法。