Missaoui Jihen, Saidane Dalila, Mzoughi Ridha, Minervini Fabio
Laboratory of Analysis, Treatment and Evaluation of Environmental Pollutants and Products, Faculty of Pharmacy, Monastir University, 5000 Monastir, Tunisia.
Dipartimento di Scienze del Suolo, della Pianta e degli Alimenti, Università degli Studi di Bari Aldo Moro, 70126 Bari, Italy.
Microorganisms. 2019 Dec 17;7(12):709. doi: 10.3390/microorganisms7120709.
Microorganisms inhabiting fermented foods represent the main link between the consumption of this food and human health. Although some fermented food is a reservoir of potentially probiotic microorganisms, several foods are still unexplored. This study aimed at characterizing the probiotic potential of lactic acid bacteria isolated from zgougou, a fermented matrix consisting of a watery mixture of Aleppo pine's seeds. In vitro methods were used to characterize the safety, survival ability in typical conditions of the gastrointestinal tract, and adherence capacity to surfaces, antimicrobial, and antioxidant activities. Strains belonged to the group and showed no DNase, hemolytic, and gelatinase activities. In addition, their susceptibility to most of the tested antibiotics, satisfied some of the safety prerequisites for their potential use as probiotics. All the strains tolerated low pH, gastrointestinal enzymes, and bile salts. They displayed a good antibacterial activity and antibiofilm formation against 10 reference bacterial pathogens, especially when used as a cell-free supernatant. Furthermore, the lactic acid bacteria (LAB) strains inhibited the growth of and Finally, they had good antioxidant activity, although depending on the strain. Overall, the results of this work highlight that zgougou represents an important reservoir of potentially probiotic LAB. Obviously, future studies should be addressed to confirm the health benefits of the LAB strains.
存在于发酵食品中的微生物是食用此类食品与人类健康之间的主要联系。尽管一些发酵食品是潜在益生菌的储存库,但仍有几种食品尚未被探索。本研究旨在表征从zgougou中分离出的乳酸菌的益生菌潜力,zgougou是一种由阿勒颇松种子的水性混合物组成的发酵基质。采用体外方法来表征其安全性、在胃肠道典型条件下的存活能力、对表面的黏附能力、抗菌和抗氧化活性。属于该组的菌株未显示出DNA酶、溶血和明胶酶活性。此外,它们对大多数测试抗生素的敏感性满足了其作为益生菌潜在用途的一些安全前提条件。所有菌株都能耐受低pH值、胃肠道酶和胆盐。它们对10种参考细菌病原体表现出良好的抗菌活性和抗生物膜形成能力,尤其是用作无细胞上清液时。此外,乳酸菌(LAB)菌株抑制了 和 的生长。最后,它们具有良好的抗氧化活性,不过这取决于菌株。总体而言,这项工作的结果突出表明zgougou是潜在益生菌LAB的重要储存库。显然,未来的研究应致力于证实LAB菌株对健康的益处。