Growth Promoting Activity of <i>Annona muricata</i> L. Leaf Extracts on <i>Lactobacillus casei</i>
2022
Nimcy Noemí Meza-Gutiérrez | Paola Magallón-Servín | Rosendo Balois-Morales | Iza Fernanda Pérez-Ramírez | Graciela Guadalupe López-Guzmán | Guillermo Berumen-Varela | Pedro Ulises Bautista-Rosales
Soursop leaves are a source of phytochemical compounds, such as phenolic acids, flavonoids, hydrolyzable tannins, and acetogenins. These compounds can have several types of biological activities. Lactic acid bacteria can uptake phenolic compounds present in plants or fruits. The aim of the present work was to investigate the <i>in vitro</i> effect of hexane, acetone, methanolic, and aqueous extracts of soursop leaves (<i>Annona muricata</i> L.) on the growth, motility, and biofilm formation of <i>Lactobacillus casei</i>, and to determine compounds related to growth. The minimum concentration promoting growth, motility (swimming, swarming, and twitching), and biofilm-forming capacity (crystal violet) were evaluated. The results showed the growth-promoting capacity of acetone and aqueous extracts at low doses 25–50 mg/L, and an inhibition in the four extracts at higher doses of 100 mg/L. The <i>L. casei</i> growth is related to ellagic acid, quercetin rhamnoside, kaempferol dihexoside, quercetin hexoside, secoisolariciresinol, and kaempferol hexoside-rhamnoside. Hexane extract increased the three types of motility, while aqueous maintained swimming and twitching motility similar to control. The four extracts inhibited the biofilm formation capacity.
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