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Recently, consumers are paying much more attention to natural products from plants, mainly because of the general feeling that natural components are safe. The present research was undertaken in order to evaluate the potential application of licorice roots extract as a nutritional plant used in food industry. Chemical compositions, antimicrobial potency, and the potential antioxidant capacities of licorice root extract were determined. Furthermore, phytochemical, identification of bioactive compounds and antitumor potentials on breast cancer cell MDA-MB-361 was also carried out. The results revealed that the most licorice root contents were sugars and fiber (40.47 and 38.41 g/100g, respectively), and calcium was the main element (112.2 mg/100g). The licorice aqueous and ethanol extracts showed broad spectrum against tested microorganisms Gram positive and negative bacteria, yeast and fungi. Licorice aqueous extract showed strong antioxidant potential with IC 50 (29.92±2.43 mg/g) and exhibited considerable proapoptotic property on breast cancer cell, due to its high concentration of total phenolic compounds in the extract. Gallic acid was observed to be the most abundant phenolic component in licorice root aqueous extract. The sensory evaluation revealed that the fortified licorice yoghurt was preferred. Obtained results indicate that the tested licorice extract could have pharmaceutical potential in prevention of breast cancer and can be recommended as natural antioxidant and antimicrobial agent to be used in food industrial.

Helicobacter pylori is a common human pathogen infecting about 30 % of children and 60 % of adults worldwide. It is responsible for diseases such as gastritis, peptic ulcer and gastric cancer. H. pylori treatment based on antibiotics with proton pump inhibitor, but therapy failure is shown to be higher than 20 % and is essentially due to an increasing in prevalence of antibiotic-resistant bacteria, which has led to the search for alternative therapies. In this study, we discuss the usage of natural extracts mixture as alternative or complementary agents in controlling H. pylori infection so here, we focused on the plant extracts of (Cloves, Pepper, Cumin, Sage, Pomegranate peel, Ginger, Myrrh and Licorice). To that end, Phytochemical constituents detection like Tannins, Glycosides, Alkaloids, Flavonoids, Terpenoids, Saponins, Phenolic compounds, Reducing sugars, Volatile oils, Amino acids and Proteins was demonstrated. Each plant extract was examined individually or in combination for its antimicrobial activity against H. pylori. Out of the used extracts, four mixes were prepared and tested against H. pylori. The antibacterial activities of the four mixes, represented by the diameter of inhibition clear zone, recorded 21, 39, 23 and 28 mm. The most potent mix (mix2) was chosen and mixed with baby milk as a new combination for H. pylori infections treatment in babies.

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