Browsing by Author "Colauto, Nelson Barros"
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- Antimicrobial activity, chemical composition and cytotoxicity of: Lentinus crinitus basidiocarpPublication . Bertéli, Míria B.D.; Barros, Lillian; Reis, Filipa S.; Ferreira, Isabel C.F.R.; Glamočlija, Jasmina; Soković, Marina; Valle, Juliana Silveira do; Linde, Giani Andrea; Ruiz, Suelen Pereira; Colauto, Nelson BarrosLentinus crinitus (L.) Fr. (Basidiomycota: Polyporales) is a wild mushroom with several biotechnological applications; however, there are few studies on its chemical composition and antimicrobial activity. Therefore, this study aims to evaluate the chemical composition, cytotoxicity, and antimicrobial activity of L. crinitus basidiocarp. For that, its nutritional value (AOAC procedures) and its composition in some hydrophilic and lipophilic compounds (chromatographic techniques) were assessed. Moreover, the potential hepatotoxic effects were evaluated using a primary cell culture obtained from porcine liver, and its growth inhibitory capacity was also evaluated against four human tumour cell lines (spectrophotometric assays). The antimicrobial activity was evaluated by microdilution against eight bacteria and fungi. The basidiocarp has a high content of carbohydrates and, therefore, a relatively high energetic value. It is also rich in soluble sugars, β-tocopherol, phenolic acids, mainly p-hydroxybenzoic acid, and organic acids, mainly malic acid. L. crinitus did not show cytotoxicity in non-tumour cells, but it did not inhibit the growth of human tumour cell lines either. The basidiocarp has a wide antimicrobial activity, inhibiting the growth of different species of bacteria and fungi. It showed minimum bactericidal and fungicidal concentration values similar to or lower than those verified by commercial antibiotics or food additives used as preservatives. The antimicrobial activity was more evident against Listeria monocytogenes, Salmonella enterica, and Penicillium ochrochloron, followed by Aspergillus ochraceus and Trichoderma viride, when compared to the controls. The results obtained in this study showed that L. crinitus basidiocarp has great potential to be used by the industry without toxicity risks.
- Basidiocarp structures of Lentinus crinitus: an antimicrobial source against foodborne pathogens and food spoilage microorganismsPublication . Bertéli, Míria B.D.; Souza, Mariana Martins Magalhães de; Barros, Lillian; Ferreira, Isabel C.F.R.; Glamočlija, Jasmina; Soković, Marina; Dragunski, Douglas Cardoso; Valle, Juliana Silveira do; Ferreira, Ederlan de Souza; Pinto, Laise Cedraz; Souza, Carolina Oliveira de; Ruiz, Suelen Pereira; Linde, Giani Andrea; Colauto, Nelson BarrosLentinus crinitus basidiocarps are an alternative to antimicrobials, but the stipe (24% basidiocarp) is discarded even with potential antimicrobial activity. This study evaluated the antimicrobial activity of L. crinitus basidiocarp pileus and stipe extracts against foodborne pathogens and food spoilage microorganisms. Basidiocarps of L. crinitus were grown in sugarcane bagasse and rice husks and the pileus and stipe methanolic extract was analyzed by broth microdilution method for antimicrobial activity against eight bacteria and eight fungi. The minimum bactericidal concentration values for pileus and stipe ranged from 0.40 to 0.50 mg mL− 1, for streptomycin from 0.10 to 0.50 mg mL− 1, and for ampicillin from 0.40 to 1.20 mg mL− 1. The minimum fungicidal concentration values for pileus and stipe ranged from 0.06 to 0.60 mg mL− 1, for bifonazole from 0.20 to 0.25 mg mL− 1, and for ketoconazole from 0.30 to 3.50 mg mL− 1. Extracts had bacteriostatic, bactericidal, fungistatic and fungicidal activity against all microorganisms, but with greater efficiency and specificity for some microorganisms. Both pileus and stipe are promising and sustainable alternatives for use in food, agricultural, and pharmaceutical industries.
- Cytotoxicity and anti-inflammatory activities of Gallesia integrifolia (Phytolaccaceae) fruit essential oilPublication . Bortolucci, Wanessa C.; Raimundo, Keila Fernanda; Fernandez, Carla Maria Mariano; Calhelha, Ricardo C.; Ferreira, Isabel C.F.R.; Barros, Lillian; Gonçalves, José Eduardo; Linde, Giani Andrea; Colauto, Nelson Barros; Gazim, Zilda CristianiThe chemical composition of Gallesia integrifolia fruits essential oil was obtained by hydrodistillation using a modified Clevenger apparatus was investigated by gas chromatography coupled to mass spectrometry (GC/MS). In addition, the cytotoxicity activity against human tumor cell lines MCF-7 (breast adenocarcinoma), NCI-H460 (large cell lung carcinoma), HeLa (cervical carcinoma), and HepG2 (hepatocellular carcinoma), and non-tumor PLP2 (porcine liver primary cells) as well as the anti-inflammatory action was proposal. The compounds were predominantly organosulfates (2,8-dithianonane, dimethyl trisulfide, and lenthionine). Anti-inflammatory activity that provides 50% inhibition of nitric oxide production (55 µg/mL) of essential oil of the fruits. It also presents cytotoxic activity against MCF-7 (GI50 = 66 µg/mL), NCI-H-460 (GI50 = 147 µg/mL), HeLa (GI50 = 182 µg/mL) and HepG2 (GI50 = 240 µg/mL). The essential oil is more active in tumor cells than in non-tumor cells and the GI50 values for essential oil reported in our work support future studies.
- Lentinus crinitus basidiocarp stipe and pileus: chemical composition, cytotoxicity and antioxidant activityPublication . Bertéli, Míria B.D.; Oliveira Filho, Olavo B.Q.; Freitas, Janyeli D.S.; Bortolucci, Wanessa C.; Silva, Gustavo R.; Gazim, Zilda Cristiani; Lívero, Francislaine A.R.; Lovato, Evellyn C.W.; Valle, Juliana S.; Linde, Giani Andrea; Barros, Lillian; Reis, Filipa S.; Ferreira, Isabel C.F.R.; Paccola-Meirelles, Luzia D.; Colauto, Nelson BarrosLentinus crinitus is a wild fungus, which produces mushrooms consumed by some Amazonian Indians. Besides, it is recognized for its diverse biological activities and biotechnological applications. However, there are few reports with limited information on basidiocarp chemical composition and cytotoxicity. Our study determined and evaluated the chemical composition, cytotoxicity, and antioxidant activity of L. crinitus pileus and stipe separately. Chromatographic methods were used to evaluate basidiocarp chemical composition. Cytotoxicity was verified using a cell culture from porcine liver and against a panel of human tumor cells from different models. Antioxidant activity was assessed by different in vitro methods. The pileus had higher levels of protein, ash, tocopherols, and organic acids, mainly malic acid, than the stipe. The stipe revealed higher contents of carbohydrates, energy, soluble sugars, and phenolic acids, mostly p-hydroxybenzoic acid. L. crinitus basidiocarp has mainly trehalose as soluble sugar, and less than 1% fat being ~60% polyunsaturated fatty acids (mostly linoleic and oleic acids), and ~13% saturated fatty acids (mostly palmitic acid). L. crinitus revealed high antioxidant activity for most methods and no cytotoxic activity against tumor and non-tumor cells. L. crinitus basidiocarp can be considered a functional food with applicability in food, cosmetic, and pharmaceutical industries. Graphic abstract: [Figure not available: see fulltext.]
- Light conditions affect the growth, chemical composition, antioxidant and antimicrobial activities of the white-rot fungus Lentinus crinitus mycelial biomassPublication . Halabura, Marisangela Isabel Wietzikoski; Avelino, Katielle Vieira; Araújo, Nelma Lopes; Kassem, Adma Soraia Serea; Seixas, Flávio Augusto Vicente; Barros, Lillian; Fernandes, Ângela; Liberal, Ângela; Ivanov, Marija; Soković, Marina; Linde, Giani Andrea; Colauto, Nelson Barros; Valle, Juliana Silveira doThe mycelial biomass of basidiomycetes is a promising source of compounds and represents an alternative for industrial and biotechnological applications. Fungi use light as information and hold photoresponse mechanisms, in which sensors respond to light wavelengths and regulate various biological processes. Therefore, this study aimed to investigate the effects of blue, green, and red lights on the growth, chemical composition, and antioxidant and antimicrobial activity of Lentinus crinitus mycelial biomass. The chemical composition of the mycelial biomass was determined by chromatographic methods, antioxidant activity was analyzed by in vitro assays, and antimicrobial activity was investigated by the microdilution assay. The highest mycelial biomass yield was observed under blue-light cultivation. Many primordia arose under blue or green light, whereas the stroma was formed under red light. The presence of light altered the primary fungal metabolism, increasing the carbohydrate, tocopherol, fatty acid, and soluble sugar contents, mostly mannitol, and reducing the protein and organic acid concentrations. Cultivation under red light increased the phenol concentration. In contrast, cultivation under blue and green lights decreased phenol concentration. Benzoic and gallic acids were the main phenolic acids in the hydroalcoholic extracts, and the latter acids increased in all cultures under light, especially red light. Mycelial biomass cultivated under red light showed the highest antioxidant activity in the 2,2-diphenyl-1-picrylhydrazyl (DPPH) assay. The ferric reducing antioxidant power (FRAP) method showed that all light wavelengths increased the antioxidant activity of mycelial biomass, with the highest value under red light. Moreover, the β-carotene/linoleic acid co-oxidation (BCLA) assay demonstrated that the antioxidant activity was affected by light cultivation. Mycelial biomass grown under all conditions exhibited antibacterial and antifungal activities. Thus, mycelial biomass cultivation of L. crinitus under light conditions may be a promising strategy for controlling the mycelial chemical composition and biomass yield.
- Pachira aquatica: biological activity and chemical composition of leaves, flowers, and seedsPublication . Rahal, Isabelle Luiz; Dias, Angelica Barbosa; Canonico, Gabriela Catuzo Silva; Vieira, Marisa Cássia de Araújo Bento; Ayob, Rhaira Fernanda Casalvara; Gonçalves, José Eduardo; Colauto, Nelson Barros; Linde, Giani Andrea; Mandim, Filipa; Vaz, Josiana A.; Barros, Lillian; Valle, Juliana Silveira do; Gazim, Zilda CristianiThe chemical composition of Pachira aquatica crude extracts flowers, leaves, and seeds was obtained by UHPLC-ESI/qTOF and GC/MS. The antiproliferative activity was evaluated against the human tumour cell lines AGS (gastric), CaCo-2 (colorectal), MCF-7 (breast), and NCI-H460 (lung). The anti-inflammatory and cellular antioxidant activities were also studied. Flavonoids, phenolic acids, coumarins, and saturated fatty acids were identified in the samples. The concentration of extracts responsible for inhibiting 50% of nitric oxide production ranged from (149 to > 400 µg mL−1). Antiproliferative activity against the tumour cell lines was: AGS (GI50 175 to > 400 µg mL−1), Caco-2 (GI50 215 to > 400 µg mL−1), MCF7 (GI50 232 to > 400 µg mL−1) and NCI-H460 (GI50 208 to > 400 µg mL−1). Cellular antioxidant activity remained between 73% to > 2000%. The selectivity index (SI) ranged from 1.00 to 2.78, indicating low antiproliferative activity.