Maria da Conceição Menezes Torres

Prof. Dr. Maria da Conceição Menezes Torres

orcid

Research Focus & Metrics

Academic Career Length

12Years (2015-Present)

(Calculated once Scilit publication data is synced: current year − year of first publication + 1)

Representative Publications

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16 April 2015 in Journal of Natural Products
Verified
Journal Article
Closed access
ESEvelyne A. Santos
Evelyne A. Santos
AQAmanda L. Quintela
Amanda L. Quintela
EFElthon G. Ferreira
Elthon G. Ferreira
TSThiciana S. Sousa
Thiciana S. Sousa
FPFrancisco das Chagas Lima Pinto
Francisco das Chagas Lima Pinto
LCLeticia Costa-Lotufo
Leticia Costa-Lotufo

7 March 2025 in Pharmaceuticals
Verified
Journal Article
Open access
PDF file
TGTaynah Pereira Galdino
Taynah Pereira Galdino
LOLucas Cordeiro de Oliveira
Lucas Cordeiro de Oliveira
MLMateus Araújo da luz
Mateus Araújo da luz
RJRaquel A. Jesus
Raquel A. Jesus
ELEunice Lima
Eunice Lima
MFMarcus Vinícius Lia Fook
Marcus Vinícius Lia Fook
The growing body of evidence supporting the therapeutic efficacy of psychoactive substances, like psilocybin, has driven significant interest in recent decades due to their low toxicity and potential applications in treating various mental health disorders. However, producing pharmaceutical-grade psilocybin remains challenging, with three primary approaches: chemical synthesis, biosynthesis, and extraction from Psilocybe mushroom fruiting bodies. This systematic review evaluates the extraction and quantification methods for psilocybin and psilocin, aiming to contribute to the development of standardized protocols that ensure compound quality and purity. A total of 25 relevant studies were selected from an initial pool of 9152 publications indexed in platforms such as Scopus, ScienceDirect, Web of Science, and PubMed. The findings indicate that both the extraction method and the choice of mushroom species significantly influence compound yields. Ultrasonic bath extraction was identified as the most efficient technique, particularly for species including Psilocybe cyanescens and Psilocybe cubensis. High-performance liquid chromatography (HPLC) was the most-used method for identifying and quantifying these compounds. Furthermore, polar solvents were critical for effective solubilization, with parameters such as temperature, solvent-to-material ratio, and extraction time playing key roles in optimizing yields. This review serves as a key scientific reference for advancing research, enhancing analytical precision, and ensuring reproducibility through the standardization of extraction and quantification protocols.

1 July 2025 in Pharmaceuticals
Verified
Journal Article
Open access
PDF file
MLMateus Araújo Araújo da luz
Mateus Araújo Araújo da luz
HGHellen V. S. Guedes
Hellen V. S. Guedes
ABAntônio B. M. Bisneto
Antônio B. M. Bisneto
RJRaquel A. de Jesus
Raquel A. de Jesus
TGTaynah Pereira Galdino
Taynah Pereira Galdino
MTMaria da Conceição Menezes Torres
Maria da Conceição Menezes Torres
The Psilocybe genus is known for producing tryptamine alkaloids, specifically the compounds psilocybin and psilocin, which have shown antidepressant and anxiolytic potential. The presence of these alkaloids makes Psilocybe mushrooms promising sources of molecules with potential applications in the treatment of mental disorders. To explore this, a bibliographic study was conducted with the aim of synthesizing published data regarding the biological properties and chemical composition of Psilocybe mushrooms. Searches were performed on indexing platforms, and the articles found were processed using StArt software. These articles were then classified by score and selected based on inclusion and exclusion criteria. This survey yielded a total of 74 articles, and among them, 66 works showed the presence of psilocybin and/or psilocin alkaloids, indicating the psychoactivity of the mushrooms, and 4 works demonstrated the antimicrobial and antioxidant activities of the extract from certain species of the genus. Additionally, 37 chemical compounds were identified across the genus, 23 of which are alkaloids. Data regarding the temporal and chemical stability of these compounds were also observed, which could help optimize the handling of materials that contain indole alkaloids. Therefore, it is evident that species of this genus remain underexplored in terms of chemical diversity; only compounds classified as alkaloids, terpenoids and phenolic compounds were found, and, in total, only 36 compounds in a study range time of 67 years. Furthermore, most studies focused primarily on evaluating the tryptamine alkaloids responsible for the psychoactivity of the mushrooms, without any study focusing on demonstrating the biological activity of isolated compounds against any pathological factor, except for studies relating the whole extract to larvicidal, antimicrobial and antioxidant potential. So, this review provides a general overview of the molecules isolated from the genus and their biological activities and also suggests that researchers working with these mushroom species could focus their efforts on isolating new compounds and evaluating other types of biological activities that can improve the knowledge of mushrooms’ alternative applications.

10 July 2025 in ACS Omega
Verified
Journal Article
Open access
TGTaynah Pereira Galdino
Taynah Pereira Galdino
LOLucas Cordeiro de Oliveira
Lucas Cordeiro de Oliveira
MLMateus A. Luz
Mateus A. Luz
RBRaquel Costa Barbosa
Raquel Costa Barbosa
MTMaria da Conceição Menezes Torres
Maria da Conceição Menezes Torres
MFMarcus Vinícius Lia Fook
Marcus Vinícius Lia Fook
Innovative therapies, such as psilocybin-assisted psychotherapies, hold great promises for treating anxiety, depression, and various other mental health disorders, addressing some of the challenges faced by conventional psychiatric medicine. This study focuses on developing and validating an HPLC-DAD methodology for detecting psilocybin and psilocin in extracts from psychedelic mushrooms intended for medicinal use. The methodology to has been validated following the guidelines of RDC No. 166/2017 from the Brazilian National Health Surveillance Agency (ANVISA). Utilizing a PerkinElmer C18 column (150.0 mm length × 4.6 mm internal diameter × 5 μm particle size), the gradient method employed ultrapure Milli-Q water (mobile phase A) and acetonitrile (mobile phase B), both acidified to 0.3% with formic acid (starting at a ratio of 95:5 v/v), with a flow rate of 0.8 mL/min over 18 min and an injection volume of 15 μL. The column temperature was maintained at 30 °C, and the analysis was conducted at a wavelength of 266 nm. The limit of detection (LOD) and limit od quantification (LOQ) values for psilocybin were 1.58 and 4.78 mg/L, respectively, while for psilocin, they were 1.70 and 5.17 mg/L. The method’s accuracy showed recovery intervals for psilocybin ranging from 80 to 120% and for psilocin from 98 to 116%. Accurately determining the content of psilocybin (2.57%) and psilocin (0.16%) is essential for their application as pharmaceutical compounds. This methodological rigor ensures that these substances can be reliably used in therapeutic contexts, underscoring the importance of precise quantification in developing safe and effective medical treatments.

3 October 2023 in Pharmaceuticals
Verified
Journal Article
Open access
PDF file
JRJosé Filipe Bacalhau Rodrigues
José Filipe Bacalhau Rodrigues
JQJoão Vitor Souto Queiroz
João Vitor Souto Queiroz
RMRebeca P. Medeiros
Rebeca P. Medeiros
RSRafaela O. Santos
Rafaela O. Santos
DFDjair A. Fialho
Djair A. Fialho
SASolomon Kweku Sagoe Amoah
Solomon Kweku Sagoe Amoah
A lack of control over blood loss can have catastrophic implications, including death. Although several hemostatic medications have been employed to reduce bleeding, a vast majority of them are ineffective, expensive, or pose health risks to the patient. To overcome these constraints, chitosan-polyethylene glycol (CS-PEG) hemostatic gels loaded with ethanolic extract of Jatropha mollissima sap (EES) were prepared and their hemostatic, physicochemical, and cytotoxic properties were evaluated. The gels were produced by mixing CS with PEG (an external plasticizer) and EES. The phytochemical analysis revealed a significant concentration of total polyphenols and tannins content in the extract and catechin was identified as one of the key compounds of EES. Infrared spectroscopy analysis revealed the presence of EES in the gels, as well as the chemical interaction between CS and PEG. The gels were thermally stable between 25 and 37 °C (ambient and human body temperature range), had pseudoplastic deformation behavior (rheological properties preserved after shearing), were simple to inject (compression force 30 N), and were biocompatible. In vivo experiments showed that both CS-PEG-EES gels exhibited greater hemostatic action in preventing tail hemorrhage in Wistar rats, with decreased bleeding time and blood weight compared with unloaded CS-PEG gels (control groups) and Hemostank, a commercial product. However, the gel prepared with acetic acid was more efficient in controlling bleeding. These findings reveal that CS-PEG-EES gels can reduce hemorrhages and are a potent, simple, and safe hemostatic agent.

30 November 2025 in Chemistry & Biodiversity
Verified
Journal Article
Closed access
MSMaria E. N. Santos
Maria E. N. Santos
WQWallace A. M. Queiroz
Wallace A. M. Queiroz
WSWaldir M. Santos
Waldir M. Santos
BVBruno Oliveira de Veras
Bruno Oliveira de Veras
MSMárcia Vanusa da Silva
Márcia Vanusa da Silva
MTMaria da Conceição Menezes Torres
Maria da Conceição Menezes Torres