Victor Elias Mouchrek Filho Livres

The study focuses on the antioxidant properties of Ocimum citriodurum, revealing that rosmarinic acid is the predominant compound in its hydroalcoholic extract. Utilizing HPLC-MS, researchers identified seven chemical constituents and established an active potential of 0.547 for the extract's antioxidant activity. In vitro tests confirmed its efficacy with a 50% effective concentration of 50.53 mg/L against the DPPH method. Additionally, a Didactic Sequence was developed to teach about bioactive molecules and antioxidants, integrating findings with organic chemistry content.

The study investigates the essential oil of Aniba rosaeodora Ducke, highlighting its primary chemical component, linalool, which constitutes 63.16% of the oil and shows promise for pharmaceutical applications. Toxicity tests indicate a non-toxic profile, with an LC50 range of 582 to 282 mg L-1. The oil exhibits effective larvicidal activity against Aedes aegypti, with an LC50 of 41.07 mg L-1, and demonstrates significant antioxidant properties. These findings suggest its potential for application in pest control and health-related fields.

The study investigates the molluscicidal properties of essential oils from Syzygium cumini and Hymenaea courbaril, extracted through hydrodistillation and analyzed via Gas Chromatography-Mass Spectrometry. Toxicity tests using Artemia salina indicated both oils were nontoxic, with specific LC50 values for each. The molluscicidal assays revealed effective concentrations against Biomphalaria glabrata, suggesting these essential oils could serve as natural alternatives to combat schistosomiasis-carrying snails.

The study investigates the impact of drying Alpinia leaves on the properties of their essential oils, utilizing mathematical models to analyze the drying process. Results indicate significant variations in essential oil characteristics based on drying conditions, with 45 °C yielding optimal antimicrobial activity and lower toxicity. The findings highlight the importance of drying temperature in affecting the physicochemical and biological properties of essential oils, underscoring the need for further research to refine predictive models for drying processes.

The study focuses on the impact of drying Alpinia zerumbet leaves on the properties of their essential oils (EOs), utilizing mathematical models to analyze drying kinetics. Results indicated that drying at 45 °C yielded the most effective EOs, showcasing superior antimicrobial activity and low toxicity. The findings highlight the significance of drying temperature in affecting the physicochemical and biological characteristics of EOs, emphasizing the need for further research on optimal drying conditions and their influence on essential oil quality.

The study investigates the antimicrobial, antioxidant, and toxicity properties of essential oils from Hymenaea courbaril bark and Syzygium cumini leaves. Notably, H. courbaril's major component is -ocimene, while S. cumini contains isocaryophyllene. Both essential oils demonstrated strong antioxidant activity and toxicity against Artemia salina, alongside bactericidal effects against several pathogenic bacteria, including E. coli and S. aureus. The findings highlight the potential of these essential oils in combating harmful microorganisms.

The study investigates the larvicidal properties of essential oil and nanoemulsion derived from Coleus aromaticus Benth leaves against Aedes aegypti larvae. It reveals a significant phenolic content and promising antioxidant activity. The essential oil demonstrated larvicidal effects with an LC50 of 3.24 mg L-1, while the nanoemulsion exhibited even greater efficacy at 1.83 mg L-1. These findings suggest the potential of both products as biocontrol agents in combating Aedes aegypti, highlighting the market viability of the nanoemulsion.

The research investigates the chemical composition and larvicidal properties of microencapsulated essential oil from Citrus aurantium against Aedes aegypti. Extracted through hydrodistillation, the oil was characterized using GC-MS, revealing key components like (-)-Terpinen-4-ol and Caryophyllene oxide. The study employed the Folin-Ciocalteu method to measure phenolic content and determined the oil's lethality, finding an LC50 of 3.589 mg L-1. The findings suggest the essential oil's effectiveness as a potential agent for controlling mosquito populations.

The study investigates the chemical and biological properties of Ixora coccinea L. through hydroalcoholic extracts and fractions. Using high-performance liquid chromatography coupled with mass spectrometry (HPLC/MS), catechol was identified as the predominant component. The research assessed antioxidant, anti-inflammatory, and anti-arthritic activities, revealing effective concentrations (EC50) that indicate strong biological activity across all assays. The antioxidant activity showed EC50 values between 6.45 and 87.15 ppm, while anti-inflammatory and anti-arthritic activities ranged from 32.27 to 198.06 ppm and 10.76 to 66.02 ppm, respectively.

The study investigates the essential oil of Aniba rosaeodora, focusing on its chemical composition, toxicity, antioxidant potential, and effectiveness against Aedes aegypti larvae. Extracted via hydrodistillation, the oil predominantly contains -linalol at 63.16%, highlighting its pharmaceutical promise. Toxicity tests indicate it is non-toxic, while the oil demonstrates significant larvicidal activity with an LC50 of 41.07 mgL-1, along with notable antioxidant properties. These findings suggest its potential application in controlling mosquito populations.