Results 1 to 10 of about 368,089 (290)

EXTRAÇÃO DO R-(+)-LIMONENO A PARTIR DAS CASCAS DE LARANJA: AVALIAÇÃO E OTIMIZAÇÃO DA VERDURA DOS PROCESSOS DE EXTRAÇÃO TRADICIONAIS

Química Nova
This article reports a study, performed in educational context, to increase the greenness of the extraction of R-(+)-limonene from orange peels. Protocols from the literature were evaluated with the green star (GS)metric and new protocols, based in them,
Tânia C. M. Pires, Maria Gabriela T. C. Ribeiro, Adélio A. S. C. Machado   +2 more
doaj   +1 more source

Green Analytical Chemistry: Principles, Challenges, Strategies and Assessment Tools

Records of Pharmaceutical & Biomedical Sciences
Green analytical chemistry (GAC) focuses on decreasing the adverse effects of analytical activities on human safety, human health, and environment by reducing the use of hazardous chemicals and waste generation in analytical procedures without ...
Dalia Elgendy, Ghada Hadad, Randa Moussa, Elsayed Ali   +3 more
doaj   +1 more source

Assessment of the Greenness of HPLC Methods Employing Common Detectors for Analysis of Caffeine in Pharmaceutical Dosage Forms

Journal of Chemistry
Caffeine, the world’s most widespread central nervous system stimulant, naturally exists in various plants species. Caffeine impacts several beneficial physiological functions; accordingly, caffeine is widely consumed from both herbal and pharmaceutical ...
Mohammed Alqarni, Ibrahim A. Naguib, Hassan Arida, Nawaf Abdullah Althagafi, Mahir Saleh Aboras, Khalid Amer Alshehri, Ahmed Saeed Alzahrani, Mohammed Salem Alsuwat, Heba-Alla H. Abd-ElSalam   +8 more
doaj   +1 more source

Vegetation-rainfall coupling as an indicator of ecosystem state in a heterogeneous landscape

Ecological Indicators, 2023
Coexisting vegetation types in tropical landscapes can respond in contrasting ways to rainfall, despite being in the same climatic envelope. Understanding such heterogeneity in vegetation-rainfall interactions is key for predicting how ecosystems might ...
Marcio B. Cure, Bernardo M. Flores, Caio R.C. Mattos, Rafael S. Oliveira, Marina Hirota   +4 more
doaj   +1 more source

Ultrasound-Assisted Extraction of Bioactive Compounds from Strawberry Pomace: Optimization and Bioactivity Assessment

Antioxidants
The growing production of strawberry-based foods generates large quantities of pomace, a phenolic-rich by-product with high valorization potential. This study aimed to optimize ultrasound-assisted extraction (UAE) of strawberry pomace and to evaluate the
Milena Terzić, Biljana Lončar, Mirjana Petronijević, Sanja Panić, Aleksandra Cvetanović Kljakić, Jelena Arsenijević, Gokhan Zengin, Slavica Ražić   +7 more
doaj   +1 more source

Development of Green RP-HPLC method for determination of sorafenib in film-coated tablets [PDF]

Makedonsko Farmacevtski Bilten
A new green RP-HPLC method for the determination of sorafenib in film-coated tablets was developed and validated. The chromatographic separation was carried on a LichroCART® 60 RP-select B column, using isocratic elution mode, with a mobile phase ...
Sanija Zulfikjari, Natalija Nakov, Hrisanta Godzo, Jelena Acevska, Zorica Arsova-Sarafinovska, Katerina Brezovska   +5 more
doaj   +1 more source

Green Spectrophotometric Method for the Determination of Tigecycline in Different Matrices [PDF]

Records of Pharmaceutical & Biomedical Sciences
This work presents a green, simple, validated colorimetric method for the determination of tigecycline in lyophilized powder and laboratory prepared pharmaceutical wastewater.
Noha Mansour, Alaa El-Gendy, Mary Wahba, Aziza Mostafa   +3 more
doaj   +1 more source

A green and robust LC–MS/MS bioanalytical method for sulopenem etzadroxil and probenecid: Optimization, validation, and pharmacokinetic application

Journal of Pharmaceutical and Biomedical Analysis Open
A novel, green, and robust Liquid chromatography–tandem mass spectrometry (LC–MS/MS) method was developed and validated for the simultaneous quantification of sulopenem etzadroxil and probenecid in rat plasma, with application to pharmacokinetic studies.
Niloufer Tasnim Khazi, Kumaraswamy Gandla, Lalitha Repudi   +2 more
doaj   +1 more source

Development and validation of a novel RP-HPLC method for determination of Remdesivir: Investigation of the greenness for the proposed method

Results in Chemistry
Remdesivir, a nucleotide prodrug of an adenosine analogue, exhibits antiviral activity against SARS-CoV-2 by binding to the viral RNA-dependent polymerase and disrupting viral replication.
Karthika Paul, B.H. Jaswanth Gowda, R.S. Chandan   +2 more
doaj   +1 more source

An innovative combination of Box-Behnken design and ecofriendly approaches for the simultaneous determination of aspirin, clopidogrel, atorvastatin and rosuvastatin in their fixed-dose combination tablets

BMC Chemistry, 2023
Three-levels Box-Behnken design was used in the experimental design approach for the optimization of chromatographic parameters to achieve the optimum resolution and sharp peak shape within a reasonable run time. A method that is sensitive, reliable, and
Eman A. Mostafa, Mohamed K. El‐Ashrey, Sally Tarek Mahmoud   +2 more
doaj   +1 more source