G
Giuseppina Negri
Researcher at University of São Paulo
Publications - 83
Citations - 3170
Giuseppina Negri is an academic researcher from University of São Paulo. The author has contributed to research in topics: Propolis & DPPH. The author has an hindex of 26, co-authored 79 publications receiving 2713 citations. Previous affiliations of Giuseppina Negri include Universidade Bandeirante de São Paulo & Federal University of São Paulo.
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Traditional uses, chemistry and pharmacology of Croton species (Euphorbiaceae)
TL;DR: Pharmacological assays have frequently corroborated the traditional uses of Croton species, and a wide diversity of effects having been noticed, including hypolipidemic, hypoglycaemic, anti-oestrogen and anti-cancer.
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Origin and Chemical Variation of Brazilian Propolis.
TL;DR: Propolis research has uncovered potentialities of substances previously isolated from plants and has detected constituents of plant origin that would hardly be known otherwise.
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Recent development in preparation reactivity and biological activity of enaminoketones and enaminothiones and their utilization to prepare heterocyclic compounds
TL;DR: Enaminoketones and enaminonitriles have proven to be versatile building blocks for the synthesis of various heterocycles such as pyridine, pyrimidine and pyrrole derivatives.
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Seasonal variation, chemical composition and antioxidant activity of Brazilian propolis samples.
Érica Weinstein Teixeira,Dejair Message,Giuseppina Negri,Antonio Salatino,Paulo César Stringheta +4 more
TL;DR: No correlation was observed between antioxidant activity and either total phenolic contents or contents of artepillin C and other phenolic substances, as assayed by CG/MS analysis.
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Brazilian red propolis: unreported substances, antioxidant and antimicrobial activities
Adne Abbud Righi,Thiago R Alves,Giuseppina Negri,Lucas Miranda Marques,Henrique Breyer,Antonio Salatino +5 more
TL;DR: Structures are suggested for new substances never before seen in any kind of propolis, including the first report of 3,4,2',3'-tetrahydroxychalcone and a flavone C-glycoside in a propolis sample.