Results 41 to 50 of about 151,431 (341)

Compositional Changes in Grapes and Leaves as a Consequence of Smoke Exposure of Vineyards from Multiple Bushfires across a Ripening Season

open access: yesMolecules, 2021
The negative effects of smoke exposure of grapes in vineyards that are close to harvest are well documented. Volatile phenols in smoke from forest and grass fires can contaminate berries and, upon uptake, are readily converted into a range of ...
WenWen Jiang   +4 more
doaj   +1 more source

Mutations in UDP-Glucose:Sterol Glucosyltransferase in Arabidopsis Cause Transparent Testa Phenotype and Suberization Defect in Seeds [PDF]

open access: yes, 2009
In higher plants, the most abundant sterol derivatives are steryl glycosides (SGs) and acyl SGs. Arabidopsis (Arabidopsis thaliana) contains two genes, UGT80A2 and UGT80B1, that encode UDP-Glc:sterol glycosyltransferases, enzymes that catalyze the ...
Auer, Manfred   +14 more
core   +5 more sources

Identification and Quantification of Flavanol Glycosides in Vitis vinifera Grape Seeds and Skins during Ripening

open access: yesMolecules, 2018
Monomeric and dimeric flavanol glycosides were analyzed in Vitis vinifera grapes and seeds during ripening. An analytical method using ultra-high performance liquid chromatography coupled with a triple quadrupole mass spectrometry (UHPLC-ESI-QQQ-MS/MS ...
Marie Zerbib   +3 more
doaj   +1 more source

Facile Synthesis of Saikosaponins

open access: yesMolecules, 2021
Saikosaponin A (SSa) and D (SSd) are typical oleanane-type saponins featuring a unique 13,28-epoxy-ether moiety at D ring of the aglycones, which exhibit a wide range of biological and pharmacological activities.
Ziqiang Wang   +4 more
doaj   +1 more source

Natural Toolbox–Chemical Engineering Aspect and High‐Value Applications of Janus Cellulose Nanomaterials

open access: yesAdvanced Science, EarlyView.
The Tai Ji symbol from China represents the co‐existence of two opposite substances, similar to quantum entanglement. The term Janus comes from ancient Roman religion and mythology. Janus, the god of beginnings, transitions, etc., has two faces, symbolizing duality. Janus cellulose nanomaterials show structural duality.
Yu Zhao   +6 more
wiley   +1 more source

Oceanalin B, a Hybrid α,ω-Bifunctionalized Sphingoid Tetrahydroisoquinoline β-Glycoside from the Marine Sponge Oceanapia sp.

open access: yesMarine Drugs, 2021
Oceanalin B (1), an α,ω-bipolar natural product belonging to a rare family of sphingoid tetrahydoisoquinoline β-glycosides, was isolated from the EtOH extract of the lyophilized marine sponge Oceanapia sp.
Tatyana N. Makarieva   +6 more
doaj   +1 more source

Structure and stereochemistry of the base excision repair glycosylase MutY reveal a mechanism similar to retaining glycosidases. [PDF]

open access: yes, 2015
MutY adenine glycosylases prevent DNA mutations by excising adenine from promutagenic 8-oxo-7,8-dihydroguanine (OG):A mismatches. Here, we describe structural features of the MutY active site bound to an azaribose transition state analog which indicate a
Cao, Sheng   +6 more
core   +2 more sources

Evolution of Flavanol Glycosides during Red Grape Fermentation

open access: yesMolecules, 2018
Monomeric and dimeric flavanol glycosides were quantified by UHPLC-MRM in Syrah (SYR) and Grenache (GRE) grapes and in their corresponding wines for the first time.
Marie Zerbib   +4 more
doaj   +1 more source

The SlDOF9‐SlSWEET17 Module: a Switch for Controlling Sugar Distribution Between Nematode Induced Galls and Roots in Tomato

open access: yesAdvanced Science, EarlyView.
Root‐knot nematode (RKN) disease seriously affects the yield and quality of vegetable crops. SlDOF9‐SlSWEET17 model helps plants resist RKN infection during early stage by switching off the sugar transport capacity of other SlSWEET proteins that are hijacked by RKNs.
Xiaoyun Wang   +14 more
wiley   +1 more source

Análise de imagem para determinação do teor de saponina em quinoa Image analysis to determinate the saponin content in quinoa

open access: yesPesquisa Agropecuária Brasileira, 2004
Um grupo de sementes lavadas e 35 acessos de quinoa (Chenopodium quinoa Willd) foram avaliados pelo método de coluna de espuma e sua coloração foi decomposta pelo modelo RGB (R, vermelho; G, verde; B, azul) com o objetivo de avaliar a influência do teor ...
Luiz Augusto Copati Souza   +2 more
doaj   +1 more source

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