Results 91 to 100 of about 19,809 (222)

Effect of genotype and extraction method on polyphenols content, phenolic acids, and flavonoids of olive leaves (Olea europaea L. subsp. europaea)

open access: yesInternational Journal of Plant Based Pharmaceuticals, 2021
Polyphenol’s extraction varied according to various factors. In this study, the effect of genotype and method of polyphenols extraction were investigated using leaves of two cultivated and two wild olive varieties and four hydromethanolic extraction ...
Salma Guebebia   +5 more
doaj  

Regioselectivity in the Ring Opening of Epoxides for the Synthesis of Aminocyclitols from D-(-)-Quinic Acid

open access: yesMolecules, 2012
Efficient syntheses of four aminocyclitols are reported. Each synthesis is accomplished in eight steps starting from D-(-)-quinic acid. The key step involves a highly regioselective ring opening of epoxides by sodium azide.
Shu-Yu Yang, Tzenge-Lien Shih
doaj   +1 more source

Phytochemical content, antioxidant and antibacterial properties of Typhonium flagelliforme cultivated via soil and hydroponic methods

open access: yesJSFA reports, Volume 6, Issue 5, Page 179-192, May 2026.
Abstract Background Typhonium flagelliforme is a medicinal herb in the Araceae family, widely distributed in Southeast Asia. This study aimed to evaluate the effects of hydroponic and soil‐based cultivation systems on the phytochemical content and bioactivity of T. flagelliforme. Results Using liquid chromatography‐mass spectrometry (LC‐MS) analysis, 9
Yen Ning Lee   +4 more
wiley   +1 more source

Formal total syntheses of classic natural product target molecules via palladium-catalyzed enantioselective alkylation [PDF]

open access: yes, 2014
Pd-catalyzed enantioselective alkylation in conjunction with further synthetic elaboration enables the formal total syntheses of a number of “classic” natural product target molecules. This publication highlights recent methods for setting quaternary and
Behenna, Douglas C.   +11 more
core   +3 more sources

Characterization of acyl-quinic acids and antioxidant capacity in defective green coffee beans using LC-HRMS

open access: yesFood Chemistry: X
: A significant proportion of defective green coffee beans (GCBs) are produced during the pre- and post-harvesting processes, reducing overall bean quality.
Kwan Joong Kim, Dae-Ok Kim
doaj   +1 more source

The C2H2‐GGAT Regulatory Module Fine‐Tunes Glutamate Homeostasis to Improve Fruit Flavour and Enhance Disease Resistance in Peach

open access: yesPlant Biotechnology Journal, Volume 24, Issue 5, Page 3282-3295, May 2026.
ABSTRACT Free amino acids (FAAs) play a fundamental role in determining fruit quality and stress adaptation, yet their genetic regulation remains poorly understood. Through an integrated approach combining metabolomic and sensory analyses of 120 peach (Prunus persica) hybrids, we identified glutamate as a key metabolite linking FAA content to umami ...
Yike Su   +8 more
wiley   +1 more source

The Comparison of the Profile of Phenolic Compounds in Noni (Morinda citrifolia L.) Fruit by Different Drying Methods

open access: yesFoods
In this study, the compositional shifts in free and bound phenolic compounds of Morinda citrifolia L. (Noni) processed by different drying methods were investigated. Twenty-seven phenolic compounds, predominantly rutin and quinic acid, were discovered in
Qianxin Li   +6 more
doaj   +1 more source

Evaluation of cytotoxic and apoptogenic effects of chlorogenic acid derivatives from Berberis vulgaris fruits on human breast adenocarcinoma cell line [PDF]

open access: yesResearch Journal of Pharmacognosy, 2017
Background and objectives: Because of the importance of breast cancer as a first cause of morbidity and mortality among females, also the limitation of chemotherapy and based on literature of the use of herbal medicines against cancer, the current study ...
E. Ghafourian   +6 more
doaj  

HPLC-ESI-MS/MS analysis of oxidized di-caffeoylquinic acids generated by metalloporphyrin-catalyzed reactions

open access: yesQuímica Nova, 2008
This paper reports an HPLC-ESI-MS/MS investigation on the oxidation of 3,5- and 4,5- dicaffeoylquinic acid using iron(III) tetraphenylporphyrin chloride as catalyst. Two major mono-oxidised products of the quinic acid moiety have been identified for both
Michel D. Santos   +2 more
doaj   +1 more source

Untargeted Metabolomics Coupled With Machine Learning Unravels Crop‐Specific Versus Generalized Effects of Biostimulants in Cucumber, Pepper, and Tomato

open access: yesPhysiologia Plantarum, Volume 178, Issue 3, May/June 2026.
ABSTRACT In recent years, agricultural practices have shifted toward sustainability, aiming to reduce the use of agrochemicals and rely more on bio‐based solutions. However, the effectiveness of these latter suffers from inconsistency. Understanding how different crops respond to biostimulants, instead of referring to a specific trial or crop, is a ...
Hajar Salehi   +2 more
wiley   +1 more source

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