Flavonoids are very common and widespread secondary plant metabolites. They have a
wide range of biological and physiological activities and serve as chemotaxonomic marker …

Hypericum perforatum L.(Hypericaceae) is a perennial herb that is commonly known as St.
John's Wort. The plant has been valued for its important biological and chemical …

Advances in the flavonoid field have been nothing short of spectacular over the last 20
years. While the medical field has noticed flavonoids for their potential antioxidant …

Flavonoids receive considerable attention in the literature, specifically because of their
biological and physiological importance. This review focuses on separation and detection …

Hypericum perforatum Linn (St. John's wort) is a popular and widespread medicine in Syria,
which is used for a wide range of conditions, including gastrointestinal diseases, heart …

The use of herbs for treating various ailments dates back several centuries. Usually, herbal
medicine has relied on tradition that may or may not be supported by empirical data. The …

The newly established hyphenated instrumentation of LC/DAD/SPE/NMR and LC/UV/(ESI)
MS techniques have been applied for separation and structure verification of the major …

Covering: up to October 2005 Microorganisms and in particular actinomycetes and
microfungi are known to produce a vast number of bioactive secondary metabolites. For …

A comparison is presented of product ion mass spectra of protonated and deprotonated
molecules of kaempferol-3-O-glucoside, quercitin-3-O-glucoside (isoquercitrin), quercitin-3 …

The present paper describes matrix‐free laser desorption/ionisation mass spectrometric
imaging (LDI‐MSI) of highly localized UV‐absorbing secondary metabolites in plant tissues …