Background: Vitamins are chemical compounds whose derivatives are involved in vital
metabolic pathways of all living organisms. The complete endogenous biosynthesis of …

This review describes the application of thin-layer chromatography (TLC) and high-
performance thin-layer chromatography (HPTLC) in the separation and identification of …

The sensing application of cellulose nanocrystals (CNCs) is fascinating. CNCs can't produce
electrical or optical signals directly. Different from published sensing methods, a novel and …

The advantages of using columns packed with stationary phases having a composition
gradient so that retention factors increase toward the outlet and eluting them with an …

Although there are many simple thin-layer chromatography (TLC) separations, many more
are complex and involve more than a few components, that means having to use special …

The most important advances in planar chromatography published between November 1,
2011 and November 1, 2013 are reviewed in this paper. Included are an introduction to the …

In this work, a series of experiments on the retention of B1 (riboflavin), B2 (thiamine) and B3
(nicotinic acid) vitamins in the HILIC and RPLC conditions have been performed involving …

Stationary phase gradients formed in a single column housing or by serially connected
columns are the most recently explored subset of non-uniform chromatography. Such non …

The chromatography techniques are partially characterized by presence of two phases
(stationary and mobile), which allows identification, semi-quantification or quantification of …

Surfaces that exhibit a gradual change in their chemical and/or physical properties are
termed as surface gradients. Based on the changes in properties they are classified either …