Spectrophotometry

Vitamin C content determination is not merely a matter of quantification, but rather a comprehensive analytical issue involving definition of the target analyte form, sample stabilization procedures, methodological selection, and the interpretive boundaries of analytical results. Because vitamin ...

Glutathione (GSH) is one of the most important low-molecular-weight thiols in cells. It participates in reactive oxygen species (ROS) detoxification, maintains protein thiols in a reduced state, drives the glutathione peroxidase/reductase cycle, and—together with oxidized glutathione ...

Starch is one of the most important carbohydrate storage forms in plants. Changes in its content and structure are tightly linked to photosynthate partitioning, source–sink regulation, grain filling, and quality formation. Compared with soluble sugars, which mainly reflect short-term ...

Plant cell-wall fiber components (including cellulose, hemicellulose, and lignin) constitute key structural foundations that determine tissue mechanical strength, digestibility, processing quality, and stress resistance. In plant physiology and quality research, “fiber” is not a single ...