Determination of Silybin B in the Different Parts of Silybum marianum using HPLC-UV

Silymarin is the standardized extract from Silybum marianum which consists mainly of flavonoids and polyphenols. It is highly regarded for its hepatoprotective ability. Silybin B is a flavonolignan and one of the active components of silymarin. The content of silybin B in various parts of S. marianum was analyzed by HPLC-UV. Results show that the extract of seeds contain the highest amount of silybin B (7.434 mg/g DW). The petioles of S. marianum showed a low content of silybin B. This study revealed that seeds of S. marianum contain high amount of silybin B and could be a good source of the compound.

Fatty Acid Content in Perilla Cultivars and Commercial Oils Determined by GC Analysis

The content analysis of fatty acids in Perilla cultivars and commercial oils is conducted through gas chromatography with a flame ionization detector. Results show that Perilla cultivars, such as Deulsaem and Daesil, contain high amounts of α-linolenic acid (262.22 and 261.97 mg/g, respectively). Among commercial oils, Perilla oil contains a higher amount of α-linolenic acid (515.20 mg/g). Accordingly, α-linolenic acid is a major fatty acid of Perilla cultivars and oil. Therefore, Perilla cultivars could be used as a food supplement for nutritional and pharmaceutical purposes.