A study of cotton lignin

Summary 1. In a study of the cotton plant with respect to its vegetation period, it has been established that as it develops the amount of extractive substances in it decreases and the amount of lignin, cellulose, and pentosans increases.2. The ratio of the main components of the combined aldehydes obtained in the oxidation of the cotton plant material with nitrobenzene in an alkaline medium (vanillin and syringaldehyde) does not remain constant. At the beginning of the vegetation period the vanillin predominates, and then the amounts of the two aldehydes become equal.Translated from Khimiya Prirodnykh Soedinenii, No. 1, pp. 103–105, January–February, 1972.