Analysis of phenolic acids and carbohydrates in pigeon pea (Cajanus cajan) plant

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Abstract
Protocatechuic, p‐hydroxybenzoic, vanillic, caffeic, p‐coumaric and ferulic acids were identified and quantified in bark, stem and leaf of the pigeon pea plant (Cajanus cajan (L) Millsp). Glycerol, erythritol, threitol, arabinitol, xylitol, mannitol, galactitol, glucitol, myo‐inositol, glucose, fructose and sucrose were the alditols, cyclitols and free sugars present in varying amounts in the three parts of the plant. Uronic acid, ash, Klason lignin and polysaccharides in the plant fractions were determined on the extractive‐free dried materials. The stem and bark contained 40·1 and 39·2% of α‐cellulose, respectively.