Temporal variation in protein content and yield of Vigna mungo (L.) Hepper leaves.

Temporal variation in total protein and soluble protein contents and protein yield of Vigna mungo leaves at intervals of every three hours during day and night was studied. The study was done with the view to ascertain the hour of harvesting the leaves for maximum yield of leaf protein concentrate. Observations reveal that the total protein and soluble protein contents in the leaves are minimum during 3.00 to 6.00 hrs, which steadily rise with time to reach the maximum values during 12.00 to 15.00 hrs, after which the same shows a steady decrease with time.