questions: asking about drying of drumstick leaves. 
 answers: told him as-
moringa leaf powder
the leaves after harvest should be stripped off the stems, washed and dried in shade (sunlight can destroy vitamin a). the dried leaves are made into fine powder which can be stored in a air-tight containers. vitamin a retention is enhanced if the leaves are blanched before drying. (subadra et al., 1997). as a nutritional additive, 2 or 3 spoonful of the powder can be added to soups or sauces. moringa leaf powder can be stored for up to 6 months when protected from light and humidity.