Human beings are known to suffer from major allergens such as pollen grains, fungal spores, house dust mites, animal dander and food stuff present in the atmosphere. In India about 20% of population suffers from major allergic diseases such as bronchial asthma, allergic rhinitis, eczema, hay fever etc. Pollinosis is caused by the pollen of grasses and other flowering plants. Plants produce huge amount of pollen grains that are dispersed in the air and act as source of aeroallergens inspite of low concentration.