Institute of Pharmacy, Division of Pharmacognosy, Guru Ghasidas Central University, Bilaspur, Chhattisgarh, 495009, India. pharmafriend@rediffmail.com. Institute of Pharmacy, Division of Pharmacognosy, Guru Ghasidas Central University, Bilaspur, Chhattisgarh, 495009, India. Department of Rural Technology, Guru Ghasidas Central University, Bilaspur, Chhattisgarh, 495009, India.