CARSON CITY, NV, April 19, 2021 (GLOBE NEWSWIRE) -- via NewMediaWire -- Pharmagreen Biotech, Inc., (OTC PINKS: PHBI), announces that the signed letter of intent with Advanced Bio-oil Technologies Ltd. (ABOT), based in Denver, Colorado, as announced on February 16, 2021 has been extended by mutual agreement between the parties to June 30, 2021. Pharmagreen to date has identified a number of opportunities for acquisition and further development of the assets for tissue culture