Source: https://www.researchgate.net/publication/320408294_Formulation_of_handsanitizer_with_antibacterials_substance_from_n-hexane_extract_of_soursop_leaves_Annona_Muricata_Linn/fulltext/59e35324a6fdcc7154dba473/Formulation-of-handsanitizer-with-antibacterials-substance-from-n-hexane-extract-of-soursop-leaves-Annona-Muricata-Linn.pdf