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Solid extraction of 2PE using activated carbon: (a) the sizing; (b) Langmuir isotherm plot of 2PE adsorption on powdered activated carbon (PAC). (c) 2PE production by biosynthesis from L‐phenylalanine with powdered activated carbon (PAC) as an in situ extractant in M. pulcherrima culture 25 mL in SGJ media pH 4 at 20 °C after 7 days (n = 3). (d) 2PE concentrations at equilibrium in different solvents with 2PE 10 mg and PAC 10 mg in 10 mL of solvents in leachability study.
