and soluble nitrogen in 12% trichloroacetic acid (12% TCA-SN) expressed as percentage of TN [12% TCA-SN (% TN)], determined by the macro-Kjeldahl method according
and soluble nitrogen in 12% trichloroacetic acid (12%TCA-SN) expressed as percentage of TN [12% TCA-SN (% TN)],determined by the macro-Kjeldahl method according