TECHNOLOGY FOCUS - INORGANIC CHEMISTRY - Preferred Components: The content of ester having molecule comprises phenol hydroxyl and/or amide with molecule at 10-20000 (preferably 30-5000) mg relative to 1 kg biodiesel base oil. The amide having molecule with phenol hydroxyl is amide compound of formulae (A) or (A1); and ester of having molecule with phenol hydroxyl is ester compound of formula (B) or (B1). The amide is beta -(4-hydroxy-3,5-ditertbutyl phenyl)n-butylamide propionate, beta -(4-hydroxy-3,5-ditertbutyl phenyl)n-pentylamide propionate, beta -(4-hydroxy-3,5-ditertbutyl phenyl)n-hexylamide propionate, beta -(4-hydroxy-3,5-ditertbutyl phenyl)n-heptylamide propionate, beta -(4-hydroxy-3,5-ditertbutyl phenyl)n-octylamide propionate, beta -(4-hydroxy-3,5-ditertbutyl phenyl)iso-octylamide propionate, beta -(4-hydroxy-3,5-ditertbutyl phenyl)n-nonanamide propionate, beta -(4-hydroxy-3,5-ditertbutyl phenyl)n-decylamide propionate, beta -(4-hydroxy-3,5-ditertbutyl phenyl)n-dodecanamide propionate, beta -(4-hydroxy-3,5-ditertbutyl phenyl)n-myristicamide propionate, beta -(4-hydroxy-3,5-ditertbutyl phenyl)n-hexadecylamide propionate, beta -(4-hydroxy-3,5-ditertbutyl phenyl)n-octadecannamide propionate, and/or beta -(4-hydroxy-3,5-ditertbutyl phenyl)oleamide propionate; and ester is beta -(4-hydroxy-3,5-ditertbutyl phenyl)methyl propionate, beta -(4-hydroxy-3,5-ditertbutyl phenyl)ethyl propionate, beta -(4-hydroxy-3,5-ditertbutyl phenyl)propyl propionate, beta -(4-hydroxy-3,5-ditertbutyl phenyl)isopropyl propionate, beta -(4-hydroxy-3,5-ditertbutyl phenyl)n-butyl propionate, beta -(4-hydroxy-3,5-ditertbutyl phenyl)isobutyl propionate, beta -(4-hydroxy-3,5-ditertbutyl phenyl)pentyl propionate, beta -(4-hydroxy-3,5-ditertbutyl phenyl)isopentyl propionate, beta -(4-hydroxy-3,5-ditertbutyl phenyl)n-hexyl propionate, beta -(4-hydroxy-3,5-ditertbutyl phenyl)isohexyl propionate, beta -(4-hydroxy-3,5-ditertbutyl phenyl)n-heptyl propionate, beta -(4-hydroxy-3,5-ditertbutyl phenyl)n-octyl propionate, beta -(4-hydroxy-3,5-ditertbutyl phenyl)isooctyl propionate, beta -(4-hydroxy-3,5-ditertbutyl phenyl)n-nonyl propionate, beta -(4-hydroxy-3,5-ditertbutyl phenyl)n-decyl propionate, beta -(4-hydroxy-3,5-ditertbutyl phenyl)n-dodecyl propionate, beta -(4-hydroxy-3,5-ditertbutyl phenyl)n-tetradecyl propionate, beta -(4-hydroxy-3,5-ditertbutyl phenyl)n-hexadecyl propionate, beta -(4-hydroxy-3,5-ditertbutyl phenyl)n-octadecyl propionate, glycol di( beta -(4-hydroxy-3,5-ditertbutyl phenyl)propionate), butanediol di( beta -(4-hydroxy-3,5-ditertbutyl phenyl)propionate), hexanediol di( beta -(4-hydroxy-3,5-ditertbutyl phenyl)propionate), triglycol di-3-(3-tertbutyl-4-hydroxy-5-methylphenyl)propionate, and/or tetra(3-(4'-hydroxy-3',5'-ditertbutyl phenyl)propionate)pentaerythritol ester. The biodiesel base oil is biodiesel or blended fuel having biodiesel. The biodiesel is fatty acid low-carbon alcohol ester generated through ester exchange reaction of low-carbon alcohol having 1-5C; and blended fuel having biodiesel is diesel engine fuel blended between biodiesel and blending components of petrol diesel, Fischer-Tropsch synthetic diesel, hydrocracking diesel and oxygen-containing diesel. Preferred Content: The weight ratio of ester to amide is 0.2-5:1.R1, R2, R5, R6=H and 1-24C hydrocarbyl;n=0-10;a=0-10;n1=1-4;R3, R4=H or 1-24C hydrocarbyl;R5, R6, R7=1-24C hydrocarbyl;a1=0-5;andm=1-5.