Abstract:

The microbial longan fresh-keeping agent “GLX” was made from Brevibacillus brevis FJAT-0809-GLX, which not only had very good fresh-keeping effect toward longan and other fruits, but also had particular aroma. This experiment was designed to find out volatile components extracted from GLX. The volatile components of GLX were analyzed by SPME/GC-MS. Thirteen compounds were identified with the match degree above 90%. There were eight types of alkene in the volatile, with relative amount of 14.11%, including Hexadecane; Cyclopentasiloxane, decamethyl-; Tetradecane; Heptadecane; Octadecane; Pentadecane, 2,6,10,14- tetramethyl-; Pentadecane, 4-methyl-; Pentadecane, 4-methyl-. There were two types of alkene, with relative amount of 1.65%, including Longifolene, (+)-、Cedrene,(-)-alpha-.There was one type of esters, with relative amount of 0.70%, including sulfurous acid, 2-propyl tetradecyl ester. (+)-Longifolene, and (-)-alpha-Cedrene, two kinds of natural spice, were the aromatic compounds extracted form microbial longan fresh-keeping agent. Phenol, 2,4-bis(1,1-dimethylethyl) was the important intermediate product light stabilizer of light stabilizer and antioxidants.