Study on thermal reaction behavior of saturate and aromatics in residue with dispersed-phase catalyst under hydrogen atmosphere;

Structural　characterization　of　three　fractions　(aromatics,　resins,　heptane　asphaltene)　isolated　from　Shengli　vacuum　residue　was　undertaken　using　ruthenium　ions　catalyzed　oxidation　(RICO)　which　converts　aromatic　carbons　selectively　to　carbon　dioxide　and/or　carboxylic　acids　while　leaving　aliphatic　and　naphthenic　structures　essentially　unaffected.

The top quality pear cv nanguo from Datun of Haicheng city was used as materials, and compared with the white pear from Suizhong, it was found that the aroma components in pear cv nanguo was a mixture of some substances such as 3-furancarboxylic acid, methyl ester etc.

Results indicated that the four treatments (high-N, middle-N, low-N, CK)contained 27,29,28,26 aroma components, and they respresented 94.

Aroma components of mature strawberry furits after thinning were extracted by solvent extraction, and then analyzed by GC/MS.

The copolymers of 1,2,4,5-tetramethylbenzene with other five aromatic molecules,namely 1,4-dihexyloxybenzene,anthracene,fluorene,N-ethylcarbazole and trans-stilbene were prepared by oxidative-coupling copolymerization.

Headspace solid-phase microextraction and gas chromatographymass spectrometry analysis of aroma compounds in mango;

The article introduced the technology of supercritical CO_2 extraction of fragrant ingredients from fresh flower of pomelo and analysis method by gas chromatography and mass spectrometry (GC-MS), putting emphasis on the effects of pressure, temperature and time on extraction ratio.

This paper introduced those fragrant ingredients from the fresh leaf of Boronia heterophy(lla)introduced and cultivated from New Zealand which were extracted by vapor distillation—ether extraction, and analyzed by gas chromatography—mass spectrometry(GC-MS).