The products formed in the pyrolysis of beta-carotene under nitrogen condition at different high temperatures such as 300,400,500,600,700 and 800 degree C were investigated respectively.The results indicated that the pyrolysis of beta-carotene at high temperature was a very complex process and the p...
The products formed in the pyrolysis of beta-carotene under nitrogen condition at different high temperatures such as 300,400,500,600,700 and 800 degree C were investigated respectively.The results indicated that the pyrolysis of beta-carotene at high temperature was a very complex process and the pyrolytic products were mixtures of many compounds.Additionally,the pyrolytic products were different when beta-carotene was pyrolysed at different temperature.The content of aromatic compounds obtained was higher when the pyrolytic temperature was relatively lower. The content of all those flavors decreased with increase of pyrolytic temperature,and beta-ionone and dihydroactinidiolide disappeared completely when the pyrolytic temperature reached 600 degree C. On the contrary, the content of polynuclear aromatic hydrocarbons (PAHs) such as naphthalene, anthrene and phenanthrene increased quickly in this case. Above 800 degree C,the pyrolytic products were mainly composed of benzene, toluene,p-xylene, m-xylene and PAHs such as naphthalene, anthrene,phenanthrene,indene and derivatives of those compounds.In addition,the pyrolytic mechanism of beta-carotene was deduced.
The products formed in the pyrolysis of beta-carotene under nitrogen condition at different high temperatures such as 300,400,500,600,700 and 800 degree C were investigated respectively.The results indicated that the pyrolysis of beta-carotene at high temperature was a very complex process and the pyrolytic products were mixtures of many compounds.Additionally,the pyrolytic products were different when beta-carotene was pyrolysed at different temperature.The content of aromatic compounds obtained was higher when the pyrolytic temperature was relatively lower. The content of all those flavors decreased with increase of pyrolytic temperature,and beta-ionone and dihydroactinidiolide disappeared completely when the pyrolytic temperature reached 600 degree C. On the contrary, the content of polynuclear aromatic hydrocarbons (PAHs) such as naphthalene, anthrene and phenanthrene increased quickly in this case. Above 800 degree C,the pyrolytic products were mainly composed of benzene, toluene,p-xylene, m-xylene and PAHs such as naphthalene, anthrene,phenanthrene,indene and derivatives of those compounds.In addition,the pyrolytic mechanism of beta-carotene was deduced.
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