Acta Chimica Sinica ›› 1994, Vol. 52 ›› Issue (3): 301-305. Previous Articles     Next Articles

Original Articles

单重态氧化学VII. 迷迭香中主要抗氧化成分对单重态氧的猝灭作用

王夺元;常静   

  1. 中国科学院感光化学研究所
  • 发布日期:1994-03-15

Singlet oxygen chemistry. VII. the quenching of singlet oxygen by the main antioxidative components of rosemary

WANG DUOYUAN;CHANG JING   

  • Published:1994-03-15

The quenching of singlet oxygen by rosmanol and carnosol is investigated by steady kinetic methods. The total rate constants kA for quenching of singlet oxygen are 2.51 ?107 and 7.19 ?106 mol1-dm-3-s-1 in methanol resp. in which the chem. quenching rate constants kr are 1.27 ?107 and 9.82 ?105 mol-dm-3-s-1 and corresponding half quenching concentration b values are 4.6 ?10-3 and 1.6 ?10-2 mol-dm-3 resp. Two components extracted from natural rosemary appear excellent potential application as high performance antioxidative agents in food industries.

Key words: SINGLET OXYGEN, QUENCHING, QUENCHING, CARNOSOL

CLC Number: