Effects of riboflavin photosensitization on the degradation of bisphenol A (BPA) in model and real-food systems.
Effects of riboflavin photosensitizations on the stability of bisphenol A (BPA), a well-known endocrine disrupting chemical, were studied in model and real-food systems by high-performance liquid chromatography (HPLC). Concentration of BPA was significantly decreased under light exposure (P < 0.05) as the concentration of riboflavin increased while those without riboflavin under light or those with riboflavin in the dark did not change significantly (P > 0.05). Addition of 50, 100, and 200 microM sodium azide significantly increased the stability of BPA in riboflavin photosensitization with concentration dependent manner (P < 0.05), implying that a singlet oxygen or type II pathway played a role in the photodegradation of BPA. Stability of BPA in riboflavin was significantly increased in the presence of high concentration of tert-butanol, a hydroxyl radical quencher, under light storage for 80 min, indicating hydroxyl radicals were involved and contributed to the degradation of BPA, at least in part. Availability of riboflavin photosensitization on the photodegradation of BPA was tested in 2 canned tea beverages with different phenolic contents. BPA was more stable in the beverage sample with higher total phenolic contents and free radical scavenging ability. The photodegradation of BPA in riboflavin photosensitization can be an efficient way to decrease the concentration of BPA from environmental or food systems.
Ha
Dong-Oh
DO
Dept. of Food Science and Technology, Seoul Natl. Univ. of Technology, Korea.
Jeong
Min Kyu
MK
Park
Chan Uk
CU
Park
Min Hee
MH
Chang
Pahn-Shick
PS
Lee
Jae Hwan
JH
D000704:Analysis of Variance; D001559:Benzhydryl Compounds; D002851:Chromatography, High Pressure Liquid; D004305:Dose-Response Relationship, Drug; D004853:Epoxy Resins; D018857:Food Packaging / Q000379:methods; D016166:Free Radical Scavengers / Q000378:metabolism; D008027:Light; D008962:Models, Theoretical; D010636:Phenols / Q000378:metabolism*; D010777:Photochemistry / Q000379:methods; D010782:Photolysis; D012256:Riboflavin / Q000378:metabolism*; D019810:Sodium Azide / Q000378:metabolism; D013662:Tea / Q000737:chemistry*; D020002:tert-Butyl Alcohol / Q000378:metabolism; D000098826:Bisphenol A Compounds
D001559:Benzhydryl Compounds; D004853:Epoxy Resins; D016166:Free Radical Scavengers; D010636:Phenols; D012256:Riboflavin; D019810:Sodium Azide; D013662:Tea; D020002:tert-Butyl Alcohol; C006780:bisphenol A; D000098826:Bisphenol A Compounds