کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
7585818 | 1492042 | 2018 | 29 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Effect of thermal treatment and light irradiation on the stability of lycopene with high Z-isomers content
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
شیمی
شیمی آنالیزی یا شیمی تجزیه
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
The stability of lycopene with high Z-isomers content during thermal treatment and light irradiation was investigated. Purified (all-E)-lycopene was thermally isomerized to the Z-isomers in dichloromethane (CH2Cl2) at 50â¯Â°C for 24â¯h. The total content of the Z-isomers of lycopene reached 56.1%. Then, the mixture of lycopene isomers was stored in the dark at 4, 25, and 40â¯Â°C for 30â¯days, and under light irradiation using a fluorescent light at 4â¯Â°C for 336â¯h. The degradation rate of lycopene during thermal treatment rose with increasing temperature and the activation energy for decomposition of the mixture of lycopene isomers was calculated to be 71.0â¯kJâ¯molâ1. The degradation rate of lycopene isomers was almost the same under thermal treatment. On the other hand, during light irradiation, isomerization was promoted rather than decomposition, i.e. (9Z)- and (13Z)-lycopene converted to the (all-E)-isomer.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Food Chemistry - Volume 250, 1 June 2018, Pages 253-258
Journal: Food Chemistry - Volume 250, 1 June 2018, Pages 253-258
نویسندگان
Kazuya Murakami, Masaki Honda, Ryota Takemura, Tetsuya Fukaya, Wahyudiono Wahyudiono, Hideki Kanda, Motonobu Goto,