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Degradation kinetics of anthocyanins from sour cherry, pomegranate, and strawberry juices by hydrogen peroxide

机译:过氧化氢降解酸樱桃,石榴和草莓汁中花色苷的动力学

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摘要

Degradations were studied at different hydrogen peroxide (H2O2] concentrations (9.31 to 27.92 mmol. L-1] over a range of 10 ° to 30 °C. Degradation of anthocyanins by H2O2 was described by first-order function. Comparison of t1/2 values revealed that sour cherry anthocyanins were the most resistant to H2O2, followed by pomegranate and strawberry anthocyanins. Thus, the removal of residual H2O2 from the juice contact surfaces of aseptically packaged strawberry juices should be controlled more carefully to prevent anthocyanin degradation. Respective Ea values were between 9.4 to 11.1, 9.5 to 11.4, and 11.4 to 12.2 kcal.mol-1; and Q10 values between 1.59 to 2.22, 1.62 to 2.05, and 1.76 to 2.36 for strawberry, sour cherry, and pomegranate anthocyanins.
机译:研究了在10°至30°C范围内,在不同的过氧化氢(H2O2]浓度(9.31至27.92 mmol。L-1)下的降解。一阶函数描述了H2O2对花色苷的降解。值表明,酸性樱桃花色苷对H2O2的抵抗力最强,其次是石榴和草莓花色苷,因此,应更加谨慎地控制从无菌包装的草莓汁的汁液接触表面去除残留的H2O2,以防止花色苷降解。草莓,酸樱桃和石榴花色苷的Q10值在9.4至11.1、9.5至11.4和11.4至12.2 kcal.mol-1之间; Q10值在1.59至2.22、1.62至2.05和1.76至2.36之间。

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