The ethanolic extract of Syzygium cumini fruits was characterized and evaluated in the photogeneration of singlet oxygen (¹O₂) under visible light radiation. This process was studied from a theoretical approach by the survey of the generated electronic excited states, after photoexcitation of the most abundant anthocyanin of the extract, i.e. delphinidin-3,5-diglucoside. It was determinated that the adiabatic energy of the optimized T₁(π_H-1→π_L*) state was 1.55 eV and that the overall energy transfer releases ∼0.58 eV in an exothermic process. Therefore, this state is the responsible of promoting electron transfer reactions and subsequent formation of ¹O₂ through illumination.

对Syzygium cumini果实的乙醇提取物进行了表征，并在可见光辐射下单线态氧（¹ O ₂）的光生过程中对其进行了评估。在提取物中最丰富的花青素（即）的光激发后，通过理论方法对生成的电子激发态进行了研究，从而研究了这一过程。delphinidin-3,5-diglucoside。据determinated，优化T的绝热能量₁（π _H-1 →π_大号*）状态为1.55电子伏特，并使整体的能量转移释放~0.58 eV的在放热过程。因此，这种状态负责促进电子转移反应并随后形成¹ O ₂通过照明。