Effects of ultraviolet light and curcumin-mediated photodynamic inactivation on microbiological food safety: A study in meat and fruit

Synergistic effect of hypocrellin B and curcumin on photodynamic inactivation of Staphylococcus aureus

“…PS was routinely used with other antimicrobials or approaches to enhance its photodynamic potency. For instance, antibiotics can be used as aPDI adjuvants, giving rise to synergistic action (Wozniak, et al ., 2019); UV coordinated with aPDI to release its antimicrobial activity (Correa, et al ., 2020). Amounting attempts were made to integrate the use of nanoparticles with aPDI, to improve PS delivery to microorganisms, increase the singlet oxygen yields, sometimes to act as PS themselves like TiO 2 and quantum dots (Kashef and Hamblin, 2017).…”

“…S3A). The data can be compared with the consequences of large dose of curcumin, with greatest reduction of (2.0 ± 0.4) log 10 achieved by 80 µM and 10 J cm ‒2 (Correa, et al ., 2020). Besides, although it is long considered to have antimicrobial activity per se , curcumin (Silva, et al ., 2017; Hernandez‐Patlan, et al ., 2018), restrained by the studied concentration, did not show remarkable inhibitory effect on bacterial survival in this study (Fig.…”

“…Food safety continues to be a major concern for public health, consumers and food industries throughout the world (Penha, et al ., 2017; Correa, et al ., 2020). And this serious challenge was known to arise from prevalence of microbial contamination mediated by foodborne pathogens.…”

“…The conventional heat‐ and chemical‐based bactericidal methods in the food industry are accompanied with some unresolved issues, such as incomplete microbial inactivation, pollution, secondary food contamination and antibiotic resistance (Silva, et al ., 2018, Yuan and Yuk, 2018) To address it, a new technique, namely antimicrobial photodynamic inactivation (aPDI), was recently introduced for food decontamination (Asok, et al ., 2012; Glueck, et al ., 2017; Correa, et al ., 2020). aPDI is defined as the application of a non‐toxic dye known as photosensitizer (PS), which can be photoactivated with light of the appropriate wavelength in the presence of oxygen, to generate cytotoxic reactive oxygen species (ROS) such as free radicals (type I reaction) and/or singlet oxygen (type II reaction) (Kashef and Hamblin, 2017; Yang, et al ., 2019).…”

Avaliação dos efeitos subletais da inativação fotodinâmica em larvas de >i<Aedes aegypti>/i< (Diptera: Culicidae) e fotodegradação da curcumina em D-manitol

“…em infecções de garganta,95 na descontaminação de alimentos96 e de utensílios hospitalares,97 entre outras aplicações.Alguns estudos mostram que extratos e óleos essenciais de Curcuma longa possuem atividade larvicida e repelente,56,98 bem como os curcuminóides isolados 99. No entanto, nosso grupo foi o pioneiro em demonstrar a ação da curcumina aplicando a técnica da IFD em larvas de Ae.…”