Publications by authors named "Juan Antonio Tudela"
Article Synopsis
- This study investigates the effectiveness of different disinfectants, including free chlorine, chlorine dioxide, and peracetic acid, in reducing viruses in produce wash water to enhance food safety against human norovirus outbreaks.
- Results revealed that free chlorine was highly effective, inactivating over 8 logs of human norovirus in just 1 minute, while chlorine dioxide and peracetic acid had variable success.
- The research also introduces a predictive model for virus inactivation that can help optimize post-harvest safety protocols in the fresh produce industry.
L-galactono-gamma-lactone dehydrogenase (GLDH) activity and vitamin C content as ascorbic acid (AA) plus dehydroascorbic acid (DHA) were evaluated in five potato tuber cultivars (Agata, Altesse, Franceline, Manon, and Monalisa). The effect of fresh-cutting and subsequent refrigerated storage of Manon potato under different atmospheres (air, 20% CO(2) + air, 100% N(2), and vacuum packaging) on GLDH activity and vitamin C content was also determined. GLDH from the five potato tuber cultivars showed typical inhibition kinetics by high substrate concentration in the synthesis of AA from its physiological precursor L-galactonic acid-gamma-lactone (GL).
View Article and Find Full Text PDFThe effect of minimal processing on polyphenol oxidase (PPO), peroxidase (POD), phenylalanine ammonia-lyase (PAL), and phenolic compounds was studied in five potato cultivars (Agria, Cara, Liseta, Monalisa, and Spunta). Minimal processing caused an overall increase in PPO, POD, and PAL activities. The isoform pattern of PPO was the same for all of the cultivars before and after processing.
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