Czech J. Food Sci., 2021, 39(2):106-112 | DOI: 10.17221/21/2020-CJFS

Effect of ultraviolet-C light and mild thermal treatment on the storage life of orange juiceOriginal Paper

Paola Hernández-Carranza1, Arely Peralta-Pérez1, Raúl Avila-Sosa1, Irving Israel Ruiz-López2, Alfredo César Benitez-Rojas3, Carlos Enrique Ochoa-Velasco ORCID...1,*
1 Departamento de Bioquímica-Alimentos, Facultad de Ciencias Químicas, Benemerita Universidad Autonoma de Puebla (BUAP), Puebla, Mexico
2 Facultad de Ingeniería de Alimentos, Facultad de Ingeniería Química, Benemerita Universidad Autonoma de Puebla (BUAP), Puebla, Mexico
3 Departamento de Ciencias Biológicas, Universidad Popular Autónoma del Estado de Puebla (UPAEP), Puebla, Mexico

This study aimed to evaluate the effect of low-dosage treatment with ultraviolet-C light (19.75 J L-1 for 5 min), mild thermal treatment (40 °C for 5 min), or their combination on the native microflora (mesophiles and moulds plus yeast) and consumer acceptance of orange juice at the beginning and after storage (5 or 22 °C). Results indicated that UV-C light and mild thermal treatments reduce 0.19 ± 0.03 and 0.25 ± 0.02 log cycles (both kinds of microorganisms), respectively. The combination of treatments displays an additive effect against mesophiles (0.47 ± 0.01 log) and moulds plus yeasts (0.42 ± 0.02 log). After 9 days of storage at 5 °C, combined treatment did not present any microbial increases (P > 0.05), while consumer acceptance was similar (P > 0.05) to the fresh orange juice. Although several studies about the use of hurdle technology using UV-C light in orange juice have to be conducted, the results obtained in this study are promising, and they can be used for further studies.

Keywords: hurdle technology; native microflora; storage life; liquid food; UV-C light; minimal processing

Published: April 29, 2021  Show citation

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Hernández-Carranza P, Peralta-Pérez A, Avila-Sosa R, Ruiz-López II, Benitez-Rojas AC, Ochoa-Velasco CE. Effect of ultraviolet-C light and mild thermal treatment on the storage life of orange juice. Czech J. Food Sci. 2021;39(2):106-112. doi: 10.17221/21/2020-CJFS.
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