Study of the influence of the application of ultra-high pressure homogenization (UAPH) and [Ca ++ ] on the stability of rice milk

Authors

  • Santiago Jorcín Departamento de Ciencia y Tecnología de los Alimentos, Facultad de Química, Universidad de la República. Uruguay
  • Buenaventura Guamis Centre Especial de Recerca, Planta de Tecnología de los Alimentos, Facultad de Veterinaria, Universidad Autónoma de Barcelona. España
  • Tomás López Departamento de Ciencia y Tecnología de los Alimentos, Facultad de Química, Universidad de la República, Uruguay. Centre Especial de Recerca, Planta de Tecnología de los Alimentos, Facultad de Veterinaria, Universidad Autónoma de Barcelona, España.

DOI:

https://doi.org/10.26461/07.02

Keywords:

Vegetable drink, UHPH, rice, stability

Abstract

Designed rice milk formulations were submitted to different thermal treatments and UHPH treatments. Particle size profiles were measured and related to physicochemical stability. The samples processed by UHPH showed higher stability than milk processed thermally only. From the study of the interaction between micronutrients (Ca++) and rice proteins it was found that increasing Ca++ concentration up to 80 ppm decreases the stability of the beverage to a minimum. For UHPH treated samples (inlet temperature 85 ºC, 300 MPa valve temperature 135 ºC) and UHT (142 ºC 6 s), total counts, spores, Bacillus Cereus and Enterobacteriaceaes remained all below the detection limit of 1 UFC/mL. UHPH and UHT samples were incubated at 30 °C for two weeks without microbial growth or alteration. UHPH proved to be a valid technology to stabilize and preserve rice milk by reducing particle size below 1 µm and reducing spoiling bacteria.

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Published

2012-10-24

Issue

Section

Articles

How to Cite

Study of the influence of the application of ultra-high pressure homogenization (UAPH) and [Ca ++ ] on the stability of rice milk. (2012). INNOTEC, 7 ene-dic, 16-20. https://doi.org/10.26461/07.02

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