Northampton Electronic Collection of Theses and Research

The effect of preservatives on Alicyclobacillus acidoterrestris and Propionicacterium cyclohexanicum in fruit juices

Walker, M. and Phillips, C. A. (2008) The effect of preservatives on Alicyclobacillus acidoterrestris and Propionicacterium cyclohexanicum in fruit juices. Food Control. 19(10), pp. 974-981. 0956-7135. [Online article] (Unpublished)

Item Type: Article
Abstract: Processors within the soft drinks industry utilise various methods to preserve the quality of juice products, which may include the use of chemical preservatives. Alicyclobacillus acidoterrestris, especially its spores, is acknowledged as a threat to the industry in that it is increasingly being reported as a cause of spoilage incidents. Propionibacterium cyclohexanicum has also been shown to cause spoilage, with one incident in orange juice reported to date. This study investigated the effect of the preservatives sodium benzoate and potassium sorbate and also the bacteriocin nisin on these two spoilage bacteria. In apple juice at 30 °C 0.1 mg/ml sodium benzoate or potassium sorbate inhibit growth of 101 cells/ml A. acidoterrestris while 0.5 mg/ml inhibits growth of 104 cells/ml. Nisin at 5–10 IU/ml alone, and in combination with either sodium benzoate or potassium sorbate, is also effective in inhibiting multiplication of A. acidoterrestris. Sodium benzoate (0.5 mg/ml and 1.0 mg/ml) and potassium sorbate (1.0 mg/ml), both alone and in combination with 2.5, 5 or 10 IU/ml nisin, inhibit growth of P. cyclohexanicum in orange juice at 30 °C with no viable cells detected at 29 days, although nisin alone at concentrations up to 1000 IU/ml were not effective in inhibiting multiplication of P. cyclohexanicum, suggesting that this organism may be resistant to nisin
Additional Information: Article available online from October 2007
Uncontrolled Keywords: Alicyclobacillus acidoterrestris, Propionibacterium cyclohexanicum, preservatives, nisin, fruit juices
Subjects: Q Science > QR Microbiology > QR75 Bacteria
T Technology > TP Chemical technology > TP368 Food processing and manufacture
Creators: Walker, Michelle and Phillips, Carol A
Publisher: Elsevier
Faculties, Divisions and Institutes: University Faculties, Divisions and Research Centres - OLD > Faculty of Health & Society
Date: October 2008
Date Type: Publication
Page Range: pp. 974-981
Journal or Publication Title: Food Control
Volume: 19
Number: 10
Language: English
ISSN: 0956-7135
Status: Unpublished
Refereed: Yes

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