当前位置： SCI文献检索 > JOURNAL OF APPLIED MICROBIOLOGY期刊下所有文献 > Modelling the lag time and growth rate of Aspergillus section Nigri IOC 4573 in mango nectar as a function of temperature and pH.

Modelling the lag time and growth rate of Aspergillus section Nigri IOC 4573 in mango nectar as a function of temperature and pH.

Abstract：

AIMS:To assess the behaviour of Aspergillus section Nigri IOC 4573 in mango nectar as affected by temperature and pH. METHODS AND RESULTS:A central composite design (2(2)+2*2+3) was used to estimate the influence of temperature (17·2-22·8°C) and pH (3·28-4·7) on A. section Nigri growth (λ, lag time; μ, growth rate). Secondary models (polynomial and Arrhenius-Davey) describing the effects of temperature and pH on λ and μ were constructed. A decrease in temperature from 22·8°C to 17·2°C resulted in an a 16-fold increase in λ. The increase in temperature from 20°C to 22·8°C at pH=4·0 led to a fourfold increase in μ. The polynomial model was the best in fitting the data and the pH (linear), temperature (linear and quadratic terms) significantly influenced λ. For μ, there was a significant influence by the pH (linear), temperature and pH (quadratic terms). CONCLUSIONS:The storage of mango nectar at <15°C and reduced pH could completely inhibit the growth of A. section Nigri. SIGNIFICANCE AND IMPACT OF THE STUDY:This is the first study to show how storage temperature and seasonal variability (pH) between harvests may affect mould growth in mango nectar.

journal_name

J Appl Microbiol

journal_title

Journal of applied microbiology

authors

Silva AR,Sant'Ana AS,Massaguer PR

doi

10.1111/j.1365-2672.2010.04803.x

subject

Has Abstract

pub_date

2010-09-01 00:00:00

pages

1105-16

issue

3

eissn

1364-5072

issn

1365-2672

pii

JAM4803

journal_volume

109

pub_type

杂志文章

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