• Non ci sono risultati.

Lacto-dynamographic study of lactic acid bacteria as a tool for their selection

N/A
N/A
Protected

Academic year: 2021

Condividi "Lacto-dynamographic study of lactic acid bacteria as a tool for their selection"

Copied!
1
0
0

Testo completo

(1)

Lacto-dynamographic Study of Lactic Acid Bacteria as a Tool for Their Selection P. Micari, A. Caridi*

“Mediterranea” University of Reggio Calabria, Department of Agro-Forestry and Environmental Technology and Science, Italy

acaridi@unirc.it

The lacto-dynamograph provides, through a diapason tracing, a graphic image of the milk coagulation mechanisms by means of three parameters, that are correlated to several curd characteristics: rennet coagulation time (r in min), curd firming rate (k20 in min) and curd

firmness (a30 in mm) measured 30 min after the addition of rennet. This allows a simple and

quick identification of animals that produce over-reactive or under-reactive milk, regarding rennet.

Lactic acid bacteria are involved in the production of a variety of fermented foods. The selection of starter cultures for cheesemaking is performed on the basis of numerous characteristics, also in some way referred to their role in cheese rheology.

The aim of this research has been to develop a method to directly screen lactic acid bacteria regarding their coagulation properties using the lacto-dynamographic technique. Therefore, several autochthonous strains of lactic acid bacteria, previously isolated from Italian raw milk cheeses, have been inoculated in pasteurised goats’ and ewes’ milk and studied using a lacto-dynamograph to determine their behaviour.

The lacto-dynamographic analysis of lactic acid bacteria-inoculated milks shows different types of tracing and, on the whole, an interesting biodiversity among the tested strains. This simple and quick screening method could give the opportunity to easily perform a pre-selection of a high number of strains, discriminating lactic acid bacteria regarding their coagulation properties.

Keywords: lacto-dynamographic analysis, coagulation parameters, lactic acid bacteria, pre-selection

Riferimenti

Documenti correlati

The third part of the paper is focused on the implementation of National and Regional RIS3 Plans, introducing the MAPS-LED Research Project (Horizon 2020–MSCA

Soltanto due dei servizi prefigurati sono stati usati dalla maggioranza degli utenti (si ricorda che in questa sede per “utenti” si intendono solo coloro che avevano già visitato

2020).. 174 conoscenza e esperienze volte ad unire sviluppo socio-economico e conservazione della biodiversità per il benessere umano. Questa ricerca, attraverso uno

As shown in Figures 2 A and 2B, few PCNA and NeuN double-positive cells can be detected at this stage in mouse cerebellum (33 ± 8 cells in three sections for each brain, mean ± SD, n

Siamo forse partecipi, quindi, di una nuova fase di transizio- ne, che dovremmo saper riconoscere proprio in ragione della frequentazione storica delle forme brevi,

Successful treatment of extensively drug-resistant Acinetobacter baumannii ventriculitis and meningitis with intraven- tricular colistin after application of a loading dose: a

One of the problems related to defining answer relevancy in Grice theory is that while it can explain how the sentence B in the following conversation can be understood as the

C - Fundamental Science of Graphene and 2D Materials F - Graphene and Living Matter D - Graphene and 2D Materials Nano-Composites E - Energy Applications.. Session C: