Probiotic yoghurt with inulin-type fructans of different degrees of polymerization: physicochemical and microbiological characteristics and storage stability / Iogurte probiótico com frutanos tipo inulina de diferentes graus de polimerização: características físico-químicas e microbiológicas e estabilidade ao armazenamento
Colombo Pimentel, Tatiana; Garcia, Sandra; Helena Prudencio, Sandra.
Semina ciênc. agrar
; 33(3): 1059-1070, 2012.
Artículo
en Portugués
|
LILACS-Express
| ID: biblio-1498858
The effect of the addition of inulin-type fructans of different degrees of polymerization (DP) on the physicochemical and microbiological characteristics and storage stability (4C for 28 days) of nonfat probiotic yoghurt was investigated. The yoghurts were prepared using traditional lactic culture (Streptococcus thermophilus and Lactobacillus delbrueckii ssp. bulgaricus) and Lactobacillus paracasei ssp. paracasei as probiotic. The formulations contained inulin- type fructans of DP low (P95 oligofructose, DP 5), medium (ST inulin, DP 10) or high (HP inulin, DP 23) in a concentration of 2g 100g of milk-1, meeting the current Brazilian legislation and, thus their claim of functional properties could be utilized; and were compared to a Normal formulation (without inulin-type fructans addition). The addition of inulin-type fructans with different DP did not alter the L*, a* and b* color parameters, the syneresis and the viability of the probiotic culture in yoghurts. Yoghurts with inulin-type fructans of low DP were more acidic (lower pH values and higher values of acidity). The high DP inulin caused a reduction in the firmness of yoghurt. The products contained Lactobacillus paracasei ssp. paracasei at concentrations higher than that recommended to consider them as probiotic foods throughout the storage period. The refrigerated storage resulted in decreased pH and viability of th
Biblioteca responsable:
BR68.1
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