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Contribution à l’étude de la qualité et la stabilité d’un lait fermenté alicament (type yaourt étuvé) additionné d’extrait a l’hexane de Thymus vulgaris(Thym)récolté dans la région de SETIF

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dc.contributor.author MAKHLOUF, Souad
dc.date.accessioned 2018-11-26T07:30:19Z
dc.date.available 2018-11-26T07:30:19Z
dc.date.issued 2018
dc.identifier.uri http://e-biblio.univ-mosta.dz/handle/123456789/2372
dc.description.abstract The purpose of this study is to monitor the effect of the extracts of thyme. (thymus vulgaris) on the quality of a fermented milk (type yogurt) over the post phase acidification of sample preservation in positive cold to 4° C. for 21 days. From beginning to end of the period of post acidification, the average values of pH (6.46 à 4,49) and viscosity in fermented milks are characterized by a remarkable reduction. The fermented milk acidity knows the contrary a significant increase during the experiment (17,80D° en 1day) and (84,66 en 21day), it is also observed a proportional relationship average acidity values with embedded phenolic extract rate. It seems that the addition of thyme extract product stimulates the growth of specific organisms inoculated with the number of living bacteria (Streptococcus thermophélus and Lactobacillus bulgaricus) enumerated widely spreads the accepted norm in the product of (107UFC / ml). In the end the best results organoleptic (acidity, cohesiveness and adhesiveness) are found in fermented milk with added ginger phenolic extracts prepared at a dilution of 4 and 6%. en_US
dc.language.iso fr en_US
dc.subject Yaourt en_US
dc.subject Extrait de thym au l’hexane en_US
dc.subject Streptococcus thermophélus en_US
dc.subject Lactobacillus bulgaricus. en_US
dc.subject Yogurt en_US
dc.subject phenolic extract of ginger en_US
dc.subject Streptococcus thermophélus Lactobacillus bulgaricus. en_US
dc.title Contribution à l’étude de la qualité et la stabilité d’un lait fermenté alicament (type yaourt étuvé) additionné d’extrait a l’hexane de Thymus vulgaris(Thym)récolté dans la région de SETIF en_US
dc.type Other en_US


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