Growth and survival of lactic acid bacteria in lucerne silage

2012 ◽  
Vol 57 (4) ◽  
pp. 359-362 ◽  
Author(s):  
Eva Vlková ◽  
Vojtěch Rada ◽  
Věra Bunešová ◽  
Šárka Ročková
Keyword(s):  
Lactic Acid ◽  
Lactic Acid Bacteria ◽  
Growth And Survival

scholarly journals Effects of Feed Mixed with Lactic Acid Bacteria and Carbon, Nitrogen, Phosphorus Supplied to the Water on the Growth and Survival Rate of White Leg Shrimp (Penaeus vannamei) Infected with Acute Hepatopancreatic Necrosis Disease Caused by Vibrio parahaemolyticus

Biology ◽  
2021 ◽  
Vol 10 (4) ◽  
pp. 280
Author(s):  
Linh Nguyen Thi Truc ◽  
Tuu Nguyen Thanh ◽  
To Tran Thi Hong ◽  
Day Pham Van ◽  
Minh Vo Thi Tuyet ◽  
...  
Keyword(s):  
Lactic Acid ◽  
Survival Rate ◽  
Lactic Acid Bacteria ◽  
Vibrio Parahaemolyticus ◽  
Control Group ◽  
Penaeus Vannamei ◽  
Growth And Survival ◽  
Acute Hepatopancreatic Necrosis Disease ◽  
Nitrogen Phosphorus ◽  
Shrimp Health

This study aimed to evaluate the growth, survival rate, and resistance to acute hepatopancreatic necrosis disease (AHPND) of white leg shrimp (Penaeus vannamei) by using Lactobacillus plantarum, Lactobacillus fermentum, and Pediococcus pentosaceus mixed with feed, and at the same time supplying CNP in a ratio of 15:1:0.1 to the water. As a result, the treatments that shrimp were fed with feed containing lactic acid bacteria (LAB), especially L. plantarum, have increased shrimp growth, total hemocyte cells, granulocyte cells, and hyaline cells significantly (p < 0.05) in comparison to the control group. The supply of CNP to the water has promoted the intensity of V. parahaemolyticus effects on shrimp health and significantly decreased total hemocyte cells, granulocyte cells, and hyaline cells by 30–50% in the period after three days of the challenge, except in L. plantarum treatment, which had only a 20% decrease compared to other treatments. In CNP supplying treatments, the AHPND infected rate and mortality of shrimp were higher than those in other treatments. In summary, the supply of CNP had significantly reduced the shrimp’s immune response and promoted the susceptibility of shrimp to AHPND in both cases of use with and without LAB-containing diets.

scholarly journals Modelling of the Behaviour of Salmonella enterica serovar Reading on Commercial Fresh-Cut Iceberg Lettuce Stored at Different Temperatures

Foods ◽  
2020 ◽  
Vol 9 (7) ◽  
pp. 946
Author(s):  
Fatih Tarlak ◽  
Gro Johannessen ◽  
Isabel Bascón Villegas ◽  
Araceli Bolívar ◽  
Guiomar Denisse Posada-Izquierdo ◽  
...  
Keyword(s):  
Lactic Acid ◽  
Lactic Acid Bacteria ◽  
Modified Atmosphere Packaging ◽  
Weibull Model ◽  
Effective Measure ◽  
Growth And Survival ◽  
Microbial Risk ◽  
Iceberg Lettuce ◽  
Different Temperatures ◽  
Fresh Cut

The aim of this study was to model the growth and survival behaviour of Salmonella Reading and endogenous lactic acid bacteria on fresh pre-cut iceberg lettuce stored under modified atmosphere packaging for 10 days at different temperatures (4, 8 and 15 °C). The Baranyi and Weibull models were satisfactorily fitted to describe microbial growth and survival behaviour, respectively. Results indicated that lactic acid bacteria (LAB) could grow at all storage temperatures, while S. Reading grew only at 15 °C. Specific growth rate values (μmax) for LAB ranged between 0.080 and 0.168 h−1 corresponding to the temperatures 4 and 15 °C while for S. Reading at 15 °C, μmax = 0.056 h−1. This result was compared with published predictive microbiology models for other Salmonella serovars in leafy greens, revealing that predictions from specific models could be valid for such a temperature, provided they were developed specifically in lettuce regardless of the type of serovars inoculated. The parameter delta obtained from the Weibull model for the pathogen was found to be 16.03 and 18.81 for 4 and 8 °C, respectively, indicating that the pathogen underwent larger reduction levels at lower temperatures (2.8 log10 decrease at 4 °C). These data suggest that this Salmonella serovar is especially sensitive to low temperatures, under the assayed conditions, while showcasing that a correct refrigeration could be an effective measure to control microbial risk in commercial packaged lettuce. Finally, the microbiological data and models from this study will be useful to consider more specifically the behaviour of S. Reading during transport and storage of fresh-cut lettuce, elucidating the contribution of this serovar to the risk by Salmonella in leafy green products.

scholarly journals THE EFFECT OF NEW LACTIC ACID BACTERIA ON GROWTH AND SURVIVAL OF HYDROBIONTS

2020 ◽  
pp. 115-119
Author(s):  
N. A. Kolomin ◽  
◽  
О. B. Soprunova ◽  
Keyword(s):  
Lactic Acid ◽  
Lactic Acid Bacteria ◽  
Feed Composition ◽  
Growth And Survival ◽  
Aquarium Fish ◽  
Biological Safety ◽  
Biological Indices ◽  
Growth Intensity ◽  
High Concentrations ◽  
Positive Effect

The article is devoted to the study and isolation of new isolates of lactic acid bacteria. During the study, 9 isolates of lactic acid bacteria were isolated and their physiological, biochemical, and production-valuable properties were studied.The isolates have sufficient acid-forming activity (56.5-110 To), expressed saccharolytic activity (breakdown glucose, lactose, sucrose, maltose and galactose), the ability to develop at high concentrations of NaCl. Four of the most active isolates were used to study the effectiveness of lactic acid bacteria in the feed composition. As a result of inclusion of studied isolates in aquarium fodders, positive effect of two isolates on fish-growing and biological indices of fish has been established. The obtained data indicate at the same time the biological safety of the studied cultures, as well as the increase in the growth intensity of aquarium fish.

Sign in / Sign up

Export Citation Format

Share Document