scholarly journals Effects of media, heat adaptation, and outlet temperature on the survival of Lactobacillus salivarius NRRL B-30514 after spray drying and subsequent storage

LWT ◽  
2016 ◽  
Vol 74 ◽  
pp. 441-447 ◽  
Author(s):  
Yun Zhang ◽  
Jun Lin ◽  
Qixin Zhong
Keyword(s):  
Spray Drying ◽  
Outlet Temperature ◽  
Lactobacillus Salivarius ◽  
Heat Adaptation ◽  
Subsequent Storage ◽  
Effects Of Media

scholarly journals Viability of Bifidobacterium Pseudocatenulatum G4 after Spray-Drying and Freeze-Drying

2010 ◽  
Vol 3 ◽  
pp. MBI.S2728 ◽  
Author(s):  
Stephenie Wong ◽  
Barka Mohammed Kabeir ◽  
Shuhaimi Mustafa ◽  
Rosfarizan Mohamad ◽  
Anis Shobirin Meor Hussin ◽  
...  
Keyword(s):  
Spray Drying ◽  
Freeze Drying ◽  
Skim Milk ◽  
The Other ◽  
Outlet Temperature ◽  
Residual Moisture Content ◽  
Drying Process ◽  
Residual Moisture ◽  
Heat Adaptation ◽  
C 30

Viability of Bifidobacterium pseudocatenulatum G4 following spray-drying and freeze-drying in skim milk was evaluated. After spray-drying, the strain experienced over 99% loss in viability regardless of the air outlet temperature (75 and 85 °C) and the heat-adaptation temperature (45 and 65 °C, 30 min). The use of heat-adaptation treatment to improve the thermotolerance of this strain was ineffective. On the other hand, the strain showed a superior survival at 71.65%–82.07% after freeze-drying. Viable populations of 9.319–9.487 log10 cfu/g were obtained when different combinations of skim milk and sugar were used as cryoprotectant. However, the addition of sugars did not result in increased survival during the freeze-drying process. Hence, 10% (w/v) skim milk alone is recommended as a suitable protectant and drying medium for this strain. The residual moisture content obtained was 4.41% ± 0.44%.

The impact of spray drying outlet temperature on the particle morphology of mannitol

2011 ◽  
Vol 213 (1-3) ◽  
pp. 27-35 ◽  
Author(s):  
Stephan G. Maas ◽  
Gerhard Schaldach ◽  
Eva M. Littringer ◽  
Axel Mescher ◽  
Ulrich J. Griesser ◽  
...  
Keyword(s):  
Spray Drying ◽  
Particle Morphology ◽  
Outlet Temperature ◽  
The Impact

Effect of Several Factors on the Synthesis of Calcium Hydroxide Prepared by Spray Drying Method Using Limestone

2007 ◽  
Vol 544-545 ◽  
pp. 733-736
Author(s):  
Moon Kwan Choi ◽  
Jin Sang Cho ◽  
Sung Min Joo ◽  
Jin Koo Park ◽  
Ji Whan Ahn ◽  
...  
Keyword(s):  
Particle Size ◽  
Calcium Carbonate ◽  
Spray Drying ◽  
Feeding Rate ◽  
Spherical Shape ◽  
Initial Reaction ◽  
Outlet Temperature ◽  
Drying Method ◽  
Precipitated Calcium Carbonate ◽  
Carbonation Process

The purpose of this work is to influence of CaO concentrations of 5.0 wt.% and 10.0 wt.%, slurry feeding rate of 200~400 /min, rotating rate of drum of 5,000 and 10,000 rpm, inlet and outlet temperature on the synthesis of Ca(OH)2 powder, and the synthesis of precipitated calcium carbonate by carbonation process using Ca(OH)2 prepared by spray drying method. As the feeding rate of slurry was increased, the particle size of Ca(OH)2 was decreased. Regardless of rotating rate of drum, when the concentration of CaO was 5.0 wt.% and 10.0 wt.%, the morphology of Ca(OH)2 showed spherical shape of 10~30 μm and 20~60 μm, respectively. The specific surface area of synthesized Ca(OH)2 was 27~30 m2/g. When the initial reaction temperature was 11 °C and 30 °C, the shape and particle size of precipitated calcium carbonate synthesized in the carbonation process showed the rectangular shape of 0.1~0.4 μm and the spindle shape of 0.5~1.0 μm, respectively.

The Effect of Spray-Drying and the Subsequent Storage of the Dried Product on the Vitamin A, D, and Riboflavin Content of Eggs

1944 ◽  
Vol 28 (6) ◽  
pp. 421-426 ◽  
Author(s):  
Charles A. Denton ◽  
C. A. Cabell ◽  
Harry Bastron ◽  
Russell Davis
Keyword(s):  
Vitamin A ◽  
Spray Drying ◽  
Subsequent Storage

scholarly journals Improved Cell Viability and Anti-Candida Activity of Probiotic Lactobacillus salivarius MG242 by Heat Adaptation

2019 ◽  
Vol 37 (1) ◽  
pp. 49-56
Author(s):  
Chang-Ho Kang ◽  
YongGyeong Kim ◽  
YuJin Shin ◽  
Nam-Soo Paek ◽  
Jae-Seong So
Keyword(s):  
Cell Viability ◽  
Lactobacillus Salivarius ◽  
Heat Adaptation ◽  
Probiotic Lactobacillus

scholarly journals Modified taro starch as alternative encapsulant for microencapsulation of Lactobacillus plantarum SU-LS 36

2020 ◽  
Vol 38 (No. 5) ◽  
pp. 293-300
Author(s):  
R. Haryo Bimo Setiarto ◽  
Harsi Dewantari Kusumaningrum ◽  
Betty Sri Laksmi Jenie ◽  
Tatik Khusniati ◽  
Sulistiani Sulistiani
Keyword(s):  
Lactobacillus Plantarum ◽  
Spray Drying ◽  
Flow Rate ◽  
Room Temperature ◽  
Outlet Temperature ◽  
Air Flow Rate ◽  
Air Inlet ◽  
Moisture Treatment ◽  
Encapsulated Bacteria ◽  
Optimal Protection

Taro starch was modified and used as an alternative encapsulant for the microencapsulation of Lactobacillus plantarum SU-LS 36 by spray drying. Modification of taro starch was conducted by heat moisture treatment (HMT) and 2 autoclaving-cooling cycles (AC-2C). Microencapsulation of L. plantarum SU-LS 36 by spray dryer was done at constant air inlet (125 °C) and outlet temperature (50 °C), feed flow rate (4 mL min<sup>–1</sup>), drying air flow rate (20 m3 h<sup>–1</sup>) and air pressure (0.196 MPa). The modified taro starch AC-2C as an encapsulant material was able to produce round-shaped microcapsules and provided optimal protection during spray drying. The modified taro starch AC-2C is very promising to be used as an encapsulant for L. plantarum SU-LS36 since it showed better production yield (40.19%), high encapsulation efficiency (89.83%), protected the encapsulated bacteria from high temperature (70 °C), and showed the lowest viability decreasing during storage up to 6 weeks at room temperature.

scholarly journals Taking Advantage of Bacterial Adaptation in Order to Optimize Industrial Production of Dry Propionibacterium freudenreichii

2019 ◽  
Vol 7 (10) ◽  
pp. 477 ◽  
Author(s):  
Floriane Gaucher ◽  
Valérie Gagnaire ◽  
Houem Rabah ◽  
Marie-Bernadette Maillard ◽  
Sylvie Bonnassie ◽  
...  
Keyword(s):  
Spray Drying ◽  
Industrial Production ◽  
Compatible Solutes ◽  
Protective Mechanism ◽  
Scale Production ◽  
Propionibacterium Freudenreichii ◽  
Bacterial Adaptation ◽  
Heat Adaptation ◽  
Technological Stresses ◽  
And Storage

Propionibacterium freudenreichii is a beneficial bacterium, used both as a probiotic and as a cheese starter. Large-scale production of P. freudenreichii is required to meet growing consumers’ demand. Production, drying and storage must be optimized, in order to guarantee high P. freudenreichii viability within powders. Compared to freeze-drying, spray drying constitutes the most productive and efficient, yet the most stressful process, imposing severe oxidative and thermal constraints. The aim of our study was to provide the tools in order to optimize the industrial production of dry P. freudenreichii. Bacterial adaptation is a well-known protective mechanism and may be used to improve bacterial tolerance towards technological stresses. However, the choice of bacterial adaptation type must consider industrial constraints. In this study, we combined (i) modulation of the growth medium composition, (ii) heat-adaptation, and (iii) osmoadaptation, in order to increase P. freudenreichii tolerance towards technological stresses, including thermal and oxidative constraints, using an experimental design. We further investigated optimal growth and adaptation conditions, by monitoring intracellular compatible solutes accumulation. Glucose addition, coupled to heat-adaptation, triggered accumulation of trehalose and of glycine betaine, which further provided high tolerance towards spray drying and storage. This work opens new perspectives for high quality and fast production of live propionibacteria at the industrial scale.

Death Kinetics of Lactobacillus bulgaricus in a Spray Drying Process

1995 ◽  
Vol 58 (8) ◽  
pp. 934-936 ◽  
Author(s):  
P. C. TEIXEIRA ◽  
M. H. CASTRO ◽  
R. M. KIRBY
Keyword(s):  
Spray Drying ◽  
Skim Milk ◽  
Lactobacillus Bulgaricus ◽  
Outlet Temperature ◽  
Thermodynamic Quantities ◽  
Survival Ratio ◽  
First Order Kinetics ◽  
Air Temperatures ◽  
Entropy Of Activation ◽  
Death Kinetics

Survival of Lactobacillus bulgaricus during spray drying was studied at various outlet air temperatures. During spray drying the logarithmic survival ratio decreased with increased outlet air temperature with first-order kinetics; the pseudo-z value for Lactobacillus bulgaricus was 17.3°C. Plots of the death-rate constant for Lactobacillus bulgaricus versus reciprocal outlet temperature during spray drying in skim milk show a curve with two different activation energies (Ea). The calculated Ea values were 33.47 kJ/mol above 70°C and 85.77 kJ/mol below 70°C. Thermodynamic quantities for spray drying of Lactobacillus bulgaricus are also presented. Results show that the relationship between the entropy of activation and the enthalpy of activation for both spray drying and heating in liquid medium is linear, with all the data for drying falling in the range of a negative entropy.

Research on Biological Materials with Optimization of Spray Drying Walnut Antioxidant Polypeptide Using Response Surface Methodology

2014 ◽  
Vol 540 ◽  
pp. 326-330
Author(s):  
Yan Ma ◽  
Shuai Wu ◽  
Chu Yu Guan ◽  
Guo Hui Huang
Keyword(s):  
Response Surface Methodology ◽  
Response Surface ◽  
Spray Drying ◽  
Inlet Temperature ◽  
Outlet Temperature ◽  
Scavenging Activity ◽  
Feed Concentration ◽  
Air Inlet ◽  
Dpph Scavenging Activity ◽  
Dpph Scavenging

Response surface methodology (RSM) was employed to optimize the spray drying process for walnut polypeptide, which were hydrolyzed by papain and trypsin. Air inlet temperature, air outlet temperature and feed concentration as well as cross-interaction among these factors exhibited a significant effect on collection rate and DPPH scavenging activity of walnut polypeptide powder. Results showed that the optimal drying parameters were air inlet temperature of 172℃, air outlet temperature of 88℃ and feed concentration of 23 %. The observed collection rate and DPPH scavenging activity of polypeptide powder under the optimal conditions was up to 91.28 % and 76.33 %, respectively, which was consistent with the predicted result.

Survival of Listeria monocytogenes During the Manufacture and Storage of Nonfat Dry Milk

1985 ◽  
Vol 48 (9) ◽  
pp. 740-742 ◽  
Author(s):  
MICHAEL P. DOYLE ◽  
LOUISE M. MESKE ◽  
ELMER H. MARTH
Keyword(s):  
Listeria Monocytogenes ◽  
Spray Drying ◽  
Skim Milk ◽  
Inlet Temperature ◽  
Outlet Temperature ◽  
Drying Process ◽  
Dry Milk ◽  
Nonfat Dry Milk ◽  
And Storage ◽  
Moisture Resistant

The ability of Listeria monocytogenes to survive in skim milk during spray drying and to persist in nonfat dry milk during storage was examined. Concentrated (30% solids) and unconcentrated skim milks were inoculated with ca. 105 to 106 L. monocytogenes/ml and spray dried (inlet temperature, 165 ± 2°C; outlet temperature 67 ± 2°C) to a moisture content of 3.6 to 6.4%. The nonfat dry milk was packaged in moisture-resistant film and stored at 25°C for up to 16 wk. A reduction of ca. 1 to 1.5 log10 L. monocytogenes/g occurred during the spray drying process, irrespective of whether the milk was concentrated or not before spray drying. The organism progressively died during storage at 25°C, with a &gt;4-log10 CFU/g decrease occurring within 16 wk of storage.

Sign in / Sign up

Export Citation Format

Share Document