scholarly journals Effects of spray-drying and storage on astaxanthin content of Haematococcus pluvialis biomass

2011 ◽  
Vol 28 (3) ◽  
pp. 1253-1257 ◽  
Author(s):  
Maria Filomena J. Raposo ◽  
Alcina M. M. B. Morais ◽  
Rui M. S. C. Morais
Keyword(s):  
Spray Drying ◽  
Haematococcus Pluvialis ◽  
Astaxanthin Content ◽  
And Storage

scholarly journals Biomass and Astaxanthin Productivities of Haematococcus pluvialis in an Angled Twin-Layer Porous Substrate Photobioreactor: Effect of Inoculum Density and Storage Time

Biology ◽  
2019 ◽  
Vol 8 (3) ◽  
pp. 68 ◽  
Author(s):  
Thanh-Tri Do ◽  
Binh-Nguyen Ong ◽  
Minh-Ly Nguyen Tran ◽  
Doan Nguyen ◽  
Michael Melkonian ◽  
...  
Keyword(s):  
Haematococcus Pluvialis ◽  
Dry Weight ◽  
Porous Substrate ◽  
Light Intensities ◽  
Alternative Approach ◽  
Dry Biomass ◽  
Astaxanthin Production ◽  
Astaxanthin Content ◽  
Storage Times ◽  
And Storage

The microalga Haematococcus pluvialis is mainly cultivated in suspended systems for astaxanthin production. Immobilized cultivation on a Twin-Layer porous substrate photobioreactor (TL-PSBR) has recently shown promise as an alternative approach. In Vietnam, a TL-PSBR was constructed as a low-angle (15 °) horizontal system to study the cultivation of H. pluvialis for astaxanthin production. In this study, the biomass and astaxanthin productivities and astaxanthin content in the dry biomass were determined using different initial biomass (inoculum) densities (from 2.5 to 10 g dry weight m−2), different storage times of the initial biomass at 4 °C (24, 72, 120 and 168 h) and different light intensities (300–1000 µmol photons m−2 s−1). The optimal initial biomass density at light intensities between 400–600 µmol photons−2 s−1 was 5–7.5 g m−2. Algae stored for 24 h after harvest from suspension for immobilization on the TL-PSBR yielded the highest biomass and astaxanthin productivities, 8.7 g m−2 d−1 and 170 mg m−2 d−1, respectively; longer storage periods decreased productivity. Biomass and astaxanthin productivities were largely independent of light intensity between 300–1000 µmol photons m−2 s−1 but the efficiency of light use per mole photons was highest between 300–500 µmol photons m−2 s−1. The astaxanthin content in the dry biomass varied between 2–3% (w/w). Efficient supply of CO2 to the culture medium remains a task for future improvements of angled TL-PSBRs.

scholarly journals From optimization of synbiotic microparticles prepared by spray-drying to development of new functional carrot juice

2014 ◽  
Vol 20 (4) ◽  
pp. 549-564 ◽  
Author(s):  
Tanja Petreska-Ivanovska ◽  
Lidija Petrushevska-Tozi ◽  
Anita Grozdanov ◽  
Rumenka Petkovska ◽  
Jasmina Hadjieva ◽  
...  
Keyword(s):  
Spray Drying ◽  
Cold Storage ◽  
Carrot Juice ◽  
Encapsulated Cells ◽  
Gastrointestinal Conditions ◽  
High Viability ◽  
Formulation Factors ◽  
Full Factorial ◽  
And Storage ◽  
Design Experiments

Lactobacillus casei loaded chitosan-Ca-alginate microparticles enriched with the prebiotic fructooligosaccharide were prepared using spray-drying method associated with the polymers complexation and cross-linking with calcium. The concentrations of the formulation factors of alginate, chitosan and CaCl2 were optimized using 23 full factorial design. Experiments showed that microparticles with favorable physicochemical properties and high probiotic viability during preparation and storage could be obtained when 40 mg/g sodium alginate, 5 mg/g chitosan and 50 mg/g CaCl2 is used. Stability of L. casei during microencapsulation was identified by FTIR spectroscopy. The viability of the probiotic in the optimal formulation of synbiotic microparticles remained above the therapeutic minimum during incubation of 24 hours in simulated gastrointestinal conditions (7.67?0.4 log cfu/g) as well as after 3 months of cold storage (8.1?0.6 log cfu/g). High viability of L. casei was maintained during 6 weeks of cold storage when carrot juice was enriched with encapsulated cells. The effective preservation of L. casei into synbiotic microparticles provided production of new non-dairy functional food as an alternative of the population who is at risk of lactose intolerance.

scholarly journals Spray drying as a strategy for biosurfactant recovery, concentration and storage

SpringerPlus ◽  
2014 ◽  
Vol 3 (1) ◽  
pp. 49 ◽  
Author(s):  
Gisely S Barcelos ◽  
Lívia C Dias ◽  
Péricles L Fernandes ◽  
Rita Fernandes ◽  
Arnaldo C Borges ◽  
...  
Keyword(s):  
Spray Drying ◽  
And Storage

Changes in Concentration of Aflatoxin M1 during Manufacture and Storage of Skim Milk Powder

2006 ◽  
Vol 69 (3) ◽  
pp. 682-685 ◽  
Author(s):  
ORGUN DEVECİ ◽  
EMEL SEZGİN
Keyword(s):  
Spray Drying ◽  
Milk Powder ◽  
Skim Milk ◽  
Skim Milk Powder ◽  
Aflatoxin M1 ◽  
Weight Changes ◽  
Sample Weight ◽  
Powder Samples ◽  
And Storage ◽  
Different Levels

In this study, skim milk powder was produced from cow's milk contaminated artificially with aflatoxin M1 (AFM1) at two different levels, 1.5 and 3.5 μg/liter (ppb), and the effects of process stages on the AFM1 contents were investigated. Pasteurization, concentration, and spray drying caused losses of about 16, 40, and 68%, respectively, in AFM1 content of the milk contaminated with 1.5 μg/liter AFM1, and losses of 12, 35, and 59%, respectively, in the milk contaminated with 3.5 μg/liter AFM1. These losses were found to be statisticially significant at the level of P < 0.01. After 3- and 6-month storage periods, AFM1 content of the skim milk powder produced from milk with 1.5 μg/liter AFM1 decreased by 2 and 5%, respectively, whereas these rates were 2 and 4%, respectively, for the skim milk powders made from milk with 3.5 μg/liter AFM1 (after adjustment for sample weight). Changes in AFM1 content of milk powder samples were found statistically insignificant (P > 0.05 and P > 0.01) for 3- and 6-month storage periods.

Spray Drying of Spinach Juice: Characterization, Chemical Composition, and Storage

2017 ◽  
Vol 82 (12) ◽  
pp. 2873-2884 ◽  
Author(s):  
Gülşah Çalışkan Koç ◽  
Safiye Nur Dirim
Keyword(s):  
Chemical Composition ◽  
Spray Drying ◽  
And Storage

Development of a rapid screening protocol for selection of strains resistant to spray drying and storage in dry powder

2010 ◽  
Vol 1 (2) ◽  
pp. 165-174 ◽  
Author(s):  
S. Reimann ◽  
F. Grattepanche ◽  
C. Baggenstos ◽  
E. Rezzonico ◽  
B. Berger ◽  
...  
Keyword(s):  
Spray Drying ◽  
Bifidobacterium Longum ◽  
Survival Rates ◽  
Screening Method ◽  
Rapid Screening ◽  
Fast Screening ◽  
Screening Protocol ◽  
The Stability ◽  
And Storage ◽  
Selection Of

An efficient screening method for selection of Bifidobacterium longum strains resistant to spray drying and storage was developed based on randomly amplified polymorphic DNA (RAPD) for identification of the best survivors in mixed strains bacterial preparations. Three different primers were used to generate RAPD profiles of 22 B. longum strains. All strains were distinguished according to their RAPD profiles except for the strain NCC2705 and its H2O2 resistant derivative variant. The 22 strains were grouped in 3 batches of 7, 7 and 8 strains and subjected to spray drying and storage at 30 and 37 °C under anaerobic conditions. Batch survival rates after spray drying reached 17.1±4.4%. Strains showing the highest prevalence and/or resistance to storage at 37 °C were selected from individual batches for subsequent spray drying and storage testing. After 67 days of storage, NCC572 was identified as the dominant strain in powder. The stability of strain NCC572 was confirmed by performing single spray drying and storage tests. Out of 22 B. longum strains, a robust strain was identified by combining RAPD with a simultaneous screening test for survival under spray drying and storage. The method allowed a fast screening of B. longum strains in mixture for resistance to spray drying and storage compared to traditional screening procedures carried out with individual strains, in the same conditions. This approach could be applied to other stress conditions.

Effect of α-tocopherol on oxidative stability of oil during spray drying and storage of dried emulsions

2016 ◽  
Vol 88 ◽  
pp. 32-41 ◽  
Author(s):  
Maria del Rayo Hernández Sánchez ◽  
Marie-Elisabeth Cuvelier ◽  
Christelle Turchiuli
Keyword(s):  
Oxidative Stability ◽  
Spray Drying ◽  
And Storage

scholarly journals Fat properties during homogenization, spray-drying, and storage affect the physical properties of dairy powders

2009 ◽  
Vol 92 (1) ◽  
pp. 58-70 ◽  
Author(s):  
M.L. Vignolles ◽  
C. Lopez ◽  
M.N. Madec ◽  
J.J. Ehrhardt ◽  
S. Méjean ◽  
...  
Keyword(s):  
Physical Properties ◽  
Spray Drying ◽  
And Storage ◽  
Dairy Powders

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.

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