scholarly journals Effects of dietary baker’s yeast extract on the growth, blood indices and histology of Nile tilapia (Oreochromis niloticusL.) fingerlings

2018 ◽  
Vol 24 (6) ◽  
pp. 1709-1717 ◽  
Author(s):  
Mohamed S. Hassaan ◽  
Soaad A. Mahmoud ◽  
Sylwia Jarmolowicz ◽  
Ehab R. El‐Haroun ◽  
Eman Y. Mohammady ◽  
...  
Keyword(s):  
Yeast Extract ◽  
Nile Tilapia ◽  
Baker’S Yeast ◽  
Baker's Yeast ◽  
Blood Indices

scholarly journals Attempts to detect lycopersene formation in yeast

1968 ◽  
Vol 106 (1) ◽  
pp. 311-315 ◽  
Author(s):  
S. S. Scharf ◽  
K. L. Simpson
Keyword(s):  
Thin Layer ◽  
Silicic Acid ◽  
Yeast Extract ◽  
Rhodotorula Glutinis ◽  
Baker’S Yeast ◽  
Baker's Yeast ◽  
Chromatographic Separations ◽  
Large Samples ◽  
Staining Techniques ◽  
Cells Cultured

1. β-Ionone vapour has been shown to cause an increase in the more saturated carotenes and a decrease in the less saturated carotenes of Rhodotorula glutinis. Lycopersene (dihydrophytoene) has been proposed as a precursor to phytoene. Attempts were made to isolate lycopersene from β-ionone-treated cultures of R. glutinis. 2. Large samples of β-ionone-treated cultures were examined for the presence of lycopersene. Spots were detected on silicic acid plates that could not be differentiated from synthetic lycopersene on the basis of column and thin-layer chromatographic separations and staining techniques. The lycopersene-like substance could be obtained from non-treated pigmented yeast as well as baker's yeast. 3. An extraction of bacterial-grade yeast extract also yielded a lycopersene-like substance. The extracts of R. glutinis cells cultured on media not containing yeast extract did not contain the lycopersene-like compound. 4. No significant carbon was incorporated into the lycopersene zone from 14C-labelled mevalonate, acetate and glucose by R. glutinis and baker's yeast. 5. These results indicate that compounds may exist with chromatographic properties similar to lycopersene, but that lycopersene could not be detected in either a pigmented or a non-pigmented yeast.

Cytokine responses in the common carp, Cyprinus carpio L. treated with baker's yeast extract

Aquaculture ◽  
2012 ◽  
Vol 356-357 ◽  
pp. 169-175 ◽  
Author(s):  
G. Biswas ◽  
H. Korenaga ◽  
H. Takayama ◽  
T. Kono ◽  
H. Shimokawa ◽  
...  
Keyword(s):  
Common Carp ◽  
Yeast Extract ◽  
Cyprinus Carpio ◽  
Baker’S Yeast ◽  
Baker's Yeast ◽  
Cytokine Responses ◽  
Common Carp Cyprinus Carpio ◽  
Carp Cyprinus Carpio ◽  
The Common

scholarly journals Utilization of baker's yeast (Saccharomyces cerevisiae) for the production of yeast extract: Effects of different enzymatic treatments on solid, protein and carbohydrate recovery

2007 ◽  
Vol 72 (5) ◽  
pp. 451-457 ◽  
Author(s):  
Tatjana Vukasinovic-Milic ◽  
Marica Rakin ◽  
Slavica Siler-Marinkovic
Keyword(s):  
Saccharomyces Cerevisiae ◽  
Yeast Extract ◽  
Cell Lysis ◽  
Enzyme Concentration ◽  
Baker’S Yeast ◽  
Basic Method ◽  
Baker's Yeast ◽  
Hydrolysis Time ◽  
Yeast Saccharomyces Cerevisiae

Yeast extract (YE) was produced from commercial pressed baker's yeast (active and inactivated) using two enzymes: papain and lyticase. The effects of enzyme concentration and hydrolysis time on the recovery of solid, protein and carbohydrate were investigated. Autolysis, as a basic method for cell lysis was also used and the results compared. The optimal extraction conditions were investigated. The optimal concentrations of papain and lyticase were found to be 2.5 % and 0.025 %, respectively.

scholarly journals Kelangsungan Hidup Larva Ikan Nila yang Berasal Dari Induk yang Diberi Pakan Berimunostimulan

2014 ◽  
Vol 2 (3) ◽  
Author(s):  
Ayu Maleko ◽  
Hengky J Sinjal ◽  
Henky Manoppo
Keyword(s):  
Survival Rate ◽  
Nile Tilapia ◽  
Research Result ◽  
Baker’S Yeast ◽  
Larval Rearing ◽  
Baker's Yeast ◽  
Brood Stock ◽  
Larval Quality ◽  
Different Doses ◽  
Increase Survival Rate

The objective of this research was to evaluate the effect of feed supplemented with baker’s yeast on survival rate of nile tilapia larvae and to determine the effective dose of baker’s yeast that could optimally improve larval quality.  The research was conducted at Pathology and Clinic of Fish Disease from June – September 2014.  Fish as brood stock candidates was cultivated at five concrete tanks (2x1x1 m3) at a density of 30 fish per tank.  Each tank was equipped with water inlet, outlet and water pump for recirculating and aerating.  After seven days of adaptation, fish was fed pellet supplemented with baker’s yeast at five different doses (0, 10, 20, 30, 40 g/kg food) for four consecutive weeks at 4%/bb/day, twice daily.  Larva was captured with seser and moved into five glass aquaria with density of 20 larvae/aquarium and reared for two weeks.  Data collected was survival rate of larvae achieved until the end of larval rearing.  Research result showed that larvae produced by brood stock fed food supplemented with 10 g baker’s yeast per kg food had the highest survival rate namely 60%.  As conclusion, supplementation of baker’s yeast into brood stock feed might increase survival rate of larvae.   Keywords:  nile tilapia, baker’s yeast, larvae, survival rate

Immune stimulant effects of a nucleotide-rich baker's yeast extract in the kuruma shrimp, Marsupenaeus japonicus

Aquaculture ◽  
2012 ◽  
Vol 366-367 ◽  
pp. 40-45 ◽  
Author(s):  
G. Biswas ◽  
H. Korenaga ◽  
R. Nagamine ◽  
T. Kono ◽  
H. Shimokawa ◽  
...  
Keyword(s):  
Yeast Extract ◽  
Baker’S Yeast ◽  
Baker's Yeast ◽  
Marsupenaeus Japonicus ◽  
Kuruma Shrimp

scholarly journals Process optimization for the production of Yeast Extract using fresh Baker’s yeast

2020 ◽  
Vol 1 (2) ◽  
Author(s):  
Muhammad Asjad Khan ◽  
Muhammad Mohsin Javed ◽  
Asia Ahmed ◽  
Sana Zahoor ◽  
Kaleem Iqbal
Keyword(s):  
Yeast Extract ◽  
Nitrogen Sources ◽  
Maximum Growth ◽  
Solid Content ◽  
Baker’S Yeast ◽  
Yeast Cells ◽  
Vitamin Supplement ◽  
Baker's Yeast ◽  
Yeast Saccharomyces Cerevisiae ◽  
Yeast Biomass

Yeast extract is extensively applied in various food industries as a food additive to enhance to flavor of food products or as a vitamin supplement. It is also considered as a crucial component of microbiological media. The current study was conducted to optimize a process for the production of yeast extract by using Baker’s yeast (Saccharomyces cerevisiae). The cultivation of yeast biomass was performed in a stirred fermenter. The influence of numerous physical and chemical parameters such as carbon and nitrogen sources, temperature, pH and agitation were evaluated on the production of yeast cells by employing one factor at a time approach and optimum conditions for the production of maximum yeast biomass was determined. The maximum growth was attained using molasses as a substrate at 30ºC supplemented with urea at 150 rpm with pH 4.5. After fermentation, cells were separated by centrifugation and were ruptured by adopting different techniques and autolysis was found the most viable method. Various techniques were applied to dry the yeast extract and the spray dryer was appeared as most effective one. Yeast extract acquired after drying was subjected to various analysis including protein and solid content estimation and amino acid profiling and compared with commercial yeast extract. The dried yeast extract was incorporated in media preparations to grow various microorganisms including yeast, fungi and bacteria and considerable growth was observed. These promising results indicated that the developed process is a cost effective alternative approach for the production of yeast extract.

scholarly journals Evaluation of Baker’s Yeast (Saccharomyces cereviciae) In Enhancing Non Specific Immune Response and Growth of Nile Tilapia

2013 ◽  
Vol 1 (1) ◽  
Author(s):  
Usy N Manurung ◽  
Henky Manoppo ◽  
Reiny A Tumbol
Keyword(s):  
Immune Response ◽  
Nile Tilapia ◽  
Leucocyte Count ◽  
Baker’S Yeast ◽  
Control Fish ◽  
Total Leucocyte Count ◽  
Baker's Yeast ◽  
Immune Parameters ◽  
Nonspecific Immune Response ◽  
Phagocytosis Activity

This research was conducted to evaluate the efficacy of baker’s yeast in enhancing nonspecific immune response and growth of Nile tilapia. After two weeks of acclimatization in fiber tank, juveniles were put into glass aquarium at the density of 15 fish/ aquarium. Fish were fed pellet supplemented with baker’s yeast as treatment for four weeks at 5% of body weight per day, twice daily (08.00 and 17.00). Five doses of treatment used in this research were A (0 g yeast/kg pellet), B (10 g yeast/kg pellet), C (20 g yeast/kg pellet), D (30 g yeast/kg pellet), E (40 g yeast/kg pellet), Immune parameters included total leucocyte count (TLC) and phagocytosis activity were measured at the end of experiment. Fish growth was weighing at the end of research period. Anova was used to evaluate the effect of baker’s yeast on immune parameters and growth while to evaluate the different effect between treatment, Duncan test was used. Research result showed that after four week of feeding, TLC of fish fed diet supplemented with baker’s yeast significantly different compared to control fish. The highest TLC of fish was achieved in treatment B followed by treatment C. It was also found that phagocytosis activity of fish increased significantly in fish fed treatment diet with the highest PA was observed in treatment C. PA of fish in treatment C was different significantly compared to a treatment A, D and E but between treatment C and B, no significant difference was observed. Application of baker’s yeast in diet also significantly increased growth of fish (p=0,00). Fish fed diet supplemented with 20 g baker’s yeast/kg pellet has the highest weight gain compared to other fish in other treatments. It was concluded that the used of baker’s yeast at 20-30 g/kg pellet for four weeks could enhance nonspecific immune response and growth of Nile tilapia. Keywords: Saccharomyces cereviciae, total leucocyte count (TLC), Phagocytosis Activity, growth, Oreochromis niloticus

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