INSTITUTE OF BREWING ANALYSIS COMMITTEE MEASUREMENT OF YEAST CONCENTRATION

1968 ◽  
Vol 74 (5) ◽  
pp. 427-429 ◽  
Author(s):  
C. Rainbow
Author(s):  
Amr M.A. Elmasry ◽  
Luis A. Miranda ◽  
Germán Mendoza ◽  
Fernando X. Plata

Background: The effects of the probiotics vary with the doses and strains used for this reason, a study was conducted over 35 days to determine the effect of live yeast supplementation in the diet of growing rabbits on growth performance and apparent nutrient digestibility.Methods: A total of 60 New Zealand and California rabbits (5 weeks old, average body weight 0.881±0.015 kg) were housed in 30 cages. They were fed with a control diet based on alfalfa and maize or barley grains and supplemented with Procreatin®7 (Saccharomyces cerevisiae CNCM I 1077) or Biosaf® SC47 (Saccharomyces cerevisiae NCYC Sc47) at three doses, namely 0, 6.4, or 12.8 ×109 CFU per kg basal diet.Result: The higher yeast concentration had a positive effect (P less than 0.01) on final body weight (BW), average daily gain (ADG) and carcass weight (CW). However, there were no significant differences in dry matter intake. As a result of this, the feed conversion ratio (FCR) decreased (P less than 0.01). Significant increases (P less than 0.05) in nutrient digestibility (DM, OM, NDF and ADF) were observed with both grains. The use of yeast in maize and barley-based diets of rabbits has positive effects on growth performance and nutrient digestibility.


2017 ◽  
Vol 2 (2) ◽  
pp. 7-13
Author(s):  
Muhammad Akhsan Akib ◽  
Henny Setiawati

Whey waste contains organic materials, particularly high complex proteins and amino acids in the form of suspended and dissolved solids, however the utilization of whey as a organic liquid fertilizer still has a less attention. Thus the Utilization of the whey waste through anaerobic process to be used as a organic liquid fertilizer is the purpose of the research. This research was conducted using factorial design with completely randomized design (CRD) which consists of two factors: the yeast concentration (without yeast; 0.25 and 0.50 g/500 ml of whey waste) and the fermentation time (0, 3, and 5 days). The variables measured were the content of organic C, C/N Ratio, and Total N, P2O5 and K2O contents. The results showed that the fermented whey waste on the different fermentation time and yeast concentration had increased the organic C and C/N ratio, but decreased P2O5 and K2O contents. The utilization of whey combined with solid or other liquid wastes gave a chance to produce a quality organic liquid fertilizer 


Jurnal Agrium ◽  
2017 ◽  
Vol 14 (2) ◽  
pp. 45
Author(s):  
Puri Handayani ◽  
Khaidir Khaidir ◽  
Zurrahmi Wirda

The objective of this research is to reveal the influence of the type of gadung to the produced ethanol content, the yeast concentration which is suitable to get the maximum ethanol and to know the interaction between the type of gadung and the yeast concentration on the ethanol content produced. The research using Randomized Complete Design with factorial pattern consisted of 2 factors: the gadung bulb type (U), as the first factor consisting of white gadung tuber (U1) and yellow bulb tuber (U2) second factor yeast concentration consisting of 2 , 5% (R1), 3% (R2), 3.5% (R3). Fermentation duration is done for 3 days. Each treatment is repeated 3 times. The results showed that the proximate analysis on two types of gadung is highest in white gadung. The average width of the highest gadung leaves on white gadung . Test brix on the highest gadung tubers on white gadung. On observation of the highest yield of ethanol occurs on the type of white gadung  and 2.5% yeast concentration. The best type of mass observation occurred in yellow gadung tuber type and 2.5% yeast concentration. Observation of initial pH of ethanol was highest in white gadung and yeast concentration 2.5%. Observation of pH after distillation is highest on white gadung and at yeast concentration 2.5%. The highest concentration of ethanol content on yellow gadung and at yeast consentation 2.5%. The observation of the highest ash content on yellow gadung and at yeast concentration 3.5%.


1954 ◽  
Vol 31 (2) ◽  
pp. 74-74
Author(s):  
J. T. R. Andrews ◽  
H. Mathews ◽  
H. C. Bennett ◽  
W. A. Peterson ◽  
E. L. Boley ◽  
...  
Keyword(s):  

1945 ◽  
Vol 22 (3) ◽  
pp. 62-68 ◽  
Author(s):  
H. C. Bennett ◽  
Eugene W. Blank ◽  
J. N. Borglin ◽  
Henry E. Cutts ◽  
Charles J. Gundel ◽  
...  

2021 ◽  
Author(s):  
Pleasure Chisom Ajayo ◽  
Mei Huang ◽  
Li Zhao ◽  
Dong Tian ◽  
Qin Jiang ◽  
...  

Abstract By way of broadening the use of diverse sustainable bioethanol feedstocks, the potentials of Paper mulberry fruit juice (PMFJ), as a non-food, sugar-based substrate, was for the first time evaluated for fuel ethanol production. Without any external nutrient supplementation, the suitability of PMFJ was proven, as maximum ethanol concentration (56.4 g/L), and yield (0.39 g/g), were achieved within half a day of the start of fermentation, corresponding to a very high ethanol productivity of 4.7 g/L/hr. Using Response Surface Methodology, established potentials were further maximized through statistical optimization of process conditions of temperature (20 – 40 ⁰C), yeast concentration (0.5 – 2 g/L), and pH (4 – 6). At the optimal temperature of 30 ⁰C, inoculum size of 0.55 g/L, and pH of 5, ethanol concentration, productivity, and yield obtained were 73.69 g/L, 4.61 g/L/hr, and 0.48 g/g, respectively. Under this ideal process conditions, bioethanol from PMFJ compares favorably with typical sugar-based energy crops, highlighting its resourcefulness as a high value biomass resource for fuel ethanol production.


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