A novel method for bioethanol production using immobilized yeast cells in calcium-alginate films and hybrid composite pervaporation membrane

2018 ◽  
Vol 247 ◽  
pp. 165-173 ◽  
Author(s):  
Eduardo Leal Isla Santos ◽  
Magdalena Rostro-Alanís ◽  
Roberto Parra-Saldívar ◽  
Alejandro J. Alvarez
Keyword(s):  
Hybrid Composite ◽  
Calcium Alginate ◽  
Yeast Cells ◽  
Bioethanol Production ◽  
Immobilized Yeast ◽  
Pervaporation Membrane ◽  
Immobilized Yeast Cells ◽  
Novel Method

A Novel Immobilization Method of Saccharomyces cerevisiae on Fermentation of Nipa Palm Sap for Fuel Grade Bioethanol Production

2020 ◽  
Vol 849 ◽  
pp. 53-57
Author(s):  
Chairul ◽  
Evelyn ◽  
Syaiful Bahri ◽  
Ella Awaltanova
Keyword(s):  
Saccharomyces Cerevisiae ◽  
Acetic Acid ◽  
Sugar Content ◽  
Yeast Cells ◽  
Eastern Coast ◽  
Bioethanol Production ◽  
Fermentation Time ◽  
Immobilized Yeast ◽  
Immobilized Yeast Cells ◽  
Nipa Palm

Nipa palm (Nypa fruticans) spreads abundantly in the mangrove forests of eastern coast of Sumatera Island, Indonesia. Nipa palm sap can be used as a very high-gravity (VHG) substrate for fermentation. In this research, batch fermentation of nipa sap with initial sugar content of 262.713 mg/ml using immobilized Saccharomyces cerevisiae yeast cells was studied. Immobilization of the yeasts in Na-alginate by droplet method and addition of 0.2% v/v Tween 80 and 0.5g/l ergosterol to the immobilized cells were first carried out. Then, the effect of cells weight percentage (5, 10, 15, and 20% w/v) and fermentation time (24, 36, 48, 60, 72, 84, and 96 hrs) on the bioethanol production were investigated. After, the analysis of bioethanol concentration was investigated using Gas Chromatography. The bioethanol production increased with the fermentation time until reaching a maximum value at all cell weights. Except with the 20% w/v, this peak was followed by a decrease in the bioethanol production at cell weights of 5, 10, and 15% w/v. This phenomenon may be explained by degradation of bioethanol into acetic acid resulting in the decreased concentration at the end of fermentation. The formation of acetic acid was characterized by decreases in the pH values of the fermentation medium. On the contrary, the bioethanol level tended to increase until the end of fermentation with the immobilized yeast cells of 20% w/v. High number of available immobilized yeast cells at the end of fermentation, accumulation of bioethanol produced at earlier times, and no further conversion of bioethanol to acetic acid could be the reasons for this increase. The optimum conditions for bioethanol production were 20% w/v cell weight and 96 hr fermentation time, at bioethanol concentration of 17.57% v/v.

EFFECT OF CALCIUM ALGINATE COATING ON THE PERFORMANCE OF IMMOBILIZED YEAST CELLS IN CALCIUM ALGINATE BEADS

2000 ◽  
Vol 177 (1) ◽  
pp. 1-14 ◽  
Author(s):  
YOSHIMITSU UEMURA ◽  
NAOKl HAMAKAWA ◽  
HIDEKAZU YOSHIZAWA ◽  
HIROKI ANDO ◽  
KAZUYA IJICHIY ◽  
...  
Keyword(s):  
Calcium Alginate ◽  
Alginate Beads ◽  
Yeast Cells ◽  
Immobilized Yeast ◽  
Calcium Alginate Beads ◽  
Immobilized Yeast Cells ◽  
Alginate Coating

Electrophoretic mobility of external invertase from free and gel-immobilized yeast cells

1995 ◽  
Vol 146 (3) ◽  
pp. 217-225 ◽  
Author(s):  
E de Alteriis ◽  
J Zueco ◽  
H Rico ◽  
R Sentandreu ◽  
P Parascandola
Keyword(s):  
Electrophoretic Mobility ◽  
Yeast Cells ◽  
Immobilized Yeast ◽  
Immobilized Yeast Cells

Continuous ethanol fermentation using immobilized yeast cells

1984 ◽  
Vol 26 (8) ◽  
pp. 992-997 ◽  
Author(s):  
Minoru Nagashima ◽  
Masaki Azuma ◽  
Sadao Noguchi ◽  
Keiichi Inuzuka ◽  
Hirotoshi Samejima
Keyword(s):  
Ethanol Fermentation ◽  
Yeast Cells ◽  
Immobilized Yeast ◽  
Continuous Ethanol Fermentation ◽  
Immobilized Yeast Cells

scholarly journals Continuous production of pectinase by immobilized yeast cells on spent grains

2003 ◽  
Vol 96 (6) ◽  
pp. 513-518 ◽  
Author(s):  
Catarina Almeida ◽  
Tomáš Brányik ◽  
Pedro Moradas-Ferreira ◽  
José Teixeira
Keyword(s):  
Continuous Production ◽  
Yeast Cells ◽  
Immobilized Yeast ◽  
Spent Grains ◽  
Immobilized Yeast Cells
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