THE APPLICATION OF LOOFA FOR THE IMMOBILIZATION OF NON FLOCCULATING YEAST CELLS

Q: How can I download an article?

To download an article from SID, first log in to the site, search for the article title, and click on the 'Download Article' option.

Q: How can I download an ISI article?

To download an ISI article on SID, enter the keyword or article title in the search bar, view the relevant results, click on the desired article, and select the 'Download Article' option.

Q: How can I access the SID database?

To access the SID database, visit SID.ir, create an account, and log in to access scientific resources.

Q: Is downloading articles from SID free?

Some articles on SID are available for free, while others require payment. Details are specified on the article's page.

BONAKDARPOUR B.; VAHABZADEH F.; ABBASI AZADEH

مرکز اطلاعات علمی Scientific Information Database (SID) - Trusted Source for Research and Academic Resources

Journal Paper

Paper Information

Journal: JOURNAL OF AGRICULTURAL ENGINEERING RESEARCH Year:2003 | Volume:4 | Issue:14 Page(s): 37-54

Download Full-Text

Persian Verion

View:

924

Download:

Cites:

Information Journal Paper

Title

THE APPLICATION OF LOOFA FOR THE IMMOBILIZATION OF NON FLOCCULATING YEAST CELLS

Author(s)

BONAKDARPOUR B. | VAHABZADEH F. | ABBASI AZADEH | Issue Writer Certificate

Keywords

LOOFA CYLINDRICAQ4

CELL IMMOBILIZATIONQ4

FLOCCULATIONQ4

CHITOSANQ4

S.CEREVISAEQ4

ETHANOL FERMENTATIONQ4

Abstract

Loofa (LOOFA CYLINDRICA) is a dried plant of the Aubergine family and the physical structure and specific characteristics of this plant, such as chemical, heat and microbiological stability, makes it a suitable carrier for the immobilization of microbial cells. This plant grows in the warm and humid areas in the north and south of Iran and has high porosity (75-84%) as well as low density (0.13-0.039 g/cm3) and compared to other existing carriers such as polyurethane foam, is very suitable for CELL IMMOBILIZATION. However, the high specific volume of the pores in the structure of this carrier, in the range 16/48-19/2 g/ cm2, means that only cell flocs can be significantly entrapped inside the pores. In this study Loofa was used as a carrier for the immobilization of Sacharomyces cerevisae cells used in the production of ethanol from carbohydrate substrates. Since these cells do not have the ability to flocculate, CHITOSAN, a cationic material, was used to induce the FLOCCULATION of S. cerevisae cells. The results showed that a concentration of 8 miligram per gram of cell results in 92% cell FLOCCULATION in a period of 1 hour. At this concentration, 60% of the cells where immobilized in the Loofa carrier in a period of two and a half hours with an initial inoculum of 0.1 gram cells per gram of Loofa. The use of such immobilized cells for the production of ethanol from a synthetic medium increased the productivity of ethanol production two folds compared to when free cells where used. However, during the course of the ethanol production process the concentration of free cells increased signifying the release of the yeast cells from the Loofa support. Addition of CHITOSAN at specific points during the fermentation was shown to decrease this rate of cell release but also resulted in a decrease in the productivity of ethanol production which was attributed to the inhibitory effect of CHITOSAN on the fermentative activity of S. cerevisae cells. Investigating the use of lower CHITOSAN concentrations or the use of other non-inhibitory flocculents id suggested for future work.

Cites

No record.

References

No record.

Cite

APA: Copy

BONAKDARPOUR, B., VAHABZADEH, F., & ABBASI, AZADEH. (2003). THE APPLICATION OF LOOFA FOR THE IMMOBILIZATION OF NON FLOCCULATING YEAST CELLS. JOURNAL OF AGRICULTURAL ENGINEERING RESEARCH, 4(14), 37-54. SID. https://sid.ir/paper/28004/en

Vancouver: Copy

BONAKDARPOUR B., VAHABZADEH F., ABBASI AZADEH. THE APPLICATION OF LOOFA FOR THE IMMOBILIZATION OF NON FLOCCULATING YEAST CELLS. JOURNAL OF AGRICULTURAL ENGINEERING RESEARCH[Internet]. 2003;4(14):37-54. Available from: https://sid.ir/paper/28004/en

IEEE: Copy

B. BONAKDARPOUR, F. VAHABZADEH, and AZADEH ABBASI, “THE APPLICATION OF LOOFA FOR THE IMMOBILIZATION OF NON FLOCCULATING YEAST CELLS,” JOURNAL OF AGRICULTURAL ENGINEERING RESEARCH, vol. 4, no. 14, pp. 37–54, 2003, [Online]. Available: https://sid.ir/paper/28004/en

Related Journal Papers