Optimization of date syrup for enhancement of the production of citric acid using immobilized cells of aspergillus niger

Joint Authors

al-Amiri, Sad Abd al-Rahman Muhammad
Mustafa, Yasir S.

Source

Saudi Journal of Biological Sciences

Issue

Vol. 19, Issue 2 (30 Jun. 2012), pp.241-246, 6 p.

Publisher

Saudi Biological Society

Publication Date

2012-06-30

Country of Publication

Saudi Arabia

No. of Pages

6

Main Subjects

Chemistry

Abstract EN

Date syrup as an economical source of carbohydrates and immobilized Aspergillus niger J4, which was entrapped in calcium alginate pellets, were employed for enhancing the production of citric acid.

Maximum production was achieved by pre-treating date syrup with 1.5% tricalcium phosphate to remove heavy metals.

The production of citric acid using a pretreated medium was 38.87% higher than an untreated one that consumed sugar.

The appropriate presence of nitrogen, phosphate and magnesium appeared to be important in order for citric acid to accumulate.

The production of citric acid and the consumed sugar was higher when using 0.1% ammonium nitrate as the best source of nitrogen.

The production of citric acid increased significantly when 0.1 g/l of KH2PO4 was added to the medium of date syrup.

The addition of magnesium sulfate at the rate of 0.20 g/l had a stimulating effect on the production of citric acid.

Maximum production of citric acid was obtained when calcium chloride was absent.

One of the most important benefits of immobilized cells is their ability and stability to produce citric acid under a repeated batch culture.

Over four repeated batches, the production of citric acid production was maintained for 24 days when each cycle continued for 144 h.

The results obtained in the repeated batch cultivation using date syrup confirmed that date syrup could be used as a medium for the industrial production of citric acid.

American Psychological Association (APA)

Mustafa, Yasir S.& al-Amiri, Sad Abd al-Rahman Muhammad. 2012. Optimization of date syrup for enhancement of the production of citric acid using immobilized cells of aspergillus niger. Saudi Journal of Biological Sciences،Vol. 19, no. 2, pp.241-246.
https://search.emarefa.net/detail/BIM-359631

Modern Language Association (MLA)

Mustafa, Yasir S.& al-Amiri, Sad Abd al-Rahman Muhammad. Optimization of date syrup for enhancement of the production of citric acid using immobilized cells of aspergillus niger. Saudi Journal of Biological Sciences Vol. 19, no. 2 (2012), pp.241-246.
https://search.emarefa.net/detail/BIM-359631

American Medical Association (AMA)

Mustafa, Yasir S.& al-Amiri, Sad Abd al-Rahman Muhammad. Optimization of date syrup for enhancement of the production of citric acid using immobilized cells of aspergillus niger. Saudi Journal of Biological Sciences. 2012. Vol. 19, no. 2, pp.241-246.
https://search.emarefa.net/detail/BIM-359631

Data Type

Journal Articles

Language

English

Notes

Includes bibliographical references : p. 245-246

Record ID

BIM-359631