The ability of commercially-available citric, oxalic and gluconic acids to bind Co#+ and Zn#+ was investigated and compared with culture filtrates from Aspergillus niger, a fungus capable of citric, gluconic and oxalic acid production, grown in the presence and absence of cobalt or zinc phosphate. This work demonstrated that citric and oxalic acid and the A. niger culture filtrates can bind Co#...

There has been an increasing trend in the production and consumption of local and imported fruit juices in Iran. The presence of impurities and foreign matter in finished products for human consumption is of great concern because they present health hazards when they exceed beneficial limits. The manufacture of juices requires special attention in terms of purity and the sources of water and it...

Background: Summer savory (Satureja hortensis L.) is one of the most important medicinal and spice plants cultivated in many parts of the world. Objective: A greenhouse experiment was conducted to study the effects of FeSO4 and citric acid application on the morphological traits and essential oil content and its component, gamma-terpinene in S. hortensis. Methods: FeSO4 in four levels (0, 3, ...

The Present work reports an economic and higher yield production of Citric acid by aerobic submerged fermentation of sucrose using Aspergillus Niger-NCIM 705. Regression analysis was carried out for the Univariate search experimental data using DATAFIT software to evaluate the degree of effect of each of the variables: Initial sucrose Concentration, Fermentation Temperature, Stirrer speed, oxyg...

UNLABELLED A mutation was induced in Aspergillus niger wild strain using ethidium bromide resulting in enhanced expression of citric acid by three folds and 112.42 mg/mL citric acid was produced under optimum conditions with 121.84 mg/mL of sugar utilization. Dendograms of 18S rDNA and citrate synthase from different fungi including sample strains were made to assess homology among different fu...

BACKGROUND Unlike the well-studied backer yeast where catabolite repression represents a burden for mixed substrate fermentation, Yarrowia lipolytica, an oleaginous yeast, is recognized for its potential to produce single cell oils and citric acid from different feedstocks. These versatilities of Y. lipolytica with regards to substrate utilization make it an attractive host for biorefinery appl...

Citric acid is the most important organic produced in tonnage and extensively used food pharmaceutical industries. It mainly by submerged fermentation using Aspergillus niger or Candida sp. from different sources of carbohydrates, such as molasses starch-based media. In view surges demand growing markets, there always a need for discovery development better production techniques solutions to im...