Utilization of different agro-industrial wastes for sustainable bioproduction of citric acid by Aspergillus niger

Dhillon, Gurpreet Singh; Brar, Satinder Kaur; Verma, Mausam P.; Tyagi, Rajeshwar Dayal

doi:10.1016/j.bej.2011.02.002

Cited by 107 publications

(55 citation statements)

References 32 publications

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“…It is possible to use crystallization but it carries a risk of contamination as a result of unwanted materials from the raw material and autolysis of the microbial cells (Drysdale & McKay 1995). Precipitation has been the most used method for the recovery of citric acid as it is applicable to all processes, but it requires the removal of the micelles from the fungus, fermentation broth and suspended material by filtration (Dhillon et al 2011b). Calcium oxide hydrate (milk lime) is added to the medium and the lime is then precipitated into tricalcium citrate tetrahydrate.…”

Section: Recovery Of Citric Acidmentioning

confidence: 99%

“…Lastly, crystals of citric acid monohydrate are formed in a vacuum crystallizer at a temperature of 20-25°C and anhydrous citric acid is formed at crystallization temperatures above 36.5°C (Kubicek 1986;Grewal & Kalra 1995). The wastes from this process include calcium sulphate, and microorganism residues containing amino acids, sugar, colloid, pigment and inorganic matter, which could be supplied to cement factories and dried for use in feed factories, respectively (Dhillon et al 2011b). Solvent extraction is an alternative to the purification and crystallization of citric acid, as it has reduced environmental impacts compared with the precipitation method, by making use of n-octyl alcohol and tridodecylamine for citric acid extraction, thereby eliminating the production of gypsum.…”

Section: Recovery Of Citric Acidmentioning

confidence: 99%

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Overview of citric acid production from Aspergillus niger

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Oladele

Siew

et al. 2015

Frontiers in Life Science

219

126

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Citric acid has high economic potential owing to its numerous applications. It is mostly produced by microbial fermentation using Aspergillus niger. In view of surges in demand and growing markets, there is always a need for the discovery and development of better production techniques and solutions to improve production yields and the efficiency of product recovery. To support the enormous scale of production, it is necessary and important for the production process to be environmentally friendly by utilizing readily available and inexpensive agro-industrial waste products, while maintaining high production yields. This article reviews the biochemistry of citric acid formation, choices of citric-acid producing microorganisms and raw materials, fermentation strategies, the effects of various fermentation conditions, citric acid recovery options and the numerous applications of citric acid, based on information drawn from the literature over the past 10 years.

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Section: Recovery Of Citric Acidmentioning

confidence: 99%

Section: Recovery Of Citric Acidmentioning

confidence: 99%

Overview of citric acid production from Aspergillus niger

Show

Oladele

Siew

et al. 2015

Frontiers in Life Science

219

126

View full text Add to dashboard Cite

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“…Since the dissolved sugar concentration in the sugarcane bagasse being utilized was at 2% to 3% and it was lower than the required limit, sugarcane molasses was used to increase the initial sugar concentration in the substrate (27). Leaching of citric acid with acetone led to an increase in the extraction percentage with respect to water and considering the low boiling point of this solvent (56.2°C), its recovery and reutilization are conceivable (28).…”

Section: Discussionmentioning

confidence: 99%

Citric Acid Production from Sugarcane Bagasse through Solid State Fermentation Method Using Aspergillus niger Mold and Optimization of Citric Acid Production by Taguchi Method

Yadegary

Hamidi

Alavi

et al. 2013

Jundishapur J Microbiol

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Background: Citric acid is produced in insignificant quantities in Iran. Despite its great range of utilizations, and from another aspect, high level of production of sugarcane bagasse, the related problems arising from maintenance of this acid require thinking of a measure in the direction of its optimal usage and production. Objectives: The objective of the present study is to obtain effectual variables in producing citric acid from sugarcane bagasse through Solid State Fermentation (SSF) method using Aspergillus niger mold and to optimize its mass production by employing Taguchi method. Materials and Methods:The effective parameters such as spore inoculation level, methanol percentage, solvent type, spore age, humidity percentage, initial pH of substrate, fermentation period and temperature, initial sugar percentage, autoclaving duration, nitrogen source and etc. were studied for producing citric acid from sugarcane bagasse with respect to Tagouchi method. Results: By considering the findings obtained from the tests, the highest production rate of citric acid g/kg out of untreated sugarcane bagasse is 75.45 based on the consumed sugar and a yield of 15.1 g/kg of sugarcane was achieved per day. Application of sodium hydroxide and acid pretreated sugarcane bagasse increased the production of citric acid in such a fashion that the production rates were 97.81 g/kg and 87.32 g/kg of sugarcane bagasse, respectively, compared to sodium hydroxide and acid untreated sugarcane bagasse. Conclusions:The obtained findings in the present study indicated that sugarcane bagasse is an ideal substrate in producing citric acid and the aforementioned process could be considered as a beneficial and cost-effective method in citric acid production.

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“…This process has received attention as a promising alternative for industrial enzyme production [14][15][16][17][18][19], and other products, such as aromas [20][21][22], pigments [23], biopesticides [24][25][26], organic acids [27,28], and other biochemicals.…”

Section: Use Of Solid Waste To Obtain Biocatalystsmentioning

confidence: 99%

The Protagonism of Biocatalysis in Green Chemistry and Its Environmental Benefits

et al. 2017

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Abstract:The establishment of a bioeconomy era requires not only a change of production pattern, but also a deep modernization of the production processes through the implementation of novel methodologies in current industrial units, where waste materials and byproducts can be utilized as starting materials in the production of commodities such as biofuels and other high added value chemicals. The utilization of renewable raw resources and residues from the agro-industries, and their exploitation through various uses and applications through technologies, particularly solid-state fermentation (SSF), are the main focus of this review. The advocacy for biocatalysis in green chemistry and the environmental benefits of bioproduction are very clear, although this kind of industrial process is still an exception and not the rule. Potential and industrial products, such as biocatalysts, animal feed, fermentation medium, biofuels (biodiesel, lignocelulose ethanol, CH 4 , and H 2 ), pharmaceuticals and chemicals are dealt with in this paper. The focus is the utilization of renewable resources and the important role of enzymatic process to support a sustainable green chemical industry.

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Utilization of different agro-industrial wastes for sustainable bioproduction of citric acid by Aspergillus niger

Cited by 107 publications

References 32 publications

Overview of citric acid production from Aspergillus niger

Overview of citric acid production from Aspergillus niger

Citric Acid Production from Sugarcane Bagasse through Solid State Fermentation Method Using Aspergillus niger Mold and Optimization of Citric Acid Production by Taguchi Method

The Protagonism of Biocatalysis in Green Chemistry and Its Environmental Benefits

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