Artrocarpus heterophyllus—a potential substrate for citric acid biosynthesis using Aspergillus niger

Angumeenal, A. R.; Venkappayya, D.

doi:10.1016/j.lwt.2004.04.014

Cited by 19 publications

(13 citation statements)

References 14 publications

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“…The studied strain did not consume the citric acid produced even when low concentrations of glucose were reached in the culture medium (Angumeenal and Venkappayya 2005;Haq et al 2003;Demirel et al 2005). This behavior was different from the behavior of the strains reported in previous studies.…”

Section: Assayscontrasting

confidence: 93%

Optimization of Trace Metals Concentration on Citric Acid Production by Aspergillus niger NRRL 2001

Guilherme

Pinto

Rodrigues

2007

Food Bioprocess Technol

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Citric acid is nowadays produced by submerged fermentation of Aspergillus niger. The process yield depends on the composition of the medium, as well as on the microorganism strain. In this work, the effect of Fe +3 , Zn +2 , and Mn +2 on citric acid production by A. niger NRRL 2001 is presented. The culture medium composition was glucose (120 g/L) KH 2 PO 4 (1.0 g/L); K 2 HPO 4 (1.0 g/L), MgSO 4 .7H 2 O (0.5 g/L), (NH 4 ) 2 SO 4 (3.0 g/L). The ions Fe +3 , Zn +2 , and Mn +2 had their concentrations changed according to an experimental design. The experiments were carried out in an orbital shaker at 200 rpm and 30°C. The strain produced an extracellular polysaccharide that was also quantified. The optimum experimental condition was found using 7.0 mg/L of Fe +3 and 6.5 mg/L of Zn +2 in absence of Mn +2 . No oxalic acid formation was observed using this experimental condition. Metal contents were not significant for the production of the polysaccharide. The highest production rate (2.95 g L −1 day −1 ) was reached after 10 days of fermentation. After this period, the productivity decreased slightly. In 20 days, the citric acid production rate (2.44 g L −1 day −1 ) was 82% of the highest productivity. The conversion into citric acid increased continuously, yielding 45.8% in 20 days of fermentation.

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Section: Assayscontrasting

confidence: 93%

Optimization of Trace Metals Concentration on Citric Acid Production by Aspergillus niger NRRL 2001

Guilherme

Pinto

Rodrigues

2007

Food Bioprocess Technol

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“…Alternative substrates have been studied as low-cost substrates for microbial fermentation to produce several products for chemical, petrochemical, pharmaceutical, and food industry (Lacaze et al 2007;Vazquez et al 2006;Angumeenal and Venkappaya 2005;Tony et al 2004;Adham 2002;Kuerbanoglu 2004;Kumasr et al 2003;Hang and Woodams 2000;El-Samragy et al 1996;Stredanska et al 1993). Agriculture residues and wastes are the most suitable lowcost substrates for microbial cultivation.…”

Section: Introductionmentioning

confidence: 99%

Dextransucrase Stability in Cashew Apple Juice

Honorato

Rodrigues

2008

Food Bioprocess Technol

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The use of agriculture waste as substrate for biotechnological process became an interesting alternative to reduce production costs and the negative impact of agricultural wastes disposal in the environment. In Brazil, cashew tree cultivation is done aiming the cashew nut production, and tons of cashew apples are wasted in the field after the nut removal. Thus, cashew apple juice can be used as low cost substrate for biotechnological process. In this study, the stability of dextransucrase produced in a fermentation medium using cashew apple juice as substrate was evaluated. The crude enzyme was stable at 30°C for 30 h at pH ranging from 4.5 to 5.5. The partially purified enzyme was stable in non-fermented cashew apple juice at pH 5.0 for 96 h at 30°C. The high stability of the enzyme in cashew apple juice at room temperature allows its industrial use without needing the enzyme purification, consequently reducing process costs.

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“…Alternative low cost substrates have been investigated for microbial fermentation to produce several products of interest of the chemical, petrochemical, pharmaceutical and food industry [9][10][11][12]. Agricultural residues and wastes are the most suitable low cost substrates for microbial cultivation.…”

Section: Introductionmentioning

confidence: 99%

Kinetic study of mannitol production using cashew apple juice as substrate

Fontes

Honorato

Rabelo

et al. 2008

Bioprocess Biosyst Eng

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The use of agriculture excess as substrate in industrial fermentations became an interesting alternative to reduce production costs and to reduce negative environmental impact caused by the disposal of these products. In this work, a kinetic study of mannitol production using cashew apple juice as substrate was studied. The carbohydrates of cashew apple juice are glucose and fructose. Sucrose addition favored the yield of mannitol (85%) at the expense of lower productivity. The best results were obtained applying only cashew apple juice as substrate, containing 50 g L(-1) of total reducing sugar (28 g L(-1) of fructose), yielding 18 g L(-1) of mannitol with 67% of fructose conversion into mannitol and productivity of 1.8 g L(-1) h(-1).

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Artrocarpus heterophyllus—a potential substrate for citric acid biosynthesis using Aspergillus niger

Cited by 19 publications

References 14 publications

Optimization of Trace Metals Concentration on Citric Acid Production by Aspergillus niger NRRL 2001

Optimization of Trace Metals Concentration on Citric Acid Production by Aspergillus niger NRRL 2001

Dextransucrase Stability in Cashew Apple Juice

Kinetic study of mannitol production using cashew apple juice as substrate

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