Evaluation of Citric Acid Production Potentials of Food Processing Wastes

Ogunka-Nnoka, CU; Mepba, HD; Abbey, BW; Akaninwor, Joyce Oronne

doi:10.4314/njns.v32i2.71714

Cited by 3 publications

(3 citation statements)

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“…The medium is locally available and cheap in cost. Though cassava peel which is an abundant agro waste in the processing of cassava to various products has been used in several biotechnological processes to produce enzymes (Sani et al, 1992;Lateef et al, 2008;, bio-oil (Ki et al, 2013), carriers for biofertilizer production (Ogbo and Odo, 2011), bio-ethanol (Sivamani and Baskar, 2015), and animal feeds (Olafadehan et al, 2011;Ruqayyah et al, 2014), there is limited utilization/evaluation of the waste for the production of citric acid (Ogunka-Nnoka et al, 2011).…”

Section: Generation Of Mutants and Production Of Citric Acid In Cassamentioning

confidence: 99%

Optimization of citric acid production using a mutant strain of Aspergillus niger on cassava peel substrate

Adeoye

Lateef

Kana

2015

Biocatalysis and Agricultural Biotechnology

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Section: Generation Of Mutants and Production Of Citric Acid In Cassamentioning

confidence: 99%

Optimization of citric acid production using a mutant strain of Aspergillus niger on cassava peel substrate

Adeoye

Lateef

Kana

2015

Biocatalysis and Agricultural Biotechnology

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“…However, the generation of waste materials (peels) resulting from their processing pose pollution problems [2]. Notwithstanding this, in many cases, these peels might have potentials for conversion into useful products of higher value after biological treatment [3,4]. The fermentable sugar produced from the hydrolysis of cellulosic fraction of the waste feed stock can serve as carbon source for microbes, especially Saccharomyces cerevisiae which is capable of fermenting sugar to ethanol.…”

Section: Introductionmentioning

confidence: 99%

Potentials of Chemical and Biological Hydrolysis of Agricultural Wastes in the Production of Ethanol, Single Cell Protein (SCP) and Vinegar

Ogunka-Nnoka¹,

Abbey²

2017

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The potentials of Chemical (acid) and Biological (Aspergillus niger and Rhizopus oryzae) hydrolysis on some agricultural wastes, namely: peels from ripe plantain (RPP), unripe plantain (UPP), red cocoyam (RCP), white cocoyam (WCP), yam (YP), cassava (CP) and garri processing chaff (GPC) into beneficial by products (Ethanol, Single Cell Protein and Vinegar) were investigated using standard methods. Glucose yield ranged from 4.68-17.24mg/g, 2.41-13.84mg/g and 1.28-5.22mg/g for A. niger R. oryzae and Acid hydrolysis of the various wastes. Inoculating the hydrolysates with Saccharomyces cerevisiae yielded significant (p < 0.05) amount of ethanol after 120hrs, with significant (p < 0.05) reduction in glucose contents. Ethanol contents ranged from 3.82-6.89%, 3.74-6.44% and 3.28-6.25%, while the amount of single cell protein (SCP) obtained from the biomass after ethanol fermentation ranged from 9.10-15.80%, 7.50-13.11% and 6.00-10.20% for A. niger, R. oryzae and Acid hydrolysates respectively. The vinegar obtained after seven days fermentation of the alcoholic product had acetic acid concentrations ranging from 0.14-1.10%, 0.13-0.99% and 0.11-0.95% for A. niger, R. oryzae and acid treatments respectively. This study has shown usefulness of microbial methods of hydrolysis over the chemical treatment method, for improved yield of fermentation by products.

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“…The solid state fermentation process has a higher citric acid yield, lower energy and water requirements, less risk of bacterial contamination, less wastewater generation and less environmental concern regarding the disposal of solid waste (Prado et al, 2005). The economics of citric acid production could be made more attractive by using cheap agricultural wastes such as sugarcane bagasse (Kumar & Jain, 2008;Amenaghawon et al, 2013), pineapple waste (Kareem et al, 2009), banana peels (Kareem & Rahman, 2013), molasses and corn corbs (Shetty, 2015), cassava peels, ripe plantain peels and unripe plantain peels (Ogunka-Nnoka et al, 2011).…”

Section: Introductionmentioning

confidence: 99%

Optimisation of Media Components using Central Composite Design for Increased Citric Acid production from Yam Peels using Aspergillus niger

et al. 2017

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In this study, design of experiment (DOE) for response surface methodology (RSM) was used to analyse and optimise the compositions of the nutrient medium (calcium ion, peptone, ethanol and manganese ion) for citric acid production from yam peels via solid state fermentation (SSF) using Aspergillus niger. A four variable, central composite design (CCD) was used to develop a statistical model for the process while RSM was used to optimise it. The results obtained showed that the model was statistically significant (p<0.0001) and displayed a good fit with the experimental observations (R2 = 0.997). Citric acid production was significant at high levels of ethanol and calcium while the reverse was the case for manganese and peptone. The optimum values of ethanol, manganese, calcium and peptone were 7.0% v/v, 1.0 g/l, 0.1 g/l and 0.1 g/l respectively. Under these conditions, the citric acid concentration was obtained as 66 g/l. Validation of the statistical model showed an insignificant difference between experimental and model predicted results.

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Evaluation of Citric Acid Production Potentials of Food Processing Wastes

Cited by 3 publications

References 0 publications

Optimization of citric acid production using a mutant strain of Aspergillus niger on cassava peel substrate

Optimization of citric acid production using a mutant strain of Aspergillus niger on cassava peel substrate

Potentials of Chemical and Biological Hydrolysis of Agricultural Wastes in the Production of Ethanol, Single Cell Protein (SCP) and Vinegar

Optimisation of Media Components using Central Composite Design for Increased Citric Acid production from Yam Peels using Aspergillus niger

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