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Biotransformation of Coffee Wastes for Value Addition.

Nabeel, Ebrahim Saheb (2011) Biotransformation of Coffee Wastes for Value Addition. [Student Project Report]

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This Dissertation / Report is the outcome of investigation carried out by the creator(s) / author(s) at the department/division of Central Food Technological Research Institute (CFTRI), Mysore mentioned below in this page.

Item Type: Student Project Report
Additional Information: Coffee is one of the major plantation crops of India. Wet processing of coffee produces mucilage (pulp) as liquid waste and Coffee fruit peel as solid waste. Due to its high acidic nature and the presence of polyphenolics the pulp is classified as phytotoxic. The acidic nature is due to the phenolic acids present in the pulp. Coffee pulp effluent is an agricultural by-product and efforts have been made to decrease the anti-nutritional compounds so that it can be used as feed for cattle, poultry or as a source for biogas, etc. To treat the effluent biological methods that is by microorganisms to make the effluent environmentally safe being contemplated all over the world. In the present work consortium of organisms were used to treat the pulp effluent at lab scale and the same was tried at the field to study the feasibility of the same. Three strains of yeast and one fungal strain viz- Mycotypha was used to for the treatment of the wastewater. The role of these organisms and the impact on the coffee pulp was first checked under laboratory conditions. Parameters like total sugars, total polyphenols, pH and growth of the organism was checked. HPLC analysis was also performed for the samples to study the polyphenol degradation and sugar utilisation. After performing lab experiments, these organisms were grown in bulk amount so as to treat the effluent in field where the volume of effluent handled is very large when compared to the lab conditions. The lab results indicated that the organisms can degrade polyphenols and utilize sugars for its growth. The decrease in concentration of polyphenols and sugars were confirmed by HPLC analysis. The field samples also showed positive results as concentration of sugars and polyphenols decreased. There was an increase in pH and the Chemical Oxygen Demand value also decreased from 20,000-25,000mgL-1 to 2500-3000mgL-1in 60 days. The results indicate that the consortium developed can be applied to the field. The improvement was appreciable in terms of odour, colour of the effluent and finally COD values. The treated effluent can be used for irrigation. This is mainly important as coffee pulp effluent is discharged during the dry periods of the year hence the effect of the same on the environment is high.
Uncontrolled Keywords: Coffee,liquid waste; Coffee fruit peel; solid waste; fungal strain; biological methods
Subjects: 600 Technology > 07 Beverage Technology > 04 Coffee
600 Technology > 08 Food technology > 05 Processing and Engineering
Divisions: Food Microbiology
Depositing User: Food Sci. & Technol. Information Services
Date Deposited: 31 May 2011 04:17
Last Modified: 28 Dec 2011 10:23
URI: http://ir.cftri.res.in/id/eprint/10038

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