IJSTR

International Journal of Scientific & Technology Research

IJSTR@Facebook IJSTR@Twitter IJSTR@Linkedin
Home About Us Scope Editorial Board Blog/Latest News Contact Us
CALL FOR PAPERS
AUTHORS
DOWNLOADS
CONTACT
QR CODE
IJSTR-QR Code

IJSTR >> Volume 1 - Issue 8, September 2012 Edition



International Journal of Scientific & Technology Research  
International Journal of Scientific & Technology Research

Website: http://www.ijstr.org

ISSN 2277-8616



Conversion of Sorrel (Hibiscus Sabdariffa) Calyces To Glucose

[Full Text]

 

AUTHOR(S)

O. A. Ajayi, Olawale, A.S., S. S. Adefila

 

KEYWORDS

Keyword: zoborodo, acid hydrolysis, Sorrel calyx, cellulose, bioethanol, glucose

 

ABSTRACT

Abstract:- The utilization of agrowaste for the production of bioethanol has attracted worldwide attention as a strategy for reducing global warming and improving global energy security. Sorrel drink, popularly known as "zoborodo" in Nigeria is a non-alcoholic drink, which is obtained from the calyces of Hibiscus sabdariffa, by solid-liquid extraction process, leaving the calyces pulp as the raffinate. The calyces obtained after extraction being rich in carbohydrate, is used in this work as raw material for glucose production. The rate of glucose production and its concentration using hydrochloric acid was found to increase with increase in temperature, acid concentration and reaction contact time and reduction in calyces' particle sizes. The conversion after 120 minutes was found to be 25% at 600C with 6% w/v acid strength. The results suggest that acid strength greater than 6%w/v would be more effective from 600C and above. The finding also shows a shift in the influence of mass transfer control to reaction control mechanism, with increase in temperature. It is established that under favorable condition sorrel calyces could serve as alternative source of energy and raw material for food and pharmaceutical industries.

 

REFERENCES

1. Aguilar R., Ramirez JA., Garrote G., Vazquez M., Kinetic study of the acid hydrolysis of sugar cane bagasse, Journal of Food Engineering, 2002, 55, 309-318

2. Akanya H.O., Oyeleke S.B., Jigam A.A., Lawal F.F., Analysis of some drink, Nigerian Journal of Biochemistry and Molecular Biology, 1997,(12), 77-81.

3. Alves L. A., Vitolo M., Felipe M. G. A., Silva, J. B. A., Xylose reductase and xylitol dehydrogenase activities of Candida guilliermondii as a function of different treatments of sugarcane bagasse hydrolysate employing experimental design, Applied Biochemistry and Biotechnology, 2002,98–100, 403–413.

4. Association of Official in Analytical Chemists, Official Methods of Analysis, 15th ed., vol. 1, AOAC, Arlington, VA, 1990.
5. Babalola S.O., Fasoyiro S.B., Owosibe T., Chemical composition and sensory quality of fruit-flavoured roselle (Hibiscus sabdariffa) drinks, World Journal of Agricultural Sciences,2005, (2),161-164.

6. Bustos G., Ramirez JA., Garrote G., Vazquez M., Modeling of the acid hydrolysis of sugar cane bagasse with hydrochloric acid, Appl. Biochem. Biotechnology, 2003, 104, 51-68

7. Choi CH., Mathews AP., Two-step acid hydrolysis process kinetics in the saccharification of low-grade biomass: 1, Experimental studies on the formation and degradation of sugars, Bioresour Technol., 1996,58,101–106.

8. Chosdu R., Hilmy N.E., Erlinda T.B., Abbas B., Radiation and chemical pretreatment of cellulosic waste, Radiat. Phys. Chem., 1993, (42), 695-698

9. Daltziel J.M., Burkill, H.M., The Useful Plants of West Africa. 2nd ed. White Friars Press, London, 1985.
10. Duke J.A., Handbooks of Energy Crops. Unpublished work,1983.

11. Gan Q., Allem SJ., Taylor G., Kinetic dynamics in heterogeneous enzymatic hydrolysis of cellulose: an overview, an experimental study and mathematical modeling, Process Biochem, 2003,38,1003-17

12. Grahmann K., Torget R., Himmel M., Optimization of dilute acid pretreatment of biomass, Biotechnology and Bioengineering Symposium No. 15,1985, 59–80.

13. Gregg D.J., Sadder J.N., Factors affecting cellulose hydrolysis and the potential of enzyme recycle to enhance the efficiency of an integrated wood to ethanol process, Biotechnol. Bioengr, 1996 (51),375

14. Grous W.R., Converse A.O., Grethlein H.E., Effect of steam explosion pretreatment on pore-size and enzymatic hydrolysis of poplar, Enzyme Microb. Technol., 1986, (8),274-280

15. Herrera A., Tellez-Luis S.J., Gonzalez-Cabriales J.J., Ramırez J.A., Vazquez M., Effect of the hydrochloric acid concentration on the hydrolysis of sorghum straw at atmospheric pressure, Journal of Food Engineering, 2004,63, 103–109

16. Highina B.J. O.A.Ajayi, B.O. Aderemi. Production of glucose from rice straw. Journal of the Nigerian Society of Chemical Engineers, vol. 21, No 1 & 2, 114-119,2006.

17. Imai M., Ikari K., Suzuki I., High-performance hydrolysis of cellulose using mixed cellulose species and ultrasonification pretreatment, Biochem Eng., 2004, (17), 79-83

18. Iranmahboob J., Nadim F., Monemi S., Optimizing acid-hydrolysis: a critical step for production of ethanol from mixed wood chips. Biomass Bioenergy, 2002, (22), 401–404.

19. Karimi K., Kheradmandinia S., Taherzadeh M.J., Conversion of rice straw to sugars by dilute-acid hydrolysis, Biomass and Bioenergy, 2006, (30), 247–253

20. Liao W., Liu Y., Liu C., Wen Z., Chen S., Acid hydrolysis of Fibers from dairy manure. Bioresource Technology, 2006, 97, 1687–1695

21. Olawale A.S., Ajayi O.A., A Conceptual Process Scheme for sorrel drink production, Journal of Raw Materials Research, vol. 5, No 1 & 2, 2008

22. Rodríguez-Chong A., Ramírez JA., Garrote G., Vázquez M., Hydrolysis of sugar cane bagasse using nitric acid: a kinetic assessment. Journal of Food Engineering,2004, 61,143–152.

23. Samy M.S., Chemical nutritional studies on roselle seed, Media Inc. Publisher, 1987.

24. Sun Y., Cheng JY., Hydrolysis of lignocellulosic materials for ethanol production, Bioresources Technology, 2002, (83), 1-11

25. Sun Y., Zhuang J., Lin L., Ouyang P., Clean conversion of cellulose into fermentable glucose. Biotechnology Advances, 2009, (27), 625–632

26. Wen Z., Liao W., Chen S.,Hydrolysis of animal manure lignocellulosic for reducing sugar production, Biores. Technol., 2004, (91),31-39.

27. www.hort.purdue.edu/newcrop/duke_energy/Hibiscus sabdariffa.html accessed on 20th March, 2007

28. Wyman C.E., Biomass ethanol: technical progress, opportunities, and commercial challenges, Ann. Rev. Energ. Environ., 1999, (24), 189-226