Normal view MARC view ISBD view

Batch extraction of 1,3,7-trymethylxanthine from KKM22 cocoa seeds / Norhamizah Johari

By:

Norhamizah Johari

Material type: Text

TextPublication details: Kuantan, Pahang : UMP, 2012Description: xiii, 38 p. : ill. ; 30 cm. + 1 CD-ROMISBN:

THE0004057(Local)

Subject(s):

Dissertation note: Project paper (Bachelor of Chemical Engineering) -- Universiti Malaysia Pahang - 2012 Abstract: 1,3,7- trymethylxanthine (caffeine) is a naturally occurring substance found in cocoa seeds. The purpose of this research is to extract caffeine from Klon Koko Malaysia (KKM)22, to investigate the effect of particle size, solvent/feed ratio and extraction time, and also to determine the kinetic model for extraction of 1,3,7-trymethylxantine. The sample was prepared by grinding and sieving, followed by solid-liquid extraction using water by heat reflux extracting technique, liquid-liquid extraction with ethyl acetate, drying of caffeine by rotary evaporator, and finally analysis of the caffeine yield. The analysis of the caffeine yield was done using UV/Vis Spectrophotometric method. The caffeine yield was highest at sample particle size of 315 μm (0.22 % w/w caffeine or 2.1724 mg/g cocoa), solvent/feed ratio of 1:1 (0.22 % w/w caffeine or 2,2102 mg/g cocoa), and extraction time of 90 minutes (0.23 % w/w caffeine or 2.288 mg/g cocoa). The best conditions for the highest yield of caffeine from KKM22 were 315 μm of sample particle size, 1:1 of solvent/feed ratio, and 90 minutes of extraction time.

Tags from this library: No tags from this library for this title. Log in to add tags.

Average rating: 0.0 (0 votes)

Holdings ( 2 )
Title notes ( 3 )

Holdings
Item type	Current library	Call number	Copy number	Status	Date due	Barcode
Final Year Report	UMPLIB GAMBANG	TP156.E8 N67 2012 rs Bc. (Browse shelf(Opens below))	1	Not for loan		0000068540
Final Year Report	UMPLIB GAMBANG	CD 6486 \| TP156.E8 N67 2012 rs Bc. (Browse shelf(Opens below))	1	Not for loan		0000068541

Project paper (Bachelor of Chemical Engineering) -- Universiti Malaysia Pahang - 2012

Bibliography : p. 27-29

1,3,7- trymethylxanthine (caffeine) is a naturally occurring substance found in cocoa seeds. The purpose of this research is to extract caffeine from Klon Koko Malaysia (KKM)22, to investigate the effect of particle size, solvent/feed ratio and extraction time, and also to determine the kinetic model for extraction of 1,3,7-trymethylxantine. The sample was prepared by grinding and sieving, followed by solid-liquid extraction using water by heat reflux extracting technique, liquid-liquid extraction with ethyl acetate, drying of caffeine by rotary evaporator, and finally analysis of the caffeine yield. The analysis of the caffeine yield was done using UV/Vis Spectrophotometric method. The caffeine yield was highest at sample particle size of 315 μm (0.22 % w/w caffeine or 2.1724 mg/g cocoa), solvent/feed ratio of 1:1 (0.22 % w/w caffeine or 2,2102 mg/g cocoa), and extraction time of 90 minutes (0.23 % w/w caffeine or 2.288 mg/g cocoa). The best conditions for the highest yield of caffeine from KKM22 were 315 μm of sample particle size, 1:1 of solvent/feed ratio, and 90 minutes of extraction time.