Norhamizah, Johari (2012) Batch extraction of 1,3,7-trymethylxanthine from KKM22 cocoa seeds. Faculty of Chemical & Natural Resource Engineering, Universiti Malaysia Pahang.
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15.Batch extraction of 1,3,7-trymethylxanthine from KKM22 cocoa seeds.pdf - Accepted Version Download (1MB) | Preview |
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.
| Item Type: | Undergraduates Project Papers |
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| Additional Information: | Project paper (Bachelor of Chemical Engineering) -- Universiti Malaysia Pahang - 2012, SV: DR. IR. SAID NURDIN, NO. CD: 6486 |
| Uncontrolled Keywords: | Extraction Caffeine |
| Subjects: | T Technology > TP Chemical technology |
| Faculty/Division: | Faculty of Chemical & Natural Resources Engineering |
| Depositing User: | Shamsor Masra Othman |
| Date Deposited: | 12 Nov 2013 03:12 |
| Last Modified: | 11 May 2023 04:43 |
| URI: | http://umpir.ump.edu.my/id/eprint/4378 |
| Download Statistic: | View Download Statistics |
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