Tannin extraction from bark of rhizophora mucronata using soxhlet and boiling techniques

Ahmad Hafizan, Muhammad Muhayyidin and Nurul Aimi, Ghazali and Noor Fitrah, Abu Bakar and Wan Asma, Ibrahim and Arina, Sauki and Zulkafli, Hassan (2018) Tannin extraction from bark of rhizophora mucronata using soxhlet and boiling techniques. International Journal on Advanced Science, Engineering and Information Technology, 8 (6). pp. 2525-2530. ISSN 2088-5334. (Published)

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Extraction of tannin Rhizophora Mucronata barks by using two methods, which were soxhlet extraction and boiling were demonstrated in this study in order to evaluate the effective technique for extraction. Several parameters such as the type of solvent used, time of extraction, and sample size were specified. The extractant was then evaporated using vacuum rotary evaporator. The percentage of extractives and the characterization of condensed (Stiasny Index) and hydrolyzable tannins were all quantified. The milled barks with different sizes were introduced to the extraction using water, methanol, acetone, and toluene as a solvent for three, six and nine hours for Soxhlet extraction while for boiling only water were used as a solvent and at four, six and eight hours. Results demonstrated that extraction from the bark of Rhizophora Mucronata with water for six and nine hours extracted approximately 29 wt% and 13wt % for both soxhlet extraction and boiling respectively when coupled with vacuum rotary evaporator. The Soxhlet extraction method was superior as compared to boiling. The optimum parameters for the Soxhlet extraction were water as the solvent at six hours extraction with 0.5 mm of milled bark particles size that extracted 29 wt% of extractives. The condensed tannin and hydrolyzable tannin of the extractives using soxhlet extraction were approximately 76 wt% and 0.00133 wt% respectively.

Item Type: Article
Additional Information: Indexed by Scopus
Uncontrolled Keywords: Tannin; Soxhlet extraction; Rhizophora Mucronata; Tannin characterization
Subjects: Q Science > QD Chemistry
T Technology > TP Chemical technology
Faculty/Division: Faculty of Chemical & Natural Resources Engineering
Depositing User: Mrs Norsaini Abdul Samat
Date Deposited: 07 Nov 2022 09:52
Last Modified: 07 Nov 2022 09:52
URI: http://umpir.ump.edu.my/id/eprint/29466
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