:: دوره 19، شماره 2 - ( 1398 ) ::
جلد 19 شماره 2 صفحات 942-960 برگشت به فهرست نسخه ها
Bioethanol a by-product of agar and carrageenan production industry from the tropical red seaweeds, Gracilaria manilaensis and Kappaphycus alvarezii
چکیده:   (1478 مشاهده)
The two red seaweeds, Gracilaria manilaensis and Kappaphycus alvarezii are cultivated in Malaysia for producing agar and carrageenan, respectively. The residues of these seaweeds after removing agar and carrageenan by dilute acid treatment were subjected to enzymatic hydrolysis using cellulase (Cellic CTec 2). In the optimization of enzymatic hydrolysis, highest glucose concentration was achieved in the sample with liquid: residue ratio of 7.5:1 and enzyme loading of 10 % w w-1 residue. The resulting glucose was converted to bioethanol using Saccharomyces cerevisiae where bioethanol yields from G. manilaensis and K. alvarezii were 56.26±1.10 g L-1 and 51.10±1.21 g L-1, respectively, which corresponded to 91 % and 95 % of the theoretical yield. The results of this study indicate that the residues of these seaweeds can be efficiently converted to bioethanol and besides environmental benefits, additional profit can be achieved in the phycocolloid industry.
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نوع مطالعه: پژوهشي | موضوع مقاله: Biotechnology
دریافت: 1395/8/12 | پذیرش: 1395/12/21 | انتشار: 1399/1/1


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دوره 19، شماره 2 - ( 1398 ) برگشت به فهرست نسخه ها