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题名: Optimization and scale-up of a new photobleaching agar extraction process from Gracilaria lemaneiformis
作者: Li, Haiyan1, 2;  Huang, Jianyu1;  Xin, Yanjuan1;  Zhang, Biaoming1;  Jin, Yan1;  Zhang, Wei1, 3
关键词: Agar ;  Eco-friendly process ;  Optimization ;  Scale-up ;  Gracilaria lemaneiformis
刊名: JOURNAL OF APPLIED PHYCOLOGY
发表日期: 2009-04-01
DOI: 10.1007/s10811-008-9358-9
卷: 21, 期:2, 页:247-254
收录类别: SCI
文章类型: Article
WOS标题词: Science & Technology ;  Life Sciences & Biomedicine
类目[WOS]: Biotechnology & Applied Microbiology ;  Marine & Freshwater Biology
研究领域[WOS]: Biotechnology & Applied Microbiology ;  Marine & Freshwater Biology
英文摘要: An eco-friendly photobleaching extraction process for agar extraction from the red alga Gracilaria lemaneiformis was developed for the benefit of workers' health and environmental safety. Here we report the optimization of key process parameters (alkali modification concentration, photobleaching duration, algal length and screen filter opening size) in order to scale up this new technique. The optimal conditions were found to be modification by 3-5% NaOH, photobleaching for 5 h, using algal fragments 2 -4 cm in length, and a filter screen with a 6 mu m opening. A 20-L agar extraction reactor was thus constructed, and the scale-up of the agar extraction process was tested in six batch experiments. The resulting agar quality was similar to that of the laboratory-scale extraction. In addition, batch-to-batch reproducibility was excellent. The results demonstrate the excellent scale-up ability and potential application of this new photobleaching agar extraction process on a commercial scale. The agar yield and gel strength for 5% NaOH modified agar were 26.8% and 1,897 g cm(-2), while those for 3% NaOH modified agar were 28.2% and 1,287 g cm(-2), respectively. It is clear that the agar yield and quality can be manipulated via alkali modification in this new eco-friendly extraction to meet market demands.
关键词[WOS]: RHODOPHYTA ;  QUALITY
语种: 英语
WOS记录号: WOS:000264483600011
Citation statistics: 
内容类型: 期刊论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/141511
Appears in Collections:中国科学院大连化学物理研究所_期刊论文

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作者单位: 1.Chinese Acad Sci, Dalian Inst Chem Phys, Marine Bioprod Engn Grp, Dalian 116023, Peoples R China
2.Chinese Acad Sci, Grad Sch, Beijing 100039, Peoples R China
3.Flinders Univ S Australia, Sch Med, Dept Med Biotechnol, Adelaide, SA 5042, Australia

Recommended Citation:
Li, Haiyan,Huang, Jianyu,Xin, Yanjuan,et al. Optimization and scale-up of a new photobleaching agar extraction process from Gracilaria lemaneiformis[J]. JOURNAL OF APPLIED PHYCOLOGY,2009,21(2):247-254.
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