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Separation and concentration of hydroxycinnamic acids in alkaline hydrolyzate from rice straw by nanofiltration
Li, Yun1,2; Qi, Benkun1; Luo, Jianquan1; Khan, Rashid1,2; Wan, Yinhua1
2015-07-27
Source PublicationSEPARATION AND PURIFICATION TECHNOLOGY
ISSN1383-5866
Volume149Issue:JULPages:315-321
Abstract

Alkali pretreatment could cause the degradation of the lignin of lignocellulose, releasing hydroxycinnamic acids and phenolic aldehydes into the hydrolyzate. Hydroxycinnamic acids (ferulic and p-coumaric acids) found in alkaline lignocellulosic hydrolyzate are high value-added products. Their separation and concentration from phenolic aldehydes were investigated using nanofiltration (NF) membrane with model solution and practical hydrolyzate. The effect of main operating parameters such as feed pH, permeate flux, NaCl concentration and the synergistic effect of pH and salt on the retentions of phenolic acids and aldehydes in the model solution were studied. Results indicated that the separation performance of hydroxycinnamic acids from aldehydes was optimal at neutral pH. All the phenolics retentions decreased with increasing NaCl concentration, especially for aldehydes. Salt and pH acted synergistic effect on phenolic aldehydes retention. When the practical alkaline hydrolyzate was treated under concentration-diafiltration mode, the mass percentage of hydroxycinnamic acids reached as high as 91.4%. This work demonstrated that NF could accomplish the separation and concentration of hydroxycinnamic acids from practical alkaline lignocellulosic hydrolyzate. (C) 2015 Elsevier B.V. All rights reserved.

KeywordHydroxycinnamic Acids Ferulic Acid Separation Alkaline Rice Straw Hydrolyzate Nanofiltration
SubtypeArticle
WOS HeadingsScience & Technology ; Technology
DOI10.1016/j.seppur.2015.06.006
Indexed BySCI
Language英语
WOS KeywordFERULIC ACID ; NF MEMBRANES ; ACETIC-ACID ; CORN BRAN ; PURIFICATION ; RETENTION ; SALT ; CHARGE ; PH ; EXTRACTION
WOS Research AreaEngineering
WOS SubjectEngineering, Chemical
WOS IDWOS:000358702700037
Citation statistics
Cited Times:13[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.ipe.ac.cn/handle/122111/19431
Collection生化工程国家重点实验室
Affiliation1.Chinese Acad Sci, Inst Proc Engn, State Key Lab Biochem Engn, Beijing 100190, Peoples R China
2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
Recommended Citation
GB/T 7714
Li, Yun,Qi, Benkun,Luo, Jianquan,et al. Separation and concentration of hydroxycinnamic acids in alkaline hydrolyzate from rice straw by nanofiltration[J]. SEPARATION AND PURIFICATION TECHNOLOGY,2015,149(JUL):315-321.
APA Li, Yun,Qi, Benkun,Luo, Jianquan,Khan, Rashid,&Wan, Yinhua.(2015).Separation and concentration of hydroxycinnamic acids in alkaline hydrolyzate from rice straw by nanofiltration.SEPARATION AND PURIFICATION TECHNOLOGY,149(JUL),315-321.
MLA Li, Yun,et al."Separation and concentration of hydroxycinnamic acids in alkaline hydrolyzate from rice straw by nanofiltration".SEPARATION AND PURIFICATION TECHNOLOGY 149.JUL(2015):315-321.
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