Investigation of the effect of temperature and alkaline concentration on the solubilization of phenolic acids from dilute acid pretreated wheat straw    
Yazarlar (2)
Prof. Dr. Özlem AKPINAR Tokat Gaziosmanpaşa Üniversitesi, Türkiye
Gulsen Usal
Tokat Gaziosmanpaşa Üniversitesi, Türkiye
Makale Türü Özgün Makale
Makale Alt Türü SSCI, AHCI, SCI, SCI-Exp dergilerinde yayınlanan tam makale
Dergi Adı Food and Bioproducts Processing
Dergi ISSN 0960-3085 Wos Dergi Scopus Dergi
Dergi Tarandığı Indeksler SCI-Expanded
Dergi Grubu Q4
Makale Dili İngilizce
Basım Tarihi 07-2015
Cilt No 95
Sayı 1
Sayfalar 272 / 280
DOI Numarası 10.1016/j.fbp.2014.11.001
Makale Linki http://linkinghub.elsevier.com/retrieve/pii/S0960308514001394
Özet
This work deals with the investigation of the effect of alkaline concentration and temperature on the solubilization of phenolic materials from wheat straw, an abundant agricultural waste found in Turkey. The solid residue obtained after dilute acid pretreatment of wheat straw (SPWS) was treated by alkaline to solubilize the lignin to phenolic acids. Four different alkaline concentrations at 120 °C and seven different temperatures with 2 M NaOH were evaluated for the degree of solubilization of the phenolic materials, and the antioxidant activities of the soluble phenolic materials were determined. It was found that coumaric and ferulic acids were the major phenolic acids in all of the conditions tested. The highest antioxidant capacity of the hydrolysate of SPWS was obtained with 2 M NaOH at 150 °C where DPPH∗, FRAP and TEAC values were found to be 3.23, 10.27 and 13.70 μmol/g WS, respectively.
Anahtar Kelimeler
Antioxidant | Coumaric acid | Ferulic acid | Lignin | Phenolic acid | Wheat straw