Microwave-assisted dilute acid pretreatment of different agricultural bioresources for fermentable sugar production


Germec M., DEMIREL F., TAS N., OZCAN A., YILMAZER C., ONUK Z., ...Daha Fazla

CELLULOSE, cilt.24, sa.10, ss.4337-4353, 2017 (SCI-Expanded) identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 24 Sayı: 10
  • Basım Tarihi: 2017
  • Doi Numarası: 10.1007/s10570-017-1408-5
  • Dergi Adı: CELLULOSE
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Sayfa Sayıları: ss.4337-4353
  • Anahtar Kelimeler: Microwave-assisted pretreatment, Response surface methodology, Fermentable sugar, Chemical composition, LIGNOCELLULOSIC BIOMASS, BARLEY HUSK, ETHANOL-PRODUCTION, RYE BRAN, IRRADIATION, WHEAT, DETOXIFICATION
  • Akdeniz Üniversitesi Adresli: Evet

Özet

Microwave-assisted pretreatment can be used for fermentable sugar production from lignocellulosic biomass. In this study, the optimum hydrolysis conditions of barley husk, oat husk, wheat bran, and rye bran were determined in power level, treatment time, solid-to-liquid ratio and dilute acid ratio as follows: 700 W, 6.92 min, 1:18.26 w/v, and 3.67% for barley husk, 600 W, 6.96 min, 1:17.22 w/v, and 3.47% for oat husk, 600 W, 6.92 min, 1:16.69 w/v, and 1.85% for wheat bran, and 460 W, 6.15 min, 1:17.14 w/v, and 2.72% for rye bran. The fermentable sugar concentrations were 37.21 (0.68 g/g), 38.84 (0.67 g/g), 49.65 (0.83 g/g), and 36.27 g/L (0.62 g/g) under optimum conditions, respectively. The results showed that microwave-assisted pretreatment is a promising technology which can be successfully implemented for the hydrolysis of lignocellulosic biomass for high sugar yield. On the other hand, hydrolysates included some inhibitors such as organic acids, furans, and phenolic compounds. Lignocellulosic biomass used in this study can be employed as good feedstocks for value-added product production in the fermentation process, after the inhibitors have been detoxified/removed with different detoxification methods.