Journal
CHEMICAL ENGINEERING RESEARCH & DESIGN
Volume 89, Issue 2A, Pages 239-247Publisher
ELSEVIER
DOI: 10.1016/j.cherd.2010.04.023
Keywords
Diosorea zingiberensis CH Wright (DZW); Diosgenin; Ultrasound; Fermentation; Alcohol; Wastewater
Categories
Funding
- China National 11.5 Foundation [2006BAB04A14]
- National Natural Science Foundation of China [20972105]
- Sichuan Province Foundation [2008SZ0024]
Ask authors/readers for more resources
The present study evaluated the efficiency of ultrasonic and fermented pretreatment technology for diosgenin production from Diosorea zingiberensis C.H. Wright (DZW). The optimum extraction conditions were as follows: ultrasonic pretreatment condition, 20 min, 50 kHz, 100W; fermented pretreatment condition, 30 degrees C, 3d and 0.8g yeast dosages per 100 g raw materials; acidic hydrolysis condition, 1.5 mol/L sulfuric acid, 4 h; petrol extraction condition, 5 h. Under these conditions, diosgenin yield could reach 2.30%. Scanning electron micrographs indicated morphology changes of materials during diosgenin extraction process. UV-vis and GC-MS analysis revealed wastewater from the new approach contained 20 kinds of organic compounds which were mainly acids, esters, ketones and hydrocarbons. The research indicated the new approach could not only increase 42.5% diosgenin yield, recover 81.6% starch and 50.8% cellulose, but also efficiently reduce 69.7% COD, comparing with the conventional approach. (C) 2010 The Institution of Chemical Engineers. Published by Elsevier B.V. All rights reserved.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available