Document Detail


Influence of moisture content on microbial activity and silage quality during ensilage of food processing residues.
MedLine Citation:
PMID:  21573983     Owner:  NLM     Status:  Publisher    
Abstract/OtherAbstract:
Seasonally produced biomass such as sugar beet pulp (SBP) and tomato pomace (TP) needs to be stored properly to meet the demand of sustainable biofuel production industries. Ensilage was used to preserve the feedstock. The effect of moisture content (MC) on the performance of ensilage and the relationship between microorganism activities and MC were investigated. For SBP, MC levels investigated were 80, 55, 30, and 10% on a wet basis. For TP, MC levels investigated were 60, 45, 30, and 10%. Organic acids, ethanol, ammonia, pH and water soluble carbohydrates (WSC) were measured to evaluate the silage quality. Ensilage improved as the MC decreased from 80 to 55% for SBP and from 60 to 45% for TP. When the MC decreased to 30%, a little microbial activity was detected for both feedstocks. Storage at 10% MC prevented all the microbial activity. The naturally occurring microorganisms in TP were found to preserve TP during silage and were isolated and determined by polymerase chain reaction (PCR). The results suggest that partial drying followed by ensilage may be a good approach for stabilization of food processing residues for biofuels production.
Authors:
Yi Zheng; Matthew Yates; Hnin Aung; Yu-Shen Cheng; Chaowei Yu; Hongyun Guo; Ruihong Zhang; Jean Vandergheynst; Bryan M Jenkins
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Publication Detail:
Type:  JOURNAL ARTICLE     Date:  2011-5-15
Journal Detail:
Title:  Bioprocess and biosystems engineering     Volume:  -     ISSN:  1615-7605     ISO Abbreviation:  -     Publication Date:  2011 May 
Date Detail:
Created Date:  2011-5-16     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  101088505     Medline TA:  Bioprocess Biosyst Eng     Country:  -    
Other Details:
Languages:  ENG     Pagination:  -     Citation Subset:  -    
Affiliation:
Biological and Agricultural Engineering Department, University of California, Davis, Bainer Hall, One Shields Avenue, Davis, CA, 95616, USA, yizheng@ucdavis.edu.
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