Improvement of barley (Hordeum vulgare L.) germination by application of biochar leacheate in steeping solution to upgrade malt quality
- 150 Downloads
To investigate an improvement of barley germination by application of biochar leacheate in the steeping solution for upgrading malt quality.
Barley germination was improved when biochar leacheate was used in the steeping water during the first steeping cycle. A clear decrease in the time to reach 50% of final germination percentage was detected due to an addition of biochar leacheate, but no significant difference was observed in the percent germination at the end of germination. Hydrolase activities including α-amylase, proteinase and β-glucanase in barley grains were maximally increased during the malting process when 10% biochar leacheate was added to the first steeping water. The wort yielding indexes including both glucose and maltose content and the free amino nitrogen content were significantly increased but the β-glucan content was significantly decreased at a level of p < 0.05 when 10% biochar leacheate was added to the steeping water.
Biochar leacheate could be used as a stimulator in the steeping solution during the first steeping cycle to improve barley germination and so upgrade malt quality.
KeywordsBarley Biochar leacheate Germination Hydrolase Improvement Malt quality
This study was founded by the National Key R&D Program of China (2017YFD0200800), the National Natural Science Foundation of China (31771907), and the Basic Foundation for University of Liaoning (2017J031).
Compliance with ethical standards
Conflict of interest
All authors declare that they have no conflict of interest.
- American Society of Brewing Chemists (ASBC) (2008) ASBC analysis method (2008 Edition). ASBC, Saint PaulGoogle Scholar
- European Brewery Convention (EBC) (2004) Analytica-EBC. Verlag Hans Getränke-Fachverlag, NürnbergGoogle Scholar
- Lou Y, Joseph S, Li L, Graber E, Liu X, Pan G (2016) Water extract from straw biochar used for plant growth promotion: an initial test. Bioresources 11:249–266Google Scholar
- Wang P, Zhang T, Bian R, Li L, Pan G (2018) Effects on yield, quality and nutrients of water spinach by organic/inorganic water-soluble fertilizer based on bioactive extracts from biomass pyrolysis. Chin J Soil Sci 6:556–563Google Scholar