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- Title
Improvement of barley (Hordeum vulgare L.) germination by application of biochar leacheate in steeping solution to upgrade malt quality.
- Authors
Zhang, Xiaoyu; Yu, Zhimin; Tang, Wenzhu; Meng, Jun; Dong, Xiaoli; Chen, Wenfu; Li, Xianzhen
- Abstract
Objective: To investigate an improvement of barley germination by application of biochar leacheate in the steeping solution for upgrading malt quality. Results: 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. Conclusions: 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.
- Subjects
BARLEY; GLUCANS; GERMINATION; BETA-glucans; MALTING; BIOCHAR; WATER use; GRAIN
- Publication
Biotechnology Letters, 2020, Vol 42, Issue 2, p305
- ISSN
0141-5492
- Publication type
Article
- DOI
10.1007/s10529-019-02781-4