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Biological activity of composts obtained from hop waste generated during the brewing
Biomass Conversion and Biorefinery ( IF 4 ) Pub Date : 2020-05-15 , DOI: 10.1007/s13399-020-00746-6
Michał Kopeć , Monika Mierzwa-Hersztek , Krzysztof Gondek , Katarzyna Wolny-Koładka , Marek Zdaniewicz , Renata Jarosz

New ways of managing hop sediments from brewing and fermentation of beer are constantly being sought and the existing ones improved as part of the circular economy. These wastes are not generated in large amounts, but the absence of their proper characteristics may lead to further processing errors. The study analyses the composting of hop waste under laboratory conditions and the effects of the biological activity of composts introduced into the soil. The study was carried out on two-hop sediments from two different technological stages of beer production: hot trub (HT) and spent hops (SH). Chemical, microbiological and biochemical analyses, as well as the assessment of phytotoxicity to Lepidium sativum L., were performed in the materials. The results proved that, due to their formation technology, the tested feedstocks are safe from an epidemiological point of view and are not a source of microbial contamination. Inhibitory properties for plant development were found for HT and it most likely results from the organic compound content. The mineral composition of hot trub does not exclude composting if its share in biomass is low. Spent hops (SH) were characterised by a significant total nitrogen content, which affected the composting process. Composting this sediment required the selection of substrates with a wide C:N ratio. The number of microorganisms inhabiting the analysed material was very diverse and varied depending on the type of sediments. The sample that contained the composted SH from dry hopping had a much larger number of microorganisms than the sample with HT from wet hopping.



中文翻译:

从酿造过程中产生的啤酒花废料获得的堆肥的生物活性

人们一直在寻找新的方法来管理啤酒酿造和发酵过程中产生的啤酒花沉积物,并且作为循环经济的一部分,对现有方法进行了改进。这些废物不会大量产生,但是缺乏其适当的特性可能会导致进一步的处理错误。该研究分析了在实验室条件下啤酒花废料的堆肥以及引入土壤中的堆肥的生物活性的影响。该研究是在啤酒生产的两个不同技术阶段的两跳沉积物上进行的:热灌浆(HT)和废啤酒花(SH)。化学,微生物和生化分析,以及对番茄的毒理学评估L.,在材料中进行。结果证明,由于其形成技术,从流行病学的角度来看,所测试的原料是安全的,并且不是微生物污染的来源。发现植物抑制HT的特性,这很可能是由于有机化合物的含量所致。如果热t的矿物成分在生物质中所占的比例很低,则不能排除其堆肥。废啤酒花(SH)的特征在于总氮含量高,这会影响堆肥过程。对这种沉积物进行堆肥需要选择具有宽C:N比的底物。居住在被分析物质中的微生物数量非常多样,并且取决于沉积物的类型。

更新日期:2020-05-15
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