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165 results on '"Tang, Jiahuan"'

3. Research progress of main microflora and their roles during strong-flavor Baijiu Daqu fermentation

Author

HE Xiaorong, ZHANG Qing, TANG Jiahuan, LIU Pei

Subjects
strong-flavor baijiu, daqu microbes, microbial source, change rule, functional microorganism, Biotechnology, TP248.13-248.65, Food processing and manufacture, TP368-456
Abstract

Daqu, as an important saccharification and fermentation starter in Baijiu brewing, is rich in a wide variety of stable microorganisms during the fermentation, which provides complex and diverse enzymes, flavor (precursor) substances and microflora for distiller's grains fermentation. In this paper, the main microbial sources in the fermentation process of strong-flavor (Nongxiangxing) Baijiu Daqu, the changes of microorganisms in different fermentation stages, the role of important functional microorganisms, and the methods of microbial community analysis were reviewed, in order to provide scientific basis for optimization of strong-flavor Daqu production process and improvement of Baijiu quality.

Published
2024
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17. Role of Bioavailability in Compost Maturity During Aerobic Composting of Chicken Manure.

Author

Tang, Jiahuan, Zhang, Shuqun, Zheng, Guannan, Han, Zhuoya, Wang, Dingmei, and Lin, Hao

Abstract

To evaluate the effects of the type and proportion of bulking agents on compost maturity, chicken manure feedstock (J) was selected as the main raw material for aerobic composting, and wood chips (M), straw (S), and cornmeal (Y) were used as bulking agents. The ratios of chicken manure feedstock to the three bulking agents were set at 1:3, 1:1, and 3:1, respectively. The compost mixture composed of wood chips (M) and feedstock (J) in a 1:1 ratio exhibited the highest temperature (75 °C). The treatment with a bulking-agent-to-feedstock ratio of 3:1 exhibited the lowest temperature (52 °C) and the longest high-temperature period (about 10 days). Moreover, the compost mixture composed of wood chips (M) and feedstock (J) in a 3:1 ratio exhibited the highest seed germination index (1.32), while the GI values for all cornmeal treatments did not meet the standard requirements (0.4). The predominant microorganisms in all three treatments included Firmicutes, Bacteroidetes, Actinobacteria, and Proteobacteria. The total carbon transformation-related microorganism abundance in MJ31, SJ31, and YJ31 was 1.65%, 10.69%, and 3%, respectively. Further analysis showed that the bioavailability of feedstock was strongly correlated with compost maturity. The treatment with a bulking-agent-to-feedstock ratio of 3:1, with the highest GI, also exhibited the highest bioavailability. These results can guide the selection of the appropriate bulking agent and the optimal bulking-agent-to-feedstock ratio, offering a new direction for the optimization of the composting process. [ABSTRACT FROM AUTHOR]

Published
2024
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39. Herbicide selection promotes antibiotic resistance in soil microbiomes

Author

Liao, Hanpeng, Li, Xi, Yang, Qiue, Bai, Yudan, Cui, Peng, Wen, Chang, Liu, Chen, Chen, Zhi, Tang, Jiahuan, Che, Jiangang, Yu, Zhen, Geisen, S.A., Zhou, Shungui, Friman, Ville Petri, Zhu, Yong Guan, Liao, Hanpeng, Li, Xi, Yang, Qiue, Bai, Yudan, Cui, Peng, Wen, Chang, Liu, Chen, Chen, Zhi, Tang, Jiahuan, Che, Jiangang, Yu, Zhen, Geisen, S.A., Zhou, Shungui, Friman, Ville Petri, and Zhu, Yong Guan

Abstract

Herbicides are one of the most widely used chemicals in agriculture. While they are known to be harmful to non-target organisms, the effects of herbicides on the composition and functioning of soil microbial communities remain unclear. Here we show that application of three widely used herbicides—glyphosate, glufosinate and dicamba—increase the prevalence of antibiotic resistance genes (ARGs) and mobile genetic elements (MGEs) in soil microbiomes without clear changes in the abundance, diversity and composition of bacterial communities. Mechanistically, these results could be explained by a positive selection for more tolerant genotypes that acquired several mutations in previously well-characterized herbicide and antibiotic resistance genes. Moreover, herbicide exposure increased cell membrane permeability and conjugation frequency of multidrug resistance plasmids, promoting ARG movement between bacteria. A similar pattern was found in agricultural soils across eleven provinces in China, where herbicide application, and the levels of glyphosate residues in soils, were associated with increased ARG and MGE abundances relative to herbicide-free control sites. Together, our results show that herbicide application can enrich ARGs and MGEs by changing the genetic composition of soil microbiomes, potentially contributing to the global antimicrobial resistance problem in agricultural environments.

Published
2021

40. Herbicide Selection Promotes Antibiotic Resistance in Soil Microbiomes

Author

Liao, Hanpeng, primary, Li, Xi, additional, Yang, Qiue, additional, Bai, Yudan, additional, Cui, Peng, additional, Wen, Chang, additional, Liu, Chen, additional, Chen, Zhi, additional, Tang, Jiahuan, additional, Che, Jiangang, additional, Yu, Zhen, additional, Geisen, Stefan, additional, Zhou, Shungui, additional, Friman, Ville-Petri, additional, and Zhu, Yong-Guan, additional

Published
2021
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41. Soil treated herbicide

Author

Liao, Hanpeng, Li, Xi, Yang, Qiue, Bai, Yudan, Cui, Peng, Wen, Chang, Liu, Chen, Chen, Zhi, Tang, Jiahuan, Che, Jiangang, Yu, Zhen, Geisen, S.A., Zhou, Shungui, Friman, Ville Petri, Zhu, Yong Guan, Liao, Hanpeng, Li, Xi, Yang, Qiue, Bai, Yudan, Cui, Peng, Wen, Chang, Liu, Chen, Chen, Zhi, Tang, Jiahuan, Che, Jiangang, Yu, Zhen, Geisen, S.A., Zhou, Shungui, Friman, Ville Petri, and Zhu, Yong Guan

Abstract

Soil bacterial community treated by herbicide

Published
2020

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