Comparative study on occurrence characteristics of matrix water in static and gas double-dynamic solid-state fermentations using low-field NMR and MRI

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	Comparative study on occurrence characteristics of matrix water in static and gas double-dynamic solid-state fermentations using low-field NMR and MRI
	He, Qin; Chen, Hong-zhang
刊名	ANALYTICAL AND BIOANALYTICAL CHEMISTRY
	2015-12-01
卷号	407 期号:30 页码:9115-9123
关键词	Solid-state fermentation Low-field nuclear magnetic resonance (NMR) Magnetic resonance imaging (MRI) Matrix water Cellulase
ISSN号	1618-2642
英文摘要	The water in a solid substrate is generally divided into three forms: hygroscopic, capillary, and free. However, there are few methods available for detecting the contents of different states of water in substrates. In this paper, low-field NMR and MRI were used to analyze the water occurrence characteristics of steam-exploded corn straw in solid-state fermentation (SSF). A significant linear relationship was found between the total NMR peak areas and the total water contents with a correlation coefficient of 0.993. It was further proved to be successful in comparing the contents and distributions of different states of water in static SSF and gas double-dynamic SSF (GDD-SSF). The results showed that among the three states of water, capillary water was the main form of water present and lost in substrates during fermentation. Total water and capillary water contents did not significantly differ as a result of different sample treatments, but hygroscopic water and free water contents in static SSF were respectively 0.38 and 2.98 times that in GDD-SSF with a packing height of 3 cm after fermentation. A relatively uniform water distribution and deep-depth region for microbial growth were found in GDD-SSF, suggesting that GDD-SSF was more suitable for industrialization. This technology has great potential for achieving efficient on-line water supply through water loss detection in SSF.
WOS标题词	Science & Technology ; Life Sciences & Biomedicine ; Physical Sciences
类目[WOS]	Biochemical Research Methods ; Chemistry, Analytical
研究领域[WOS]	Biochemistry & Molecular Biology ; Chemistry
关键词[WOS]	CELLULASE PRODUCTION ; SPECTROSCOPY ; AIR ; MOISTURE ; REACTOR ; TISSUE ; STRAW
收录类别	SCI
语种	英语
WOS记录号	WOS:000365865200016
公开日期	2016-05-03
内容类型	期刊论文
源URL	[http://ir.ipe.ac.cn/handle/122111/19899]
专题	过程工程研究所_生化工程国家重点实验室
作者单位	Chinese Acad Sci, Inst Proc Engn, Natl Key Lab Biochem Engn, Beijing 100190, Peoples R China
推荐引用方式 GB/T 7714	He, Qin,Chen, Hong-zhang. Comparative study on occurrence characteristics of matrix water in static and gas double-dynamic solid-state fermentations using low-field NMR and MRI[J]. ANALYTICAL AND BIOANALYTICAL CHEMISTRY,2015,407(30):9115-9123.
APA	He, Qin,&Chen, Hong-zhang.(2015).Comparative study on occurrence characteristics of matrix water in static and gas double-dynamic solid-state fermentations using low-field NMR and MRI.ANALYTICAL AND BIOANALYTICAL CHEMISTRY,407(30),9115-9123.
MLA	He, Qin,et al."Comparative study on occurrence characteristics of matrix water in static and gas double-dynamic solid-state fermentations using low-field NMR and MRI".ANALYTICAL AND BIOANALYTICAL CHEMISTRY 407.30(2015):9115-9123.