Comparison of the improvement efficacies for ensiling quality and biodegradation performance of sweet sorghum silage by different additives

doi:10.11975/j.issn.1002-6819.2021.14.033

	Comparison of the improvement efficacies for ensiling quality and biodegradation performance of sweet sorghum silage by different additives
	Ren, Haiwei 1,2,3; Zhao, Yi 3; Liu, Yulong 3; Feng, Yinping 3; Zhang, Bingyun 2; Li, Jinping 1,2; Li, Zhizhong 3
刊名	Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
	2021-07-15
卷号	37 期号:14 页码:283-293
关键词	Additives Agricultural wastes Ammonia Biodegradability Biodegradable polymers Biodegradation Biogas Biomass Cellulose Crops Lactic acid Lignin pH Saccharification Bio-augmentation Biogas slurry Cellulase and xylanase Ensiling fermentation Enzymatic saccharification Fluid treatments Rumen fluids Slurry treatment Structural characterization Sweet sorghum
ISSN号	10026819
DOI	10.11975/j.issn.1002-6819.2021.14.033
英文摘要	Sweet sorghum, a C4 energy crop, has gained much attention recently as a source of biofuel production, due mainly to its high biomass yields while requiring less water and fertilizer. However, the seasonal harvest of sweet sorghum needs to be preserved and stored for a year-round continuous supply. The anti-degradation barrier structure of native lignocellulose can also hinder the biodegradability of sweet sorghum. Particularly, the lignin remains an intact shielding to the degradable carbohydrate polymers against decomposition. Alternatively, the silage pretreatment and bioaugmentation can be combined to serve as an effective way for sweet sorghum, thereby maintaining a sustainable supply, while improving biodegradability. Furthermore, silage additives can also be selected to improve biodegradability and ensiling quality. For instance, the rumen fluid (waste from slaughterhouses) and biogas slurry (waste from biogas plant) display an anaerobic microbial ecosystem with cellulolytic activities. In this study, the rumen fluid and biogas slurry were added into the silages system of sweet sorghum for improved ensiling quality and biodegradation. A comparison was also made on the addition of rumen fluid and biogas slurry, cellulase, and xylanase additives, in terms of the fermentation, structural characteristics, and enzymatic saccharification of sweet sorghum silages. The sweet sorghum was bioaugmented-ensiled at four treatments, including the cellulase treatment (CT) with a dosage of 3 g/kg; xylanase treatment (XT) with a dosage of 3 g/kg; rumen fluid treatment (RT) with a dosage of 70 mL/kg; biogas slurry treatment (BT) with a dosage of 70 mL/kg, and one control group (CK, no-added additive), where all ensiled for 90 days at 18. Silage samples were analyzed to determine the content of Dry Matter (DM), the organic Components including Neutral Detergent Fiber (NDF), Acid Detergent Fiber (ADF), Acid Detergent Lignin (ADL), Water-Soluble Carbohydrates (WSC), and the fermentation properties, such as pH value, the content of lactic acid, acetic acid, and ammonia nitrogen (NH3-N). Furthermore, the structural characteristics of sweet sorghum before and after bioaugmented-ensiling were evaluated using an X-ray Diffractometer (XRD), Scanning Electron Microscope (SEM), and Fourier transform infrared spectrometer (FTIR). The results showed that the pH value of four treatments with additives significantly dropped to below 4.3 (P 3-N and acetic acid decreased, whereas, the content of lactic acid increased in the silages treated with the addition of cellulase and xylanase, as the pH value decreased. The addition of four additives all reduced the content of DM, WSC, NDF, ADL, and hemicellulose (HC), resulting in the increase of cellulose content and Theoretical Biodegradation Potential (TBP) of silages relative to raw material when ensiling for 90 days (P © 2021, Editorial Department of the Transactions of the Chinese Society of Agricultural Engineering. All right reserved.
语种	中文
出版者	Chinese Society of Agricultural Engineering
内容类型	期刊论文
源URL	[http://ir.lut.edu.cn/handle/2XXMBERH/150953]
专题	生命科学与工程学院
作者单位	1.Northwest Low-carbon Town Support Technology Collaborative Innovation Center, Lanzhou; 730050, China 2.Key Laboratory of Complementary Energy System of Biomass and Solar Energy, Gansu Province, Lanzhou; 730050, China; 3.School of Life Science and Engineering/Western China Energy & Environment Research Center, Lanzhou University of Technology, Lanzhou; 730050, China;
推荐引用方式 GB/T 7714	Ren, Haiwei,Zhao, Yi,Liu, Yulong,et al. Comparison of the improvement efficacies for ensiling quality and biodegradation performance of sweet sorghum silage by different additives[J]. Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering,2021,37(14):283-293.
APA	Ren, Haiwei.,Zhao, Yi.,Liu, Yulong.,Feng, Yinping.,Zhang, Bingyun.,...&Li, Zhizhong.(2021).Comparison of the improvement efficacies for ensiling quality and biodegradation performance of sweet sorghum silage by different additives.Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering,37(14),283-293.
MLA	Ren, Haiwei,et al."Comparison of the improvement efficacies for ensiling quality and biodegradation performance of sweet sorghum silage by different additives".Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering 37.14(2021):283-293.